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NongFaHeZuoSheGuanLi/public/Cesium/Workers/MVTWorker.js

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2024-07-17 08:39:11 +08:00
/**
* Cesium - https://github.com/CesiumGS/cesium
*
* Copyright 2011-2020 Cesium Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Columbus View (Pat. Pend.)
*
* Portions licensed separately.
* See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
*/
define(['./when-8d13db60', './Check-70bec281', './Math-61ede240', './FeatureDetection-7bd32c34', './createTaskProcessorWorker', './Color-69f1845f', './pbf-9fe59c76'], function (when, Check, _Math, FeatureDetection, createTaskProcessorWorker, Color, pbf) { 'use strict';
// 用来根据Mapbox style标准构建过滤器和定义过滤方法
function MvtFilter() {
}
/**
* 根据根据Mapbox style的过滤器对象构造过滤条件
* @param filter 输入过滤器
* @returns 返回过滤条件数组
*/
MvtFilter.parseLayerFilter = function(filter) {
if (!when.defined(filter) || !(filter instanceof Array)) {
return null;
}
var filterArray = [];
var condition;
if (isOperator(filter[0])) {
condition = parseSingleFilterArray(filter);
if(when.defined(condition)){
filterArray.push(condition);
}
}
else{
for (var fi = 0; fi < filter.length; fi++) {
if (!(filter[fi] instanceof Array)) {
continue;
}
if (filter[fi].length !== 3) {
for (var fj = 0; fj < filter[fi].length; fj++) {
if (filter[fi][fj] instanceof Array && filter[fi][fj].length === 3) {
condition = parseSingleFilterArray(filter[fi][fj]);
if(when.defined(condition)){
filterArray.push(condition);
}
}
}
} else {
condition = parseSingleFilterArray(filter[fi]);
if(when.defined(condition)){
filterArray.push(condition);
}
}
}
}
return filterArray;
};
/**
* 根据对象的属性进行过滤条件测试
* @param filterArray 过滤条件数组
* @param properties 对象属性
* @returns 通过过滤条件返回true
*/
MvtFilter.filterTest = function(properties, filterArray) {
for(var filterIdx = 0, filterCount = filterArray.length; filterIdx < filterCount; filterIdx++){
var filter = filterArray[filterIdx];
if(!compareFunctions[filter.filterOperator](properties, filter.filterFieldName, filter.filterCompareValue)){
return false;
}
}
return true;
};
function parseSingleFilterArray(filterArray){
var filterCompareValue = null;
var filterFieldName = null;
var filterOperator = null;
if (isOperator(filterArray[0])) {
filterOperator = filterArray[0];
}
else{
return null;
}
if(filterArray.length > 1){
filterFieldName = filterArray[1];
// TODO: 系统字段暂不处理
if(filterFieldName[0] === "$" ){
return null;
}
}
if(filterArray.length > 2){
filterCompareValue = filterArray[2];
}
return {
filterOperator : filterOperator,
filterFieldName : filterFieldName,
filterCompareValue : filterCompareValue
};
}
function isOperator(key) {
return ["==", "===", ">=", "<=", ">", "<", "!=", "has"].indexOf(key) !== -1;
}
function equalFunction(properties, fieldName, testValue){
return properties[fieldName] == testValue;
}
function greaterFunction(properties, fieldName, testValue){
return properties[fieldName] > testValue;
}
function lessFunction(properties, fieldName, testValue){
return properties[fieldName] < testValue;
}
function greaterEqualFunction(properties, fieldName, testValue){
return properties[fieldName] >= testValue;
}
function lessEqualFunction(properties, fieldName, testValue){
return properties[fieldName] <= testValue;
}
function notEqualFunction(properties, fieldName, testValue){
return properties[fieldName] != testValue;
}
function hasFunction(properties, fieldName){
return when.defined(properties[fieldName]);
}
var compareFunctions = {
"==" : equalFunction,
"===" : equalFunction,
">" : greaterFunction,
"<" : lessFunction,
">=" : greaterEqualFunction,
"<=" : lessEqualFunction,
"!=" : notEqualFunction,
"has" : hasFunction
};
function MvtStyle(openlayer, useOffscreen) {
if(!openlayer){
throw new Check.DeveloperError('need include ol-debug.js');
}
this._useOffscreen = useOffscreen;
this._openlayer = openlayer;
}
Object.defineProperties(MvtStyle.prototype, {
proxy: {
get: function() {}
}
});
MvtStyle.prototype.getStyle = function() {
var openlayer = this._openlayer;
var fill = new openlayer.style.Fill({
color: ""
});
fill.setColor("#ffffff");
var stroke = new openlayer.style.Stroke({
color: "",
width: 1
});
stroke.setWidth(1);
stroke.setColor("#000000");
var fillAndOutlineStyle = new openlayer.style.Style({
fill: fill,
stroke: stroke
});
return fillAndOutlineStyle;
};
function parseMapboxColorString(colorString){
var tempS = colorString.substring(colorString.indexOf("(") + 1, colorString.indexOf(")"));
tempS = tempS.split(",");
var resultColor = [];
resultColor.push(parseFloat(tempS[0]));
resultColor.push(parseFloat(tempS[1]));
resultColor.push(parseFloat(tempS[2]));
resultColor.push(parseFloat(tempS[3]));
return resultColor;
}
function colorWithOpacity(color, opacity) {
if (color && opacity !== undefined) {
var colorData = {
color: [
color[0] * 255 / color[3],
color[1] * 255 / color[3],
color[2] * 255 / color[3],
color[3]
],
opacity: color[3]
};
color = colorData.color;
color[3] = colorData.opacity * opacity;
if (color[3] === 0) {
color = undefined;
}
}
return color;
}
MvtStyle.prototype.getStyleByMapboxStyle = function(mapboxStyle) {
var openlayer = this._openlayer;
var type = mapboxStyle.type;
var paint = mapboxStyle.paint;
var layout = mapboxStyle.layout;
if(!when.defined(type) || !when.defined(paint)){
return this.getStyle();
}
if(type == "fill"){
var fillStyle = new openlayer.style.Style({
});
var fill = new openlayer.style.Fill({
color: "[255,255,255,1]"
});
fillStyle.setFill(fill);
var fillOpcatiy = paint["fill-opacity"];
if (when.defined(paint["fill-color"])) {
var fillColor = parseMapboxColorString(paint["fill-color"]);
if(when.defined(fillOpcatiy)){
fillColor[3] *= fillOpcatiy;
}
fill.setColor(fillColor);
}
if (when.defined(paint["fill-outline-color"])) {
var fillOutlineStroke = new openlayer.style.Stroke({
color: "",
width: 1
});
fillOutlineStroke.setColor(paint["fill-outline-color"]);
fillStyle.setStroke(fillOutlineStroke);
}
if (when.defined(paint["fill-pattern"])) {
fillStyle.fillPatternName = paint["fill-pattern"];
}
return fillStyle;
}
else if(type == "line"){
var lineStyle = new openlayer.style.Style({
});
var lineStroke = new openlayer.style.Stroke({
color: "#000000",
width: 1
});
lineStyle.setStroke(lineStroke);
var lineOpcatiy = paint["line-opacity"];
if (when.defined(paint["line-color"])) {
var lineColor = parseMapboxColorString(paint["line-color"]);
if(when.defined(lineOpcatiy)){
lineColor[3] *= lineOpcatiy;
}
}
if (when.defined(paint["line-width"])) {
var lineWidth = paint["line-width"];
lineStroke.setWidth(lineWidth);
}
if (when.defined(paint["line-dasharray"])) {
var lineDasharray = paint["line-dasharray"];
lineStroke.setLineDash(lineDasharray);
}
if(when.defined(layout)){
if (when.defined(layout["line-cap"])) {
var lineCap = layout["line-cap"];
lineStroke.setLineCap(lineCap);
}
if (when.defined(layout["line-join"])) {
var lineJoin = layout["line-join"];
lineStroke.setLineJoin(lineJoin);
}
if (when.defined(layout["line-miter-limit"])) {
var lineMiterLimit = layout["line-miter-limit"];
lineStroke.setMiterLimit(lineMiterLimit);
}
}
lineStroke.setColor(lineColor);
return lineStyle;
}
else if(type == "symbol"){
var iconStyle = new openlayer.style.Style({
});
if(when.defined(layout) && when.defined(layout["icon-image"])){
iconStyle.hasIconImage = true;
}
if(when.defined(layout) && when.defined(layout["text-field"])){
iconStyle.hasTextStyle = true;
}
return iconStyle;
}
else if(type == "circle"){
var circleRadius = paint["circle-radius"];
var circleColor = paint["circle-color"];
var circleStrokeColor = paint["circle-stroke-color"];
var circleOpacity = paint["circle-opacity"];
var circleStrokeOpacity = paint["circle-stroke-opacity"];
var circleStrokeWidth = paint["circle-stroke-width"];
var iconImg = new openlayer.style.Circle({
radius: circleRadius,
stroke: circleStrokeWidth === 0 ? undefined : new openlayer.style.Stroke({
width: circleStrokeWidth,
color: colorWithOpacity(circleStrokeColor, circleStrokeOpacity)
}),
fill: new openlayer.style.Fill({
color: colorWithOpacity(circleColor, circleOpacity)
})
});
var circleStyle = new openlayer.style.Style({
});
circleStyle.setImage(iconImg);
return circleStyle;
}
else{
return this.getStyle();
}
};
var scratchIDColor = new Color.Color();
function convertIDtoColor(id, layerID){
var colorB = Math.floor(id / 65536);
var d = id - colorB * 65536;
var colorG = Math.floor(d / 256);
var colorR = d - colorG * 256;
var alpha = 1;
scratchIDColor.red = colorR / 256;
scratchIDColor.green = colorG / 256;
scratchIDColor.blue = colorB / 256;
scratchIDColor.alpha = alpha;
return scratchIDColor;
}
MvtStyle.prototype.getIDColorStyle = function(geometryType, id, layerID, lineWidth, radius, lineWidthExpand) {
var openlayer = this._openlayer;
var idColor = convertIDtoColor(id);
var cssColor = idColor.toCssColorString();
if(geometryType == 'LineString' || geometryType == 'LinearRing' || geometryType == 'MultiLineString'){
var expandWidth = 4;
if (when.defined(lineWidth)) {
expandWidth = lineWidth * 2 + lineWidthExpand;
}
var scratchIDStroke = new openlayer.style.Stroke({
color: "",
width: expandWidth
});
scratchIDStroke.setColor(cssColor);
return new openlayer.style.Style({
stroke: scratchIDStroke
});
}
else if(geometryType == 'Point' || geometryType == 'MultiPoint'){
var iconImg = new openlayer.style.Circle({
radius: (radius - 0.5),
fill: new openlayer.style.Fill({
color: cssColor
})
});
var circleStyle = new openlayer.style.Style({
});
circleStyle.setImage(iconImg);
return circleStyle;
}
else{
var scratchIDFill = new openlayer.style.Fill({
color: ""
});
scratchIDFill.setColor(cssColor);
var resultStyle = new openlayer.style.Style({
fill: scratchIDFill
});
if(when.defined(lineWidth)){
var scratchIDStroke = new openlayer.style.Stroke({
color: "",
width: when.defined(lineWidth) ? lineWidth * 2 : 4
});
scratchIDStroke.setColor(cssColor);
resultStyle.setStroke(scratchIDStroke);
}
return resultStyle;
}
};
var templateRegEx = /^([^]*)\{(.*)\}([^]*)$/;
function fromTemplate(text, properties) {
var parts;
do {
parts = text.match(templateRegEx);
if (parts) {
const value = properties[parts[2]] || '';
text = parts[1] + value + parts[3];
}
} while (parts);
return text;
}
MvtStyle.prototype.getTextStyle = function(oldStyle, feature, mapboxStyleLayer) {
var openlayer = this._openlayer;
var paint = mapboxStyleLayer.paint;
var layout = mapboxStyleLayer.layout;
var textField = layout['text-field'];
var label = fromTemplate(textField, feature.getProperties());
if(!when.defined(label)){
return;
}
var style = new openlayer.style.Style();
var text = new openlayer.style.Text();
style.setText(text);
var textSize = layout['text-size'];
var font = when.defaultValue(layout['text-font'], ['Open Sans Regular', 'Arial Unicode MS Regular']);
var textTransform = layout['text-transform'];
if (textTransform == 'uppercase') {
label = label.toUpperCase();
} else if (textTransform == 'lowercase') {
label = label.toLowerCase();
}
var textMaxWidth = when.defaultValue(layout['text-max-width'], 10);
//var wrappedLabel = wrapText(label, font, textMaxWidth);
var wrappedLabel = label;
text.setText(wrappedLabel);
text.setFont(font);
text.setRotation(0);
var textAnchor = when.defaultValue(layout['text-anchor'], 'center');
var placement = when.defaultValue(layout['symbol-placement'], 'point');
text.setPlacement(placement);
if (placement == 'point') {
var textAlign = 'center';
if (textAnchor.indexOf('left') !== -1) {
textAlign = 'left';
} else if (textAnchor.indexOf('right') !== -1) {
textAlign = 'right';
}
text.setTextAlign(textAlign);
} else {
text.setTextAlign();
}
var textBaseline = 'middle';
if (textAnchor.indexOf('bottom') == 0) {
textBaseline = 'bottom';
} else if (textAnchor.indexOf('top') == 0) {
textBaseline = 'top';
}
text.setTextBaseline(textBaseline);
var textOffset = when.defaultValue(layout['text-offset'], [0.0, 0.0]);
var textTranslate = when.defaultValue(layout['text-translate'], [0.0, 0.0]);
text.setOffsetX(textOffset[0] * textSize + textTranslate[0]);
text.setOffsetY(textOffset[1] * textSize + textTranslate[1]);
var opacity = paint['text-opacity'];
var textColorFill = new openlayer.style.Fill();
var textColor = paint["text-color"];
if(when.defined(textColor)){
textColor = parseMapboxColorString(textColor);
textColorFill.setColor(textColor);
}
text.setFill(textColorFill);
var textHaloColor = paint["text-halo-color"];
if (when.defined(textHaloColor)) {
var textHalo = new openlayer.style.Stroke();
textHaloColor = parseMapboxColorString(textHaloColor);
textHalo.setColor(textHaloColor);
textHalo.setWidth(paint['text-halo-width']);
text.setStroke(textHalo);
} else {
text.setStroke(undefined);
}
style.setZIndex(oldStyle.getZIndex());
style.hasIconImage = oldStyle.hasIconImage;
style.textSize = textSize;
return style;
};
function covertIconAnchor(iconAnchor) {
var anchorOffset = [0.5, 0.5];
if (['top-left', 'top-right', 'bottom-left', 'bottom-right'].includes(iconAnchor)) {
anchorOffset = [0, 0];
}
if (iconAnchor === 'left') {
iconAnchor = 'top-left';
anchorOffset = [0, 0.5];
}
if (iconAnchor === 'right') {
iconAnchor = 'top-left';
anchorOffset = [1, 0.5];
}
if (iconAnchor === 'bottom') {
iconAnchor = 'top-left';
anchorOffset = [0.5, 1];
}
if (iconAnchor === 'top') {
iconAnchor = 'top-left';
anchorOffset = [0.5, 0];
}
return {
anchorOffset: anchorOffset,
iconAnchor: iconAnchor
};
}
var iconImageCache = {};
MvtStyle.prototype.setIconImageForStyle = function(spriteImageDatas, style, mapboxStyleLayer){
var openlayer = this._openlayer;
var paint = mapboxStyleLayer.paint;
var layout = mapboxStyleLayer.layout;
var iconSize = when.defaultValue(layout["icon-size"], 1);
var iconColor = paint['icon-color'];
var iconTranslate = when.defaultValue(paint['icon-translate'], [0.0, 0.0]);
var iconTranslateAnchor = when.defaultValue(paint['icon-translate-anchor'], 'map');
var iconAnchor = when.defaultValue(layout['icon-anchor'], 'center');
var anchorOffsetAndIconAnchor = covertIconAnchor(iconAnchor);
var anchorOffset = anchorOffsetAndIconAnchor.anchorOffset;
var iconOffset = when.defaultValue(layout['iconoffset'], [0.0, 0.0]);
var iconOpacity = when.defaultValue(layout['icon-opacity'], 1.0);
var spriteImageName = layout["icon-image"];
if(!when.defined(spriteImageDatas[spriteImageName])){
console.log('miss icon-image ' + spriteImageName);
return;
}
var icon_cache_key = spriteImageName + '.' + iconSize + '.' + iconTranslate + '.' + iconTranslateAnchor + '.' + iconAnchor + '.' + iconOffset;
if (when.defined(iconColor)) {
icon_cache_key += '.' + iconColor;
}
var iconImg = iconImageCache[icon_cache_key];
if(!when.defined(iconImg)){
var spriteImage = spriteImageDatas[spriteImageName];
var canvas;
if(this._useOffscreen){
canvas = new OffscreenCanvas(spriteImage.width, spriteImage.height);
}
else{
canvas = document.createElement('canvas');
canvas.width = spriteImage.width;
canvas.height = spriteImage.height;
}
var ctx = canvas.getContext('2d');
ctx.putImageData(spriteImage, 0, 0);
var translateOffset = [iconTranslate[0] / spriteImage.width, iconTranslate[1] / spriteImage.height];
iconImg = new openlayer.style.Icon({
img: canvas,
anchorOrigin: anchorOffsetAndIconAnchor.iconAnchor,
anchor: [iconOffset[0] + anchorOffset[0] + translateOffset[0], iconOffset[1] + anchorOffset[1] - translateOffset[1]],
imgSize: [canvas.width, canvas.height],
scale: iconSize
});
iconImg.setOpacity(iconOpacity);
iconImageCache[icon_cache_key] = iconImg;
}
style.setImage(iconImg);
//style.setText(undefined);
};
var VALUE_EXTENT = 4096;
var replays = ["Default", "Polygon", "LineString", "Image", "Symbol", "Text"];
function MvtRenderer2D(options) {
this._mvtStyleClass = options.mvtStyle;
this._openlayer = options.openlayer;
}
Object.defineProperties(MvtRenderer2D.prototype, {
});
MvtRenderer2D.prototype.renderFeatures = function(options) {
var canvas = options.colorCanvas;
var idCanvas = options.idCanvas;
var transform = options.transform;
var layers = options.layers;
var features = options.features;
var tileLevel = options.tileLevel;
var spriteImageCanvas = options.spriteImageCanvas;
var spriteImageDatas = options.spriteImageDatas;
var squaredTolerance = options.squaredTolerance;
var showBillboard = options.showBillboard;
var renderID = options.renderID;
var renderColor = options.renderColor;
var lineWidthExpand = options.lineWidthExpand;
var ol = this._openlayer;
var ctx = canvas.getContext('2d');
var idFeatures = [];
var iconImageObjects = [];
var textObjects = [];
var style = null;
var declutterTree = ol.ext.rbush(9);
var replayGroup = new ol.render.canvas.ReplayGroup(0, [0, 0, VALUE_EXTENT, VALUE_EXTENT], 8, 2, true, declutterTree);
var featureLength = features.length;
for (var r = 0; r < featureLength; r++) {
var feature = features[r];
var sourceLayer = feature.getProperties().layer;
feature.index = sourceLayer + feature.getId();
var featureHasStyle = false;
var layerGroupById = layers[sourceLayer];
var zIndex = 0;
for (var layerId in layerGroupById) {
var layerById = layerGroupById[layerId];
var maxzoom = layerById.mapboxStyleLayer.maxzoom;
var minzoom = layerById.mapboxStyleLayer.minzoom;
if(tileLevel < minzoom || tileLevel > maxzoom){
continue;
}
var filterArray = layerById.filterArray;
if (!when.defined(filterArray)) {
style = this._mvtStyleClass.getStyleByMapboxStyle(layerById.mapboxStyleLayer);
}
else {
var properties = feature.getProperties();
if (MvtFilter.filterTest(properties, filterArray)) {
style = this._mvtStyleClass.getStyleByMapboxStyle(layerById.mapboxStyleLayer);
}
else {
continue;
}
}
if (!when.defined(style)) {
continue;
}
this.createFillPatternForStyle(style, spriteImageCanvas, spriteImageDatas, ctx);
if (when.defined(style.hasTextStyle)) {
var textStyle = this._mvtStyleClass.getTextStyle(style, feature, layerById.mapboxStyleLayer);
textStyle.setZIndex(zIndex);
if(showBillboard){
textObjects.push({
feature : feature,
style : textStyle
});
}
else{
if(renderColor){
ol.renderer.vector.renderFeature_(replayGroup, feature, textStyle, -1);
}
}
}
if (when.defined(style.hasIconImage) && !when.defined(style.getImage())) {
if(showBillboard){
iconImageObjects.push({
feature : feature,
style : layerById.mapboxStyleLayer
});
continue;
}
else{
this._mvtStyleClass.setIconImageForStyle(spriteImageDatas, style, layerById.mapboxStyleLayer);
}
}
style.setZIndex(zIndex);
this.setPickStyleInFeature(feature, style);
zIndex++;
if(renderColor){
ol.renderer.vector.renderFeature_(replayGroup, feature, style, -1);
}
featureHasStyle = true;
}
if (featureHasStyle) {
idFeatures.push(feature);
}
}
if(renderColor){
replayGroup.finish();
var declutterReplays = {};
replayGroup.replay(ctx, transform, 0, {}, replays, declutterReplays);
if (declutterReplays) {
ol.render.canvas.ReplayGroup.replayDeclutter(declutterReplays, ctx, 0.0);
}
}
replayGroup = null;
if(renderID){
this.renderIDtoTexture(transform, idCanvas, idFeatures, 0, squaredTolerance, lineWidthExpand);
}
return {
idFeatures : idFeatures,
iconImageObjects : iconImageObjects,
textObjects : textObjects
}
};
MvtRenderer2D.prototype.renderIDtoTexture = function(transform, canvas, features, layerID, tileTolerance, lineWidthExpand) {
var ol = this._openlayer;
var ctx = canvas.getContext('2d');
var declutterTree = ol.ext.rbush(9);
var replayGroup = new ol.render.canvas.ReplayGroup(0, [0, 0, VALUE_EXTENT, VALUE_EXTENT], 8, 2, true, declutterTree);
var featureLength = features.length;
for (var r = 0; r < featureLength; r++) {
var feature = features[r];
var id = getFeatureID(feature);
var idStyle = this._mvtStyleClass.getIDColorStyle(feature.getGeometry().getType(), id, layerID, feature.lineWidth, feature.radius, lineWidthExpand);
idStyle.setZIndex(feature.zIndex);
ol.renderer.vector.renderFeature_(replayGroup, feature, idStyle, -1);
}
replayGroup.finish();
var declutterReplays = {};
replayGroup.replay(ctx, transform, 0, {}, replays, declutterReplays);
if (declutterReplays) {
ol.render.canvas.ReplayGroup.replayDeclutter(declutterReplays, ctx, 0.0);
}
replayGroup = null;
};
MvtRenderer2D.prototype.createFillPatternForStyle = function(style, spriteImageCanvas, subSpriteImage, ctx){
if(!when.defined(style.fillPatternName)){
return;
}
var patternName = style.fillPatternName;
var patternCanvas = null;
if (when.defined(spriteImageCanvas[patternName])) {
patternCanvas = spriteImageCanvas[patternName];
}
else {
var imageData = subSpriteImage[patternName];
if (!when.defined(imageData)) {
console.log('miss sprite ' + patternName);
return;
}
patternCanvas = document.createElement('canvas');
patternCanvas.width = imageData.width;
patternCanvas.height = imageData.height;
var spriteCtx = patternCanvas.getContext('2d');
spriteCtx.putImageData(imageData, 0, 0);
spriteImageCanvas[patternName] = patternCanvas;
}
style.fill_.color_ = ctx.createPattern(patternCanvas, 'repeat');
};
MvtRenderer2D.prototype.setPickStyleInFeature = function(feature, style){
var ol = this._openlayer;
feature.zIndex = style.getZIndex();
if(when.defined(style.getStroke())){
var styleLineWidth = style.getStroke().getWidth();
if(when.defined(feature.lineWidth)){
feature.lineWidth = Math.max(feature.lineWidth, styleLineWidth);
}
else{
feature.lineWidth = styleLineWidth;
}
}
if(when.defined(style.getImage())){
var imageStyle = style.getImage();
var radius = 1.0;
if(imageStyle instanceof ol.style.Icon ){
var imageSize = imageStyle.getImageSize();
radius = Math.max(imageSize[0], imageSize[1]) / 2.0;
radius -= 1.0;
}
else if(imageStyle instanceof ol.style.Circle ){
radius = imageStyle.getRadius();
}
if(when.defined(feature.radius)){
feature.radius = Math.max(feature.radius, radius);
}
else{
feature.radius = radius;
}
}
};
function getFeatureID(feature) {
var id = feature.getId();
// 只在颜色中记录256*256*256这么大范围的ID，超过这个范围的ID舍去
var discard = Math.floor(id / 16777216);
id = id - discard * 16777216;
return id;
}
function ol() {
}
ol.array = {};
/**
* Performs a binary search on the provided sorted list and returns the index of the item if found. If it can't be found it'll return -1.
* https://github.com/darkskyapp/binary-search
*
* @param {Array.<*>} haystack Items to search through.
* @param {*} needle The item to look for.
* @param {Function=} opt_comparator Comparator function.
* @return {number} The index of the item if found, -1 if not.
*/
ol.array.binarySearch = function(haystack, needle, opt_comparator) {
var mid, cmp;
var comparator = opt_comparator || ol.array.numberSafeCompareFunction;
var low = 0;
var high = haystack.length;
var found = false;
while (low < high) {
/* Note that "(low + high) >>> 1" may overflow, and results in a typecast
* to double (which gives the wrong results). */
mid = low + (high - low >> 1);
cmp = +comparator(haystack[mid], needle);
if (cmp < 0.0) { /* Too low. */
low = mid + 1;
} else { /* Key found or too high */
high = mid;
found = !cmp;
}
}
/* Key not found. */
return found ? low : ~low;
};
/**
* Compare function for array sort that is safe for numbers.
* @param {*} a The first object to be compared.
* @param {*} b The second object to be compared.
* @return {number} A negative number, zero, or a positive number as the first
* argument is less than, equal to, or greater than the second.
*/
ol.array.numberSafeCompareFunction = function(a, b) {
return a > b ? 1 : a < b ? -1 : 0;
};
/**
* Whether the array contains the given object.
* @param {Array.<*>} arr The array to test for the presence of the element.
* @param {*} obj The object for which to test.
* @return {boolean} The object is in the array.
*/
ol.array.includes = function(arr, obj) {
return arr.indexOf(obj) >= 0;
};
/**
* @param {Array.<number>} arr Array.
* @param {number} target Target.
* @param {number} direction 0 means return the nearest, > 0
* means return the largest nearest, < 0 means return the
* smallest nearest.
* @return {number} Index.
*/
ol.array.linearFindNearest = function(arr, target, direction) {
var n = arr.length;
if (arr[0] <= target) {
return 0;
} else if (target <= arr[n - 1]) {
return n - 1;
} else {
var i;
if (direction > 0) {
for (i = 1; i < n; ++i) {
if (arr[i] < target) {
return i - 1;
}
}
} else if (direction < 0) {
for (i = 1; i < n; ++i) {
if (arr[i] <= target) {
return i;
}
}
} else {
for (i = 1; i < n; ++i) {
if (arr[i] == target) {
return i;
} else if (arr[i] < target) {
if (arr[i - 1] - target < target - arr[i]) {
return i - 1;
} else {
return i;
}
}
}
}
return n - 1;
}
};
/**
* @param {Array.<*>} arr Array.
* @param {number} begin Begin index.
* @param {number} end End index.
*/
ol.array.reverseSubArray = function(arr, begin, end) {
while (begin < end) {
var tmp = arr[begin];
arr[begin] = arr[end];
arr[end] = tmp;
++begin;
--end;
}
};
/**
* @param {Array.<VALUE>} arr The array to modify.
* @param {Array.<VALUE>|VALUE} data The elements or arrays of elements
* to add to arr.
* @template VALUE
*/
ol.array.extend = function(arr, data) {
var i;
var extension = Array.isArray(data) ? data : [data];
var length = extension.length;
for (i = 0; i < length; i++) {
arr[arr.length] = extension[i];
}
};
/**
* @param {Array.<VALUE>} arr The array to modify.
* @param {VALUE} obj The element to remove.
* @template VALUE
* @return {boolean} If the element was removed.
*/
ol.array.remove = function(arr, obj) {
var i = arr.indexOf(obj);
var found = i > -1;
if (found) {
arr.splice(i, 1);
}
return found;
};
/**
* @param {Array.<VALUE>} arr The array to search in.
* @param {function(VALUE, number, ?) : boolean} func The function to compare.
* @template VALUE
* @return {VALUE} The element found.
*/
ol.array.find = function(arr, func) {
var length = arr.length >>> 0;
var value;
for (var i = 0; i < length; i++) {
value = arr[i];
if (func(value, i, arr)) {
return value;
}
}
return null;
};
/**
* @param {Array|Uint8ClampedArray} arr1 The first array to compare.
* @param {Array|Uint8ClampedArray} arr2 The second array to compare.
* @return {boolean} Whether the two arrays are equal.
*/
ol.array.equals = function(arr1, arr2) {
var len1 = arr1.length;
if (len1 !== arr2.length) {
return false;
}
for (var i = 0; i < len1; i++) {
if (arr1[i] !== arr2[i]) {
return false;
}
}
return true;
};
/**
* @param {Array.<*>} arr The array to sort (modifies original).
* @param {Function} compareFnc Comparison function.
*/
ol.array.stableSort = function(arr, compareFnc) {
var length = arr.length;
var tmp = Array(arr.length);
var i;
for (i = 0; i < length; i++) {
tmp[i] = {index: i, value: arr[i]};
}
tmp.sort(function(a, b) {
return compareFnc(a.value, b.value) || a.index - b.index;
});
for (i = 0; i < arr.length; i++) {
arr[i] = tmp[i].value;
}
};
/**
* @param {Array.<*>} arr The array to search in.
* @param {Function} func Comparison function.
* @return {number} Return index.
*/
ol.array.findIndex = function(arr, func) {
var index;
var found = !arr.every(function(el, idx) {
index = idx;
return !func(el, idx, arr);
});
return found ? index : -1;
};
/**
* @param {Array.<*>} arr The array to test.
* @param {Function=} opt_func Comparison function.
* @param {boolean=} opt_strict Strictly sorted (default false).
* @return {boolean} Return index.
*/
ol.array.isSorted = function(arr, opt_func, opt_strict) {
var compare = opt_func || ol.array.numberSafeCompareFunction;
return arr.every(function(currentVal, index) {
if (index === 0) {
return true;
}
var res = compare(arr[index - 1], currentVal);
return !(res > 0 || opt_strict && res === 0);
});
};
ol.ASSUME_TOUCH = false;
ol.DEFAULT_MAX_ZOOM = 42;
ol.DEFAULT_MIN_ZOOM = 0;
ol.DEFAULT_RASTER_REPROJECTION_ERROR_THRESHOLD = 0.5;
ol.DEFAULT_TILE_SIZE = 256;
ol.DEFAULT_WMS_VERSION = '1.3.0';
ol.ENABLE_CANVAS = true;
ol.ENABLE_PROJ4JS = true;
ol.ENABLE_RASTER_REPROJECTION = true;
ol.ENABLE_WEBGL = true;
ol.DEBUG_WEBGL = true;
ol.INITIAL_ATLAS_SIZE = 256;
ol.MAX_ATLAS_SIZE = -1;
ol.MOUSEWHEELZOOM_MAXDELTA = 1;
ol.OVERVIEWMAP_MAX_RATIO = 0.75;
ol.OVERVIEWMAP_MIN_RATIO = 0.1;
ol.RASTER_REPROJECTION_MAX_SOURCE_TILES = 100;
ol.RASTER_REPROJECTION_MAX_SUBDIVISION = 10;
ol.RASTER_REPROJECTION_MAX_TRIANGLE_WIDTH = 0.25;
ol.SIMPLIFY_TOLERANCE = 0.5;
ol.WEBGL_TEXTURE_CACHE_HIGH_WATER_MARK = 1024;
ol.VERSION = '';
ol.inherits = function(childCtor, parentCtor) {
childCtor.prototype = Object.create(parentCtor.prototype);
childCtor.prototype.constructor = childCtor;
};
ol.nullFunction = function() {};
ol.getUid = function(obj) {
return obj.ol_uid ||
(obj.ol_uid = ++ol.uidCounter_);
};
ol.asserts = {};
ol.asserts.assert = function(assertion, errorCode) {
};
ol.has = {};
var ua = typeof navigator !== 'undefined' ?
navigator.userAgent.toLowerCase() : '';
ol.has.FIREFOX = ua.indexOf('firefox') !== -1;
ol.has.SAFARI = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') == -1;
ol.has.WEBKIT = ua.indexOf('webkit') !== -1 && ua.indexOf('edge') == -1;
ol.has.MAC = ua.indexOf('macintosh') !== -1;
ol.has.DEVICE_PIXEL_RATIO = 1;
ol.has.CANVAS_LINE_DASH = true;
ol.structs = {};
/**
* @enum {string}
*/
ol.CollectionEventType = {
ADD: 'add',
REMOVE: 'remove'
};
/**
* @enum {string}
*/
ol.ObjectEventType = {
PROPERTYCHANGE: 'propertychange'
};
ol.events = {};
/**
* @param {ol.EventsKey} listenerObj Listener object.
* @return {ol.EventsListenerFunctionType} Bound listener.
*/
ol.events.bindListener_ = function(listenerObj) {
var boundListener = function(evt) {
var listener = listenerObj.listener;
var bindTo = listenerObj.bindTo || listenerObj.target;
if (listenerObj.callOnce) {
ol.events.unlistenByKey(listenerObj);
}
return listener.call(bindTo, evt);
};
listenerObj.boundListener = boundListener;
return boundListener;
};
ol.events.findListener_ = function(listeners, listener, opt_this,
opt_setDeleteIndex) {
var listenerObj;
for (var i = 0, ii = listeners.length; i < ii; ++i) {
listenerObj = listeners[i];
if (listenerObj.listener === listener &&
listenerObj.bindTo === opt_this) {
if (opt_setDeleteIndex) {
listenerObj.deleteIndex = i;
}
return listenerObj;
}
}
return undefined;
};
/**
* @param {ol.EventTargetLike} target Target.
* @param {string} type Type.
* @return {Array.<ol.EventsKey>|undefined} Listeners.
*/
ol.events.getListeners = function(target, type) {
var listenerMap = target.ol_lm;
return listenerMap ? listenerMap[type] : undefined;
};
/**
* Get the lookup of listeners. If one does not exist on the target, it is
* created.
* @param {ol.EventTargetLike} target Target.
* @return {!Object.<string, Array.<ol.EventsKey>>} Map of
* listeners by event type.
* @private
*/
ol.events.getListenerMap_ = function(target) {
var listenerMap = target.ol_lm;
if (!listenerMap) {
listenerMap = target.ol_lm = {};
}
return listenerMap;
};
/**
* Clean up all listener objects of the given type. All properties on the
* listener objects will be removed, and if no listeners remain in the listener
* map, it will be removed from the target.
* @param {ol.EventTargetLike} target Target.
* @param {string} type Type.
* @private
*/
ol.events.removeListeners_ = function(target, type) {
var listeners = ol.events.getListeners(target, type);
if (listeners) {
for (var i = 0, ii = listeners.length; i < ii; ++i) {
target.removeEventListener(type, listeners[i].boundListener);
ol.obj.clear(listeners[i]);
}
listeners.length = 0;
var listenerMap = target.ol_lm;
if (listenerMap) {
delete listenerMap[type];
if (Object.keys(listenerMap).length === 0) {
delete target.ol_lm;
}
}
}
};
ol.events.listen = function(target, type, listener, opt_this, opt_once) {
var listenerMap = ol.events.getListenerMap_(target);
var listeners = listenerMap[type];
if (!listeners) {
listeners = listenerMap[type] = [];
}
var listenerObj = ol.events.findListener_(listeners, listener, opt_this,
false);
if (listenerObj) {
if (!opt_once) {
// Turn one-off listener into a permanent one.
listenerObj.callOnce = false;
}
} else {
listenerObj = /** @type {ol.EventsKey} */ ({
bindTo: opt_this,
callOnce: !!opt_once,
listener: listener,
target: target,
type: type
});
target.addEventListener(type, ol.events.bindListener_(listenerObj));
listeners.push(listenerObj);
}
return listenerObj;
};
ol.events.listenOnce = function(target, type, listener, opt_this) {
return ol.events.listen(target, type, listener, opt_this, true);
};
ol.events.unlisten = function(target, type, listener, opt_this) {
var listeners = ol.events.getListeners(target, type);
if (listeners) {
var listenerObj = ol.events.findListener_(listeners, listener, opt_this,
true);
if (listenerObj) {
ol.events.unlistenByKey(listenerObj);
}
}
};
ol.events.unlistenByKey = function(key) {
if (key && key.target) {
key.target.removeEventListener(key.type, key.boundListener);
var listeners = ol.events.getListeners(key.target, key.type);
if (listeners) {
var i = 'deleteIndex' in key ? key.deleteIndex : listeners.indexOf(key);
if (i !== -1) {
listeners.splice(i, 1);
}
if (listeners.length === 0) {
ol.events.removeListeners_(key.target, key.type);
}
}
ol.obj.clear(key);
}
};
ol.events.unlistenAll = function(target) {
var listenerMap = ol.events.getListenerMap_(target);
for (var type in listenerMap) {
ol.events.removeListeners_(target, type);
}
};
/**
* Objects that need to clean up after themselves.
* @constructor
*/
ol.Disposable = function() {};
ol.Disposable.prototype.disposed_ = false;
ol.Disposable.prototype.dispose = function() {
if (!this.disposed_) {
this.disposed_ = true;
this.disposeInternal();
}
};
ol.Disposable.prototype.disposeInternal = ol.nullFunction;
ol.events.Event = {};
ol.events.Event = function(type) {
this.propagationStopped;
this.type = type;
this.target = null;
};
ol.events.Event.prototype.preventDefault =
/**
* Stop event propagation.
* @function
* @override
* @api
*/
ol.events.Event.prototype.stopPropagation = function() {
this.propagationStopped = true;
};
/**
* @param {Event|ol.events.Event} evt Event
*/
ol.events.Event.stopPropagation = function(evt) {
evt.stopPropagation();
};
/**
* @param {Event|ol.events.Event} evt Event
*/
ol.events.Event.preventDefault = function(evt) {
evt.preventDefault();
};
ol.events.EventTarget = {};
ol.events.EventTarget = function() {
ol.Disposable.call(this);
this.pendingRemovals_ = {};
this.dispatching_ = {};
this.listeners_ = {};
};
ol.inherits(ol.events.EventTarget, ol.Disposable);
/**
* @param {string} type Type.
* @param {ol.EventsListenerFunctionType} listener Listener.
*/
ol.events.EventTarget.prototype.addEventListener = function(type, listener) {
var listeners = this.listeners_[type];
if (!listeners) {
listeners = this.listeners_[type] = [];
}
if (listeners.indexOf(listener) === -1) {
listeners.push(listener);
}
};
ol.events.EventTarget.prototype.dispatchEvent = function(event) {
var evt = typeof event === 'string' ? new ol.events.Event(event) : event;
var type = evt.type;
evt.target = this;
var listeners = this.listeners_[type];
var propagate;
if (listeners) {
if (!(type in this.dispatching_)) {
this.dispatching_[type] = 0;
this.pendingRemovals_[type] = 0;
}
++this.dispatching_[type];
for (var i = 0, ii = listeners.length; i < ii; ++i) {
if (listeners[i].call(this, evt) === false || evt.propagationStopped) {
propagate = false;
break;
}
}
--this.dispatching_[type];
if (this.dispatching_[type] === 0) {
var pendingRemovals = this.pendingRemovals_[type];
delete this.pendingRemovals_[type];
while (pendingRemovals--) {
this.removeEventListener(type, ol.nullFunction);
}
delete this.dispatching_[type];
}
return propagate;
}
};
/**
* @inheritDoc
*/
ol.events.EventTarget.prototype.disposeInternal = function() {
ol.events.unlistenAll(this);
};
/**
* Get the listeners for a specified event type. Listeners are returned in the
* order that they will be called in.
*
* @param {string} type Type.
* @return {Array.<ol.EventsListenerFunctionType>} Listeners.
*/
ol.events.EventTarget.prototype.getListeners = function(type) {
return this.listeners_[type];
};
/**
* @param {string=} opt_type Type. If not provided,
* `true` will be returned if this EventTarget has any listeners.
* @return {boolean} Has listeners.
*/
ol.events.EventTarget.prototype.hasListener = function(opt_type) {
return opt_type ?
opt_type in this.listeners_ :
Object.keys(this.listeners_).length > 0;
};
/**
* @param {string} type Type.
* @param {ol.EventsListenerFunctionType} listener Listener.
*/
ol.events.EventTarget.prototype.removeEventListener = function(type, listener) {
var listeners = this.listeners_[type];
if (listeners) {
var index = listeners.indexOf(listener);
if (type in this.pendingRemovals_) {
// make listener a no-op, and remove later in #dispatchEvent()
listeners[index] = ol.nullFunction;
++this.pendingRemovals_[type];
} else {
listeners.splice(index, 1);
if (listeners.length === 0) {
delete this.listeners_[type];
}
}
}
};
/**
* @enum {string}
* @const
*/
ol.events.EventType = {
CHANGE: 'change',
CLEAR: 'clear',
CLICK: 'click',
DBLCLICK: 'click',
DRAGENTER: 'dragenter',
DRAGOVER: 'dragover',
DROP: 'drop',
ERROR: 'error',
KEYDOWN: 'keydown',
KEYPRESS: 'keypress',
LOAD: 'load',
MOUSEDOWN: 'mousedown',
MOUSEMOVE: 'mousemove',
MOUSEOUT: 'mouseout',
MOUSEUP: 'mouseup',
MOUSEWHEEL: 'mousewheel',
MSPOINTERDOWN: 'MSPointerDown',
RESIZE: 'resize',
TOUCHSTART: 'touchstart',
TOUCHMOVE: 'touchmove',
TOUCHEND: 'touchend',
WHEEL: 'wheel'
};
ol.Observable = function() {
this.revision_ = 0;
};
ol.inherits(ol.Observable, ol.events.EventTarget);
ol.Observable.unByKey = function(key) {
if (Array.isArray(key)) {
for (var i = 0, ii = key.length; i < ii; ++i) {
ol.events.unlistenByKey(key[i]);
}
} else {
ol.events.unlistenByKey(/** @type {ol.EventsKey} */ (key));
}
};
/**
* Increases the revision counter and dispatches a 'change' event.
* @api
*/
ol.Observable.prototype.changed = function() {
++this.revision_;
//this.dispatchEvent(ol.events.EventType.CHANGE);
};
/**
* Dispatches an event and calls all listeners listening for events
* of this type. The event parameter can either be a string or an
* Object with a `type` property.
*
* @param {{type: string,
* target: (EventTarget|ol.events.EventTarget|undefined)}|ol.events.Event|
* string} event Event object.
* @function
* @api
*/
ol.Observable.prototype.dispatchEvent;
/**
* Get the version number for this object. Each time the object is modified,
* its version number will be incremented.
* @return {number} Revision.
* @api
*/
ol.Observable.prototype.getRevision = function() {
return this.revision_;
};
/**
* Listen for a certain type of event.
* @param {string|Array.<string>} type The event type or array of event types.
* @param {function(?): ?} listener The listener function.
* @param {Object=} opt_this The object to use as `this` in `listener`.
* @return {ol.EventsKey|Array.<ol.EventsKey>} Unique key for the listener. If
* called with an array of event types as the first argument, the return
* will be an array of keys.
* @api
*/
ol.Observable.prototype.on = function(type, listener, opt_this) {
if (Array.isArray(type)) {
var len = type.length;
var keys = new Array(len);
for (var i = 0; i < len; ++i) {
keys[i] = ol.events.listen(this, type[i], listener, opt_this);
}
return keys;
} else {
return ol.events.listen(
this, /** @type {string} */ (type), listener, opt_this);
}
};
/**
* Listen once for a certain type of event.
* @param {string|Array.<string>} type The event type or array of event types.
* @param {function(?): ?} listener The listener function.
* @param {Object=} opt_this The object to use as `this` in `listener`.
* @return {ol.EventsKey|Array.<ol.EventsKey>} Unique key for the listener. If
* called with an array of event types as the first argument, the return
* will be an array of keys.
* @api
*/
ol.Observable.prototype.once = function(type, listener, opt_this) {
if (Array.isArray(type)) {
var len = type.length;
var keys = new Array(len);
for (var i = 0; i < len; ++i) {
keys[i] = ol.events.listenOnce(this, type[i], listener, opt_this);
}
return keys;
} else {
return ol.events.listenOnce(
this, /** @type {string} */ (type), listener, opt_this);
}
};
/**
* Unlisten for a certain type of event.
* @param {string|Array.<string>} type The event type or array of event types.
* @param {function(?): ?} listener The listener function.
* @param {Object=} opt_this The object which was used as `this` by the
* `listener`.
* @api
*/
ol.Observable.prototype.un = function(type, listener, opt_this) {
if (Array.isArray(type)) {
for (var i = 0, ii = type.length; i < ii; ++i) {
ol.events.unlisten(this, type[i], listener, opt_this);
}
return;
} else {
ol.events.unlisten(this, /** @type {string} */ (type), listener, opt_this);
}
};
ol.uidCounter_ = 0;
ol.Object = function(opt_values) {
ol.Observable.call(this);
// Call ol.getUid to ensure that the order of objects' ids is the same as
// the order in which they were created. This also helps to ensure that
// object properties are always added in the same order, which helps many
// JavaScript engines generate faster code.
ol.getUid(this);
/**
* @private
* @type {!Object.<string, *>}
*/
this.values_ = {};
if (opt_values !== undefined) {
this.setProperties(opt_values);
}
};
ol.inherits(ol.Object, ol.Observable);
/**
* @private
* @type {Object.<string, string>}
*/
ol.Object.changeEventTypeCache_ = {};
/**
* @param {string} key Key name.
* @return {string} Change name.
*/
ol.Object.getChangeEventType = function(key) {
return ol.Object.changeEventTypeCache_.hasOwnProperty(key) ?
ol.Object.changeEventTypeCache_[key] :
(ol.Object.changeEventTypeCache_[key] = 'change:' + key);
};
/**
* Gets a value.
* @param {string} key Key name.
* @return {*} Value.
* @api
*/
ol.Object.prototype.get = function(key) {
var value;
if (this.values_.hasOwnProperty(key)) {
value = this.values_[key];
}
return value;
};
/**
* Get a list of object property names.
* @return {Array.<string>} List of property names.
* @api
*/
ol.Object.prototype.getKeys = function() {
return Object.keys(this.values_);
};
/**
* Get an object of all property names and values.
* @return {Object.<string, *>} Object.
* @api
*/
ol.Object.prototype.getProperties = function() {
return ol.obj.assign({}, this.values_);
};
/**
* @param {string} key Key name.
* @param {*} oldValue Old value.
*/
ol.Object.prototype.notify = function(key, oldValue) {
// FIX ME
return;
};
/**
* Sets a value.
* @param {string} key Key name.
* @param {*} value Value.
* @param {boolean=} opt_silent Update without triggering an event.
* @api
*/
ol.Object.prototype.set = function(key, value, opt_silent) {
if (opt_silent) {
this.values_[key] = value;
} else {
var oldValue = this.values_[key];
this.values_[key] = value;
if (oldValue !== value) {
this.notify(key, oldValue);
}
}
};
/**
* Sets a collection of key-value pairs. Note that this changes any existing
* properties and adds new ones (it does not remove any existing properties).
* @param {Object.<string, *>} values Values.
* @param {boolean=} opt_silent Update without triggering an event.
* @api
*/
ol.Object.prototype.setProperties = function(values, opt_silent) {
var key;
for (key in values) {
this.set(key, values[key], opt_silent);
}
};
/**
* Unsets a property.
* @param {string} key Key name.
* @param {boolean=} opt_silent Unset without triggering an event.
* @api
*/
ol.Object.prototype.unset = function(key, opt_silent) {
if (key in this.values_) {
var oldValue = this.values_[key];
delete this.values_[key];
if (!opt_silent) {
this.notify(key, oldValue);
}
}
};
ol.Object.Event = function(type, key, oldValue) {
ol.events.Event.call(this, type);
this.key = key;
this.oldValue = oldValue;
};
ol.inherits(ol.Object.Event, ol.events.Event);
ol.functions = {};
/**
* Always returns true.
* @returns {boolean} true.
*/
ol.functions.TRUE = function() {
return true;
};
/**
* Always returns false.
* @returns {boolean} false.
*/
ol.functions.FALSE = function() {
return false;
};
ol.math = {};
ol.math.clamp = function(value, min, max) {
return Math.min(Math.max(value, min), max);
};
ol.math.cosh = (function() {
// Wrapped in a iife, to save the overhead of checking for the native
// implementation on every invocation.
var cosh;
if ('cosh' in Math) {
// The environment supports the native Math.cosh function, use it…
cosh = Math.cosh;
} else {
// … else, use the reference implementation of MDN:
cosh = function(x) {
var y = Math.exp(x);
return (y + 1 / y) / 2;
};
}
return cosh;
}());
/**
* @param {number} x X.
* @return {number} The smallest power of two greater than or equal to x.
*/
ol.math.roundUpToPowerOfTwo = function(x) {
ol.asserts.assert(0 < x, 29); // `x` must be greater than `0`
return Math.pow(2, Math.ceil(Math.log(x) / Math.LN2));
};
ol.math.squaredSegmentDistance = function(x, y, x1, y1, x2, y2) {
var dx = x2 - x1;
var dy = y2 - y1;
if (dx !== 0 || dy !== 0) {
var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);
if (t > 1) {
x1 = x2;
y1 = y2;
} else if (t > 0) {
x1 += dx * t;
y1 += dy * t;
}
}
return ol.math.squaredDistance(x, y, x1, y1);
};
ol.math.squaredDistance = function(x1, y1, x2, y2) {
var dx = x2 - x1;
var dy = y2 - y1;
return dx * dx + dy * dy;
};
ol.math.solveLinearSystem = function(mat) {
var n = mat.length;
for (var i = 0; i < n; i++) {
// Find max in the i-th column (ignoring i - 1 first rows)
var maxRow = i;
var maxEl = Math.abs(mat[i][i]);
for (var r = i + 1; r < n; r++) {
var absValue = Math.abs(mat[r][i]);
if (absValue > maxEl) {
maxEl = absValue;
maxRow = r;
}
}
if (maxEl === 0) {
return null; // matrix is singular
}
// Swap max row with i-th (current) row
var tmp = mat[maxRow];
mat[maxRow] = mat[i];
mat[i] = tmp;
// Subtract the i-th row to make all the remaining rows 0 in the i-th column
for (var j = i + 1; j < n; j++) {
var coef = -mat[j][i] / mat[i][i];
for (var k = i; k < n + 1; k++) {
if (i == k) {
mat[j][k] = 0;
} else {
mat[j][k] += coef * mat[i][k];
}
}
}
}
// Solve Ax=b for upper triangular matrix A (mat)
var x = new Array(n);
for (var l = n - 1; l >= 0; l--) {
x[l] = mat[l][n] / mat[l][l];
for (var m = l - 1; m >= 0; m--) {
mat[m][n] -= mat[m][l] * x[l];
}
}
return x;
};
ol.math.toDegrees = function(angleInRadians) {
return angleInRadians * 180 / Math.PI;
};
ol.math.toRadians = function(angleInDegrees) {
return angleInDegrees * Math.PI / 180;
};
ol.math.modulo = function(a, b) {
var r = a % b;
return r * b < 0 ? r + b : r;
};
ol.math.lerp = function(a, b, x) {
return a + x * (b - a);
};
ol.ImageState = {
IDLE: 0,
LOADING: 1,
LOADED: 2,
ERROR: 3
};
ol.color = {};
ol.color.HEX_COLOR_RE_ = /^#(?:[0-9a-f]{3,4}){1,2}$/i;
ol.color.NAMED_COLOR_RE_ = /^([a-z]*)$/i;
ol.color.asArray = function(color) {
if (Array.isArray(color)) {
return color;
} else {
return ol.color.fromString(/** @type {string} */ (color));
}
};
ol.color.asString = function(color) {
if (typeof color === 'string') {
return color;
} else {
return ol.color.toString(color);
}
};
ol.color.fromNamed = function(color) {
var el = document.createElement('div');
el.style.color = color;
document.body.appendChild(el);
var rgb = getComputedStyle(el).color;
document.body.removeChild(el);
return rgb;
};
ol.color.fromString = (
function() {
// We maintain a small cache of parsed strings. To provide cheap LRU-like
// semantics, whenever the cache grows too large we simply delete an
// arbitrary 25% of the entries.
/**
* @const
* @type {number}
*/
var MAX_CACHE_SIZE = 1024;
/**
* @type {Object.<string, ol.Color>}
*/
var cache = {};
/**
* @type {number}
*/
var cacheSize = 0;
return (
/**
* @param {string} s String.
* @return {ol.Color} Color.
*/
function(s) {
var color;
if (cache.hasOwnProperty(s)) {
color = cache[s];
} else {
if (cacheSize >= MAX_CACHE_SIZE) {
var i = 0;
var key;
for (key in cache) {
if ((i++ & 3) === 0) {
delete cache[key];
--cacheSize;
}
}
}
color = ol.color.fromStringInternal_(s);
cache[s] = color;
++cacheSize;
}
return color;
});
})();
ol.color.fromStringInternal_ = function(s) {
var r, g, b, a, color, parts;
if (ol.color.NAMED_COLOR_RE_.exec(s)) {
s = ol.color.fromNamed(s);
}
if (ol.color.HEX_COLOR_RE_.exec(s)) { // hex
var n = s.length - 1; // number of hex digits
var d; // number of digits per channel
if (n <= 4) {
d = 1;
} else {
d = 2;
}
var hasAlpha = n === 4 || n === 8;
r = parseInt(s.substr(1 + 0 * d, d), 16);
g = parseInt(s.substr(1 + 1 * d, d), 16);
b = parseInt(s.substr(1 + 2 * d, d), 16);
if (hasAlpha) {
a = parseInt(s.substr(1 + 3 * d, d), 16);
} else {
a = 255;
}
if (d == 1) {
r = (r << 4) + r;
g = (g << 4) + g;
b = (b << 4) + b;
if (hasAlpha) {
a = (a << 4) + a;
}
}
color = [r, g, b, a / 255];
} else if (s.indexOf('rgba(') == 0) { // rgba()
parts = s.slice(5, -1).split(',').map(Number);
color = ol.color.normalize(parts);
} else if (s.indexOf('rgb(') == 0) { // rgb()
parts = s.slice(4, -1).split(',').map(Number);
parts.push(1);
color = ol.color.normalize(parts);
} else {
ol.asserts.assert(false, 14); // Invalid color
}
return /** @type {ol.Color} */ (color);
};
/**
* @param {ol.Color} color Color.
* @param {ol.Color=} opt_color Color.
* @return {ol.Color} Clamped color.
*/
ol.color.normalize = function(color, opt_color) {
var result = opt_color || [];
result[0] = ol.math.clamp((color[0] + 0.5) | 0, 0, 255);
result[1] = ol.math.clamp((color[1] + 0.5) | 0, 0, 255);
result[2] = ol.math.clamp((color[2] + 0.5) | 0, 0, 255);
result[3] = ol.math.clamp(color[3], 0, 1);
return result;
};
/**
* @param {ol.Color} color Color.
* @return {string} String.
*/
ol.color.toString = function(color) {
var r = color[0];
if (r != (r | 0)) {
r = (r + 0.5) | 0;
}
var g = color[1];
if (g != (g | 0)) {
g = (g + 0.5) | 0;
}
var b = color[2];
if (b != (b | 0)) {
b = (b + 0.5) | 0;
}
var a = color[3] === undefined ? 1 : color[3];
return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
};
ol.colorlike = {};
ol.colorlike.asColorLike = function(color) {
if (ol.colorlike.isColorLike(color)) {
return /** @type {string|CanvasPattern|CanvasGradient} */ (color);
} else {
return ol.color.asString(/** @type {ol.Color} */ (color));
}
};
ol.colorlike.isColorLike = function(color) {
return (
typeof color === 'string' ||
color instanceof CanvasPattern ||
color instanceof CanvasGradient
);
};
ol.css = {};
ol.css.CLASS_HIDDEN = 'ol-hidden';
ol.css.CLASS_SELECTABLE = 'ol-selectable';
ol.css.CLASS_UNSELECTABLE = 'ol-unselectable';
ol.css.CLASS_UNSUPPORTED = 'ol-unsupported';
ol.css.CLASS_CONTROL = 'ol-control';
ol.css.getFontFamilies = (function() {
var style;
var cache = {};
return function(font) {
if (!style) {
style = document.createElement('div').style;
}
if (!(font in cache)) {
style.font = font;
var family = style.fontFamily;
style.font = '';
if (!family) {
return null;
}
cache[font] = family.split(/,\s?/);
}
return cache[font];
};
})();
ol.dom = {};
/**
* Create an html canvas element and returns its 2d context.
* @param {number=} opt_width Canvas width.
* @param {number=} opt_height Canvas height.
* @return {CanvasRenderingContext2D} The context.
*/
ol.dom.createCanvasContext2D = function(opt_width, opt_height) {
//var canvas = document.createElement('CANVAS');
var canvas;
if (opt_width && opt_height) {
canvas = new OffscreenCanvas(opt_width, opt_height);
}
else{
canvas = new OffscreenCanvas(1, 1);
}
return canvas.getContext('2d');
};
/**
* Get the current computed width for the given element including margin,
* padding and border.
* Equivalent to jQuery's `$(el).outerWidth(true)`.
* @param {!Element} element Element.
* @return {number} The width.
*/
ol.dom.outerWidth = function(element) {
var width = element.offsetWidth;
var style = getComputedStyle(element);
width += parseInt(style.marginLeft, 10) + parseInt(style.marginRight, 10);
return width;
};
/**
* Get the current computed height for the given element including margin,
* padding and border.
* Equivalent to jQuery's `$(el).outerHeight(true)`.
* @param {!Element} element Element.
* @return {number} The height.
*/
ol.dom.outerHeight = function(element) {
var height = element.offsetHeight;
var style = getComputedStyle(element);
height += parseInt(style.marginTop, 10) + parseInt(style.marginBottom, 10);
return height;
};
/**
* @param {Node} newNode Node to replace old node
* @param {Node} oldNode The node to be replaced
*/
ol.dom.replaceNode = function(newNode, oldNode) {
var parent = oldNode.parentNode;
if (parent) {
parent.replaceChild(newNode, oldNode);
}
};
/**
* @param {Node} node The node to remove.
* @returns {Node} The node that was removed or null.
*/
ol.dom.removeNode = function(node) {
return node && node.parentNode ? node.parentNode.removeChild(node) : null;
};
/**
* @param {Node} node The node to remove the children from.
*/
ol.dom.removeChildren = function(node) {
while (node.lastChild) {
node.removeChild(node.lastChild);
}
};
ol.extent = {};
ol.extent.Corner = {
BOTTOM_LEFT: 'bottom-left',
BOTTOM_RIGHT: 'bottom-right',
TOP_LEFT: 'top-left',
TOP_RIGHT: 'top-right'
};
/**
* Relationship to an extent.
* @enum {number}
*/
ol.extent.Relationship = {
UNKNOWN: 0,
INTERSECTING: 1,
ABOVE: 2,
RIGHT: 4,
BELOW: 8,
LEFT: 16
};
/**
* Build an extent that includes all given coordinates.
*
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @return {ol.Extent} Bounding extent.
* @api
*/
ol.extent.boundingExtent = function(coordinates) {
var extent = ol.extent.createEmpty();
for (var i = 0, ii = coordinates.length; i < ii; ++i) {
ol.extent.extendCoordinate(extent, coordinates[i]);
}
return extent;
};
ol.extent.boundingExtentXYs_ = function(xs, ys, opt_extent) {
var minX = Math.min.apply(null, xs);
var minY = Math.min.apply(null, ys);
var maxX = Math.max.apply(null, xs);
var maxY = Math.max.apply(null, ys);
return ol.extent.createOrUpdate(minX, minY, maxX, maxY, opt_extent);
};
ol.extent.buffer = function(extent, value, opt_extent) {
if (opt_extent) {
opt_extent[0] = extent[0] - value;
opt_extent[1] = extent[1] - value;
opt_extent[2] = extent[2] + value;
opt_extent[3] = extent[3] + value;
return opt_extent;
} else {
return [
extent[0] - value,
extent[1] - value,
extent[2] + value,
extent[3] + value
];
}
};
ol.extent.clone = function(extent, opt_extent) {
if (opt_extent) {
opt_extent[0] = extent[0];
opt_extent[1] = extent[1];
opt_extent[2] = extent[2];
opt_extent[3] = extent[3];
return opt_extent;
} else {
return extent.slice();
}
};
ol.extent.closestSquaredDistanceXY = function(extent, x, y) {
var dx, dy;
if (x < extent[0]) {
dx = extent[0] - x;
} else if (extent[2] < x) {
dx = x - extent[2];
} else {
dx = 0;
}
if (y < extent[1]) {
dy = extent[1] - y;
} else if (extent[3] < y) {
dy = y - extent[3];
} else {
dy = 0;
}
return dx * dx + dy * dy;
};
/**
* Check if the passed coordinate is contained or on the edge of the extent.
*
* @param {ol.Extent} extent Extent.
* @param {ol.Coordinate} coordinate Coordinate.
* @return {boolean} The coordinate is contained in the extent.
* @api
*/
ol.extent.containsCoordinate = function(extent, coordinate) {
return ol.extent.containsXY(extent, coordinate[0], coordinate[1]);
};
/**
* Check if one extent contains another.
*
* An extent is deemed contained if it lies completely within the other extent,
* including if they share one or more edges.
*
* @param {ol.Extent} extent1 Extent 1.
* @param {ol.Extent} extent2 Extent 2.
* @return {boolean} The second extent is contained by or on the edge of the
* first.
* @api
*/
ol.extent.containsExtent = function(extent1, extent2) {
return extent1[0] <= extent2[0] && extent2[2] <= extent1[2] &&
extent1[1] <= extent2[1] && extent2[3] <= extent1[3];
};
/**
* Check if the passed coordinate is contained or on the edge of the extent.
*
* @param {ol.Extent} extent Extent.
* @param {number} x X coordinate.
* @param {number} y Y coordinate.
* @return {boolean} The x, y values are contained in the extent.
* @api
*/
ol.extent.containsXY = function(extent, x, y) {
return extent[0] <= x && x <= extent[2] && extent[1] <= y && y <= extent[3];
};
/**
* Get the relationship between a coordinate and extent.
* @param {ol.Extent} extent The extent.
* @param {ol.Coordinate} coordinate The coordinate.
* @return {number} The relationship (bitwise compare with
* ol.extent.Relationship).
*/
ol.extent.coordinateRelationship = function(extent, coordinate) {
var minX = extent[0];
var minY = extent[1];
var maxX = extent[2];
var maxY = extent[3];
var x = coordinate[0];
var y = coordinate[1];
var relationship = ol.extent.Relationship.UNKNOWN;
if (x < minX) {
relationship = relationship | ol.extent.Relationship.LEFT;
} else if (x > maxX) {
relationship = relationship | ol.extent.Relationship.RIGHT;
}
if (y < minY) {
relationship = relationship | ol.extent.Relationship.BELOW;
} else if (y > maxY) {
relationship = relationship | ol.extent.Relationship.ABOVE;
}
if (relationship === ol.extent.Relationship.UNKNOWN) {
relationship = ol.extent.Relationship.INTERSECTING;
}
return relationship;
};
/**
* Create an empty extent.
* @return {ol.Extent} Empty extent.
* @api
*/
ol.extent.createEmpty = function() {
return [Infinity, Infinity, -Infinity, -Infinity];
};
/**
* Create a new extent or update the provided extent.
* @param {number} minX Minimum X.
* @param {number} minY Minimum Y.
* @param {number} maxX Maximum X.
* @param {number} maxY Maximum Y.
* @param {ol.Extent=} opt_extent Destination extent.
* @return {ol.Extent} Extent.
*/
ol.extent.createOrUpdate = function(minX, minY, maxX, maxY, opt_extent) {
if (opt_extent) {
opt_extent[0] = minX;
opt_extent[1] = minY;
opt_extent[2] = maxX;
opt_extent[3] = maxY;
return opt_extent;
} else {
return [minX, minY, maxX, maxY];
}
};
/**
* Create a new empty extent or make the provided one empty.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} Extent.
*/
ol.extent.createOrUpdateEmpty = function(opt_extent) {
return ol.extent.createOrUpdate(
Infinity, Infinity, -Infinity, -Infinity, opt_extent);
};
/**
* @param {ol.Coordinate} coordinate Coordinate.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} Extent.
*/
ol.extent.createOrUpdateFromCoordinate = function(coordinate, opt_extent) {
var x = coordinate[0];
var y = coordinate[1];
return ol.extent.createOrUpdate(x, y, x, y, opt_extent);
};
/**
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} Extent.
*/
ol.extent.createOrUpdateFromCoordinates = function(coordinates, opt_extent) {
var extent = ol.extent.createOrUpdateEmpty(opt_extent);
return ol.extent.extendCoordinates(extent, coordinates);
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} Extent.
*/
ol.extent.createOrUpdateFromFlatCoordinates = function(flatCoordinates, offset, end, stride, opt_extent) {
var extent = ol.extent.createOrUpdateEmpty(opt_extent);
return ol.extent.extendFlatCoordinates(
extent, flatCoordinates, offset, end, stride);
};
/**
* @param {Array.<Array.<ol.Coordinate>>} rings Rings.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} Extent.
*/
ol.extent.createOrUpdateFromRings = function(rings, opt_extent) {
var extent = ol.extent.createOrUpdateEmpty(opt_extent);
return ol.extent.extendRings(extent, rings);
};
/**
* Determine if two extents are equivalent.
* @param {ol.Extent} extent1 Extent 1.
* @param {ol.Extent} extent2 Extent 2.
* @return {boolean} The two extents are equivalent.
* @api
*/
ol.extent.equals = function(extent1, extent2) {
return extent1[0] == extent2[0] && extent1[2] == extent2[2] &&
extent1[1] == extent2[1] && extent1[3] == extent2[3];
};
/**
* Modify an extent to include another extent.
* @param {ol.Extent} extent1 The extent to be modified.
* @param {ol.Extent} extent2 The extent that will be included in the first.
* @return {ol.Extent} A reference to the first (extended) extent.
* @api
*/
ol.extent.extend = function(extent1, extent2) {
if (extent2[0] < extent1[0]) {
extent1[0] = extent2[0];
}
if (extent2[2] > extent1[2]) {
extent1[2] = extent2[2];
}
if (extent2[1] < extent1[1]) {
extent1[1] = extent2[1];
}
if (extent2[3] > extent1[3]) {
extent1[3] = extent2[3];
}
return extent1;
};
/**
* @param {ol.Extent} extent Extent.
* @param {ol.Coordinate} coordinate Coordinate.
*/
ol.extent.extendCoordinate = function(extent, coordinate) {
if (coordinate[0] < extent[0]) {
extent[0] = coordinate[0];
}
if (coordinate[0] > extent[2]) {
extent[2] = coordinate[0];
}
if (coordinate[1] < extent[1]) {
extent[1] = coordinate[1];
}
if (coordinate[1] > extent[3]) {
extent[3] = coordinate[1];
}
};
/**
* @param {ol.Extent} extent Extent.
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @return {ol.Extent} Extent.
*/
ol.extent.extendCoordinates = function(extent, coordinates) {
var i, ii;
for (i = 0, ii = coordinates.length; i < ii; ++i) {
ol.extent.extendCoordinate(extent, coordinates[i]);
}
return extent;
};
/**
* @param {ol.Extent} extent Extent.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @return {ol.Extent} Extent.
*/
ol.extent.extendFlatCoordinates = function(extent, flatCoordinates, offset, end, stride) {
for (; offset < end; offset += stride) {
ol.extent.extendXY(
extent, flatCoordinates[offset], flatCoordinates[offset + 1]);
}
return extent;
};
/**
* @param {ol.Extent} extent Extent.
* @param {Array.<Array.<ol.Coordinate>>} rings Rings.
* @return {ol.Extent} Extent.
*/
ol.extent.extendRings = function(extent, rings) {
var i, ii;
for (i = 0, ii = rings.length; i < ii; ++i) {
ol.extent.extendCoordinates(extent, rings[i]);
}
return extent;
};
/**
* @param {ol.Extent} extent Extent.
* @param {number} x X.
* @param {number} y Y.
*/
ol.extent.extendXY = function(extent, x, y) {
extent[0] = Math.min(extent[0], x);
extent[1] = Math.min(extent[1], y);
extent[2] = Math.max(extent[2], x);
extent[3] = Math.max(extent[3], y);
};
/**
* This function calls `callback` for each corner of the extent. If the
* callback returns a truthy value the function returns that value
* immediately. Otherwise the function returns `false`.
* @param {ol.Extent} extent Extent.
* @param {function(this:T, ol.Coordinate): S} callback Callback.
* @param {T=} opt_this Value to use as `this` when executing `callback`.
* @return {S|boolean} Value.
* @template S, T
*/
ol.extent.forEachCorner = function(extent, callback, opt_this) {
var val;
val = callback.call(opt_this, ol.extent.getBottomLeft(extent));
if (val) {
return val;
}
val = callback.call(opt_this, ol.extent.getBottomRight(extent));
if (val) {
return val;
}
val = callback.call(opt_this, ol.extent.getTopRight(extent));
if (val) {
return val;
}
val = callback.call(opt_this, ol.extent.getTopLeft(extent));
if (val) {
return val;
}
return false;
};
/**
* Get the size of an extent.
* @param {ol.Extent} extent Extent.
* @return {number} Area.
* @api
*/
ol.extent.getArea = function(extent) {
var area = 0;
if (!ol.extent.isEmpty(extent)) {
area = ol.extent.getWidth(extent) * ol.extent.getHeight(extent);
}
return area;
};
/**
* Get the bottom left coordinate of an extent.
* @param {ol.Extent} extent Extent.
* @return {ol.Coordinate} Bottom left coordinate.
* @api
*/
ol.extent.getBottomLeft = function(extent) {
return [extent[0], extent[1]];
};
/**
* Get the bottom right coordinate of an extent.
* @param {ol.Extent} extent Extent.
* @return {ol.Coordinate} Bottom right coordinate.
* @api
*/
ol.extent.getBottomRight = function(extent) {
return [extent[2], extent[1]];
};
/**
* Get the center coordinate of an extent.
* @param {ol.Extent} extent Extent.
* @return {ol.Coordinate} Center.
* @api
*/
ol.extent.getCenter = function(extent) {
return [(extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2];
};
/**
* Get a corner coordinate of an extent.
* @param {ol.Extent} extent Extent.
* @param {ol.extent.Corner} corner Corner.
* @return {ol.Coordinate} Corner coordinate.
*/
ol.extent.getCorner = function(extent, corner) {
var coordinate;
if (corner === ol.extent.Corner.BOTTOM_LEFT) {
coordinate = ol.extent.getBottomLeft(extent);
} else if (corner === ol.extent.Corner.BOTTOM_RIGHT) {
coordinate = ol.extent.getBottomRight(extent);
} else if (corner === ol.extent.Corner.TOP_LEFT) {
coordinate = ol.extent.getTopLeft(extent);
} else if (corner === ol.extent.Corner.TOP_RIGHT) {
coordinate = ol.extent.getTopRight(extent);
} else {
ol.asserts.assert(false, 13); // Invalid corner
}
return /** @type {!ol.Coordinate} */ (coordinate);
};
/**
* @param {ol.Extent} extent1 Extent 1.
* @param {ol.Extent} extent2 Extent 2.
* @return {number} Enlarged area.
*/
ol.extent.getEnlargedArea = function(extent1, extent2) {
var minX = Math.min(extent1[0], extent2[0]);
var minY = Math.min(extent1[1], extent2[1]);
var maxX = Math.max(extent1[2], extent2[2]);
var maxY = Math.max(extent1[3], extent2[3]);
return (maxX - minX) * (maxY - minY);
};
/**
* @param {ol.Coordinate} center Center.
* @param {number} resolution Resolution.
* @param {number} rotation Rotation.
* @param {ol.Size} size Size.
* @param {ol.Extent=} opt_extent Destination extent.
* @return {ol.Extent} Extent.
*/
ol.extent.getForViewAndSize = function(center, resolution, rotation, size, opt_extent) {
var dx = resolution * size[0] / 2;
var dy = resolution * size[1] / 2;
var cosRotation = Math.cos(rotation);
var sinRotation = Math.sin(rotation);
var xCos = dx * cosRotation;
var xSin = dx * sinRotation;
var yCos = dy * cosRotation;
var ySin = dy * sinRotation;
var x = center[0];
var y = center[1];
var x0 = x - xCos + ySin;
var x1 = x - xCos - ySin;
var x2 = x + xCos - ySin;
var x3 = x + xCos + ySin;
var y0 = y - xSin - yCos;
var y1 = y - xSin + yCos;
var y2 = y + xSin + yCos;
var y3 = y + xSin - yCos;
return ol.extent.createOrUpdate(
Math.min(x0, x1, x2, x3), Math.min(y0, y1, y2, y3),
Math.max(x0, x1, x2, x3), Math.max(y0, y1, y2, y3),
opt_extent);
};
/**
* Get the height of an extent.
* @param {ol.Extent} extent Extent.
* @return {number} Height.
* @api
*/
ol.extent.getHeight = function(extent) {
return extent[3] - extent[1];
};
/**
* @param {ol.Extent} extent1 Extent 1.
* @param {ol.Extent} extent2 Extent 2.
* @return {number} Intersection area.
*/
ol.extent.getIntersectionArea = function(extent1, extent2) {
var intersection = ol.extent.getIntersection(extent1, extent2);
return ol.extent.getArea(intersection);
};
/**
* Get the intersection of two extents.
* @param {ol.Extent} extent1 Extent 1.
* @param {ol.Extent} extent2 Extent 2.
* @param {ol.Extent=} opt_extent Optional extent to populate with intersection.
* @return {ol.Extent} Intersecting extent.
* @api
*/
ol.extent.getIntersection = function(extent1, extent2, opt_extent) {
var intersection = opt_extent ? opt_extent : ol.extent.createEmpty();
if (ol.extent.intersects(extent1, extent2)) {
if (extent1[0] > extent2[0]) {
intersection[0] = extent1[0];
} else {
intersection[0] = extent2[0];
}
if (extent1[1] > extent2[1]) {
intersection[1] = extent1[1];
} else {
intersection[1] = extent2[1];
}
if (extent1[2] < extent2[2]) {
intersection[2] = extent1[2];
} else {
intersection[2] = extent2[2];
}
if (extent1[3] < extent2[3]) {
intersection[3] = extent1[3];
} else {
intersection[3] = extent2[3];
}
}
return intersection;
};
/**
* @param {ol.Extent} extent Extent.
* @return {number} Margin.
*/
ol.extent.getMargin = function(extent) {
return ol.extent.getWidth(extent) + ol.extent.getHeight(extent);
};
/**
* Get the size (width, height) of an extent.
* @param {ol.Extent} extent The extent.
* @return {ol.Size} The extent size.
* @api
*/
ol.extent.getSize = function(extent) {
return [extent[2] - extent[0], extent[3] - extent[1]];
};
/**
* Get the top left coordinate of an extent.
* @param {ol.Extent} extent Extent.
* @return {ol.Coordinate} Top left coordinate.
* @api
*/
ol.extent.getTopLeft = function(extent) {
return [extent[0], extent[3]];
};
/**
* Get the top right coordinate of an extent.
* @param {ol.Extent} extent Extent.
* @return {ol.Coordinate} Top right coordinate.
* @api
*/
ol.extent.getTopRight = function(extent) {
return [extent[2], extent[3]];
};
/**
* Get the width of an extent.
* @param {ol.Extent} extent Extent.
* @return {number} Width.
* @api
*/
ol.extent.getWidth = function(extent) {
return extent[2] - extent[0];
};
/**
* Determine if one extent intersects another.
* @param {ol.Extent} extent1 Extent 1.
* @param {ol.Extent} extent2 Extent.
* @return {boolean} The two extents intersect.
* @api
*/
ol.extent.intersects = function(extent1, extent2) {
return extent1[0] <= extent2[2] &&
extent1[2] >= extent2[0] &&
extent1[1] <= extent2[3] &&
extent1[3] >= extent2[1];
};
/**
* Determine if an extent is empty.
* @param {ol.Extent} extent Extent.
* @return {boolean} Is empty.
* @api
*/
ol.extent.isEmpty = function(extent) {
return extent[2] < extent[0] || extent[3] < extent[1];
};
/**
* @param {ol.Extent} extent Extent.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} Extent.
*/
ol.extent.returnOrUpdate = function(extent, opt_extent) {
if (opt_extent) {
opt_extent[0] = extent[0];
opt_extent[1] = extent[1];
opt_extent[2] = extent[2];
opt_extent[3] = extent[3];
return opt_extent;
} else {
return extent;
}
};
/**
* @param {ol.Extent} extent Extent.
* @param {number} value Value.
*/
ol.extent.scaleFromCenter = function(extent, value) {
var deltaX = ((extent[2] - extent[0]) / 2) * (value - 1);
var deltaY = ((extent[3] - extent[1]) / 2) * (value - 1);
extent[0] -= deltaX;
extent[2] += deltaX;
extent[1] -= deltaY;
extent[3] += deltaY;
};
/**
* Determine if the segment between two coordinates intersects (crosses,
* touches, or is contained by) the provided extent.
* @param {ol.Extent} extent The extent.
* @param {ol.Coordinate} start Segment start coordinate.
* @param {ol.Coordinate} end Segment end coordinate.
* @return {boolean} The segment intersects the extent.
*/
ol.extent.intersectsSegment = function(extent, start, end) {
var intersects = false;
var startRel = ol.extent.coordinateRelationship(extent, start);
var endRel = ol.extent.coordinateRelationship(extent, end);
if (startRel === ol.extent.Relationship.INTERSECTING ||
endRel === ol.extent.Relationship.INTERSECTING) {
intersects = true;
} else {
var minX = extent[0];
var minY = extent[1];
var maxX = extent[2];
var maxY = extent[3];
var startX = start[0];
var startY = start[1];
var endX = end[0];
var endY = end[1];
var slope = (endY - startY) / (endX - startX);
var x, y;
if (!!(endRel & ol.extent.Relationship.ABOVE) &&
!(startRel & ol.extent.Relationship.ABOVE)) {
// potentially intersects top
x = endX - ((endY - maxY) / slope);
intersects = x >= minX && x <= maxX;
}
if (!intersects && !!(endRel & ol.extent.Relationship.RIGHT) &&
!(startRel & ol.extent.Relationship.RIGHT)) {
// potentially intersects right
y = endY - ((endX - maxX) * slope);
intersects = y >= minY && y <= maxY;
}
if (!intersects && !!(endRel & ol.extent.Relationship.BELOW) &&
!(startRel & ol.extent.Relationship.BELOW)) {
// potentially intersects bottom
x = endX - ((endY - minY) / slope);
intersects = x >= minX && x <= maxX;
}
if (!intersects && !!(endRel & ol.extent.Relationship.LEFT) &&
!(startRel & ol.extent.Relationship.LEFT)) {
// potentially intersects left
y = endY - ((endX - minX) * slope);
intersects = y >= minY && y <= maxY;
}
}
return intersects;
};
/**
* Apply a transform function to the extent.
* @param {ol.Extent} extent Extent.
* @param {ol.TransformFunction} transformFn Transform function. Called with
* [minX, minY, maxX, maxY] extent coordinates.
* @param {ol.Extent=} opt_extent Destination extent.
* @return {ol.Extent} Extent.
* @api
*/
ol.extent.applyTransform = function(extent, transformFn, opt_extent) {
var coordinates = [
extent[0], extent[1],
extent[0], extent[3],
extent[2], extent[1],
extent[2], extent[3]
];
transformFn(coordinates, coordinates, 2);
var xs = [coordinates[0], coordinates[2], coordinates[4], coordinates[6]];
var ys = [coordinates[1], coordinates[3], coordinates[5], coordinates[7]];
return ol.extent.boundingExtentXYs_(xs, ys, opt_extent);
};
ol.obj = {};
/**
* Polyfill for Object.assign(). Assigns enumerable and own properties from
* one or more source objects to a target object.
*
* @see https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
* @param {!Object} target The target object.
* @param {...Object} var_sources The source object(s).
* @return {!Object} The modified target object.
*/
ol.obj.assign = (typeof Object.assign === 'function') ? Object.assign : function(target, var_sources) {
if (target === undefined || target === null) {
throw new TypeError('Cannot convert undefined or null to object');
}
var output = Object(target);
for (var i = 1, ii = arguments.length; i < ii; ++i) {
var source = arguments[i];
if (source !== undefined && source !== null) {
for (var key in source) {
if (source.hasOwnProperty(key)) {
output[key] = source[key];
}
}
}
}
return output;
};
/**
* Removes all properties from an object.
* @param {Object} object The object to clear.
*/
ol.obj.clear = function(object) {
for (var property in object) {
delete object[property];
}
};
/**
* Get an array of property values from an object.
* @param {Object<K,V>} object The object from which to get the values.
* @return {!Array<V>} The property values.
* @template K,V
*/
ol.obj.getValues = function(object) {
var values = [];
for (var property in object) {
values.push(object[property]);
}
return values;
};
/**
* Determine if an object has any properties.
* @param {Object} object The object to check.
* @return {boolean} The object is empty.
*/
ol.obj.isEmpty = function(object) {
var property;
for (property in object) {
return false;
}
return !property;
};
ol.transform = {};
/**
* @private
* @type {ol.Transform}
*/
ol.transform.tmp_ = new Array(6);
/**
* Create an identity transform.
* @return {!ol.Transform} Identity transform.
*/
ol.transform.create = function() {
return [1, 0, 0, 1, 0, 0];
};
/**
* Resets the given transform to an identity transform.
* @param {!ol.Transform} transform Transform.
* @return {!ol.Transform} Transform.
*/
ol.transform.reset = function(transform) {
return ol.transform.set(transform, 1, 0, 0, 1, 0, 0);
};
/**
* Multiply the underlying matrices of two transforms and return the result in
* the first transform.
* @param {!ol.Transform} transform1 Transform parameters of matrix 1.
* @param {!ol.Transform} transform2 Transform parameters of matrix 2.
* @return {!ol.Transform} transform1 multiplied with transform2.
*/
ol.transform.multiply = function(transform1, transform2) {
var a1 = transform1[0];
var b1 = transform1[1];
var c1 = transform1[2];
var d1 = transform1[3];
var e1 = transform1[4];
var f1 = transform1[5];
var a2 = transform2[0];
var b2 = transform2[1];
var c2 = transform2[2];
var d2 = transform2[3];
var e2 = transform2[4];
var f2 = transform2[5];
transform1[0] = a1 * a2 + c1 * b2;
transform1[1] = b1 * a2 + d1 * b2;
transform1[2] = a1 * c2 + c1 * d2;
transform1[3] = b1 * c2 + d1 * d2;
transform1[4] = a1 * e2 + c1 * f2 + e1;
transform1[5] = b1 * e2 + d1 * f2 + f1;
return transform1;
};
/**
* Set the transform components a-f on a given transform.
* @param {!ol.Transform} transform Transform.
* @param {number} a The a component of the transform.
* @param {number} b The b component of the transform.
* @param {number} c The c component of the transform.
* @param {number} d The d component of the transform.
* @param {number} e The e component of the transform.
* @param {number} f The f component of the transform.
* @return {!ol.Transform} Matrix with transform applied.
*/
ol.transform.set = function(transform, a, b, c, d, e, f) {
transform[0] = a;
transform[1] = b;
transform[2] = c;
transform[3] = d;
transform[4] = e;
transform[5] = f;
return transform;
};
/**
* Set transform on one matrix from another matrix.
* @param {!ol.Transform} transform1 Matrix to set transform to.
* @param {!ol.Transform} transform2 Matrix to set transform from.
* @return {!ol.Transform} transform1 with transform from transform2 applied.
*/
ol.transform.setFromArray = function(transform1, transform2) {
transform1[0] = transform2[0];
transform1[1] = transform2[1];
transform1[2] = transform2[2];
transform1[3] = transform2[3];
transform1[4] = transform2[4];
transform1[5] = transform2[5];
return transform1;
};
/**
* Transforms the given coordinate with the given transform returning the
* resulting, transformed coordinate. The coordinate will be modified in-place.
*
* @param {ol.Transform} transform The transformation.
* @param {ol.Coordinate|ol.Pixel} coordinate The coordinate to transform.
* @return {ol.Coordinate|ol.Pixel} return coordinate so that operations can be
* chained together.
*/
ol.transform.apply = function(transform, coordinate) {
var x = coordinate[0], y = coordinate[1];
coordinate[0] = transform[0] * x + transform[2] * y + transform[4];
coordinate[1] = transform[1] * x + transform[3] * y + transform[5];
return coordinate;
};
/**
* Applies rotation to the given transform.
* @param {!ol.Transform} transform Transform.
* @param {number} angle Angle in radians.
* @return {!ol.Transform} The rotated transform.
*/
ol.transform.rotate = function(transform, angle) {
var cos = Math.cos(angle);
var sin = Math.sin(angle);
return ol.transform.multiply(transform,
ol.transform.set(ol.transform.tmp_, cos, sin, -sin, cos, 0, 0));
};
/**
* Applies scale to a given transform.
* @param {!ol.Transform} transform Transform.
* @param {number} x Scale factor x.
* @param {number} y Scale factor y.
* @return {!ol.Transform} The scaled transform.
*/
ol.transform.scale = function(transform, x, y) {
return ol.transform.multiply(transform,
ol.transform.set(ol.transform.tmp_, x, 0, 0, y, 0, 0));
};
/**
* Applies translation to the given transform.
* @param {!ol.Transform} transform Transform.
* @param {number} dx Translation x.
* @param {number} dy Translation y.
* @return {!ol.Transform} The translated transform.
*/
ol.transform.translate = function(transform, dx, dy) {
return ol.transform.multiply(transform,
ol.transform.set(ol.transform.tmp_, 1, 0, 0, 1, dx, dy));
};
/**
* Creates a composite transform given an initial translation, scale, rotation, and
* final translation (in that order only, not commutative).
* @param {!ol.Transform} transform The transform (will be modified in place).
* @param {number} dx1 Initial translation x.
* @param {number} dy1 Initial translation y.
* @param {number} sx Scale factor x.
* @param {number} sy Scale factor y.
* @param {number} angle Rotation (in counter-clockwise radians).
* @param {number} dx2 Final translation x.
* @param {number} dy2 Final translation y.
* @return {!ol.Transform} The composite transform.
*/
ol.transform.compose = function(transform, dx1, dy1, sx, sy, angle, dx2, dy2) {
var sin = Math.sin(angle);
var cos = Math.cos(angle);
transform[0] = sx * cos;
transform[1] = sy * sin;
transform[2] = -sx * sin;
transform[3] = sy * cos;
transform[4] = dx2 * sx * cos - dy2 * sx * sin + dx1;
transform[5] = dx2 * sy * sin + dy2 * sy * cos + dy1;
return transform;
};
/**
* Invert the given transform.
* @param {!ol.Transform} transform Transform.
* @return {!ol.Transform} Inverse of the transform.
*/
ol.transform.invert = function(transform) {
var det = ol.transform.determinant(transform);
//ol.asserts.assert(det !== 0, 32); // Transformation matrix cannot be inverted
var a = transform[0];
var b = transform[1];
var c = transform[2];
var d = transform[3];
var e = transform[4];
var f = transform[5];
transform[0] = d / det;
transform[1] = -b / det;
transform[2] = -c / det;
transform[3] = a / det;
transform[4] = (c * f - d * e) / det;
transform[5] = -(a * f - b * e) / det;
return transform;
};
/**
* Returns the determinant of the given matrix.
* @param {!ol.Transform} mat Matrix.
* @return {number} Determinant.
*/
ol.transform.determinant = function(mat) {
return mat[0] * mat[3] - mat[1] * mat[2];
};
ol.geom = {};
ol.geom.flat = {};
ol.geom.flat.center = {};
ol.geom.flat.reverse = {};
ol.geom.flat.orient = {};
ol.geom.flat.transform = {};
ol.geom.flat.transform.transform2D = function(flatCoordinates, offset, end, stride, transform, opt_dest) {
var dest = opt_dest ? opt_dest : [];
var i = 0;
var j;
for (j = offset; j < end; j += stride) {
var x = flatCoordinates[j];
var y = flatCoordinates[j + 1];
dest[i++] = transform[0] * x + transform[2] * y + transform[4];
dest[i++] = transform[1] * x + transform[3] * y + transform[5];
}
if (opt_dest && dest.length != i) {
dest.length = i;
}
return dest;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {number} angle Angle.
* @param {Array.<number>} anchor Rotation anchor point.
* @param {Array.<number>=} opt_dest Destination.
* @return {Array.<number>} Transformed coordinates.
*/
ol.geom.flat.transform.rotate = function(flatCoordinates, offset, end, stride, angle, anchor, opt_dest) {
var dest = opt_dest ? opt_dest : [];
var cos = Math.cos(angle);
var sin = Math.sin(angle);
var anchorX = anchor[0];
var anchorY = anchor[1];
var i = 0;
for (var j = offset; j < end; j += stride) {
var deltaX = flatCoordinates[j] - anchorX;
var deltaY = flatCoordinates[j + 1] - anchorY;
dest[i++] = anchorX + deltaX * cos - deltaY * sin;
dest[i++] = anchorY + deltaX * sin + deltaY * cos;
for (var k = j + 2; k < j + stride; ++k) {
dest[i++] = flatCoordinates[k];
}
}
if (opt_dest && dest.length != i) {
dest.length = i;
}
return dest;
};
/**
* Scale the coordinates.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {number} sx Scale factor in the x-direction.
* @param {number} sy Scale factor in the y-direction.
* @param {Array.<number>} anchor Scale anchor point.
* @param {Array.<number>=} opt_dest Destination.
* @return {Array.<number>} Transformed coordinates.
*/
ol.geom.flat.transform.scale = function(flatCoordinates, offset, end, stride, sx, sy, anchor, opt_dest) {
var dest = opt_dest ? opt_dest : [];
var anchorX = anchor[0];
var anchorY = anchor[1];
var i = 0;
for (var j = offset; j < end; j += stride) {
var deltaX = flatCoordinates[j] - anchorX;
var deltaY = flatCoordinates[j + 1] - anchorY;
dest[i++] = anchorX + sx * deltaX;
dest[i++] = anchorY + sy * deltaY;
for (var k = j + 2; k < j + stride; ++k) {
dest[i++] = flatCoordinates[k];
}
}
if (opt_dest && dest.length != i) {
dest.length = i;
}
return dest;
};
/**
* The coordinate layout for geometries, indicating whether a 3rd or 4th z ('Z')
* or measure ('M') coordinate is available. Supported values are `'XY'`,
* `'XYZ'`, `'XYM'`, `'XYZM'`.
* @enum {string}
*/
ol.geom.GeometryLayout = {
XY: 'XY',
XYZ: 'XYZ',
XYM: 'XYM',
XYZM: 'XYZM'
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
*/
ol.geom.flat.reverse.coordinates = function(flatCoordinates, offset, end, stride) {
while (offset < end - stride) {
var i;
for (i = 0; i < stride; ++i) {
var tmp = flatCoordinates[offset + i];
flatCoordinates[offset + i] = flatCoordinates[end - stride + i];
flatCoordinates[end - stride + i] = tmp;
}
offset += stride;
end -= stride;
}
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @return {boolean} Is clockwise.
*/
ol.geom.flat.orient.linearRingIsClockwise = function(flatCoordinates, offset, end, stride) {
// http://tinyurl.com/clockwise-method
// https://github.com/OSGeo/gdal/blob/trunk/gdal/ogr/ogrlinearring.cpp
var edge = 0;
var x1 = flatCoordinates[end - stride];
var y1 = flatCoordinates[end - stride + 1];
for (; offset < end; offset += stride) {
var x2 = flatCoordinates[offset];
var y2 = flatCoordinates[offset + 1];
edge += (x2 - x1) * (y2 + y1);
x1 = x2;
y1 = y2;
}
return edge > 0;
};
/**
* Determines if linear rings are oriented. By default, left-hand orientation
* is tested (first ring must be clockwise, remaining rings counter-clockwise).
* To test for right-hand orientation, use the `opt_right` argument.
*
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<number>} ends Array of end indexes.
* @param {number} stride Stride.
* @param {boolean=} opt_right Test for right-hand orientation
* (counter-clockwise exterior ring and clockwise interior rings).
* @return {boolean} Rings are correctly oriented.
*/
ol.geom.flat.orient.linearRingsAreOriented = function(flatCoordinates, offset, ends, stride, opt_right) {
var right = opt_right !== undefined ? opt_right : false;
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
var isClockwise = ol.geom.flat.orient.linearRingIsClockwise(
flatCoordinates, offset, end, stride);
if (i === 0) {
if ((right && isClockwise) || (!right && !isClockwise)) {
return false;
}
} else {
if ((right && !isClockwise) || (!right && isClockwise)) {
return false;
}
}
offset = end;
}
return true;
};
/**
* Determines if linear rings are oriented. By default, left-hand orientation
* is tested (first ring must be clockwise, remaining rings counter-clockwise).
* To test for right-hand orientation, use the `opt_right` argument.
*
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<Array.<number>>} endss Array of array of end indexes.
* @param {number} stride Stride.
* @param {boolean=} opt_right Test for right-hand orientation
* (counter-clockwise exterior ring and clockwise interior rings).
* @return {boolean} Rings are correctly oriented.
*/
ol.geom.flat.orient.linearRingssAreOriented = function(flatCoordinates, offset, endss, stride, opt_right) {
var i, ii;
for (i = 0, ii = endss.length; i < ii; ++i) {
if (!ol.geom.flat.orient.linearRingsAreOriented(
flatCoordinates, offset, endss[i], stride, opt_right)) {
return false;
}
}
return true;
};
/**
* Orient coordinates in a flat array of linear rings. By default, rings
* are oriented following the left-hand rule (clockwise for exterior and
* counter-clockwise for interior rings). To orient according to the
* right-hand rule, use the `opt_right` argument.
*
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<number>} ends Ends.
* @param {number} stride Stride.
* @param {boolean=} opt_right Follow the right-hand rule for orientation.
* @return {number} End.
*/
ol.geom.flat.orient.orientLinearRings = function(flatCoordinates, offset, ends, stride, opt_right) {
var right = opt_right !== undefined ? opt_right : false;
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
var isClockwise = ol.geom.flat.orient.linearRingIsClockwise(
flatCoordinates, offset, end, stride);
var reverse = i === 0 ?
(right && isClockwise) || (!right && !isClockwise) :
(right && !isClockwise) || (!right && isClockwise);
if (reverse) {
ol.geom.flat.reverse.coordinates(flatCoordinates, offset, end, stride);
}
offset = end;
}
return offset;
};
/**
* Orient coordinates in a flat array of linear rings. By default, rings
* are oriented following the left-hand rule (clockwise for exterior and
* counter-clockwise for interior rings). To orient according to the
* right-hand rule, use the `opt_right` argument.
*
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<Array.<number>>} endss Array of array of end indexes.
* @param {number} stride Stride.
* @param {boolean=} opt_right Follow the right-hand rule for orientation.
* @return {number} End.
*/
ol.geom.flat.orient.orientLinearRingss = function(flatCoordinates, offset, endss, stride, opt_right) {
var i, ii;
for (i = 0, ii = endss.length; i < ii; ++i) {
offset = ol.geom.flat.orient.orientLinearRings(
flatCoordinates, offset, endss[i], stride, opt_right);
}
return offset;
};
ol.geom.flat.simplify = {};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {number} squaredTolerance Squared tolerance.
* @param {boolean} highQuality Highest quality.
* @param {Array.<number>=} opt_simplifiedFlatCoordinates Simplified flat
* coordinates.
* @return {Array.<number>} Simplified line string.
*/
ol.geom.flat.simplify.lineString = function(flatCoordinates, offset, end,
stride, squaredTolerance, highQuality, opt_simplifiedFlatCoordinates) {
var simplifiedFlatCoordinates = opt_simplifiedFlatCoordinates !== undefined ?
opt_simplifiedFlatCoordinates : [];
if (!highQuality) {
end = ol.geom.flat.simplify.radialDistance(flatCoordinates, offset, end,
stride, squaredTolerance,
simplifiedFlatCoordinates, 0);
flatCoordinates = simplifiedFlatCoordinates;
offset = 0;
stride = 2;
}
simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeucker(
flatCoordinates, offset, end, stride, squaredTolerance,
simplifiedFlatCoordinates, 0);
return simplifiedFlatCoordinates;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {number} squaredTolerance Squared tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.douglasPeucker = function(flatCoordinates, offset, end,
stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {
var n = (end - offset) / stride;
if (n < 3) {
for (; offset < end; offset += stride) {
simplifiedFlatCoordinates[simplifiedOffset++] =
flatCoordinates[offset];
simplifiedFlatCoordinates[simplifiedOffset++] =
flatCoordinates[offset + 1];
}
return simplifiedOffset;
}
/** @type {Array.<number>} */
var markers = new Array(n);
markers[0] = 1;
markers[n - 1] = 1;
/** @type {Array.<number>} */
var stack = [offset, end - stride];
var index = 0;
var i;
while (stack.length > 0) {
var last = stack.pop();
var first = stack.pop();
var maxSquaredDistance = 0;
var x1 = flatCoordinates[first];
var y1 = flatCoordinates[first + 1];
var x2 = flatCoordinates[last];
var y2 = flatCoordinates[last + 1];
for (i = first + stride; i < last; i += stride) {
var x = flatCoordinates[i];
var y = flatCoordinates[i + 1];
var squaredDistance = ol.math.squaredSegmentDistance(
x, y, x1, y1, x2, y2);
if (squaredDistance > maxSquaredDistance) {
index = i;
maxSquaredDistance = squaredDistance;
}
}
if (maxSquaredDistance > squaredTolerance) {
markers[(index - offset) / stride] = 1;
if (first + stride < index) {
stack.push(first, index);
}
if (index + stride < last) {
stack.push(index, last);
}
}
}
for (i = 0; i < n; ++i) {
if (markers[i]) {
simplifiedFlatCoordinates[simplifiedOffset++] =
flatCoordinates[offset + i * stride];
simplifiedFlatCoordinates[simplifiedOffset++] =
flatCoordinates[offset + i * stride + 1];
}
}
return simplifiedOffset;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<number>} ends Ends.
* @param {number} stride Stride.
* @param {number} squaredTolerance Squared tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @param {Array.<number>} simplifiedEnds Simplified ends.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.douglasPeuckers = function(flatCoordinates, offset,
ends, stride, squaredTolerance, simplifiedFlatCoordinates,
simplifiedOffset, simplifiedEnds) {
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
simplifiedOffset = ol.geom.flat.simplify.douglasPeucker(
flatCoordinates, offset, end, stride, squaredTolerance,
simplifiedFlatCoordinates, simplifiedOffset);
simplifiedEnds.push(simplifiedOffset);
offset = end;
}
return simplifiedOffset;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<Array.<number>>} endss Endss.
* @param {number} stride Stride.
* @param {number} squaredTolerance Squared tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @param {Array.<Array.<number>>} simplifiedEndss Simplified endss.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.douglasPeuckerss = function(
flatCoordinates, offset, endss, stride, squaredTolerance,
simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {
var i, ii;
for (i = 0, ii = endss.length; i < ii; ++i) {
var ends = endss[i];
var simplifiedEnds = [];
simplifiedOffset = ol.geom.flat.simplify.douglasPeuckers(
flatCoordinates, offset, ends, stride, squaredTolerance,
simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);
simplifiedEndss.push(simplifiedEnds);
offset = ends[ends.length - 1];
}
return simplifiedOffset;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {number} squaredTolerance Squared tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.radialDistance = function(flatCoordinates, offset, end,
stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {
if (end <= offset + stride) {
// zero or one point, no simplification possible, so copy and return
for (; offset < end; offset += stride) {
simplifiedFlatCoordinates[simplifiedOffset++] = flatCoordinates[offset];
simplifiedFlatCoordinates[simplifiedOffset++] =
flatCoordinates[offset + 1];
}
return simplifiedOffset;
}
var x1 = flatCoordinates[offset];
var y1 = flatCoordinates[offset + 1];
// copy first point
simplifiedFlatCoordinates[simplifiedOffset++] = x1;
simplifiedFlatCoordinates[simplifiedOffset++] = y1;
var x2 = x1;
var y2 = y1;
for (offset += stride; offset < end; offset += stride) {
x2 = flatCoordinates[offset];
y2 = flatCoordinates[offset + 1];
if (ol.math.squaredDistance(x1, y1, x2, y2) > squaredTolerance) {
// copy point at offset
simplifiedFlatCoordinates[simplifiedOffset++] = x2;
simplifiedFlatCoordinates[simplifiedOffset++] = y2;
x1 = x2;
y1 = y2;
}
}
if (x2 != x1 || y2 != y1) {
// copy last point
simplifiedFlatCoordinates[simplifiedOffset++] = x2;
simplifiedFlatCoordinates[simplifiedOffset++] = y2;
}
return simplifiedOffset;
};
/**
* @param {number} value Value.
* @param {number} tolerance Tolerance.
* @return {number} Rounded value.
*/
ol.geom.flat.simplify.snap = function(value, tolerance) {
return tolerance * Math.round(value / tolerance);
};
/**
* Simplifies a line string using an algorithm designed by Tim Schaub.
* Coordinates are snapped to the nearest value in a virtual grid and
* consecutive duplicate coordinates are discarded. This effectively preserves
* topology as the simplification of any subsection of a line string is
* independent of the rest of the line string. This means that, for examples,
* the common edge between two polygons will be simplified to the same line
* string independently in both polygons. This implementation uses a single
* pass over the coordinates and eliminates intermediate collinear points.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {number} tolerance Tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.quantize = function(flatCoordinates, offset, end, stride,
tolerance, simplifiedFlatCoordinates, simplifiedOffset) {
// do nothing if the line is empty
if (offset == end) {
return simplifiedOffset;
}
// snap the first coordinate (P1)
var x1 = ol.geom.flat.simplify.snap(flatCoordinates[offset], tolerance);
var y1 = ol.geom.flat.simplify.snap(flatCoordinates[offset + 1], tolerance);
offset += stride;
// add the first coordinate to the output
simplifiedFlatCoordinates[simplifiedOffset++] = x1;
simplifiedFlatCoordinates[simplifiedOffset++] = y1;
// find the next coordinate that does not snap to the same value as the first
// coordinate (P2)
var x2, y2;
do {
x2 = ol.geom.flat.simplify.snap(flatCoordinates[offset], tolerance);
y2 = ol.geom.flat.simplify.snap(flatCoordinates[offset + 1], tolerance);
offset += stride;
if (offset == end) {
// all coordinates snap to the same value, the line collapses to a point
// push the last snapped value anyway to ensure that the output contains
// at least two points
// FIXME should we really return at least two points anyway?
simplifiedFlatCoordinates[simplifiedOffset++] = x2;
simplifiedFlatCoordinates[simplifiedOffset++] = y2;
return simplifiedOffset;
}
} while (x2 == x1 && y2 == y1);
while (offset < end) {
var x3, y3;
// snap the next coordinate (P3)
x3 = ol.geom.flat.simplify.snap(flatCoordinates[offset], tolerance);
y3 = ol.geom.flat.simplify.snap(flatCoordinates[offset + 1], tolerance);
offset += stride;
// skip P3 if it is equal to P2
if (x3 == x2 && y3 == y2) {
continue;
}
// calculate the delta between P1 and P2
var dx1 = x2 - x1;
var dy1 = y2 - y1;
// calculate the delta between P3 and P1
var dx2 = x3 - x1;
var dy2 = y3 - y1;
// if P1, P2, and P3 are colinear and P3 is further from P1 than P2 is from
// P1 in the same direction then P2 is on the straight line between P1 and
// P3
if ((dx1 * dy2 == dy1 * dx2) &&
((dx1 < 0 && dx2 < dx1) || dx1 == dx2 || (dx1 > 0 && dx2 > dx1)) &&
((dy1 < 0 && dy2 < dy1) || dy1 == dy2 || (dy1 > 0 && dy2 > dy1))) {
// discard P2 and set P2 = P3
x2 = x3;
y2 = y3;
continue;
}
// either P1, P2, and P3 are not colinear, or they are colinear but P3 is
// between P3 and P1 or on the opposite half of the line to P2. add P2,
// and continue with P1 = P2 and P2 = P3
simplifiedFlatCoordinates[simplifiedOffset++] = x2;
simplifiedFlatCoordinates[simplifiedOffset++] = y2;
x1 = x2;
y1 = y2;
x2 = x3;
y2 = y3;
}
// add the last point (P2)
simplifiedFlatCoordinates[simplifiedOffset++] = x2;
simplifiedFlatCoordinates[simplifiedOffset++] = y2;
return simplifiedOffset;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<number>} ends Ends.
* @param {number} stride Stride.
* @param {number} tolerance Tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @param {Array.<number>} simplifiedEnds Simplified ends.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.quantizes = function(
flatCoordinates, offset, ends, stride,
tolerance,
simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds) {
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
simplifiedOffset = ol.geom.flat.simplify.quantize(
flatCoordinates, offset, end, stride,
tolerance,
simplifiedFlatCoordinates, simplifiedOffset);
simplifiedEnds.push(simplifiedOffset);
offset = end;
}
return simplifiedOffset;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<Array.<number>>} endss Endss.
* @param {number} stride Stride.
* @param {number} tolerance Tolerance.
* @param {Array.<number>} simplifiedFlatCoordinates Simplified flat
* coordinates.
* @param {number} simplifiedOffset Simplified offset.
* @param {Array.<Array.<number>>} simplifiedEndss Simplified endss.
* @return {number} Simplified offset.
*/
ol.geom.flat.simplify.quantizess = function(
flatCoordinates, offset, endss, stride,
tolerance,
simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {
var i, ii;
for (i = 0, ii = endss.length; i < ii; ++i) {
var ends = endss[i];
var simplifiedEnds = [];
simplifiedOffset = ol.geom.flat.simplify.quantizes(
flatCoordinates, offset, ends, stride,
tolerance,
simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);
simplifiedEndss.push(simplifiedEnds);
offset = ends[ends.length - 1];
}
return simplifiedOffset;
};
ol.geom.GeometryType = {
POINT: 'Point',
LINE_STRING: 'LineString',
LINEAR_RING: 'LinearRing',
POLYGON: 'Polygon',
MULTI_POINT: 'MultiPoint',
MULTI_LINE_STRING: 'MultiLineString',
MULTI_POLYGON: 'MultiPolygon',
GEOMETRY_COLLECTION: 'GeometryCollection',
CIRCLE: 'Circle'
};
/**
* @classdesc
* Abstract base class; normally only used for creating subclasses and not
* instantiated in apps.
* Base class for vector geometries.
*
* To get notified of changes to the geometry, register a listener for the
* generic `change` event on your geometry instance.
*
* @constructor
* @abstract
* @extends {ol.Object}
* @api
*/
ol.geom.Geometry = function() {
ol.Object.call(this);
/**
* @private
* @type {ol.Extent}
*/
this.extent_ = ol.extent.createEmpty();
/**
* @private
* @type {number}
*/
this.extentRevision_ = -1;
/**
* @protected
* @type {Object.<string, ol.geom.Geometry>}
*/
this.simplifiedGeometryCache = {};
/**
* @protected
* @type {number}
*/
this.simplifiedGeometryMaxMinSquaredTolerance = 0;
/**
* @protected
* @type {number}
*/
this.simplifiedGeometryRevision = 0;
/**
* @private
* @type {ol.Transform}
*/
this.tmpTransform_ = ol.transform.create();
};
ol.inherits(ol.geom.Geometry, ol.Object);
/**
* Make a complete copy of the geometry.
* @abstract
* @return {!ol.geom.Geometry} Clone.
*/
ol.geom.Geometry.prototype.clone = function() {};
/**
* @abstract
* @param {number} x X.
* @param {number} y Y.
* @param {ol.Coordinate} closestPoint Closest point.
* @param {number} minSquaredDistance Minimum squared distance.
* @return {number} Minimum squared distance.
*/
ol.geom.Geometry.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {};
/**
* Return the closest point of the geometry to the passed point as
* {@link ol.Coordinate coordinate}.
* @param {ol.Coordinate} point Point.
* @param {ol.Coordinate=} opt_closestPoint Closest point.
* @return {ol.Coordinate} Closest point.
* @api
*/
ol.geom.Geometry.prototype.getClosestPoint = function(point, opt_closestPoint) {
var closestPoint = opt_closestPoint ? opt_closestPoint : [NaN, NaN];
this.closestPointXY(point[0], point[1], closestPoint, Infinity);
return closestPoint;
};
/**
* Returns true if this geometry includes the specified coordinate. If the
* coordinate is on the boundary of the geometry, returns false.
* @param {ol.Coordinate} coordinate Coordinate.
* @return {boolean} Contains coordinate.
* @api
*/
ol.geom.Geometry.prototype.intersectsCoordinate = function(coordinate) {
return this.containsXY(coordinate[0], coordinate[1]);
};
/**
* @abstract
* @param {ol.Extent} extent Extent.
* @protected
* @return {ol.Extent} extent Extent.
*/
ol.geom.Geometry.prototype.computeExtent = function(extent) {};
/**
* @param {number} x X.
* @param {number} y Y.
* @return {boolean} Contains (x, y).
*/
ol.geom.Geometry.prototype.containsXY = ol.functions.FALSE;
/**
* Get the extent of the geometry.
* @param {ol.Extent=} opt_extent Extent.
* @return {ol.Extent} extent Extent.
* @api
*/
ol.geom.Geometry.prototype.getExtent = function(opt_extent) {
if (this.extentRevision_ != this.getRevision()) {
this.extent_ = this.computeExtent(this.extent_);
this.extentRevision_ = this.getRevision();
}
return ol.extent.returnOrUpdate(this.extent_, opt_extent);
};
/**
* Rotate the geometry around a given coordinate. This modifies the geometry
* coordinates in place.
* @abstract
* @param {number} angle Rotation angle in radians.
* @param {ol.Coordinate} anchor The rotation center.
* @api
*/
ol.geom.Geometry.prototype.rotate = function(angle, anchor) {};
/**
* Scale the geometry (with an optional origin). This modifies the geometry
* coordinates in place.
* @abstract
* @param {number} sx The scaling factor in the x-direction.
* @param {number=} opt_sy The scaling factor in the y-direction (defaults to
* sx).
* @param {ol.Coordinate=} opt_anchor The scale origin (defaults to the center
* of the geometry extent).
* @api
*/
ol.geom.Geometry.prototype.scale = function(sx, opt_sy, opt_anchor) {};
/**
* Create a simplified version of this geometry. For linestrings, this uses
* the the {@link
* https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm
* Douglas Peucker} algorithm. For polygons, a quantization-based
* simplification is used to preserve topology.
* @function
* @param {number} tolerance The tolerance distance for simplification.
* @return {ol.geom.Geometry} A new, simplified version of the original
* geometry.
* @api
*/
ol.geom.Geometry.prototype.simplify = function(tolerance) {
return this.getSimplifiedGeometry(tolerance * tolerance);
};
/**
* Create a simplified version of this geometry using the Douglas Peucker
* algorithm.
* @see https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm
* @abstract
* @param {number} squaredTolerance Squared tolerance.
* @return {ol.geom.Geometry} Simplified geometry.
*/
ol.geom.Geometry.prototype.getSimplifiedGeometry = function(squaredTolerance) {};
/**
* Get the type of this geometry.
* @abstract
* @return {ol.geom.GeometryType} Geometry type.
*/
ol.geom.Geometry.prototype.getType = function() {};
/**
* Apply a transform function to each coordinate of the geometry.
* The geometry is modified in place.
* If you do not want the geometry modified in place, first `clone()` it and
* then use this function on the clone.
* @abstract
* @param {ol.TransformFunction} transformFn Transform.
*/
ol.geom.Geometry.prototype.applyTransform = function(transformFn) {};
/**
* Test if the geometry and the passed extent intersect.
* @abstract
* @param {ol.Extent} extent Extent.
* @return {boolean} `true` if the geometry and the extent intersect.
*/
ol.geom.Geometry.prototype.intersectsExtent = function(extent) {};
/**
* Translate the geometry. This modifies the geometry coordinates in place. If
* instead you want a new geometry, first `clone()` this geometry.
* @abstract
* @param {number} deltaX Delta X.
* @param {number} deltaY Delta Y.
*/
ol.geom.Geometry.prototype.translate = function(deltaX, deltaY) {};
/**
* Transform each coordinate of the geometry from one coordinate reference
* system to another. The geometry is modified in place.
* For example, a line will be transformed to a line and a circle to a circle.
* If you do not want the geometry modified in place, first `clone()` it and
* then use this function on the clone.
*
* @param {ol.ProjectionLike} source The current projection. Can be a
* string identifier or a {@link ol.proj.Projection} object.
* @param {ol.ProjectionLike} destination The desired projection. Can be a
* string identifier or a {@link ol.proj.Projection} object.
* @return {ol.geom.Geometry} This geometry. Note that original geometry is
* modified in place.
* @api
*/
ol.geom.Geometry.prototype.transform = function(source, destination) {
var tmpTransform = this.tmpTransform_;
source = ol.proj.get(source);
var transformFn = source.getUnits() == ol.proj.Units.TILE_PIXELS ?
function(inCoordinates, outCoordinates, stride) {
var pixelExtent = source.getExtent();
var projectedExtent = source.getWorldExtent();
var scale = ol.extent.getHeight(projectedExtent) / ol.extent.getHeight(pixelExtent);
ol.transform.compose(tmpTransform,
projectedExtent[0], projectedExtent[3],
scale, -scale, 0,
0, 0);
ol.geom.flat.transform.transform2D(inCoordinates, 0, inCoordinates.length, stride,
tmpTransform, outCoordinates);
return ol.proj.getTransform(source, destination)(inCoordinates, outCoordinates, stride);
} :
ol.proj.getTransform(source, destination);
this.applyTransform(transformFn);
return this;
};
/**
* @classdesc
* Abstract base class; only used for creating subclasses; do not instantiate
* in apps, as cannot be rendered.
*
* @constructor
* @abstract
* @extends {ol.geom.Geometry}
* @api
*/
ol.geom.SimpleGeometry = function() {
ol.geom.Geometry.call(this);
/**
* @protected
* @type {ol.geom.GeometryLayout}
*/
this.layout = ol.geom.GeometryLayout.XY;
/**
* @protected
* @type {number}
*/
this.stride = 2;
/**
* @protected
* @type {Array.<number>}
*/
this.flatCoordinates = null;
};
ol.inherits(ol.geom.SimpleGeometry, ol.geom.Geometry);
/**
* @param {number} stride Stride.
* @private
* @return {ol.geom.GeometryLayout} layout Layout.
*/
ol.geom.SimpleGeometry.getLayoutForStride_ = function(stride) {
var layout;
if (stride == 2) {
layout = ol.geom.GeometryLayout.XY;
} else if (stride == 3) {
layout = ol.geom.GeometryLayout.XYZ;
} else if (stride == 4) {
layout = ol.geom.GeometryLayout.XYZM;
}
return /** @type {ol.geom.GeometryLayout} */ (layout);
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @return {number} Stride.
*/
ol.geom.SimpleGeometry.getStrideForLayout = function(layout) {
var stride;
if (layout == ol.geom.GeometryLayout.XY) {
stride = 2;
} else if (layout == ol.geom.GeometryLayout.XYZ || layout == ol.geom.GeometryLayout.XYM) {
stride = 3;
} else if (layout == ol.geom.GeometryLayout.XYZM) {
stride = 4;
}
return /** @type {number} */ (stride);
};
/**
* @inheritDoc
*/
ol.geom.SimpleGeometry.prototype.containsXY = ol.functions.FALSE;
/**
* @inheritDoc
*/
ol.geom.SimpleGeometry.prototype.computeExtent = function(extent) {
return ol.extent.createOrUpdateFromFlatCoordinates(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
extent);
};
/**
* @abstract
* @return {Array} Coordinates.
*/
ol.geom.SimpleGeometry.prototype.getCoordinates = function() {};
/**
* Return the first coordinate of the geometry.
* @return {ol.Coordinate} First coordinate.
* @api
*/
ol.geom.SimpleGeometry.prototype.getFirstCoordinate = function() {
return this.flatCoordinates.slice(0, this.stride);
};
/**
* @return {Array.<number>} Flat coordinates.
*/
ol.geom.SimpleGeometry.prototype.getFlatCoordinates = function() {
return this.flatCoordinates;
};
/**
* Return the last coordinate of the geometry.
* @return {ol.Coordinate} Last point.
* @api
*/
ol.geom.SimpleGeometry.prototype.getLastCoordinate = function() {
return this.flatCoordinates.slice(this.flatCoordinates.length - this.stride);
};
/**
* Return the {@link ol.geom.GeometryLayout layout} of the geometry.
* @return {ol.geom.GeometryLayout} Layout.
* @api
*/
ol.geom.SimpleGeometry.prototype.getLayout = function() {
return this.layout;
};
/**
* @inheritDoc
*/
ol.geom.SimpleGeometry.prototype.getSimplifiedGeometry = function(squaredTolerance) {
if (this.simplifiedGeometryRevision != this.getRevision()) {
ol.obj.clear(this.simplifiedGeometryCache);
this.simplifiedGeometryMaxMinSquaredTolerance = 0;
this.simplifiedGeometryRevision = this.getRevision();
}
// If squaredTolerance is negative or if we know that simplification will not
// have any effect then just return this.
if (squaredTolerance < 0 ||
(this.simplifiedGeometryMaxMinSquaredTolerance !== 0 &&
squaredTolerance <= this.simplifiedGeometryMaxMinSquaredTolerance)) {
return this;
}
var key = squaredTolerance.toString();
if (this.simplifiedGeometryCache.hasOwnProperty(key)) {
return this.simplifiedGeometryCache[key];
} else {
var simplifiedGeometry =
this.getSimplifiedGeometryInternal(squaredTolerance);
var simplifiedFlatCoordinates = simplifiedGeometry.getFlatCoordinates();
if (simplifiedFlatCoordinates.length < this.flatCoordinates.length) {
this.simplifiedGeometryCache[key] = simplifiedGeometry;
return simplifiedGeometry;
} else {
// Simplification did not actually remove any coordinates. We now know
// that any calls to getSimplifiedGeometry with a squaredTolerance less
// than or equal to the current squaredTolerance will also not have any
// effect. This allows us to short circuit simplification (saving CPU
// cycles) and prevents the cache of simplified geometries from filling
// up with useless identical copies of this geometry (saving memory).
this.simplifiedGeometryMaxMinSquaredTolerance = squaredTolerance;
return this;
}
}
};
/**
* @param {number} squaredTolerance Squared tolerance.
* @return {ol.geom.SimpleGeometry} Simplified geometry.
* @protected
*/
ol.geom.SimpleGeometry.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
return this;
};
/**
* @return {number} Stride.
*/
ol.geom.SimpleGeometry.prototype.getStride = function() {
return this.stride;
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @protected
*/
ol.geom.SimpleGeometry.prototype.setFlatCoordinatesInternal = function(layout, flatCoordinates) {
this.stride = ol.geom.SimpleGeometry.getStrideForLayout(layout);
this.layout = layout;
this.flatCoordinates = flatCoordinates;
};
/**
* @abstract
* @param {Array} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
*/
ol.geom.SimpleGeometry.prototype.setCoordinates = function(coordinates, opt_layout) {};
/**
* @param {ol.geom.GeometryLayout|undefined} layout Layout.
* @param {Array} coordinates Coordinates.
* @param {number} nesting Nesting.
* @protected
*/
ol.geom.SimpleGeometry.prototype.setLayout = function(layout, coordinates, nesting) {
/** @type {number} */
var stride;
if (layout) {
stride = ol.geom.SimpleGeometry.getStrideForLayout(layout);
} else {
var i;
for (i = 0; i < nesting; ++i) {
if (coordinates.length === 0) {
this.layout = ol.geom.GeometryLayout.XY;
this.stride = 2;
return;
} else {
coordinates = /** @type {Array} */ (coordinates[0]);
}
}
stride = coordinates.length;
layout = ol.geom.SimpleGeometry.getLayoutForStride_(stride);
}
this.layout = layout;
this.stride = stride;
};
/**
* @inheritDoc
* @api
*/
ol.geom.SimpleGeometry.prototype.applyTransform = function(transformFn) {
if (this.flatCoordinates) {
transformFn(this.flatCoordinates, this.flatCoordinates, this.stride);
this.changed();
}
};
/**
* @inheritDoc
* @api
*/
ol.geom.SimpleGeometry.prototype.rotate = function(angle, anchor) {
var flatCoordinates = this.getFlatCoordinates();
if (flatCoordinates) {
var stride = this.getStride();
ol.geom.flat.transform.rotate(
flatCoordinates, 0, flatCoordinates.length,
stride, angle, anchor, flatCoordinates);
this.changed();
}
};
/**
* @inheritDoc
* @api
*/
ol.geom.SimpleGeometry.prototype.scale = function(sx, opt_sy, opt_anchor) {
var sy = opt_sy;
if (sy === undefined) {
sy = sx;
}
var anchor = opt_anchor;
if (!anchor) {
anchor = ol.extent.getCenter(this.getExtent());
}
var flatCoordinates = this.getFlatCoordinates();
if (flatCoordinates) {
var stride = this.getStride();
ol.geom.flat.transform.scale(
flatCoordinates, 0, flatCoordinates.length,
stride, sx, sy, anchor, flatCoordinates);
this.changed();
}
};
/**
* @inheritDoc
* @api
*/
ol.geom.SimpleGeometry.prototype.translate = function(deltaX, deltaY) {
var flatCoordinates = this.getFlatCoordinates();
if (flatCoordinates) {
var stride = this.getStride();
ol.geom.flat.transform.translate(
flatCoordinates, 0, flatCoordinates.length, stride,
deltaX, deltaY, flatCoordinates);
this.changed();
}
};
/**
* @param {ol.geom.SimpleGeometry} simpleGeometry Simple geometry.
* @param {ol.Transform} transform Transform.
* @param {Array.<number>=} opt_dest Destination.
* @return {Array.<number>} Transformed flat coordinates.
*/
ol.geom.SimpleGeometry.transform2D = function(simpleGeometry, transform, opt_dest) {
var flatCoordinates = simpleGeometry.getFlatCoordinates();
if (!flatCoordinates) {
return null;
} else {
var stride = simpleGeometry.getStride();
return ol.geom.flat.transform.transform2D(
flatCoordinates, 0, flatCoordinates.length, stride,
transform, opt_dest);
}
};
ol.geom.Polygon = function(coordinates, opt_layout) {
ol.geom.SimpleGeometry.call(this);
/**
* @type {Array.<number>}
* @private
*/
this.ends_ = [];
/**
* @private
* @type {number}
*/
this.flatInteriorPointRevision_ = -1;
/**
* @private
* @type {ol.Coordinate}
*/
this.flatInteriorPoint_ = null;
/**
* @private
* @type {number}
*/
this.maxDelta_ = -1;
/**
* @private
* @type {number}
*/
this.maxDeltaRevision_ = -1;
/**
* @private
* @type {number}
*/
this.orientedRevision_ = -1;
/**
* @private
* @type {Array.<number>}
*/
this.orientedFlatCoordinates_ = null;
this.setCoordinates(coordinates, opt_layout);
};
ol.inherits(ol.geom.Polygon, ol.geom.SimpleGeometry);
/**
* Append the passed linear ring to this polygon.
* @param {ol.geom.LinearRing} linearRing Linear ring.
* @api
*/
ol.geom.Polygon.prototype.appendLinearRing = function(linearRing) {
if (!this.flatCoordinates) {
this.flatCoordinates = linearRing.getFlatCoordinates().slice();
} else {
ol.array.extend(this.flatCoordinates, linearRing.getFlatCoordinates());
}
this.ends_.push(this.flatCoordinates.length);
this.changed();
};
/**
* Make a complete copy of the geometry.
* @return {!ol.geom.Polygon} Clone.
* @override
* @api
*/
ol.geom.Polygon.prototype.clone = function() {
var polygon = new ol.geom.Polygon(null);
polygon.setFlatCoordinates(
this.layout, this.flatCoordinates.slice(), this.ends_.slice());
return polygon;
};
/**
* @inheritDoc
*/
ol.geom.Polygon.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
if (minSquaredDistance <
ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
return minSquaredDistance;
}
if (this.maxDeltaRevision_ != this.getRevision()) {
this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getsMaxSquaredDelta(
this.flatCoordinates, 0, this.ends_, this.stride, 0));
this.maxDeltaRevision_ = this.getRevision();
}
return ol.geom.flat.closest.getsClosestPoint(
this.flatCoordinates, 0, this.ends_, this.stride,
this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);
};
/**
* @inheritDoc
*/
ol.geom.Polygon.prototype.containsXY = function(x, y) {
return ol.geom.flat.contains.linearRingsContainsXY(
this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, x, y);
};
/**
* Return the area of the polygon on projected plane.
* @return {number} Area (on projected plane).
* @api
*/
ol.geom.Polygon.prototype.getArea = function() {
return ol.geom.flat.area.linearRings(
this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride);
};
/**
* Get the coordinate array for this geometry. This array has the structure
* of a GeoJSON coordinate array for polygons.
*
* @param {boolean=} opt_right Orient coordinates according to the right-hand
* rule (counter-clockwise for exterior and clockwise for interior rings).
* If `false`, coordinates will be oriented according to the left-hand rule
* (clockwise for exterior and counter-clockwise for interior rings).
* By default, coordinate orientation will depend on how the geometry was
* constructed.
* @return {Array.<Array.<ol.Coordinate>>} Coordinates.
* @override
* @api
*/
ol.geom.Polygon.prototype.getCoordinates = function(opt_right) {
var flatCoordinates;
if (opt_right !== undefined) {
flatCoordinates = this.getOrientedFlatCoordinates().slice();
ol.geom.flat.orient.orientLinearRings(
flatCoordinates, 0, this.ends_, this.stride, opt_right);
} else {
flatCoordinates = this.flatCoordinates;
}
return ol.geom.flat.inflate.coordinatess(
flatCoordinates, 0, this.ends_, this.stride);
};
/**
* @return {Array.<number>} Ends.
*/
ol.geom.Polygon.prototype.getEnds = function() {
return this.ends_;
};
/**
* @return {Array.<number>} Interior point.
*/
ol.geom.Polygon.prototype.getFlatInteriorPoint = function() {
if (this.flatInteriorPointRevision_ != this.getRevision()) {
var flatCenter = ol.extent.getCenter(this.getExtent());
this.flatInteriorPoint_ = ol.geom.flat.interiorpoint.linearRings(
this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride,
flatCenter, 0);
this.flatInteriorPointRevision_ = this.getRevision();
}
return this.flatInteriorPoint_;
};
/**
* Return an interior point of the polygon.
* @return {ol.geom.Point} Interior point as XYM coordinate, where M is the
* length of the horizontal intersection that the point belongs to.
* @api
*/
ol.geom.Polygon.prototype.getInteriorPoint = function() {
return new ol.geom.Point(this.getFlatInteriorPoint(), ol.geom.GeometryLayout.XYM);
};
/**
* Return the number of rings of the polygon, this includes the exterior
* ring and any interior rings.
*
* @return {number} Number of rings.
* @api
*/
ol.geom.Polygon.prototype.getLinearRingCount = function() {
return this.ends_.length;
};
/**
* Return the Nth linear ring of the polygon geometry. Return `null` if the
* given index is out of range.
* The exterior linear ring is available at index `0` and the interior rings
* at index `1` and beyond.
*
* @param {number} index Index.
* @return {ol.geom.LinearRing} Linear ring.
* @api
*/
ol.geom.Polygon.prototype.getLinearRing = function(index) {
if (index < 0 || this.ends_.length <= index) {
return null;
}
var linearRing = new ol.geom.LinearRing(null);
linearRing.setFlatCoordinates(this.layout, this.flatCoordinates.slice(
index === 0 ? 0 : this.ends_[index - 1], this.ends_[index]));
return linearRing;
};
/**
* Return the linear rings of the polygon.
* @return {Array.<ol.geom.LinearRing>} Linear rings.
* @api
*/
ol.geom.Polygon.prototype.getLinearRings = function() {
var layout = this.layout;
var flatCoordinates = this.flatCoordinates;
var ends = this.ends_;
var linearRings = [];
var offset = 0;
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
var linearRing = new ol.geom.LinearRing(null);
linearRing.setFlatCoordinates(layout, flatCoordinates.slice(offset, end));
linearRings.push(linearRing);
offset = end;
}
return linearRings;
};
/**
* @return {Array.<number>} Oriented flat coordinates.
*/
ol.geom.Polygon.prototype.getOrientedFlatCoordinates = function() {
if (this.orientedRevision_ != this.getRevision()) {
var flatCoordinates = this.flatCoordinates;
if (ol.geom.flat.orient.linearRingsAreOriented(
flatCoordinates, 0, this.ends_, this.stride)) {
this.orientedFlatCoordinates_ = flatCoordinates;
} else {
this.orientedFlatCoordinates_ = flatCoordinates.slice();
this.orientedFlatCoordinates_.length =
ol.geom.flat.orient.orientLinearRings(
this.orientedFlatCoordinates_, 0, this.ends_, this.stride);
}
this.orientedRevision_ = this.getRevision();
}
return this.orientedFlatCoordinates_;
};
/**
* @inheritDoc
*/
ol.geom.Polygon.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
var simplifiedFlatCoordinates = [];
var simplifiedEnds = [];
simplifiedFlatCoordinates.length = ol.geom.flat.simplify.quantizes(
this.flatCoordinates, 0, this.ends_, this.stride,
Math.sqrt(squaredTolerance),
simplifiedFlatCoordinates, 0, simplifiedEnds);
var simplifiedPolygon = new ol.geom.Polygon(null);
simplifiedPolygon.setFlatCoordinates(
ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEnds);
return simplifiedPolygon;
};
/**
* @inheritDoc
* @api
*/
ol.geom.Polygon.prototype.getType = function() {
return ol.geom.GeometryType.POLYGON;
};
/**
* @inheritDoc
* @api
*/
ol.geom.Polygon.prototype.intersectsExtent = function(extent) {
return ol.geom.flat.intersectsextent.linearRings(
this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, extent);
};
/**
* Set the coordinates of the polygon.
* @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @override
* @api
*/
ol.geom.Polygon.prototype.setCoordinates = function(coordinates, opt_layout) {
if (!coordinates) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.ends_);
} else {
this.setLayout(opt_layout, coordinates, 2);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
var ends = ol.geom.flat.deflate.coordinatess(
this.flatCoordinates, 0, coordinates, this.stride, this.ends_);
this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];
//this.changed();
}
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {Array.<number>} ends Ends.
*/
ol.geom.Polygon.prototype.setFlatCoordinates = function(layout, flatCoordinates, ends) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.ends_ = ends;
//this.changed();
};
/**
* Create an approximation of a circle on the surface of a sphere.
* @param {ol.Sphere} sphere The sphere.
* @param {ol.Coordinate} center Center (`[lon, lat]` in degrees).
* @param {number} radius The great-circle distance from the center to
* the polygon vertices.
* @param {number=} opt_n Optional number of vertices for the resulting
* polygon. Default is `32`.
* @return {ol.geom.Polygon} The "circular" polygon.
* @api
*/
ol.geom.Polygon.circular = function(sphere, center, radius, opt_n) {
var n = opt_n ? opt_n : 32;
/** @type {Array.<number>} */
var flatCoordinates = [];
var i;
for (i = 0; i < n; ++i) {
ol.array.extend(
flatCoordinates, sphere.offset(center, radius, 2 * Math.PI * i / n));
}
flatCoordinates.push(flatCoordinates[0], flatCoordinates[1]);
var polygon = new ol.geom.Polygon(null);
polygon.setFlatCoordinates(
ol.geom.GeometryLayout.XY, flatCoordinates, [flatCoordinates.length]);
return polygon;
};
/**
* Create a polygon from an extent. The layout used is `XY`.
* @param {ol.Extent} extent The extent.
* @return {ol.geom.Polygon} The polygon.
* @api
*/
ol.geom.Polygon.fromExtent = function(extent) {
var minX = extent[0];
var minY = extent[1];
var maxX = extent[2];
var maxY = extent[3];
var flatCoordinates =
[minX, minY, minX, maxY, maxX, maxY, maxX, minY, minX, minY];
var polygon = new ol.geom.Polygon(null);
polygon.setFlatCoordinates(
ol.geom.GeometryLayout.XY, flatCoordinates, [flatCoordinates.length]);
return polygon;
};
/**
* Create a regular polygon from a circle.
* @param {ol.geom.Circle} circle Circle geometry.
* @param {number=} opt_sides Number of sides of the polygon. Default is 32.
* @param {number=} opt_angle Start angle for the first vertex of the polygon in
* radians. Default is 0.
* @return {ol.geom.Polygon} Polygon geometry.
* @api
*/
ol.geom.Polygon.fromCircle = function(circle, opt_sides, opt_angle) {
var sides = opt_sides ? opt_sides : 32;
var stride = circle.getStride();
var layout = circle.getLayout();
var polygon = new ol.geom.Polygon(null, layout);
var arrayLength = stride * (sides + 1);
var flatCoordinates = new Array(arrayLength);
for (var i = 0; i < arrayLength; i++) {
flatCoordinates[i] = 0;
}
var ends = [flatCoordinates.length];
polygon.setFlatCoordinates(layout, flatCoordinates, ends);
ol.geom.Polygon.makeRegular(
polygon, circle.getCenter(), circle.getRadius(), opt_angle);
return polygon;
};
/**
* Modify the coordinates of a polygon to make it a regular polygon.
* @param {ol.geom.Polygon} polygon Polygon geometry.
* @param {ol.Coordinate} center Center of the regular polygon.
* @param {number} radius Radius of the regular polygon.
* @param {number=} opt_angle Start angle for the first vertex of the polygon in
* radians. Default is 0.
*/
ol.geom.Polygon.makeRegular = function(polygon, center, radius, opt_angle) {
var flatCoordinates = polygon.getFlatCoordinates();
var layout = polygon.getLayout();
var stride = polygon.getStride();
var ends = polygon.getEnds();
var sides = flatCoordinates.length / stride - 1;
var startAngle = opt_angle ? opt_angle : 0;
var angle, offset;
for (var i = 0; i <= sides; ++i) {
offset = i * stride;
angle = startAngle + (ol.math.modulo(i, sides) * 2 * Math.PI / sides);
flatCoordinates[offset] = center[0] + (radius * Math.cos(angle));
flatCoordinates[offset + 1] = center[1] + (radius * Math.sin(angle));
}
polygon.setFlatCoordinates(layout, flatCoordinates, ends);
};
/**
* @classdesc
* Linestring geometry.
*
* @constructor
* @extends {ol.geom.SimpleGeometry}
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @api
*/
ol.geom.LineString = function(coordinates, opt_layout) {
ol.geom.SimpleGeometry.call(this);
/**
* @private
* @type {ol.Coordinate}
*/
this.flatMidpoint_ = null;
/**
* @private
* @type {number}
*/
this.flatMidpointRevision_ = -1;
/**
* @private
* @type {number}
*/
this.maxDelta_ = -1;
/**
* @private
* @type {number}
*/
this.maxDeltaRevision_ = -1;
this.setCoordinates(coordinates, opt_layout);
};
ol.inherits(ol.geom.LineString, ol.geom.SimpleGeometry);
/**
* Append the passed coordinate to the coordinates of the linestring.
* @param {ol.Coordinate} coordinate Coordinate.
* @api
*/
ol.geom.LineString.prototype.appendCoordinate = function(coordinate) {
if (!this.flatCoordinates) {
this.flatCoordinates = coordinate.slice();
} else {
ol.array.extend(this.flatCoordinates, coordinate);
}
this.changed();
};
/**
* Make a complete copy of the geometry.
* @return {!ol.geom.LineString} Clone.
* @override
* @api
*/
ol.geom.LineString.prototype.clone = function() {
var lineString = new ol.geom.LineString(null);
lineString.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
return lineString;
};
/**
* @inheritDoc
*/
ol.geom.LineString.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
if (minSquaredDistance <
ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
return minSquaredDistance;
}
if (this.maxDeltaRevision_ != this.getRevision()) {
this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getMaxSquaredDelta(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, 0));
this.maxDeltaRevision_ = this.getRevision();
}
return ol.geom.flat.closest.getClosestPoint(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
this.maxDelta_, false, x, y, closestPoint, minSquaredDistance);
};
/**
* Iterate over each segment, calling the provided callback.
* If the callback returns a truthy value the function returns that
* value immediately. Otherwise the function returns `false`.
*
* @param {function(this: S, ol.Coordinate, ol.Coordinate): T} callback Function
* called for each segment.
* @param {S=} opt_this The object to be used as the value of 'this'
* within callback.
* @return {T|boolean} Value.
* @template T,S
* @api
*/
ol.geom.LineString.prototype.forEachSegment = function(callback, opt_this) {
return ol.geom.flat.segments.forEach(this.flatCoordinates, 0,
this.flatCoordinates.length, this.stride, callback, opt_this);
};
/**
* Returns the coordinate at `m` using linear interpolation, or `null` if no
* such coordinate exists.
*
* `opt_extrapolate` controls extrapolation beyond the range of Ms in the
* MultiLineString. If `opt_extrapolate` is `true` then Ms less than the first
* M will return the first coordinate and Ms greater than the last M will
* return the last coordinate.
*
* @param {number} m M.
* @param {boolean=} opt_extrapolate Extrapolate. Default is `false`.
* @return {ol.Coordinate} Coordinate.
* @api
*/
ol.geom.LineString.prototype.getCoordinateAtM = function(m, opt_extrapolate) {
if (this.layout != ol.geom.GeometryLayout.XYM &&
this.layout != ol.geom.GeometryLayout.XYZM) {
return null;
}
var extrapolate = opt_extrapolate !== undefined ? opt_extrapolate : false;
return ol.geom.flat.interpolate.lineStringCoordinateAtM(this.flatCoordinates, 0,
this.flatCoordinates.length, this.stride, m, extrapolate);
};
/**
* Return the coordinates of the linestring.
* @return {Array.<ol.Coordinate>} Coordinates.
* @override
* @api
*/
ol.geom.LineString.prototype.getCoordinates = function() {
return ol.geom.flat.inflate.coordinates(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
};
/**
* Return the coordinate at the provided fraction along the linestring.
* The `fraction` is a number between 0 and 1, where 0 is the start of the
* linestring and 1 is the end.
* @param {number} fraction Fraction.
* @param {ol.Coordinate=} opt_dest Optional coordinate whose values will
* be modified. If not provided, a new coordinate will be returned.
* @return {ol.Coordinate} Coordinate of the interpolated point.
* @api
*/
ol.geom.LineString.prototype.getCoordinateAt = function(fraction, opt_dest) {
return ol.geom.flat.interpolate.lineString(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
fraction, opt_dest);
};
/**
* Return the length of the linestring on projected plane.
* @return {number} Length (on projected plane).
* @api
*/
ol.geom.LineString.prototype.getLength = function() {
return ol.geom.flat.length.lineString(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
};
/**
* @return {Array.<number>} Flat midpoint.
*/
ol.geom.LineString.prototype.getFlatMidpoint = function() {
if (this.flatMidpointRevision_ != this.getRevision()) {
this.flatMidpoint_ = this.getCoordinateAt(0.5, this.flatMidpoint_);
this.flatMidpointRevision_ = this.getRevision();
}
return this.flatMidpoint_;
};
/**
* @inheritDoc
*/
ol.geom.LineString.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
var simplifiedFlatCoordinates = [];
simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeucker(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
squaredTolerance, simplifiedFlatCoordinates, 0);
var simplifiedLineString = new ol.geom.LineString(null);
simplifiedLineString.setFlatCoordinates(
ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates);
return simplifiedLineString;
};
/**
* @inheritDoc
* @api
*/
ol.geom.LineString.prototype.getType = function() {
return ol.geom.GeometryType.LINE_STRING;
};
/**
* @inheritDoc
* @api
*/
ol.geom.LineString.prototype.intersectsExtent = function(extent) {
return ol.geom.flat.intersectsextent.lineString(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
extent);
};
/**
* Set the coordinates of the linestring.
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @override
* @api
*/
ol.geom.LineString.prototype.setCoordinates = function(coordinates, opt_layout) {
if (!coordinates) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
} else {
this.setLayout(opt_layout, coordinates, 1);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
this.flatCoordinates.length = ol.geom.flat.deflate.coordinates(
this.flatCoordinates, 0, coordinates, this.stride);
this.changed();
}
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
*/
ol.geom.LineString.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.changed();
};
ol.geom.Point = function(coordinates, opt_layout) {
ol.geom.SimpleGeometry.call(this);
this.setCoordinates(coordinates, opt_layout);
};
ol.inherits(ol.geom.Point, ol.geom.SimpleGeometry);
ol.geom.Point.prototype.clone = function() {
var point = new ol.geom.Point(null);
point.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
return point;
};
/**
* @inheritDoc
*/
ol.geom.Point.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
var flatCoordinates = this.flatCoordinates;
var squaredDistance = ol.math.squaredDistance(
x, y, flatCoordinates[0], flatCoordinates[1]);
if (squaredDistance < minSquaredDistance) {
var stride = this.stride;
var i;
for (i = 0; i < stride; ++i) {
closestPoint[i] = flatCoordinates[i];
}
closestPoint.length = stride;
return squaredDistance;
} else {
return minSquaredDistance;
}
};
ol.geom.Point.prototype.getCoordinates = function() {
return !this.flatCoordinates ? [] : this.flatCoordinates.slice();
};
ol.geom.Point.prototype.computeExtent = function(extent) {
return ol.extent.createOrUpdateFromCoordinate(this.flatCoordinates, extent);
};
ol.geom.Point.prototype.getType = function() {
return ol.geom.GeometryType.POINT;
};
ol.geom.Point.prototype.intersectsExtent = function(extent) {
return ol.extent.containsXY(extent,
this.flatCoordinates[0], this.flatCoordinates[1]);
};
ol.geom.Point.prototype.setCoordinates = function(coordinates, opt_layout) {
if (!coordinates) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
} else {
this.setLayout(opt_layout, coordinates, 0);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
this.flatCoordinates.length = ol.geom.flat.deflate.coordinate(
this.flatCoordinates, 0, coordinates, this.stride);
this.changed();
}
};
ol.geom.Point.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.changed();
};
/**
* @classdesc
* Multi-linestring geometry.
*
* @constructor
* @extends {ol.geom.SimpleGeometry}
* @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @api
*/
ol.geom.MultiLineString = function(coordinates, opt_layout) {
ol.geom.SimpleGeometry.call(this);
/**
* @type {Array.<number>}
* @private
*/
this.ends_ = [];
/**
* @private
* @type {number}
*/
this.maxDelta_ = -1;
/**
* @private
* @type {number}
*/
this.maxDeltaRevision_ = -1;
this.setCoordinates(coordinates, opt_layout);
};
ol.inherits(ol.geom.MultiLineString, ol.geom.SimpleGeometry);
/**
* Append the passed linestring to the multilinestring.
* @param {ol.geom.LineString} lineString LineString.
* @api
*/
ol.geom.MultiLineString.prototype.appendLineString = function(lineString) {
if (!this.flatCoordinates) {
this.flatCoordinates = lineString.getFlatCoordinates().slice();
} else {
ol.array.extend(
this.flatCoordinates, lineString.getFlatCoordinates().slice());
}
this.ends_.push(this.flatCoordinates.length);
this.changed();
};
/**
* Make a complete copy of the geometry.
* @return {!ol.geom.MultiLineString} Clone.
* @override
* @api
*/
ol.geom.MultiLineString.prototype.clone = function() {
var multiLineString = new ol.geom.MultiLineString(null);
multiLineString.setFlatCoordinates(
this.layout, this.flatCoordinates.slice(), this.ends_.slice());
return multiLineString;
};
/**
* @inheritDoc
*/
ol.geom.MultiLineString.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
if (minSquaredDistance <
ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
return minSquaredDistance;
}
if (this.maxDeltaRevision_ != this.getRevision()) {
this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getsMaxSquaredDelta(
this.flatCoordinates, 0, this.ends_, this.stride, 0));
this.maxDeltaRevision_ = this.getRevision();
}
return ol.geom.flat.closest.getsClosestPoint(
this.flatCoordinates, 0, this.ends_, this.stride,
this.maxDelta_, false, x, y, closestPoint, minSquaredDistance);
};
/**
* Returns the coordinate at `m` using linear interpolation, or `null` if no
* such coordinate exists.
*
* `opt_extrapolate` controls extrapolation beyond the range of Ms in the
* MultiLineString. If `opt_extrapolate` is `true` then Ms less than the first
* M will return the first coordinate and Ms greater than the last M will
* return the last coordinate.
*
* `opt_interpolate` controls interpolation between consecutive LineStrings
* within the MultiLineString. If `opt_interpolate` is `true` the coordinates
* will be linearly interpolated between the last coordinate of one LineString
* and the first coordinate of the next LineString. If `opt_interpolate` is
* `false` then the function will return `null` for Ms falling between
* LineStrings.
*
* @param {number} m M.
* @param {boolean=} opt_extrapolate Extrapolate. Default is `false`.
* @param {boolean=} opt_interpolate Interpolate. Default is `false`.
* @return {ol.Coordinate} Coordinate.
* @api
*/
ol.geom.MultiLineString.prototype.getCoordinateAtM = function(m, opt_extrapolate, opt_interpolate) {
if ((this.layout != ol.geom.GeometryLayout.XYM &&
this.layout != ol.geom.GeometryLayout.XYZM) ||
this.flatCoordinates.length === 0) {
return null;
}
var extrapolate = opt_extrapolate !== undefined ? opt_extrapolate : false;
var interpolate = opt_interpolate !== undefined ? opt_interpolate : false;
return ol.geom.flat.interpolate.lineStringsCoordinateAtM(this.flatCoordinates, 0,
this.ends_, this.stride, m, extrapolate, interpolate);
};
/**
* Return the coordinates of the multilinestring.
* @return {Array.<Array.<ol.Coordinate>>} Coordinates.
* @override
* @api
*/
ol.geom.MultiLineString.prototype.getCoordinates = function() {
return ol.geom.flat.inflate.coordinatess(
this.flatCoordinates, 0, this.ends_, this.stride);
};
/**
* @return {Array.<number>} Ends.
*/
ol.geom.MultiLineString.prototype.getEnds = function() {
return this.ends_;
};
/**
* Return the linestring at the specified index.
* @param {number} index Index.
* @return {ol.geom.LineString} LineString.
* @api
*/
ol.geom.MultiLineString.prototype.getLineString = function(index) {
if (index < 0 || this.ends_.length <= index) {
return null;
}
var lineString = new ol.geom.LineString(null);
lineString.setFlatCoordinates(this.layout, this.flatCoordinates.slice(
index === 0 ? 0 : this.ends_[index - 1], this.ends_[index]));
return lineString;
};
/**
* Return the linestrings of this multilinestring.
* @return {Array.<ol.geom.LineString>} LineStrings.
* @api
*/
ol.geom.MultiLineString.prototype.getLineStrings = function() {
var flatCoordinates = this.flatCoordinates;
var ends = this.ends_;
var layout = this.layout;
/** @type {Array.<ol.geom.LineString>} */
var lineStrings = [];
var offset = 0;
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
var lineString = new ol.geom.LineString(null);
lineString.setFlatCoordinates(layout, flatCoordinates.slice(offset, end));
lineStrings.push(lineString);
offset = end;
}
return lineStrings;
};
/**
* @return {Array.<number>} Flat midpoints.
*/
ol.geom.MultiLineString.prototype.getFlatMidpoints = function() {
var midpoints = [];
var flatCoordinates = this.flatCoordinates;
var offset = 0;
var ends = this.ends_;
var stride = this.stride;
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
var midpoint = ol.geom.flat.interpolate.lineString(
flatCoordinates, offset, end, stride, 0.5);
ol.array.extend(midpoints, midpoint);
offset = end;
}
return midpoints;
};
/**
* @inheritDoc
*/
ol.geom.MultiLineString.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
var simplifiedFlatCoordinates = [];
var simplifiedEnds = [];
simplifiedFlatCoordinates.length = ol.geom.flat.simplify.douglasPeuckers(
this.flatCoordinates, 0, this.ends_, this.stride, squaredTolerance,
simplifiedFlatCoordinates, 0, simplifiedEnds);
var simplifiedMultiLineString = new ol.geom.MultiLineString(null);
simplifiedMultiLineString.setFlatCoordinates(
ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEnds);
return simplifiedMultiLineString;
};
/**
* @inheritDoc
* @api
*/
ol.geom.MultiLineString.prototype.getType = function() {
return ol.geom.GeometryType.MULTI_LINE_STRING;
};
/**
* @inheritDoc
* @api
*/
ol.geom.MultiLineString.prototype.intersectsExtent = function(extent) {
return ol.geom.flat.intersectsextent.lineStrings(
this.flatCoordinates, 0, this.ends_, this.stride, extent);
};
/**
* Set the coordinates of the multilinestring.
* @param {Array.<Array.<ol.Coordinate>>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @override
* @api
*/
ol.geom.MultiLineString.prototype.setCoordinates = function(coordinates, opt_layout) {
if (!coordinates) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.ends_);
} else {
this.setLayout(opt_layout, coordinates, 2);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
var ends = ol.geom.flat.deflate.coordinatess(
this.flatCoordinates, 0, coordinates, this.stride, this.ends_);
this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];
this.changed();
}
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {Array.<number>} ends Ends.
*/
ol.geom.MultiLineString.prototype.setFlatCoordinates = function(layout, flatCoordinates, ends) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.ends_ = ends;
this.changed();
};
/**
* @param {Array.<ol.geom.LineString>} lineStrings LineStrings.
*/
ol.geom.MultiLineString.prototype.setLineStrings = function(lineStrings) {
var layout = this.getLayout();
var flatCoordinates = [];
var ends = [];
var i, ii;
for (i = 0, ii = lineStrings.length; i < ii; ++i) {
var lineString = lineStrings[i];
if (i === 0) {
layout = lineString.getLayout();
}
ol.array.extend(flatCoordinates, lineString.getFlatCoordinates());
ends.push(flatCoordinates.length);
}
this.setFlatCoordinates(layout, flatCoordinates, ends);
};
/**
* @classdesc
* Multi-point geometry.
*
* @constructor
* @extends {ol.geom.SimpleGeometry}
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @api
*/
ol.geom.MultiPoint = function(coordinates, opt_layout) {
ol.geom.SimpleGeometry.call(this);
this.setCoordinates(coordinates, opt_layout);
};
ol.inherits(ol.geom.MultiPoint, ol.geom.SimpleGeometry);
/**
* Append the passed point to this multipoint.
* @param {ol.geom.Point} point Point.
* @api
*/
ol.geom.MultiPoint.prototype.appendPoint = function(point) {
if (!this.flatCoordinates) {
this.flatCoordinates = point.getFlatCoordinates().slice();
} else {
ol.array.extend(this.flatCoordinates, point.getFlatCoordinates());
}
this.changed();
};
/**
* Make a complete copy of the geometry.
* @return {!ol.geom.MultiPoint} Clone.
* @override
* @api
*/
ol.geom.MultiPoint.prototype.clone = function() {
var multiPoint = new ol.geom.MultiPoint(null);
multiPoint.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
return multiPoint;
};
/**
* @inheritDoc
*/
ol.geom.MultiPoint.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
if (minSquaredDistance <
ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
return minSquaredDistance;
}
var flatCoordinates = this.flatCoordinates;
var stride = this.stride;
var i, ii, j;
for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
var squaredDistance = ol.math.squaredDistance(
x, y, flatCoordinates[i], flatCoordinates[i + 1]);
if (squaredDistance < minSquaredDistance) {
minSquaredDistance = squaredDistance;
for (j = 0; j < stride; ++j) {
closestPoint[j] = flatCoordinates[i + j];
}
closestPoint.length = stride;
}
}
return minSquaredDistance;
};
/**
* Return the coordinates of the multipoint.
* @return {Array.<ol.Coordinate>} Coordinates.
* @override
* @api
*/
ol.geom.MultiPoint.prototype.getCoordinates = function() {
return ol.geom.flat.inflate.coordinates(
this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
};
/**
* Return the point at the specified index.
* @param {number} index Index.
* @return {ol.geom.Point} Point.
* @api
*/
ol.geom.MultiPoint.prototype.getPoint = function(index) {
var n = !this.flatCoordinates ?
0 : this.flatCoordinates.length / this.stride;
if (index < 0 || n <= index) {
return null;
}
var point = new ol.geom.Point(null);
point.setFlatCoordinates(this.layout, this.flatCoordinates.slice(
index * this.stride, (index + 1) * this.stride));
return point;
};
/**
* Return the points of this multipoint.
* @return {Array.<ol.geom.Point>} Points.
* @api
*/
ol.geom.MultiPoint.prototype.getPoints = function() {
var flatCoordinates = this.flatCoordinates;
var layout = this.layout;
var stride = this.stride;
/** @type {Array.<ol.geom.Point>} */
var points = [];
var i, ii;
for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
var point = new ol.geom.Point(null);
point.setFlatCoordinates(layout, flatCoordinates.slice(i, i + stride));
points.push(point);
}
return points;
};
/**
* @inheritDoc
* @api
*/
ol.geom.MultiPoint.prototype.getType = function() {
return ol.geom.GeometryType.MULTI_POINT;
};
/**
* @inheritDoc
* @api
*/
ol.geom.MultiPoint.prototype.intersectsExtent = function(extent) {
var flatCoordinates = this.flatCoordinates;
var stride = this.stride;
var i, ii, x, y;
for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
x = flatCoordinates[i];
y = flatCoordinates[i + 1];
if (ol.extent.containsXY(extent, x, y)) {
return true;
}
}
return false;
};
/**
* Set the coordinates of the multipoint.
* @param {Array.<ol.Coordinate>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @override
* @api
*/
ol.geom.MultiPoint.prototype.setCoordinates = function(coordinates, opt_layout) {
if (!coordinates) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
} else {
this.setLayout(opt_layout, coordinates, 1);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
this.flatCoordinates.length = ol.geom.flat.deflate.coordinates(
this.flatCoordinates, 0, coordinates, this.stride);
this.changed();
}
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
*/
ol.geom.MultiPoint.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.changed();
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<Array.<number>>} endss Endss.
* @param {number} stride Stride.
* @return {Array.<number>} Flat centers.
*/
ol.geom.flat.center.linearRingss = {};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<Array.<number>>} endss Endss.
* @param {number} stride Stride.
* @return {Array.<number>} Flat centers.
*/
ol.geom.flat.center.linearRingss = function(flatCoordinates, offset, endss, stride) {
var flatCenters = [];
var i, ii;
var extent = ol.extent.createEmpty();
for (i = 0, ii = endss.length; i < ii; ++i) {
var ends = endss[i];
extent = ol.extent.createOrUpdateFromFlatCoordinates(
flatCoordinates, offset, ends[0], stride);
flatCenters.push((extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2);
offset = ends[ends.length - 1];
}
return flatCenters;
};
/**
* @classdesc
* Multi-polygon geometry.
*
* @constructor
* @extends {ol.geom.SimpleGeometry}
* @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @api
*/
ol.geom.MultiPolygon = function(coordinates, opt_layout) {
ol.geom.SimpleGeometry.call(this);
/**
* @type {Array.<Array.<number>>}
* @private
*/
this.endss_ = [];
/**
* @private
* @type {number}
*/
this.flatInteriorPointsRevision_ = -1;
/**
* @private
* @type {Array.<number>}
*/
this.flatInteriorPoints_ = null;
/**
* @private
* @type {number}
*/
this.maxDelta_ = -1;
/**
* @private
* @type {number}
*/
this.maxDeltaRevision_ = -1;
/**
* @private
* @type {number}
*/
this.orientedRevision_ = -1;
/**
* @private
* @type {Array.<number>}
*/
this.orientedFlatCoordinates_ = null;
this.setCoordinates(coordinates, opt_layout);
};
ol.inherits(ol.geom.MultiPolygon, ol.geom.SimpleGeometry);
/**
* Append the passed polygon to this multipolygon.
* @param {ol.geom.Polygon} polygon Polygon.
* @api
*/
ol.geom.MultiPolygon.prototype.appendPolygon = function(polygon) {
/** @type {Array.<number>} */
var ends;
if (!this.flatCoordinates) {
this.flatCoordinates = polygon.getFlatCoordinates().slice();
ends = polygon.getEnds().slice();
this.endss_.push();
} else {
var offset = this.flatCoordinates.length;
ol.array.extend(this.flatCoordinates, polygon.getFlatCoordinates());
ends = polygon.getEnds().slice();
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
ends[i] += offset;
}
}
this.endss_.push(ends);
this.changed();
};
/**
* Make a complete copy of the geometry.
* @return {!ol.geom.MultiPolygon} Clone.
* @override
* @api
*/
ol.geom.MultiPolygon.prototype.clone = function() {
var multiPolygon = new ol.geom.MultiPolygon(null);
var len = this.endss_.length;
var newEndss = new Array(len);
for (var i = 0; i < len; ++i) {
newEndss[i] = this.endss_[i].slice();
}
multiPolygon.setFlatCoordinates(
this.layout, this.flatCoordinates.slice(), newEndss);
return multiPolygon;
};
/**
* @inheritDoc
*/
ol.geom.MultiPolygon.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
if (minSquaredDistance <
ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
return minSquaredDistance;
}
if (this.maxDeltaRevision_ != this.getRevision()) {
this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getssMaxSquaredDelta(
this.flatCoordinates, 0, this.endss_, this.stride, 0));
this.maxDeltaRevision_ = this.getRevision();
}
return ol.geom.flat.closest.getssClosestPoint(
this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);
};
/**
* @inheritDoc
*/
ol.geom.MultiPolygon.prototype.containsXY = function(x, y) {
return ol.geom.flat.contains.linearRingssContainsXY(
this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, x, y);
};
/**
* Return the area of the multipolygon on projected plane.
* @return {number} Area (on projected plane).
* @api
*/
ol.geom.MultiPolygon.prototype.getArea = function() {
return ol.geom.flat.area.linearRingss(
this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride);
};
/**
* Get the coordinate array for this geometry. This array has the structure
* of a GeoJSON coordinate array for multi-polygons.
*
* @param {boolean=} opt_right Orient coordinates according to the right-hand
* rule (counter-clockwise for exterior and clockwise for interior rings).
* If `false`, coordinates will be oriented according to the left-hand rule
* (clockwise for exterior and counter-clockwise for interior rings).
* By default, coordinate orientation will depend on how the geometry was
* constructed.
* @return {Array.<Array.<Array.<ol.Coordinate>>>} Coordinates.
* @override
* @api
*/
ol.geom.MultiPolygon.prototype.getCoordinates = function(opt_right) {
var flatCoordinates;
if (opt_right !== undefined) {
flatCoordinates = this.getOrientedFlatCoordinates().slice();
ol.geom.flat.orient.orientLinearRingss(
flatCoordinates, 0, this.endss_, this.stride, opt_right);
} else {
flatCoordinates = this.flatCoordinates;
}
return ol.geom.flat.inflate.coordinatesss(
flatCoordinates, 0, this.endss_, this.stride);
};
/**
* @return {Array.<Array.<number>>} Endss.
*/
ol.geom.MultiPolygon.prototype.getEndss = function() {
return this.endss_;
};
/**
* @return {Array.<number>} Flat interior points.
*/
ol.geom.MultiPolygon.prototype.getFlatInteriorPoints = function() {
if (this.flatInteriorPointsRevision_ != this.getRevision()) {
var flatCenters = ol.geom.flat.center.linearRingss(
this.flatCoordinates, 0, this.endss_, this.stride);
this.flatInteriorPoints_ = ol.geom.flat.interiorpoint.linearRingss(
this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
flatCenters);
this.flatInteriorPointsRevision_ = this.getRevision();
}
return this.flatInteriorPoints_;
};
/**
* Return the interior points as {@link ol.geom.MultiPoint multipoint}.
* @return {ol.geom.MultiPoint} Interior points as XYM coordinates, where M is
* the length of the horizontal intersection that the point belongs to.
* @api
*/
ol.geom.MultiPolygon.prototype.getInteriorPoints = function() {
var interiorPoints = new ol.geom.MultiPoint(null);
interiorPoints.setFlatCoordinates(ol.geom.GeometryLayout.XYM,
this.getFlatInteriorPoints().slice());
return interiorPoints;
};
/**
* @return {Array.<number>} Oriented flat coordinates.
*/
ol.geom.MultiPolygon.prototype.getOrientedFlatCoordinates = function() {
if (this.orientedRevision_ != this.getRevision()) {
var flatCoordinates = this.flatCoordinates;
if (ol.geom.flat.orient.linearRingssAreOriented(
flatCoordinates, 0, this.endss_, this.stride)) {
this.orientedFlatCoordinates_ = flatCoordinates;
} else {
this.orientedFlatCoordinates_ = flatCoordinates.slice();
this.orientedFlatCoordinates_.length =
ol.geom.flat.orient.orientLinearRingss(
this.orientedFlatCoordinates_, 0, this.endss_, this.stride);
}
this.orientedRevision_ = this.getRevision();
}
return this.orientedFlatCoordinates_;
};
/**
* @inheritDoc
*/
ol.geom.MultiPolygon.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
var simplifiedFlatCoordinates = [];
var simplifiedEndss = [];
simplifiedFlatCoordinates.length = ol.geom.flat.simplify.quantizess(
this.flatCoordinates, 0, this.endss_, this.stride,
Math.sqrt(squaredTolerance),
simplifiedFlatCoordinates, 0, simplifiedEndss);
var simplifiedMultiPolygon = new ol.geom.MultiPolygon(null);
simplifiedMultiPolygon.setFlatCoordinates(
ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEndss);
return simplifiedMultiPolygon;
};
/**
* Return the polygon at the specified index.
* @param {number} index Index.
* @return {ol.geom.Polygon} Polygon.
* @api
*/
ol.geom.MultiPolygon.prototype.getPolygon = function(index) {
if (index < 0 || this.endss_.length <= index) {
return null;
}
var offset;
if (index === 0) {
offset = 0;
} else {
var prevEnds = this.endss_[index - 1];
offset = prevEnds[prevEnds.length - 1];
}
var ends = this.endss_[index].slice();
var end = ends[ends.length - 1];
if (offset !== 0) {
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
ends[i] -= offset;
}
}
var polygon = new ol.geom.Polygon(null);
polygon.setFlatCoordinates(
this.layout, this.flatCoordinates.slice(offset, end), ends);
return polygon;
};
/**
* Return the polygons of this multipolygon.
* @return {Array.<ol.geom.Polygon>} Polygons.
* @api
*/
ol.geom.MultiPolygon.prototype.getPolygons = function() {
var layout = this.layout;
var flatCoordinates = this.flatCoordinates;
var endss = this.endss_;
var polygons = [];
var offset = 0;
var i, ii, j, jj;
for (i = 0, ii = endss.length; i < ii; ++i) {
var ends = endss[i].slice();
var end = ends[ends.length - 1];
if (offset !== 0) {
for (j = 0, jj = ends.length; j < jj; ++j) {
ends[j] -= offset;
}
}
var polygon = new ol.geom.Polygon(null);
polygon.setFlatCoordinates(
layout, flatCoordinates.slice(offset, end), ends);
polygons.push(polygon);
offset = end;
}
return polygons;
};
/**
* @inheritDoc
* @api
*/
ol.geom.MultiPolygon.prototype.getType = function() {
return ol.geom.GeometryType.MULTI_POLYGON;
};
/**
* @inheritDoc
* @api
*/
ol.geom.MultiPolygon.prototype.intersectsExtent = function(extent) {
return ol.geom.flat.intersectsextent.linearRingss(
this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, extent);
};
/**
* Set the coordinates of the multipolygon.
* @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinates Coordinates.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @override
* @api
*/
ol.geom.MultiPolygon.prototype.setCoordinates = function(coordinates, opt_layout) {
if (!coordinates) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.endss_);
} else {
this.setLayout(opt_layout, coordinates, 3);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
var endss = ol.geom.flat.deflate.coordinatesss(
this.flatCoordinates, 0, coordinates, this.stride, this.endss_);
if (endss.length === 0) {
this.flatCoordinates.length = 0;
} else {
var lastEnds = endss[endss.length - 1];
this.flatCoordinates.length = lastEnds.length === 0 ?
0 : lastEnds[lastEnds.length - 1];
}
this.changed();
}
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {Array.<Array.<number>>} endss Endss.
*/
ol.geom.MultiPolygon.prototype.setFlatCoordinates = function(layout, flatCoordinates, endss) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.endss_ = endss;
this.changed();
};
/**
* @param {Array.<ol.geom.Polygon>} polygons Polygons.
*/
ol.geom.MultiPolygon.prototype.setPolygons = function(polygons) {
var layout = this.getLayout();
var flatCoordinates = [];
var endss = [];
var i, ii, ends;
for (i = 0, ii = polygons.length; i < ii; ++i) {
var polygon = polygons[i];
if (i === 0) {
layout = polygon.getLayout();
}
var offset = flatCoordinates.length;
ends = polygon.getEnds();
var j, jj;
for (j = 0, jj = ends.length; j < jj; ++j) {
ends[j] += offset;
}
ol.array.extend(flatCoordinates, polygon.getFlatCoordinates());
endss.push(ends);
}
this.setFlatCoordinates(layout, flatCoordinates, endss);
};
ol.Feature = function(opt_geometryOrProperties) {
ol.Object.call(this);
/**
* @private
* @type {number|string|undefined}
*/
this.id_ = undefined;
/**
* @type {string}
* @private
*/
this.geometryName_ = 'geometry';
/**
* User provided style.
* @private
* @type {ol.style.Style|Array.<ol.style.Style>|
* ol.FeatureStyleFunction}
*/
this.style_ = null;
/**
* @private
* @type {ol.FeatureStyleFunction|undefined}
*/
this.styleFunction_ = undefined;
/**
* @private
* @type {?ol.EventsKey}
*/
this.geometryChangeKey_ = null;
// ol.events.listen(
// this, ol.Object.getChangeEventType(this.geometryName_),
// this.handleGeometryChanged_, this);
if (opt_geometryOrProperties !== undefined) {
if (opt_geometryOrProperties instanceof ol.geom.Geometry ||
!opt_geometryOrProperties) {
var geometry = opt_geometryOrProperties;
this.setGeometry(geometry);
} else {
/** @type {Object.<string, *>} */
var properties = opt_geometryOrProperties;
this.setProperties(properties);
}
}
};
ol.inherits(ol.Feature, ol.Object);
/**
* Clone this feature. If the original feature has a geometry it
* is also cloned. The feature id is not set in the clone.
* @return {ol.Feature} The clone.
* @api
*/
ol.Feature.prototype.clone = function() {
var clone = new ol.Feature(this.getProperties());
clone.setGeometryName(this.getGeometryName());
var geometry = this.getGeometry();
if (geometry) {
clone.setGeometry(geometry.clone());
}
var style = this.getStyle();
if (style) {
clone.setStyle(style);
}
return clone;
};
/**
* Get the feature's default geometry. A feature may have any number of named
* geometries. The "default" geometry (the one that is rendered by default) is
* set when calling {@link ol.Feature#setGeometry}.
* @return {ol.geom.Geometry|undefined} The default geometry for the feature.
* @api
* @observable
*/
ol.Feature.prototype.getGeometry = function() {
return /** @type {ol.geom.Geometry|undefined} */ (
this.get(this.geometryName_));
};
/**
* Get the feature identifier. This is a stable identifier for the feature and
* is either set when reading data from a remote source or set explicitly by
* calling {@link ol.Feature#setId}.
* @return {number|string|undefined} Id.
* @api
*/
ol.Feature.prototype.getId = function() {
return this.id_;
};
/**
* Get the name of the feature's default geometry. By default, the default
* geometry is named `geometry`.
* @return {string} Get the property name associated with the default geometry
* for this feature.
* @api
*/
ol.Feature.prototype.getGeometryName = function() {
return this.geometryName_;
};
/**
* Get the feature's style. Will return what was provided to the
* {@link ol.Feature#setStyle} method.
* @return {ol.style.Style|Array.<ol.style.Style>|
* ol.FeatureStyleFunction|ol.StyleFunction} The feature style.
* @api
*/
ol.Feature.prototype.getStyle = function() {
return this.style_;
};
/**
* Get the feature's style function.
* @return {ol.FeatureStyleFunction|undefined} Return a function
* representing the current style of this feature.
* @api
*/
ol.Feature.prototype.getStyleFunction = function() {
return this.styleFunction_;
};
/**
* @private
*/
ol.Feature.prototype.handleGeometryChange_ = function() {
this.changed();
};
/**
* @private
*/
ol.Feature.prototype.handleGeometryChanged_ = function() {
if (this.geometryChangeKey_) {
ol.events.unlistenByKey(this.geometryChangeKey_);
this.geometryChangeKey_ = null;
}
var geometry = this.getGeometry();
if (geometry) {
this.geometryChangeKey_ = ol.events.listen(geometry,
ol.events.EventType.CHANGE, this.handleGeometryChange_, this);
}
this.changed();
};
/**
* Set the default geometry for the feature. This will update the property
* with the name returned by {@link ol.Feature#getGeometryName}.
* @param {ol.geom.Geometry|undefined} geometry The new geometry.
* @api
* @observable
*/
ol.Feature.prototype.setGeometry = function(geometry) {
this.set(this.geometryName_, geometry);
};
/**
* Set the style for the feature. This can be a single style object, an array
* of styles, or a function that takes a resolution and returns an array of
* styles. If it is `null` the feature has no style (a `null` style).
* @param {ol.style.Style|Array.<ol.style.Style>|
* ol.FeatureStyleFunction|ol.StyleFunction} style Style for this feature.
* @api
* @fires ol.events.Event#event:change
*/
ol.Feature.prototype.setStyle = function(style) {
this.style_ = style;
this.styleFunction_ = !style ?
undefined : ol.Feature.createStyleFunction(style);
this.changed();
};
/**
* Set the feature id. The feature id is considered stable and may be used when
* requesting features or comparing identifiers returned from a remote source.
* The feature id can be used with the {@link ol.source.Vector#getFeatureById}
* method.
* @param {number|string|undefined} id The feature id.
* @api
* @fires ol.events.Event#event:change
*/
ol.Feature.prototype.setId = function(id) {
this.id_ = id;
this.changed();
};
/**
* Set the property name to be used when getting the feature's default geometry.
* When calling {@link ol.Feature#getGeometry}, the value of the property with
* this name will be returned.
* @param {string} name The property name of the default geometry.
* @api
*/
ol.Feature.prototype.setGeometryName = function(name) {
ol.events.unlisten(
this, ol.Object.getChangeEventType(this.geometryName_),
this.handleGeometryChanged_, this);
this.geometryName_ = name;
ol.events.listen(
this, ol.Object.getChangeEventType(this.geometryName_),
this.handleGeometryChanged_, this);
this.handleGeometryChanged_();
};
/**
* Convert the provided object into a feature style function. Functions passed
* through unchanged. Arrays of ol.style.Style or single style objects wrapped
* in a new feature style function.
* @param {ol.FeatureStyleFunction|!Array.<ol.style.Style>|!ol.style.Style} obj
* A feature style function, a single style, or an array of styles.
* @return {ol.FeatureStyleFunction} A style function.
*/
ol.Feature.createStyleFunction = function(obj) {
var styleFunction;
if (typeof obj === 'function') {
if (obj.length == 2) {
styleFunction = function(resolution) {
return /** @type {ol.StyleFunction} */ (obj)(this, resolution);
};
} else {
styleFunction = obj;
}
} else {
/**
* @type {Array.<ol.style.Style>}
*/
var styles;
if (Array.isArray(obj)) {
styles = obj;
} else {
ol.asserts.assert(obj instanceof ol.style.Style,
41); // Expected an `ol.style.Style` or an array of `ol.style.Style`
styles = [obj];
}
styleFunction = function() {
return styles;
};
}
return styleFunction;
};
ol.format = {};
ol.format.Feature = function() {
/**
* @protected
* @type {ol.proj.Projection}
*/
this.defaultDataProjection = null;
/**
* @protected
* @type {ol.proj.Projection}
*/
this.defaultFeatureProjection = null;
};
/**
* Adds the data projection to the read options.
* @param {Document|Node|Object|string} source Source.
* @param {olx.format.ReadOptions=} opt_options Options.
* @return {olx.format.ReadOptions|undefined} Options.
* @protected
*/
ol.format.Feature.prototype.getReadOptions = function(source, opt_options) {
var options;
if (opt_options) {
options = {
dataProjection: opt_options.dataProjection ?
opt_options.dataProjection : this.readProjection(source),
featureProjection: opt_options.featureProjection
};
}
return this.adaptOptions(options);
};
/**
* Sets the `defaultDataProjection` on the options, if no `dataProjection`
* is set.
* @param {olx.format.WriteOptions|olx.format.ReadOptions|undefined} options
* Options.
* @protected
* @return {olx.format.WriteOptions|olx.format.ReadOptions|undefined}
* Updated options.
*/
ol.format.Feature.prototype.adaptOptions = function(options) {
return ol.obj.assign({
dataProjection: this.defaultDataProjection,
featureProjection: this.defaultFeatureProjection
}, options);
};
/**
* Get the extent from the source of the last {@link readFeatures} call.
* @return {ol.Extent} Tile extent.
*/
ol.format.Feature.prototype.getLastExtent = function() {
return null;
};
/**
* @abstract
* @return {ol.format.FormatType} Format.
*/
ol.format.Feature.prototype.getType = function() {};
/**
* Read a single feature from a source.
*
* @abstract
* @param {Document|Node|Object|string} source Source.
* @param {olx.format.ReadOptions=} opt_options Read options.
* @return {ol.Feature} Feature.
*/
ol.format.Feature.prototype.readFeature = function(source, opt_options) {};
/**
* Read all features from a source.
*
* @abstract
* @param {Document|Node|ArrayBuffer|Object|string} source Source.
* @param {olx.format.ReadOptions=} opt_options Read options.
* @return {Array.<ol.Feature>} Features.
*/
ol.format.Feature.prototype.readFeatures = function(source, opt_options) {};
/**
* Read a single geometry from a source.
*
* @abstract
* @param {Document|Node|Object|string} source Source.
* @param {olx.format.ReadOptions=} opt_options Read options.
* @return {ol.geom.Geometry} Geometry.
*/
ol.format.Feature.prototype.readGeometry = function(source, opt_options) {};
/**
* Read the projection from a source.
*
* @abstract
* @param {Document|Node|Object|string} source Source.
* @return {ol.proj.Projection} Projection.
*/
ol.format.Feature.prototype.readProjection = function(source) {};
/**
* Encode a feature in this format.
*
* @abstract
* @param {ol.Feature} feature Feature.
* @param {olx.format.WriteOptions=} opt_options Write options.
* @return {string} Result.
*/
ol.format.Feature.prototype.writeFeature = function(feature, opt_options) {};
/**
* Encode an array of features in this format.
*
* @abstract
* @param {Array.<ol.Feature>} features Features.
* @param {olx.format.WriteOptions=} opt_options Write options.
* @return {string} Result.
*/
ol.format.Feature.prototype.writeFeatures = function(features, opt_options) {};
/**
* Write a single geometry in this format.
*
* @abstract
* @param {ol.geom.Geometry} geometry Geometry.
* @param {olx.format.WriteOptions=} opt_options Write options.
* @return {string} Result.
*/
ol.format.Feature.prototype.writeGeometry = function(geometry, opt_options) {};
/**
* @param {ol.geom.Geometry|ol.Extent} geometry Geometry.
* @param {boolean} write Set to true for writing, false for reading.
* @param {(olx.format.WriteOptions|olx.format.ReadOptions)=} opt_options
* Options.
* @return {ol.geom.Geometry|ol.Extent} Transformed geometry.
* @protected
*/
ol.format.Feature.transformWithOptions = function(
geometry, write, opt_options) {
/**
* @type {ol.geom.Geometry|ol.Extent}
*/
var transformed;
{
transformed = geometry;
}
if (write && opt_options && opt_options.decimals !== undefined) {
var power = Math.pow(10, opt_options.decimals);
// if decimals option on write, round each coordinate appropriately
/**
* @param {Array.<number>} coordinates Coordinates.
* @return {Array.<number>} Transformed coordinates.
*/
var transform = function(coordinates) {
for (var i = 0, ii = coordinates.length; i < ii; ++i) {
coordinates[i] = Math.round(coordinates[i] * power) / power;
}
return coordinates;
};
if (transformed === geometry) {
transformed = transformed.clone();
}
transformed.applyTransform(transform);
}
return transformed;
};
ol.format.MVT = function(opt_options) {
ol.format.Feature.call(this);
var options = opt_options ? opt_options : {};
/**
* @type {ol.proj.Projection}
*/
// this.defaultDataProjection = new ol.proj.Projection({
// code: 'EPSG:3857',
// units: ol.proj.Units.TILE_PIXELS
// });
/**
* @private
* @type {function((ol.geom.Geometry|Object.<string,*>)=)|
* function(ol.geom.GeometryType,Array.<number>,
* (Array.<number>|Array.<Array.<number>>),Object.<string,*>,number)}
*/
this.featureClass_ = options.featureClass ?
options.featureClass : ol.render.Feature;
/**
* @private
* @type {string|undefined}
*/
this.geometryName_ = options.geometryName;
/**
* @private
* @type {string}
*/
this.layerName_ = options.layerName ? options.layerName : 'layer';
/**
* @private
* @type {Array.<string>}
*/
this.layers_ = options.layers ? options.layers : null;
/**
* @private
* @type {ol.Extent}
*/
this.extent_ = null;
};
ol.inherits(ol.format.MVT, ol.format.Feature);
ol.format.MVT.pbfReaders_ = {
layers: function (tag, layers, pbf) {
if (tag === 3) {
var layer = {
keys: [],
values: [],
features: []
};
var end = pbf.readVarint() + pbf.pos;
pbf.readFields(ol.format.MVT.pbfReaders_.layer, layer, end);
layer.length = layer.features.length;
if (layer.length) {
layers[layer.name] = layer;
}
}
},
layer: function (tag, layer, pbf) {
if (tag === 15) {
layer.version = pbf.readVarint();
} else if (tag === 1) {
layer.name = pbf.readString();
} else if (tag === 5) {
layer.extent = pbf.readVarint();
} else if (tag === 2) {
layer.features.push(pbf.pos);
} else if (tag === 3) {
layer.keys.push(pbf.readString());
} else if (tag === 4) {
var value = null;
var end = pbf.readVarint() + pbf.pos;
while (pbf.pos < end) {
tag = pbf.readVarint() >> 3;
value = tag === 1 ? pbf.readString() :
tag === 2 ? pbf.readFloat() :
tag === 3 ? pbf.readDouble() :
tag === 4 ? pbf.readVarint64() :
tag === 5 ? pbf.readVarint() :
tag === 6 ? pbf.readSVarint() :
tag === 7 ? pbf.readBoolean() : null;
}
layer.values.push(value);
}
},
feature: function (tag, feature, pbf) {
if (tag == 1) {
feature.id = pbf.readVarint();
} else if (tag == 2) {
var end = pbf.readVarint() + pbf.pos;
while (pbf.pos < end) {
var key = feature.layer.keys[pbf.readVarint()];
var value = feature.layer.values[pbf.readVarint()];
feature.properties[key] = value;
}
} else if (tag == 3) {
feature.type = pbf.readVarint();
} else if (tag == 4) {
feature.geometry = pbf.pos;
}
}
};
/**
* Read a raw feature from the pbf offset stored at index `i` in the raw layer.
* @suppress {missingProperties}
* @private
* @param {ol.ext.PBF} pbf PBF.
* @param {Object} layer Raw layer.
* @param {number} i Index of the feature in the raw layer's `features` array.
* @return {Object} Raw feature.
*/
ol.format.MVT.readRawFeature_ = function (pbf, layer, i) {
pbf.pos = layer.features[i];
var end = pbf.readVarint() + pbf.pos;
var feature = {
layer: layer,
type: 0,
properties: {}
};
pbf.readFields(ol.format.MVT.pbfReaders_.feature, feature, end);
return feature;
};
/**
* Read the raw geometry from the pbf offset stored in a raw feature's geometry
* proeprty.
* @suppress {missingProperties}
* @private
* @param {ol.ext.PBF} pbf PBF.
* @param {Object} feature Raw feature.
* @param {Array.<number>} flatCoordinates Array to store flat coordinates in.
* @param {Array.<number>} ends Array to store ends in.
*/
ol.format.MVT.readRawGeometry_ = function (pbf, feature, flatCoordinates, ends) {
pbf.pos = feature.geometry;
var end = pbf.readVarint() + pbf.pos;
var cmd = 1;
var length = 0;
var x = 0;
var y = 0;
var coordsLen = 0;
var currentEnd = 0;
while (pbf.pos < end) {
if (!length) {
var cmdLen = pbf.readVarint();
cmd = cmdLen & 0x7;
length = cmdLen >> 3;
}
length--;
if (cmd === 1 || cmd === 2) {
x += pbf.readSVarint();
y += pbf.readSVarint();
if (cmd === 1) { // moveTo
if (coordsLen > currentEnd) {
ends.push(coordsLen);
currentEnd = coordsLen;
}
}
flatCoordinates.push(x, y);
coordsLen += 2;
} else if (cmd === 7) {
if (coordsLen > currentEnd) {
// close polygon
flatCoordinates.push(
flatCoordinates[currentEnd], flatCoordinates[currentEnd + 1]);
coordsLen += 2;
}
} else {
ol.asserts.assert(false, 59); // Invalid command found in the PBF
}
}
if (coordsLen > currentEnd) {
ends.push(coordsLen);
currentEnd = coordsLen;
}
};
/**
* @suppress {missingProperties}
* @private
* @param {number} type The raw feature's geometry type
* @param {number} numEnds Number of ends of the flat coordinates of the
* geometry.
* @return {ol.geom.GeometryType} The geometry type.
*/
ol.format.MVT.getGeometryType_ = function (type, numEnds) {
/** @type {ol.geom.GeometryType} */
var geometryType;
if (type === 1) {
geometryType = numEnds === 1 ?
ol.geom.GeometryType.POINT : ol.geom.GeometryType.MULTI_POINT;
} else if (type === 2) {
geometryType = numEnds === 1 ?
ol.geom.GeometryType.LINE_STRING :
ol.geom.GeometryType.MULTI_LINE_STRING;
} else if (type === 3) {
geometryType = ol.geom.GeometryType.POLYGON;
// MultiPolygon not relevant for rendering - winding order determines
// outer rings of polygons.
}
return geometryType;
};
/**
* @private
* @param {ol.ext.PBF} pbf PBF
* @param {Object} rawFeature Raw Mapbox feature.
* @param {olx.format.ReadOptions=} opt_options Read options.
* @return {ol.Feature|ol.render.Feature} Feature.
*/
ol.format.MVT.prototype.createFeature_ = function (pbf, rawFeature, opt_options) {
var type = rawFeature.type;
if (type === 0) {
return null;
}
var feature;
var id = rawFeature.id;
var values = rawFeature.properties;
values[this.layerName_] = rawFeature.layer.name;
var flatCoordinates = [];
var ends = [];
ol.format.MVT.readRawGeometry_(pbf, rawFeature, flatCoordinates, ends);
var geometryType = ol.format.MVT.getGeometryType_(type, ends.length);
var geom;
if (geometryType == ol.geom.GeometryType.POLYGON) {
var endss = [];
var offset = 0;
var prevEndIndex = 0;
for (var i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
if (!ol.geom.flat.orient.linearRingIsClockwise(flatCoordinates, offset, end, 2)) {
endss.push(ends.slice(prevEndIndex, i + 1));
prevEndIndex = i + 1;
}
offset = end;
}
if (endss.length > 1) {
ends = endss;
geom = new ol.geom.MultiPolygon(null);
} else {
geom = new ol.geom.Polygon(null);
}
} else {
geom = geometryType === ol.geom.GeometryType.POINT ? new ol.geom.Point(null) :
geometryType === ol.geom.GeometryType.LINE_STRING ? new ol.geom.LineString(null) :
geometryType === ol.geom.GeometryType.POLYGON ? new ol.geom.Polygon(null) :
geometryType === ol.geom.GeometryType.MULTI_POINT ? new ol.geom.MultiPoint(null) :
geometryType === ol.geom.GeometryType.MULTI_LINE_STRING ? new ol.geom.MultiLineString(null) :
null;
}
geom.setFlatCoordinates(ol.geom.GeometryLayout.XY, flatCoordinates, ends);
feature = new this.featureClass_();
if (this.geometryName_) {
feature.setGeometryName(this.geometryName_);
}
var geometry = ol.format.Feature.transformWithOptions(geom, false, this.adaptOptions(opt_options));
feature.setGeometry(geometry);
feature.setId(id);
feature.setProperties(values);
return feature;
};
ol.format.MVT.prototype.readFeatures = function (source, opt_options) {
var layers = this.layers_;
var pbf$1 = new pbf.Protobuf(/** @type {ArrayBuffer} */ (source));
var pbfLayers = pbf$1.readFields(ol.format.MVT.pbfReaders_.layers, {});
/** @type {Array.<ol.Feature|ol.render.Feature>} */
var features = [];
var pbfLayer;
for (var name in pbfLayers) {
if (layers && layers.indexOf(name) == -1) {
continue;
}
if (opt_options !== undefined) {
var needSourceLayerNames = opt_options.needSourceLayerNames;
if (needSourceLayerNames !== undefined && needSourceLayerNames[name] === undefined) {
continue;
}
}
pbfLayer = pbfLayers[name];
var rawFeature;
for (var i = 0, ii = pbfLayer.length; i < ii; ++i) {
rawFeature = ol.format.MVT.readRawFeature_(pbf$1, pbfLayer, i);
features.push(this.createFeature_(pbf$1, rawFeature));
}
this.extent_ = pbfLayer ? [0, 0, pbfLayer.extent, pbfLayer.extent] : null;
}
return features;
};
ol.style = {};
/**
* Singleton class. Available through {@link ol.style.iconImageCache}.
* @constructor
*/
ol.style.IconImageCache = function() {
this.cache_ = {};
this.cacheSize_ = 0;
this.maxCacheSize_ = 32;
};
ol.style.IconImageCache.getKey = function(src, crossOrigin, color) {
var colorString = color ? ol.color.asString(color) : 'null';
return crossOrigin + ':' + src + ':' + colorString;
};
/**
* FIXME empty description for jsdoc
*/
ol.style.IconImageCache.prototype.clear = function() {
this.cache_ = {};
this.cacheSize_ = 0;
};
/**
* FIXME empty description for jsdoc
*/
ol.style.IconImageCache.prototype.expire = function() {
if (this.cacheSize_ > this.maxCacheSize_) {
var i = 0;
var key, iconImage;
for (key in this.cache_) {
iconImage = this.cache_[key];
if ((i++ & 3) === 0 && !iconImage.hasListener()) {
delete this.cache_[key];
--this.cacheSize_;
}
}
}
};
ol.style.IconImageCache.prototype.get = function(src, crossOrigin, color) {
var key = ol.style.IconImageCache.getKey(src, crossOrigin, color);
return key in this.cache_ ? this.cache_[key] : null;
};
ol.style.IconImageCache.prototype.set = function(src, crossOrigin, color, iconImage) {
var key = ol.style.IconImageCache.getKey(src, crossOrigin, color);
this.cache_[key] = iconImage;
++this.cacheSize_;
};
ol.style.IconImageCache.prototype.setSize = function(maxCacheSize) {
this.maxCacheSize_ = maxCacheSize;
this.expire();
};
/**
* The {@link ol.style.IconImageCache} for {@link ol.style.Icon} images.
* @api
*/
ol.style.iconImageCache = new ol.style.IconImageCache();
ol.style.Image = function(options) {
/**
* @private
* @type {number}
*/
this.opacity_ = options.opacity;
/**
* @private
* @type {boolean}
*/
this.rotateWithView_ = options.rotateWithView;
/**
* @private
* @type {number}
*/
this.rotation_ = options.rotation;
/**
* @private
* @type {number}
*/
this.scale_ = options.scale;
/**
* @private
* @type {boolean}
*/
this.snapToPixel_ = options.snapToPixel;
};
ol.style.Image.prototype.getOpacity = function() {
return this.opacity_;
};
ol.style.Image.prototype.getRotateWithView = function() {
return this.rotateWithView_;
};
ol.style.Image.prototype.getRotation = function() {
return this.rotation_;
};
ol.style.Image.prototype.getScale = function() {
return this.scale_;
};
ol.style.Image.prototype.getSnapToPixel = function() {
return this.snapToPixel_;
};
ol.style.Image.prototype.getAnchor = function() {};
ol.style.Image.prototype.getImage = function(pixelRatio) {};
ol.style.Image.prototype.getHitDetectionImage = function(pixelRatio) {};
ol.style.Image.prototype.getImageState = function() {};
ol.style.Image.prototype.getImageSize = function() {};
ol.style.Image.prototype.getHitDetectionImageSize = function() {};
ol.style.Image.prototype.getOrigin = function() {};
ol.style.Image.prototype.getSize = function() {};
ol.style.Image.prototype.setOpacity = function(opacity) {
this.opacity_ = opacity;
};
ol.style.Image.prototype.setRotateWithView = function(rotateWithView) {
this.rotateWithView_ = rotateWithView;
};
ol.style.Image.prototype.setRotation = function(rotation) {
this.rotation_ = rotation;
};
ol.style.Image.prototype.setScale = function(scale) {
this.scale_ = scale;
};
ol.style.Image.prototype.setSnapToPixel = function(snapToPixel) {
this.snapToPixel_ = snapToPixel;
};
ol.style.Image.prototype.listenImageChange = function(listener, thisArg) {};
ol.style.Image.prototype.load = function() {};
ol.style.Image.prototype.unlistenImageChange = function(listener, thisArg) {};
/**
* @classdesc
* Set regular shape style for vector features. The resulting shape will be
* a regular polygon when `radius` is provided, or a star when `radius1` and
* `radius2` are provided.
*
* @constructor
* @param {olx.style.RegularShapeOptions} options Options.
* @extends {ol.style.Image}
* @api
*/
ol.style.RegularShape = function(options) {
/**
* @private
* @type {Array.<string>}
*/
this.checksums_ = null;
/**
* @private
* @type {HTMLCanvasElement}
*/
this.canvas_ = null;
/**
* @private
* @type {HTMLCanvasElement}
*/
this.hitDetectionCanvas_ = null;
/**
* @private
* @type {ol.style.Fill}
*/
this.fill_ = options.fill !== undefined ? options.fill : null;
/**
* @private
* @type {Array.<number>}
*/
this.origin_ = [0, 0];
/**
* @private
* @type {number}
*/
this.points_ = options.points;
/**
* @protected
* @type {number}
*/
this.radius_ = /** @type {number} */ (options.radius !== undefined ?
options.radius : options.radius1);
/**
* @private
* @type {number|undefined}
*/
this.radius2_ = options.radius2;
/**
* @private
* @type {number}
*/
this.angle_ = options.angle !== undefined ? options.angle : 0;
/**
* @private
* @type {ol.style.Stroke}
*/
this.stroke_ = options.stroke !== undefined ? options.stroke : null;
/**
* @private
* @type {Array.<number>}
*/
this.anchor_ = null;
/**
* @private
* @type {ol.Size}
*/
this.size_ = null;
/**
* @private
* @type {ol.Size}
*/
this.imageSize_ = null;
/**
* @private
* @type {ol.Size}
*/
this.hitDetectionImageSize_ = null;
/**
* @protected
* @type {ol.style.AtlasManager|undefined}
*/
this.atlasManager_ = options.atlasManager;
this.render_(this.atlasManager_);
/**
* @type {boolean}
*/
var snapToPixel = options.snapToPixel !== undefined ?
options.snapToPixel : true;
/**
* @type {boolean}
*/
var rotateWithView = options.rotateWithView !== undefined ?
options.rotateWithView : false;
ol.style.Image.call(this, {
opacity: 1,
rotateWithView: rotateWithView,
rotation: options.rotation !== undefined ? options.rotation : 0,
scale: 1,
snapToPixel: snapToPixel
});
};
ol.inherits(ol.style.RegularShape, ol.style.Image);
ol.style.RegularShape.prototype.clone = function() {
var style = new ol.style.RegularShape({
fill: this.getFill() ? this.getFill().clone() : undefined,
points: this.getPoints(),
radius: this.getRadius(),
radius2: this.getRadius2(),
angle: this.getAngle(),
snapToPixel: this.getSnapToPixel(),
stroke: this.getStroke() ? this.getStroke().clone() : undefined,
rotation: this.getRotation(),
rotateWithView: this.getRotateWithView(),
atlasManager: this.atlasManager_
});
style.setOpacity(this.getOpacity());
style.setScale(this.getScale());
return style;
};
/**
* @inheritDoc
* @api
*/
ol.style.RegularShape.prototype.getAnchor = function() {
return this.anchor_;
};
/**
* Get the angle used in generating the shape.
* @return {number} Shape's rotation in radians.
* @api
*/
ol.style.RegularShape.prototype.getAngle = function() {
return this.angle_;
};
/**
* Get the fill style for the shape.
* @return {ol.style.Fill} Fill style.
* @api
*/
ol.style.RegularShape.prototype.getFill = function() {
return this.fill_;
};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.getHitDetectionImage = function(pixelRatio) {
return this.hitDetectionCanvas_;
};
/**
* @inheritDoc
* @api
*/
ol.style.RegularShape.prototype.getImage = function(pixelRatio) {
return this.canvas_;
};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.getImageSize = function() {
return this.imageSize_;
};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.getHitDetectionImageSize = function() {
return this.hitDetectionImageSize_;
};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.getImageState = function() {
return ol.ImageState.LOADED;
};
/**
* @inheritDoc
* @api
*/
ol.style.RegularShape.prototype.getOrigin = function() {
return this.origin_;
};
/**
* Get the number of points for generating the shape.
* @return {number} Number of points for stars and regular polygons.
* @api
*/
ol.style.RegularShape.prototype.getPoints = function() {
return this.points_;
};
/**
* Get the (primary) radius for the shape.
* @return {number} Radius.
* @api
*/
ol.style.RegularShape.prototype.getRadius = function() {
return this.radius_;
};
/**
* Get the secondary radius for the shape.
* @return {number|undefined} Radius2.
* @api
*/
ol.style.RegularShape.prototype.getRadius2 = function() {
return this.radius2_;
};
/**
* @inheritDoc
* @api
*/
ol.style.RegularShape.prototype.getSize = function() {
return this.size_;
};
/**
* Get the stroke style for the shape.
* @return {ol.style.Stroke} Stroke style.
* @api
*/
ol.style.RegularShape.prototype.getStroke = function() {
return this.stroke_;
};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.listenImageChange = function(listener, thisArg) {};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.load = function() {};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.unlistenImageChange = function(listener, thisArg) {};
/**
* @protected
* @param {ol.style.AtlasManager|undefined} atlasManager An atlas manager.
*/
ol.style.RegularShape.prototype.render_ = function(atlasManager) {
var imageSize;
var lineCap = '';
var lineJoin = '';
var miterLimit = 0;
var lineDash = null;
var lineDashOffset = 0;
var strokeStyle;
var strokeWidth = 0;
if (this.stroke_) {
strokeStyle = this.stroke_.getColor();
if (strokeStyle === null) {
strokeStyle = ol.render.canvas.defaultStrokeStyle;
}
strokeStyle = ol.colorlike.asColorLike(strokeStyle);
strokeWidth = this.stroke_.getWidth();
if (strokeWidth === undefined) {
strokeWidth = ol.render.canvas.defaultLineWidth;
}
lineDash = this.stroke_.getLineDash();
lineDashOffset = this.stroke_.getLineDashOffset();
if (!ol.has.CANVAS_LINE_DASH) {
lineDash = null;
lineDashOffset = 0;
}
lineJoin = this.stroke_.getLineJoin();
if (lineJoin === undefined) {
lineJoin = ol.render.canvas.defaultLineJoin;
}
lineCap = this.stroke_.getLineCap();
if (lineCap === undefined) {
lineCap = ol.render.canvas.defaultLineCap;
}
miterLimit = this.stroke_.getMiterLimit();
if (miterLimit === undefined) {
miterLimit = ol.render.canvas.defaultMiterLimit;
}
}
var size = 2 * (this.radius_ + strokeWidth) + 1;
/** @type {ol.RegularShapeRenderOptions} */
var renderOptions = {
strokeStyle: strokeStyle,
strokeWidth: strokeWidth,
size: size,
lineCap: lineCap,
lineDash: lineDash,
lineDashOffset: lineDashOffset,
lineJoin: lineJoin,
miterLimit: miterLimit
};
if (atlasManager === undefined) {
// no atlas manager is used, create a new canvas
var context = ol.dom.createCanvasContext2D(size, size);
this.canvas_ = context.canvas;
// canvas.width and height are rounded to the closest integer
size = this.canvas_.width;
imageSize = size;
this.draw_(renderOptions, context, 0, 0);
this.createHitDetectionCanvas_(renderOptions);
} else {
// an atlas manager is used, add the symbol to an atlas
size = Math.round(size);
var hasCustomHitDetectionImage = !this.fill_;
var renderHitDetectionCallback;
if (hasCustomHitDetectionImage) {
// render the hit-detection image into a separate atlas image
renderHitDetectionCallback =
this.drawHitDetectionCanvas_.bind(this, renderOptions);
}
var id = this.getChecksum();
var info = atlasManager.add(
id, size, size, this.draw_.bind(this, renderOptions),
renderHitDetectionCallback);
this.canvas_ = info.image;
this.origin_ = [info.offsetX, info.offsetY];
imageSize = info.image.width;
if (hasCustomHitDetectionImage) {
this.hitDetectionCanvas_ = info.hitImage;
this.hitDetectionImageSize_ =
[info.hitImage.width, info.hitImage.height];
} else {
this.hitDetectionCanvas_ = this.canvas_;
this.hitDetectionImageSize_ = [imageSize, imageSize];
}
}
this.anchor_ = [size / 2, size / 2];
this.size_ = [size, size];
this.imageSize_ = [imageSize, imageSize];
};
/**
* @private
* @param {ol.RegularShapeRenderOptions} renderOptions Render options.
* @param {CanvasRenderingContext2D} context The rendering context.
* @param {number} x The origin for the symbol (x).
* @param {number} y The origin for the symbol (y).
*/
ol.style.RegularShape.prototype.draw_ = function(renderOptions, context, x, y) {
var i, angle0, radiusC;
// reset transform
context.setTransform(1, 0, 0, 1, 0, 0);
// then move to (x, y)
context.translate(x, y);
context.beginPath();
var points = this.points_;
if (points === Infinity) {
context.arc(
renderOptions.size / 2, renderOptions.size / 2,
this.radius_, 0, 2 * Math.PI, true);
} else {
var radius2 = (this.radius2_ !== undefined) ? this.radius2_
: this.radius_;
if (radius2 !== this.radius_) {
points = 2 * points;
}
for (i = 0; i <= points; i++) {
angle0 = i * 2 * Math.PI / points - Math.PI / 2 + this.angle_;
radiusC = i % 2 === 0 ? this.radius_ : radius2;
context.lineTo(renderOptions.size / 2 + radiusC * Math.cos(angle0),
renderOptions.size / 2 + radiusC * Math.sin(angle0));
}
}
if (this.fill_) {
var color = this.fill_.getColor();
if (color === null) {
color = ol.render.canvas.defaultFillStyle;
}
context.fillStyle = ol.colorlike.asColorLike(color);
context.fill();
}
if (this.stroke_) {
context.strokeStyle = renderOptions.strokeStyle;
context.lineWidth = renderOptions.strokeWidth;
if (renderOptions.lineDash) {
context.setLineDash(renderOptions.lineDash);
context.lineDashOffset = renderOptions.lineDashOffset;
}
context.lineCap = renderOptions.lineCap;
context.lineJoin = renderOptions.lineJoin;
context.miterLimit = renderOptions.miterLimit;
context.stroke();
}
context.closePath();
};
/**
* @private
* @param {ol.RegularShapeRenderOptions} renderOptions Render options.
*/
ol.style.RegularShape.prototype.createHitDetectionCanvas_ = function(renderOptions) {
this.hitDetectionImageSize_ = [renderOptions.size, renderOptions.size];
if (this.fill_) {
this.hitDetectionCanvas_ = this.canvas_;
return;
}
// if no fill style is set, create an extra hit-detection image with a
// default fill style
var context = ol.dom.createCanvasContext2D(renderOptions.size, renderOptions.size);
this.hitDetectionCanvas_ = context.canvas;
this.drawHitDetectionCanvas_(renderOptions, context, 0, 0);
};
/**
* @private
* @param {ol.RegularShapeRenderOptions} renderOptions Render options.
* @param {CanvasRenderingContext2D} context The context.
* @param {number} x The origin for the symbol (x).
* @param {number} y The origin for the symbol (y).
*/
ol.style.RegularShape.prototype.drawHitDetectionCanvas_ = function(renderOptions, context, x, y) {
// reset transform
context.setTransform(1, 0, 0, 1, 0, 0);
// then move to (x, y)
context.translate(x, y);
context.beginPath();
var points = this.points_;
if (points === Infinity) {
context.arc(
renderOptions.size / 2, renderOptions.size / 2,
this.radius_, 0, 2 * Math.PI, true);
} else {
var radius2 = (this.radius2_ !== undefined) ? this.radius2_
: this.radius_;
if (radius2 !== this.radius_) {
points = 2 * points;
}
var i, radiusC, angle0;
for (i = 0; i <= points; i++) {
angle0 = i * 2 * Math.PI / points - Math.PI / 2 + this.angle_;
radiusC = i % 2 === 0 ? this.radius_ : radius2;
context.lineTo(renderOptions.size / 2 + radiusC * Math.cos(angle0),
renderOptions.size / 2 + radiusC * Math.sin(angle0));
}
}
context.fillStyle = ol.render.canvas.defaultFillStyle;
context.fill();
if (this.stroke_) {
context.strokeStyle = renderOptions.strokeStyle;
context.lineWidth = renderOptions.strokeWidth;
if (renderOptions.lineDash) {
context.setLineDash(renderOptions.lineDash);
context.lineDashOffset = renderOptions.lineDashOffset;
}
context.stroke();
}
context.closePath();
};
/**
* @return {string} The checksum.
*/
ol.style.RegularShape.prototype.getChecksum = function() {
var strokeChecksum = this.stroke_ ?
this.stroke_.getChecksum() : '-';
var fillChecksum = this.fill_ ?
this.fill_.getChecksum() : '-';
var recalculate = !this.checksums_ ||
(strokeChecksum != this.checksums_[1] ||
fillChecksum != this.checksums_[2] ||
this.radius_ != this.checksums_[3] ||
this.radius2_ != this.checksums_[4] ||
this.angle_ != this.checksums_[5] ||
this.points_ != this.checksums_[6]);
if (recalculate) {
var checksum = 'r' + strokeChecksum + fillChecksum +
(this.radius_ !== undefined ? this.radius_.toString() : '-') +
(this.radius2_ !== undefined ? this.radius2_.toString() : '-') +
(this.angle_ !== undefined ? this.angle_.toString() : '-') +
(this.points_ !== undefined ? this.points_.toString() : '-');
this.checksums_ = [checksum, strokeChecksum, fillChecksum,
this.radius_, this.radius2_, this.angle_, this.points_];
}
return this.checksums_[0];
};
/**
* @classdesc
* Set circle style for vector features.
*
* @constructor
* @param {olx.style.CircleOptions=} opt_options Options.
* @extends {ol.style.RegularShape}
* @api
*/
ol.style.Circle = function(opt_options) {
var options = opt_options || {};
ol.style.RegularShape.call(this, {
points: Infinity,
fill: options.fill,
radius: options.radius,
snapToPixel: options.snapToPixel,
stroke: options.stroke,
atlasManager: options.atlasManager
});
};
ol.inherits(ol.style.Circle, ol.style.RegularShape);
/**
* Clones the style. If an atlasmanager was provided to the original style it will be used in the cloned style, too.
* @return {ol.style.Circle} The cloned style.
* @override
* @api
*/
ol.style.Circle.prototype.clone = function() {
var style = new ol.style.Circle({
fill: this.getFill() ? this.getFill().clone() : undefined,
stroke: this.getStroke() ? this.getStroke().clone() : undefined,
radius: this.getRadius(),
snapToPixel: this.getSnapToPixel(),
atlasManager: this.atlasManager_
});
style.setOpacity(this.getOpacity());
style.setScale(this.getScale());
return style;
};
/**
* Set the circle radius.
*
* @param {number} radius Circle radius.
* @api
*/
ol.style.Circle.prototype.setRadius = function(radius) {
this.radius_ = radius;
this.render_(this.atlasManager_);
};
/**
* @classdesc
* Set fill style for vector features.
*
* @constructor
* @param {olx.style.FillOptions=} opt_options Options.
* @api
*/
ol.style.Fill = function(opt_options) {
var options = opt_options || {};
/**
* @private
* @type {ol.Color|ol.ColorLike}
*/
this.color_ = options.color !== undefined ? options.color : null;
/**
* @private
* @type {string|undefined}
*/
this.checksum_ = undefined;
};
/**
* Clones the style. The color is not cloned if it is an {@link ol.ColorLike}.
* @return {ol.style.Fill} The cloned style.
* @api
*/
ol.style.Fill.prototype.clone = function() {
var color = this.getColor();
return new ol.style.Fill({
color: (color && color.slice) ? color.slice() : color || undefined
});
};
/**
* Get the fill color.
* @return {ol.Color|ol.ColorLike} Color.
* @api
*/
ol.style.Fill.prototype.getColor = function() {
return this.color_;
};
/**
* Set the color.
*
* @param {ol.Color|ol.ColorLike} color Color.
* @api
*/
ol.style.Fill.prototype.setColor = function(color) {
this.color_ = color;
this.checksum_ = undefined;
};
/**
* @return {string} The checksum.
*/
ol.style.Fill.prototype.getChecksum = function() {
if (this.checksum_ === undefined) {
if (
this.color_ instanceof CanvasPattern ||
this.color_ instanceof CanvasGradient
) {
this.checksum_ = ol.getUid(this.color_).toString();
} else {
this.checksum_ = 'f' + (this.color_ ?
ol.color.asString(this.color_) : '-');
}
}
return this.checksum_;
};
/**
* @classdesc
* Set stroke style for vector features.
* Note that the defaults given are the Canvas defaults, which will be used if
* option is not defined. The `get` functions return whatever was entered in
* the options; they will not return the default.
*
* @constructor
* @param {olx.style.StrokeOptions=} opt_options Options.
* @api
*/
ol.style.Stroke = function(opt_options) {
var options = opt_options || {};
/**
* @private
* @type {ol.Color|ol.ColorLike}
*/
this.color_ = options.color !== undefined ? options.color : null;
/**
* @private
* @type {string|undefined}
*/
this.lineCap_ = options.lineCap;
/**
* @private
* @type {Array.<number>}
*/
this.lineDash_ = options.lineDash !== undefined ? options.lineDash : null;
/**
* @private
* @type {number|undefined}
*/
this.lineDashOffset_ = options.lineDashOffset;
/**
* @private
* @type {string|undefined}
*/
this.lineJoin_ = options.lineJoin;
/**
* @private
* @type {number|undefined}
*/
this.miterLimit_ = options.miterLimit;
/**
* @private
* @type {number|undefined}
*/
this.width_ = options.width;
/**
* @private
* @type {string|undefined}
*/
this.checksum_ = undefined;
};
/**
* Clones the style.
* @return {ol.style.Stroke} The cloned style.
* @api
*/
ol.style.Stroke.prototype.clone = function() {
var color = this.getColor();
return new ol.style.Stroke({
color: (color && color.slice) ? color.slice() : color || undefined,
lineCap: this.getLineCap(),
lineDash: this.getLineDash() ? this.getLineDash().slice() : undefined,
lineDashOffset: this.getLineDashOffset(),
lineJoin: this.getLineJoin(),
miterLimit: this.getMiterLimit(),
width: this.getWidth()
});
};
/**
* Get the stroke color.
* @return {ol.Color|ol.ColorLike} Color.
* @api
*/
ol.style.Stroke.prototype.getColor = function() {
return this.color_;
};
/**
* Get the line cap type for the stroke.
* @return {string|undefined} Line cap.
* @api
*/
ol.style.Stroke.prototype.getLineCap = function() {
return this.lineCap_;
};
/**
* Get the line dash style for the stroke.
* @return {Array.<number>} Line dash.
* @api
*/
ol.style.Stroke.prototype.getLineDash = function() {
return this.lineDash_;
};
/**
* Get the line dash offset for the stroke.
* @return {number|undefined} Line dash offset.
* @api
*/
ol.style.Stroke.prototype.getLineDashOffset = function() {
return this.lineDashOffset_;
};
/**
* Get the line join type for the stroke.
* @return {string|undefined} Line join.
* @api
*/
ol.style.Stroke.prototype.getLineJoin = function() {
return this.lineJoin_;
};
/**
* Get the miter limit for the stroke.
* @return {number|undefined} Miter limit.
* @api
*/
ol.style.Stroke.prototype.getMiterLimit = function() {
return this.miterLimit_;
};
/**
* Get the stroke width.
* @return {number|undefined} Width.
* @api
*/
ol.style.Stroke.prototype.getWidth = function() {
return this.width_;
};
/**
* Set the color.
*
* @param {ol.Color|ol.ColorLike} color Color.
* @api
*/
ol.style.Stroke.prototype.setColor = function(color) {
this.color_ = color;
this.checksum_ = undefined;
};
/**
* Set the line cap.
*
* @param {string|undefined} lineCap Line cap.
* @api
*/
ol.style.Stroke.prototype.setLineCap = function(lineCap) {
this.lineCap_ = lineCap;
this.checksum_ = undefined;
};
/**
* Set the line dash.
*
* Please note that Internet Explorer 10 and lower [do not support][mdn] the
* `setLineDash` method on the `CanvasRenderingContext2D` and therefore this
* property will have no visual effect in these browsers.
*
* [mdn]: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash#Browser_compatibility
*
* @param {Array.<number>} lineDash Line dash.
* @api
*/
ol.style.Stroke.prototype.setLineDash = function(lineDash) {
this.lineDash_ = lineDash;
this.checksum_ = undefined;
};
/**
* Set the line dash offset.
*
* @param {number|undefined} lineDashOffset Line dash offset.
* @api
*/
ol.style.Stroke.prototype.setLineDashOffset = function(lineDashOffset) {
this.lineDashOffset_ = lineDashOffset;
this.checksum_ = undefined;
};
/**
* Set the line join.
*
* @param {string|undefined} lineJoin Line join.
* @api
*/
ol.style.Stroke.prototype.setLineJoin = function(lineJoin) {
this.lineJoin_ = lineJoin;
this.checksum_ = undefined;
};
/**
* Set the miter limit.
*
* @param {number|undefined} miterLimit Miter limit.
* @api
*/
ol.style.Stroke.prototype.setMiterLimit = function(miterLimit) {
this.miterLimit_ = miterLimit;
this.checksum_ = undefined;
};
/**
* Set the width.
*
* @param {number|undefined} width Width.
* @api
*/
ol.style.Stroke.prototype.setWidth = function(width) {
this.width_ = width;
this.checksum_ = undefined;
};
/**
* @return {string} The checksum.
*/
ol.style.Stroke.prototype.getChecksum = function() {
if (this.checksum_ === undefined) {
this.checksum_ = 's';
if (this.color_) {
if (typeof this.color_ === 'string') {
this.checksum_ += this.color_;
} else {
this.checksum_ += ol.getUid(this.color_).toString();
}
} else {
this.checksum_ += '-';
}
this.checksum_ += ',' +
(this.lineCap_ !== undefined ?
this.lineCap_.toString() : '-') + ',' +
(this.lineDash_ ?
this.lineDash_.toString() : '-') + ',' +
(this.lineDashOffset_ !== undefined ?
this.lineDashOffset_ : '-') + ',' +
(this.lineJoin_ !== undefined ?
this.lineJoin_ : '-') + ',' +
(this.miterLimit_ !== undefined ?
this.miterLimit_.toString() : '-') + ',' +
(this.width_ !== undefined ?
this.width_.toString() : '-');
}
return this.checksum_;
};
/**
* Icon anchor units. One of 'fraction', 'pixels'.
* @enum {string}
*/
ol.style.IconAnchorUnits = {
FRACTION: 'fraction',
PIXELS: 'pixels'
};
/**
* @constructor
* @param {Image|HTMLCanvasElement} image Image.
* @param {string|undefined} src Src.
* @param {ol.Size} size Size.
* @param {?string} crossOrigin Cross origin.
* @param {ol.ImageState} imageState Image state.
* @param {ol.Color} color Color.
* @extends {ol.events.EventTarget}
*/
ol.style.IconImage = function(image, src, size, crossOrigin, imageState,
color) {
ol.events.EventTarget.call(this);
/**
* @private
* @type {Image|HTMLCanvasElement}
*/
this.hitDetectionImage_ = null;
/**
* @private
* @type {Image|HTMLCanvasElement}
*/
this.image_ = !image ? new Image() : image;
if (crossOrigin !== null) {
this.image_.crossOrigin = crossOrigin;
}
/**
* @private
* @type {HTMLCanvasElement}
*/
this.canvas_ = color ?
/** @type {HTMLCanvasElement} */ (document.createElement('CANVAS')) :
null;
/**
* @private
* @type {ol.Color}
*/
this.color_ = color;
/**
* @private
* @type {Array.<ol.EventsKey>}
*/
this.imageListenerKeys_ = null;
/**
* @private
* @type {ol.ImageState}
*/
this.imageState_ = imageState;
/**
* @private
* @type {ol.Size}
*/
this.size_ = size;
/**
* @private
* @type {string|undefined}
*/
this.src_ = src;
/**
* @private
* @type {boolean}
*/
this.tainting_ = false;
if (this.imageState_ == ol.ImageState.LOADED) {
this.determineTainting_();
}
};
ol.inherits(ol.style.IconImage, ol.events.EventTarget);
/**
* @param {Image|HTMLCanvasElement} image Image.
* @param {string} src Src.
* @param {ol.Size} size Size.
* @param {?string} crossOrigin Cross origin.
* @param {ol.ImageState} imageState Image state.
* @param {ol.Color} color Color.
* @return {ol.style.IconImage} Icon image.
*/
ol.style.IconImage.get = function(image, src, size, crossOrigin, imageState,
color) {
var iconImageCache = ol.style.iconImageCache;
var iconImage = iconImageCache.get(src, crossOrigin, color);
if (!iconImage) {
iconImage = new ol.style.IconImage(
image, src, size, crossOrigin, imageState, color);
iconImageCache.set(src, crossOrigin, color, iconImage);
}
return iconImage;
};
/**
* @private
*/
ol.style.IconImage.prototype.determineTainting_ = function() {
var context = ol.dom.createCanvasContext2D(1, 1);
try {
context.drawImage(this.image_, 0, 0);
context.getImageData(0, 0, 1, 1);
} catch (e) {
this.tainting_ = true;
}
};
/**
* @private
*/
ol.style.IconImage.prototype.dispatchChangeEvent_ = function() {
this.dispatchEvent(ol.events.EventType.CHANGE);
};
/**
* @private
*/
ol.style.IconImage.prototype.handleImageError_ = function() {
this.imageState_ = ol.ImageState.ERROR;
this.unlistenImage_();
this.dispatchChangeEvent_();
};
/**
* @private
*/
ol.style.IconImage.prototype.handleImageLoad_ = function() {
this.imageState_ = ol.ImageState.LOADED;
if (this.size_) {
this.image_.width = this.size_[0];
this.image_.height = this.size_[1];
}
this.size_ = [this.image_.width, this.image_.height];
this.unlistenImage_();
this.determineTainting_();
this.replaceColor_();
this.dispatchChangeEvent_();
};
/**
* @param {number} pixelRatio Pixel ratio.
* @return {Image|HTMLCanvasElement} Image or Canvas element.
*/
ol.style.IconImage.prototype.getImage = function(pixelRatio) {
return this.canvas_ ? this.canvas_ : this.image_;
};
/**
* @return {ol.ImageState} Image state.
*/
ol.style.IconImage.prototype.getImageState = function() {
return this.imageState_;
};
/**
* @param {number} pixelRatio Pixel ratio.
* @return {Image|HTMLCanvasElement} Image element.
*/
ol.style.IconImage.prototype.getHitDetectionImage = function(pixelRatio) {
if (!this.hitDetectionImage_) {
if (this.tainting_) {
var width = this.size_[0];
var height = this.size_[1];
var context = ol.dom.createCanvasContext2D(width, height);
context.fillRect(0, 0, width, height);
this.hitDetectionImage_ = context.canvas;
} else {
this.hitDetectionImage_ = this.image_;
}
}
return this.hitDetectionImage_;
};
/**
* @return {ol.Size} Image size.
*/
ol.style.IconImage.prototype.getSize = function() {
return this.size_;
};
/**
* @return {string|undefined} Image src.
*/
ol.style.IconImage.prototype.getSrc = function() {
return this.src_;
};
/**
* Load not yet loaded URI.
*/
ol.style.IconImage.prototype.load = function() {
if (this.imageState_ == ol.ImageState.IDLE) {
this.imageState_ = ol.ImageState.LOADING;
this.imageListenerKeys_ = [
ol.events.listenOnce(this.image_, ol.events.EventType.ERROR,
this.handleImageError_, this),
ol.events.listenOnce(this.image_, ol.events.EventType.LOAD,
this.handleImageLoad_, this)
];
try {
this.image_.src = this.src_;
} catch (e) {
this.handleImageError_();
}
}
};
/**
* @private
*/
ol.style.IconImage.prototype.replaceColor_ = function() {
if (this.tainting_ || this.color_ === null) {
return;
}
this.canvas_.width = this.image_.width;
this.canvas_.height = this.image_.height;
var ctx = this.canvas_.getContext('2d');
ctx.drawImage(this.image_, 0, 0);
var imgData = ctx.getImageData(0, 0, this.image_.width, this.image_.height);
var data = imgData.data;
var r = this.color_[0] / 255.0;
var g = this.color_[1] / 255.0;
var b = this.color_[2] / 255.0;
for (var i = 0, ii = data.length; i < ii; i += 4) {
data[i] *= r;
data[i + 1] *= g;
data[i + 2] *= b;
}
ctx.putImageData(imgData, 0, 0);
};
/**
* Discards event handlers which listen for load completion or errors.
*
* @private
*/
ol.style.IconImage.prototype.unlistenImage_ = function() {
this.imageListenerKeys_.forEach(ol.events.unlistenByKey);
this.imageListenerKeys_ = null;
};
/**
* Icon origin. One of 'bottom-left', 'bottom-right', 'top-left', 'top-right'.
* @enum {string}
*/
ol.style.IconOrigin = {
BOTTOM_LEFT: 'bottom-left',
BOTTOM_RIGHT: 'bottom-right',
TOP_LEFT: 'top-left',
TOP_RIGHT: 'top-right'
};
/**
* @classdesc
* Set icon style for vector features.
*
* @constructor
* @param {olx.style.IconOptions=} opt_options Options.
* @extends {ol.style.Image}
* @api
*/
ol.style.Icon = function(opt_options) {
var options = opt_options || {};
/**
* @private
* @type {Array.<number>}
*/
this.anchor_ = options.anchor !== undefined ? options.anchor : [0.5, 0.5];
/**
* @private
* @type {Array.<number>}
*/
this.normalizedAnchor_ = null;
/**
* @private
* @type {ol.style.IconOrigin}
*/
this.anchorOrigin_ = options.anchorOrigin !== undefined ?
options.anchorOrigin : ol.style.IconOrigin.TOP_LEFT;
/**
* @private
* @type {ol.style.IconAnchorUnits}
*/
this.anchorXUnits_ = options.anchorXUnits !== undefined ?
options.anchorXUnits : ol.style.IconAnchorUnits.FRACTION;
/**
* @private
* @type {ol.style.IconAnchorUnits}
*/
this.anchorYUnits_ = options.anchorYUnits !== undefined ?
options.anchorYUnits : ol.style.IconAnchorUnits.FRACTION;
/**
* @private
* @type {?string}
*/
this.crossOrigin_ =
options.crossOrigin !== undefined ? options.crossOrigin : null;
/**
* @type {Image|HTMLCanvasElement}
*/
var image = options.img !== undefined ? options.img : null;
/**
* @type {ol.Size}
*/
var imgSize = options.imgSize !== undefined ? options.imgSize : null;
/**
* @type {string|undefined}
*/
var src = options.src;
// ol.asserts.assert(!(src !== undefined && image),
// 4); // `image` and `src` cannot be provided at the same time
// ol.asserts.assert(!image || (image && imgSize),
// 5); // `imgSize` must be set when `image` is provided
if ((src === undefined || src.length === 0) && image) {
src = image.src || ol.getUid(image).toString();
}
// ol.asserts.assert(src !== undefined && src.length > 0,
// 6); // A defined and non-empty `src` or `image` must be provided
/**
* @type {ol.ImageState}
*/
var imageState = options.src !== undefined ?
ol.ImageState.IDLE : ol.ImageState.LOADED;
/**
* @private
* @type {ol.Color}
*/
this.color_ = options.color !== undefined ? ol.color.asArray(options.color) :
null;
/**
* @private
* @type {ol.style.IconImage}
*/
this.iconImage_ = ol.style.IconImage.get(
image, /** @type {string} */ (src), imgSize, this.crossOrigin_, imageState, this.color_);
/**
* @private
* @type {Array.<number>}
*/
this.offset_ = options.offset !== undefined ? options.offset : [0, 0];
/**
* @private
* @type {ol.style.IconOrigin}
*/
this.offsetOrigin_ = options.offsetOrigin !== undefined ?
options.offsetOrigin : ol.style.IconOrigin.TOP_LEFT;
/**
* @private
* @type {Array.<number>}
*/
this.origin_ = null;
/**
* @private
* @type {ol.Size}
*/
this.size_ = options.size !== undefined ? options.size : null;
/**
* @type {number}
*/
var opacity = options.opacity !== undefined ? options.opacity : 1;
/**
* @type {boolean}
*/
var rotateWithView = options.rotateWithView !== undefined ?
options.rotateWithView : false;
/**
* @type {number}
*/
var rotation = options.rotation !== undefined ? options.rotation : 0;
/**
* @type {number}
*/
var scale = options.scale !== undefined ? options.scale : 1;
/**
* @type {boolean}
*/
var snapToPixel = options.snapToPixel !== undefined ?
options.snapToPixel : true;
ol.style.Image.call(this, {
opacity: opacity,
rotation: rotation,
scale: scale,
snapToPixel: snapToPixel,
rotateWithView: rotateWithView
});
};
ol.inherits(ol.style.Icon, ol.style.Image);
/**
* Clones the style. The underlying Image/HTMLCanvasElement is not cloned.
* @return {ol.style.Icon} The cloned style.
* @api
*/
ol.style.Icon.prototype.clone = function() {
return new ol.style.Icon({
anchor: this.anchor_.slice(),
anchorOrigin: this.anchorOrigin_,
anchorXUnits: this.anchorXUnits_,
anchorYUnits: this.anchorYUnits_,
crossOrigin: this.crossOrigin_,
color: (this.color_ && this.color_.slice) ? this.color_.slice() : this.color_ || undefined,
src: this.getSrc(),
offset: this.offset_.slice(),
offsetOrigin: this.offsetOrigin_,
size: this.size_ !== null ? this.size_.slice() : undefined,
opacity: this.getOpacity(),
scale: this.getScale(),
snapToPixel: this.getSnapToPixel(),
rotation: this.getRotation(),
rotateWithView: this.getRotateWithView()
});
};
/**
* @inheritDoc
* @api
*/
ol.style.Icon.prototype.getAnchor = function() {
if (this.normalizedAnchor_) {
return this.normalizedAnchor_;
}
var anchor = this.anchor_;
var size = this.getSize();
if (this.anchorXUnits_ == ol.style.IconAnchorUnits.FRACTION ||
this.anchorYUnits_ == ol.style.IconAnchorUnits.FRACTION) {
if (!size) {
return null;
}
anchor = this.anchor_.slice();
if (this.anchorXUnits_ == ol.style.IconAnchorUnits.FRACTION) {
anchor[0] *= size[0];
}
if (this.anchorYUnits_ == ol.style.IconAnchorUnits.FRACTION) {
anchor[1] *= size[1];
}
}
if (this.anchorOrigin_ != ol.style.IconOrigin.TOP_LEFT) {
if (!size) {
return null;
}
if (anchor === this.anchor_) {
anchor = this.anchor_.slice();
}
if (this.anchorOrigin_ == ol.style.IconOrigin.TOP_RIGHT ||
this.anchorOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
anchor[0] = -anchor[0] + size[0];
}
if (this.anchorOrigin_ == ol.style.IconOrigin.BOTTOM_LEFT ||
this.anchorOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
anchor[1] = -anchor[1] + size[1];
}
}
this.normalizedAnchor_ = anchor;
return this.normalizedAnchor_;
};
/**
* Get the icon color.
* @return {ol.Color} Color.
* @api
*/
ol.style.Icon.prototype.getColor = function() {
return this.color_;
};
/**
* Get the image icon.
* @param {number} pixelRatio Pixel ratio.
* @return {Image|HTMLCanvasElement} Image or Canvas element.
* @override
* @api
*/
ol.style.Icon.prototype.getImage = function(pixelRatio) {
return this.iconImage_.getImage(pixelRatio);
};
/**
* @override
*/
ol.style.Icon.prototype.getImageSize = function() {
return this.iconImage_.getSize();
};
/**
* @override
*/
ol.style.Icon.prototype.getHitDetectionImageSize = function() {
return this.getImageSize();
};
/**
* @override
*/
ol.style.Icon.prototype.getImageState = function() {
return this.iconImage_.getImageState();
};
/**
* @override
*/
ol.style.Icon.prototype.getHitDetectionImage = function(pixelRatio) {
return this.iconImage_.getHitDetectionImage(pixelRatio);
};
/**
* @inheritDoc
* @api
*/
ol.style.Icon.prototype.getOrigin = function() {
if (this.origin_) {
return this.origin_;
}
var offset = this.offset_;
if (this.offsetOrigin_ != ol.style.IconOrigin.TOP_LEFT) {
var size = this.getSize();
var iconImageSize = this.iconImage_.getSize();
if (!size || !iconImageSize) {
return null;
}
offset = offset.slice();
if (this.offsetOrigin_ == ol.style.IconOrigin.TOP_RIGHT ||
this.offsetOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
offset[0] = iconImageSize[0] - size[0] - offset[0];
}
if (this.offsetOrigin_ == ol.style.IconOrigin.BOTTOM_LEFT ||
this.offsetOrigin_ == ol.style.IconOrigin.BOTTOM_RIGHT) {
offset[1] = iconImageSize[1] - size[1] - offset[1];
}
}
this.origin_ = offset;
return this.origin_;
};
/**
* Get the image URL.
* @return {string|undefined} Image src.
* @api
*/
ol.style.Icon.prototype.getSrc = function() {
return this.iconImage_.getSrc();
};
/**
* @inheritDoc
* @api
*/
ol.style.Icon.prototype.getSize = function() {
return !this.size_ ? this.iconImage_.getSize() : this.size_;
};
/**
* @override
*/
ol.style.Icon.prototype.listenImageChange = function(listener, thisArg) {
return ol.events.listen(this.iconImage_, ol.events.EventType.CHANGE,
listener, thisArg);
};
/**
* Load not yet loaded URI.
* When rendering a feature with an icon style, the vector renderer will
* automatically call this method. However, you might want to call this
* method yourself for preloading or other purposes.
* @override
* @api
*/
ol.style.Icon.prototype.load = function() {
this.iconImage_.load();
};
/**
* @override
*/
ol.style.Icon.prototype.unlistenImageChange = function(listener, thisArg) {
ol.events.unlisten(this.iconImage_, ol.events.EventType.CHANGE,
listener, thisArg);
};
ol.style.Text = function(opt_options) {
var options = opt_options || {};
this.font_ = options.font;
this.rotation_ = options.rotation;
this.rotateWithView_ = options.rotateWithView;
this.scale_ = options.scale;
this.text_ = options.text;
this.textAlign_ = options.textAlign;
this.textBaseline_ = options.textBaseline;
this.fill_ = options.fill !== undefined ? options.fill :
new ol.style.Fill({color: ol.style.Text.DEFAULT_FILL_COLOR_});
this.maxAngle_ = options.maxAngle !== undefined ? options.maxAngle : Math.PI / 4;
this.placement_ = options.placement !== undefined ? options.placement : ol.style.TextPlacement.POINT;
//TODO Use options.overflow directly after removing @deprecated exceedLength
var overflow = options.overflow === undefined ? options.exceedLength : options.overflow;
this.overflow_ = overflow !== undefined ? overflow : false;
this.stroke_ = options.stroke !== undefined ? options.stroke : null;
this.offsetX_ = options.offsetX !== undefined ? options.offsetX : 0;
this.offsetY_ = options.offsetY !== undefined ? options.offsetY : 0;
this.backgroundFill_ = options.backgroundFill ? options.backgroundFill : null;
this.backgroundStroke_ = options.backgroundStroke ? options.backgroundStroke : null;
this.padding_ = options.padding === undefined ? null : options.padding;
};
ol.style.Text.DEFAULT_FILL_COLOR_ = '#333';
ol.style.Text.prototype.clone = function() {
return new ol.style.Text({
font: this.getFont(),
placement: this.getPlacement(),
maxAngle: this.getMaxAngle(),
overflow: this.getOverflow(),
rotation: this.getRotation(),
rotateWithView: this.getRotateWithView(),
scale: this.getScale(),
text: this.getText(),
textAlign: this.getTextAlign(),
textBaseline: this.getTextBaseline(),
fill: this.getFill() ? this.getFill().clone() : undefined,
stroke: this.getStroke() ? this.getStroke().clone() : undefined,
offsetX: this.getOffsetX(),
offsetY: this.getOffsetY()
});
};
ol.style.Text.prototype.getOverflow = function() {
return this.overflow_;
};
ol.style.Text.prototype.getFont = function() {
return this.font_;
};
ol.style.Text.prototype.getMaxAngle = function() {
return this.maxAngle_;
};
ol.style.Text.prototype.getPlacement = function() {
return this.placement_;
};
ol.style.Text.prototype.getOffsetX = function() {
return this.offsetX_;
};
ol.style.Text.prototype.getOffsetY = function() {
return this.offsetY_;
};
ol.style.Text.prototype.getFill = function() {
return this.fill_;
};
ol.style.Text.prototype.getRotateWithView = function() {
return this.rotateWithView_;
};
ol.style.Text.prototype.getRotation = function() {
return this.rotation_;
};
ol.style.Text.prototype.getScale = function() {
return this.scale_;
};
ol.style.Text.prototype.getStroke = function() {
return this.stroke_;
};
ol.style.Text.prototype.getText = function() {
return this.text_;
};
ol.style.Text.prototype.getTextAlign = function() {
return this.textAlign_;
};
ol.style.Text.prototype.getTextBaseline = function() {
return this.textBaseline_;
};
ol.style.Text.prototype.getBackgroundFill = function() {
return this.backgroundFill_;
};
ol.style.Text.prototype.getBackgroundStroke = function() {
return this.backgroundStroke_;
};
ol.style.Text.prototype.getPadding = function() {
return this.padding_;
};
ol.style.Text.prototype.setOverflow = function(overflow) {
this.overflow_ = overflow;
};
ol.style.Text.prototype.setFont = function(font) {
this.font_ = font;
};
ol.style.Text.prototype.setMaxAngle = function(maxAngle) {
this.maxAngle_ = maxAngle;
};
ol.style.Text.prototype.setOffsetX = function(offsetX) {
this.offsetX_ = offsetX;
};
ol.style.Text.prototype.setOffsetY = function(offsetY) {
this.offsetY_ = offsetY;
};
ol.style.Text.prototype.setPlacement = function(placement) {
this.placement_ = placement;
};
ol.style.Text.prototype.setFill = function(fill) {
this.fill_ = fill;
};
ol.style.Text.prototype.setRotation = function(rotation) {
this.rotation_ = rotation;
};
ol.style.Text.prototype.setScale = function(scale) {
this.scale_ = scale;
};
ol.style.Text.prototype.setStroke = function(stroke) {
this.stroke_ = stroke;
};
ol.style.Text.prototype.setText = function(text) {
this.text_ = text;
};
ol.style.Text.prototype.setTextAlign = function(textAlign) {
this.textAlign_ = textAlign;
};
ol.style.Text.prototype.setTextBaseline = function(textBaseline) {
this.textBaseline_ = textBaseline;
};
ol.style.Text.prototype.setBackgroundFill = function(fill) {
this.backgroundFill_ = fill;
};
ol.style.Text.prototype.setBackgroundStroke = function(stroke) {
this.backgroundStroke_ = stroke;
};
ol.style.Text.prototype.setPadding = function(padding) {
this.padding_ = padding;
};
ol.style.Style = function(opt_options) {
var options = opt_options || {};
/**
* @private
* @type {string|ol.geom.Geometry|ol.StyleGeometryFunction}
*/
this.geometry_ = null;
/**
* @private
* @type {!ol.StyleGeometryFunction}
*/
this.geometryFunction_ = ol.style.Style.defaultGeometryFunction;
if (options.geometry !== undefined) {
this.setGeometry(options.geometry);
}
/**
* @private
* @type {ol.style.Fill}
*/
this.fill_ = options.fill !== undefined ? options.fill : null;
/**
* @private
* @type {ol.style.Image}
*/
this.image_ = options.image !== undefined ? options.image : null;
/**
* @private
* @type {ol.StyleRenderFunction|null}
*/
this.renderer_ = options.renderer !== undefined ? options.renderer : null;
/**
* @private
* @type {ol.style.Stroke}
*/
this.stroke_ = options.stroke !== undefined ? options.stroke : null;
/**
* @private
* @type {ol.style.Text}
*/
this.text_ = options.text !== undefined ? options.text : null;
/**
* @private
* @type {number|undefined}
*/
this.zIndex_ = options.zIndex;
};
/**
* Clones the style.
* @return {ol.style.Style} The cloned style.
* @api
*/
ol.style.Style.prototype.clone = function() {
var geometry = this.getGeometry();
if (geometry && geometry.clone) {
geometry = geometry.clone();
}
return new ol.style.Style({
geometry: geometry,
fill: this.getFill() ? this.getFill().clone() : undefined,
image: this.getImage() ? this.getImage().clone() : undefined,
stroke: this.getStroke() ? this.getStroke().clone() : undefined,
text: this.getText() ? this.getText().clone() : undefined,
zIndex: this.getZIndex()
});
};
/**
* Get the custom renderer function that was configured with
* {@link #setRenderer} or the `renderer` constructor option.
* @return {ol.StyleRenderFunction|null} Custom renderer function.
* @api
*/
ol.style.Style.prototype.getRenderer = function() {
return this.renderer_;
};
/**
* Sets a custom renderer function for this style. When set, `fill`, `stroke`
* and `image` options of the style will be ignored.
* @param {ol.StyleRenderFunction|null} renderer Custom renderer function.
* @api
*/
ol.style.Style.prototype.setRenderer = function(renderer) {
this.renderer_ = renderer;
};
/**
* Get the geometry to be rendered.
* @return {string|ol.geom.Geometry|ol.StyleGeometryFunction}
* Feature property or geometry or function that returns the geometry that will
* be rendered with this style.
* @api
*/
ol.style.Style.prototype.getGeometry = function() {
return this.geometry_;
};
/**
* Get the function used to generate a geometry for rendering.
* @return {!ol.StyleGeometryFunction} Function that is called with a feature
* and returns the geometry to render instead of the feature's geometry.
* @api
*/
ol.style.Style.prototype.getGeometryFunction = function() {
return this.geometryFunction_;
};
/**
* Get the fill style.
* @return {ol.style.Fill} Fill style.
* @api
*/
ol.style.Style.prototype.getFill = function() {
return this.fill_;
};
/**
* Set the fill style.
* @param {ol.style.Fill} fill Fill style.
* @api
*/
ol.style.Style.prototype.setFill = function(fill) {
this.fill_ = fill;
};
/**
* Get the image style.
* @return {ol.style.Image} Image style.
* @api
*/
ol.style.Style.prototype.getImage = function() {
return this.image_;
};
/**
* Set the image style.
* @param {ol.style.Image} image Image style.
* @api
*/
ol.style.Style.prototype.setImage = function(image) {
this.image_ = image;
};
/**
* Get the stroke style.
* @return {ol.style.Stroke} Stroke style.
* @api
*/
ol.style.Style.prototype.getStroke = function() {
return this.stroke_;
};
/**
* Set the stroke style.
* @param {ol.style.Stroke} stroke Stroke style.
* @api
*/
ol.style.Style.prototype.setStroke = function(stroke) {
this.stroke_ = stroke;
};
/**
* Get the text style.
* @return {ol.style.Text} Text style.
* @api
*/
ol.style.Style.prototype.getText = function() {
return this.text_;
};
/**
* Set the text style.
* @param {ol.style.Text} text Text style.
* @api
*/
ol.style.Style.prototype.setText = function(text) {
this.text_ = text;
};
/**
* Get the z-index for the style.
* @return {number|undefined} ZIndex.
* @api
*/
ol.style.Style.prototype.getZIndex = function() {
return this.zIndex_;
};
/**
* Set a geometry that is rendered instead of the feature's geometry.
*
* @param {string|ol.geom.Geometry|ol.StyleGeometryFunction} geometry
* Feature property or geometry or function returning a geometry to render
* for this style.
* @api
*/
ol.style.Style.prototype.setGeometry = function(geometry) {
if (typeof geometry === 'function') {
this.geometryFunction_ = geometry;
} else if (typeof geometry === 'string') {
this.geometryFunction_ = function(feature) {
return /** @type {ol.geom.Geometry} */ (feature.get(geometry));
};
} else if (!geometry) {
this.geometryFunction_ = ol.style.Style.defaultGeometryFunction;
} else if (geometry !== undefined) {
this.geometryFunction_ = function() {
return /** @type {ol.geom.Geometry} */ (geometry);
};
}
this.geometry_ = geometry;
};
/**
* Set the z-index.
*
* @param {number|undefined} zIndex ZIndex.
* @api
*/
ol.style.Style.prototype.setZIndex = function(zIndex) {
this.zIndex_ = zIndex;
};
/**
* Convert the provided object into a style function. Functions passed through
* unchanged. Arrays of ol.style.Style or single style objects wrapped in a
* new style function.
* @param {ol.StyleFunction|Array.<ol.style.Style>|ol.style.Style} obj
* A style function, a single style, or an array of styles.
* @return {ol.StyleFunction} A style function.
*/
ol.style.Style.createFunction = function(obj) {
var styleFunction;
if (typeof obj === 'function') {
styleFunction = obj;
} else {
/**
* @type {Array.<ol.style.Style>}
*/
var styles;
if (Array.isArray(obj)) {
styles = obj;
} else {
ol.asserts.assert(obj instanceof ol.style.Style,
41); // Expected an `ol.style.Style` or an array of `ol.style.Style`
styles = [obj];
}
styleFunction = function() {
return styles;
};
}
return styleFunction;
};
/**
* @type {Array.<ol.style.Style>}
* @private
*/
ol.style.Style.default_ = null;
/**
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @param {number} resolution Resolution.
* @return {Array.<ol.style.Style>} Style.
*/
ol.style.Style.defaultFunction = function(feature, resolution) {
// We don't use an immediately-invoked function
// and a closure so we don't get an error at script evaluation time in
// browsers that do not support Canvas. (ol.style.Circle does
// canvas.getContext('2d') at construction time, which will cause an.error
// in such browsers.)
if (!ol.style.Style.default_) {
var fill = new ol.style.Fill({
color: 'rgba(255,255,255,0.4)'
});
var stroke = new ol.style.Stroke({
color: '#3399CC',
width: 1.25
});
ol.style.Style.default_ = [
new ol.style.Style({
image: new ol.style.Circle({
fill: fill,
stroke: stroke,
radius: 5
}),
fill: fill,
stroke: stroke
})
];
}
return ol.style.Style.default_;
};
/**
* Default styles for editing features.
* @return {Object.<ol.geom.GeometryType, Array.<ol.style.Style>>} Styles
*/
ol.style.Style.createDefaultEditing = function() {
/** @type {Object.<ol.geom.GeometryType, Array.<ol.style.Style>>} */
var styles = {};
var white = [255, 255, 255, 1];
var blue = [0, 153, 255, 1];
var width = 3;
styles[ol.geom.GeometryType.POLYGON] = [
new ol.style.Style({
fill: new ol.style.Fill({
color: [255, 255, 255, 0.5]
})
})
];
styles[ol.geom.GeometryType.MULTI_POLYGON] =
styles[ol.geom.GeometryType.POLYGON];
styles[ol.geom.GeometryType.LINE_STRING] = [
new ol.style.Style({
stroke: new ol.style.Stroke({
color: white,
width: width + 2
})
}),
new ol.style.Style({
stroke: new ol.style.Stroke({
color: blue,
width: width
})
})
];
styles[ol.geom.GeometryType.MULTI_LINE_STRING] =
styles[ol.geom.GeometryType.LINE_STRING];
styles[ol.geom.GeometryType.CIRCLE] =
styles[ol.geom.GeometryType.POLYGON].concat(
styles[ol.geom.GeometryType.LINE_STRING]
);
styles[ol.geom.GeometryType.POINT] = [
new ol.style.Style({
image: new ol.style.Circle({
radius: width * 2,
fill: new ol.style.Fill({
color: blue
}),
stroke: new ol.style.Stroke({
color: white,
width: width / 2
})
}),
zIndex: Infinity
})
];
styles[ol.geom.GeometryType.MULTI_POINT] =
styles[ol.geom.GeometryType.POINT];
styles[ol.geom.GeometryType.GEOMETRY_COLLECTION] =
styles[ol.geom.GeometryType.POLYGON].concat(
styles[ol.geom.GeometryType.LINE_STRING],
styles[ol.geom.GeometryType.POINT]
);
return styles;
};
/**
* Function that is called with a feature and returns its default geometry.
* @param {ol.Feature|ol.render.Feature} feature Feature to get the geometry
* for.
* @return {ol.geom.Geometry|ol.render.Feature|undefined} Geometry to render.
*/
ol.style.Style.defaultGeometryFunction = function(feature) {
return feature.getGeometry();
};
ol.ext = {};
ol.ext.rbush = function() {};
(function() {(function (exports) {
var quickselect_1 = quickselect;
var default_1 = quickselect;
function quickselect(arr, k, left, right, compare) {
quickselectStep(arr, k, left || 0, right || (arr.length - 1), compare || defaultCompare);
}
function quickselectStep(arr, k, left, right, compare) {
while (right > left) {
if (right - left > 600) {
var n = right - left + 1;
var m = k - left + 1;
var z = Math.log(n);
var s = 0.5 * Math.exp(2 * z / 3);
var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
quickselectStep(arr, k, newLeft, newRight, compare);
}
var t = arr[k];
var i = left;
var j = right;
swap(arr, left, k);
if (compare(arr[right], t) > 0) swap(arr, left, right);
while (i < j) {
swap(arr, i, j);
i++;
j--;
while (compare(arr[i], t) < 0) i++;
while (compare(arr[j], t) > 0) j--;
}
if (compare(arr[left], t) === 0) swap(arr, left, j);
else {
j++;
swap(arr, j, right);
}
if (j <= k) left = j + 1;
if (k <= j) right = j - 1;
}
}
function swap(arr, i, j) {
var tmp = arr[i];
arr[i] = arr[j];
arr[j] = tmp;
}
function defaultCompare(a, b) {
return a < b ? -1 : a > b ? 1 : 0;
}
quickselect_1.default = default_1;
var rbush_1 = rbush;
function rbush(maxEntries, format) {
if (!(this instanceof rbush)) return new rbush(maxEntries, format);
this._maxEntries = Math.max(4, maxEntries || 9);
this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));
if (format) {
this._initFormat(format);
}
this.clear();
}
rbush.prototype = {
all: function () {
return this._all(this.data, []);
},
search: function (bbox) {
var node = this.data,
result = [],
toBBox = this.toBBox;
if (!intersects(bbox, node)) return result;
var nodesToSearch = [],
i, len, child, childBBox;
while (node) {
for (i = 0, len = node.children.length; i < len; i++) {
child = node.children[i];
childBBox = node.leaf ? toBBox(child) : child;
if (intersects(bbox, childBBox)) {
if (node.leaf) result.push(child);
else if (contains(bbox, childBBox)) this._all(child, result);
else nodesToSearch.push(child);
}
}
node = nodesToSearch.pop();
}
return result;
},
collides: function (bbox) {
var node = this.data,
toBBox = this.toBBox;
if (!intersects(bbox, node)) return false;
var nodesToSearch = [],
i, len, child, childBBox;
while (node) {
for (i = 0, len = node.children.length; i < len; i++) {
child = node.children[i];
childBBox = node.leaf ? toBBox(child) : child;
if (intersects(bbox, childBBox)) {
if (node.leaf || contains(bbox, childBBox)) return true;
nodesToSearch.push(child);
}
}
node = nodesToSearch.pop();
}
return false;
},
load: function (data) {
if (!(data && data.length)) return this;
if (data.length < this._minEntries) {
for (var i = 0, len = data.length; i < len; i++) {
this.insert(data[i]);
}
return this;
}
var node = this._build(data.slice(), 0, data.length - 1, 0);
if (!this.data.children.length) {
this.data = node;
} else if (this.data.height === node.height) {
this._splitRoot(this.data, node);
} else {
if (this.data.height < node.height) {
var tmpNode = this.data;
this.data = node;
node = tmpNode;
}
this._insert(node, this.data.height - node.height - 1, true);
}
return this;
},
insert: function (item) {
if (item) this._insert(item, this.data.height - 1);
return this;
},
clear: function () {
this.data = createNode([]);
return this;
},
remove: function (item, equalsFn) {
if (!item) return this;
var node = this.data,
bbox = this.toBBox(item),
path = [],
indexes = [],
i, parent, index, goingUp;
while (node || path.length) {
if (!node) {
node = path.pop();
parent = path[path.length - 1];
i = indexes.pop();
goingUp = true;
}
if (node.leaf) {
index = findItem(item, node.children, equalsFn);
if (index !== -1) {
node.children.splice(index, 1);
path.push(node);
this._condense(path);
return this;
}
}
if (!goingUp && !node.leaf && contains(node, bbox)) {
path.push(node);
indexes.push(i);
i = 0;
parent = node;
node = node.children[0];
} else if (parent) {
i++;
node = parent.children[i];
goingUp = false;
} else node = null;
}
return this;
},
toBBox: function (item) { return item; },
compareMinX: compareNodeMinX,
compareMinY: compareNodeMinY,
toJSON: function () { return this.data; },
fromJSON: function (data) {
this.data = data;
return this;
},
_all: function (node, result) {
var nodesToSearch = [];
while (node) {
if (node.leaf) result.push.apply(result, node.children);
else nodesToSearch.push.apply(nodesToSearch, node.children);
node = nodesToSearch.pop();
}
return result;
},
_build: function (items, left, right, height) {
var N = right - left + 1,
M = this._maxEntries,
node;
if (N <= M) {
node = createNode(items.slice(left, right + 1));
calcBBox(node, this.toBBox);
return node;
}
if (!height) {
height = Math.ceil(Math.log(N) / Math.log(M));
M = Math.ceil(N / Math.pow(M, height - 1));
}
node = createNode([]);
node.leaf = false;
node.height = height;
var N2 = Math.ceil(N / M),
N1 = N2 * Math.ceil(Math.sqrt(M)),
i, j, right2, right3;
multiSelect(items, left, right, N1, this.compareMinX);
for (i = left; i <= right; i += N1) {
right2 = Math.min(i + N1 - 1, right);
multiSelect(items, i, right2, N2, this.compareMinY);
for (j = i; j <= right2; j += N2) {
right3 = Math.min(j + N2 - 1, right2);
node.children.push(this._build(items, j, right3, height - 1));
}
}
calcBBox(node, this.toBBox);
return node;
},
_chooseSubtree: function (bbox, node, level, path) {
var i, len, child, targetNode, area, enlargement, minArea, minEnlargement;
while (true) {
path.push(node);
if (node.leaf || path.length - 1 === level) break;
minArea = minEnlargement = Infinity;
for (i = 0, len = node.children.length; i < len; i++) {
child = node.children[i];
area = bboxArea(child);
enlargement = enlargedArea(bbox, child) - area;
if (enlargement < minEnlargement) {
minEnlargement = enlargement;
minArea = area < minArea ? area : minArea;
targetNode = child;
} else if (enlargement === minEnlargement) {
if (area < minArea) {
minArea = area;
targetNode = child;
}
}
}
node = targetNode || node.children[0];
}
return node;
},
_insert: function (item, level, isNode) {
var toBBox = this.toBBox,
bbox = isNode ? item : toBBox(item),
insertPath = [];
var node = this._chooseSubtree(bbox, this.data, level, insertPath);
node.children.push(item);
extend(node, bbox);
while (level >= 0) {
if (insertPath[level].children.length > this._maxEntries) {
this._split(insertPath, level);
level--;
} else break;
}
this._adjustParentBBoxes(bbox, insertPath, level);
},
_split: function (insertPath, level) {
var node = insertPath[level],
M = node.children.length,
m = this._minEntries;
this._chooseSplitAxis(node, m, M);
var splitIndex = this._chooseSplitIndex(node, m, M);
var newNode = createNode(node.children.splice(splitIndex, node.children.length - splitIndex));
newNode.height = node.height;
newNode.leaf = node.leaf;
calcBBox(node, this.toBBox);
calcBBox(newNode, this.toBBox);
if (level) insertPath[level - 1].children.push(newNode);
else this._splitRoot(node, newNode);
},
_splitRoot: function (node, newNode) {
this.data = createNode([node, newNode]);
this.data.height = node.height + 1;
this.data.leaf = false;
calcBBox(this.data, this.toBBox);
},
_chooseSplitIndex: function (node, m, M) {
var i, bbox1, bbox2, overlap, area, minOverlap, minArea, index;
minOverlap = minArea = Infinity;
for (i = m; i <= M - m; i++) {
bbox1 = distBBox(node, 0, i, this.toBBox);
bbox2 = distBBox(node, i, M, this.toBBox);
overlap = intersectionArea(bbox1, bbox2);
area = bboxArea(bbox1) + bboxArea(bbox2);
if (overlap < minOverlap) {
minOverlap = overlap;
index = i;
minArea = area < minArea ? area : minArea;
} else if (overlap === minOverlap) {
if (area < minArea) {
minArea = area;
index = i;
}
}
}
return index;
},
_chooseSplitAxis: function (node, m, M) {
var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX,
compareMinY = node.leaf ? this.compareMinY : compareNodeMinY,
xMargin = this._allDistMargin(node, m, M, compareMinX),
yMargin = this._allDistMargin(node, m, M, compareMinY);
if (xMargin < yMargin) node.children.sort(compareMinX);
},
_allDistMargin: function (node, m, M, compare) {
node.children.sort(compare);
var toBBox = this.toBBox,
leftBBox = distBBox(node, 0, m, toBBox),
rightBBox = distBBox(node, M - m, M, toBBox),
margin = bboxMargin(leftBBox) + bboxMargin(rightBBox),
i, child;
for (i = m; i < M - m; i++) {
child = node.children[i];
extend(leftBBox, node.leaf ? toBBox(child) : child);
margin += bboxMargin(leftBBox);
}
for (i = M - m - 1; i >= m; i--) {
child = node.children[i];
extend(rightBBox, node.leaf ? toBBox(child) : child);
margin += bboxMargin(rightBBox);
}
return margin;
},
_adjustParentBBoxes: function (bbox, path, level) {
for (var i = level; i >= 0; i--) {
extend(path[i], bbox);
}
},
_condense: function (path) {
for (var i = path.length - 1, siblings; i >= 0; i--) {
if (path[i].children.length === 0) {
if (i > 0) {
siblings = path[i - 1].children;
siblings.splice(siblings.indexOf(path[i]), 1);
} else this.clear();
} else calcBBox(path[i], this.toBBox);
}
},
_initFormat: function (format) {
var compareArr = ['return a', ' - b', ';'];
this.compareMinX = new Function('a', 'b', compareArr.join(format[0]));
this.compareMinY = new Function('a', 'b', compareArr.join(format[1]));
this.toBBox = new Function('a',
'return {minX: a' + format[0] +
', minY: a' + format[1] +
', maxX: a' + format[2] +
', maxY: a' + format[3] + '};');
}
};
function findItem(item, items, equalsFn) {
if (!equalsFn) return items.indexOf(item);
for (var i = 0; i < items.length; i++) {
if (equalsFn(item, items[i])) return i;
}
return -1;
}
function calcBBox(node, toBBox) {
distBBox(node, 0, node.children.length, toBBox, node);
}
function distBBox(node, k, p, toBBox, destNode) {
if (!destNode) destNode = createNode(null);
destNode.minX = Infinity;
destNode.minY = Infinity;
destNode.maxX = -Infinity;
destNode.maxY = -Infinity;
for (var i = k, child; i < p; i++) {
child = node.children[i];
extend(destNode, node.leaf ? toBBox(child) : child);
}
return destNode;
}
function extend(a, b) {
a.minX = Math.min(a.minX, b.minX);
a.minY = Math.min(a.minY, b.minY);
a.maxX = Math.max(a.maxX, b.maxX);
a.maxY = Math.max(a.maxY, b.maxY);
return a;
}
function compareNodeMinX(a, b) { return a.minX - b.minX; }
function compareNodeMinY(a, b) { return a.minY - b.minY; }
function bboxArea(a) { return (a.maxX - a.minX) * (a.maxY - a.minY); }
function bboxMargin(a) { return (a.maxX - a.minX) + (a.maxY - a.minY); }
function enlargedArea(a, b) {
return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) *
(Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));
}
function intersectionArea(a, b) {
var minX = Math.max(a.minX, b.minX),
minY = Math.max(a.minY, b.minY),
maxX = Math.min(a.maxX, b.maxX),
maxY = Math.min(a.maxY, b.maxY);
return Math.max(0, maxX - minX) *
Math.max(0, maxY - minY);
}
function contains(a, b) {
return a.minX <= b.minX &&
a.minY <= b.minY &&
b.maxX <= a.maxX &&
b.maxY <= a.maxY;
}
function intersects(a, b) {
return b.minX <= a.maxX &&
b.minY <= a.maxY &&
b.maxX >= a.minX &&
b.maxY >= a.minY;
}
function createNode(children) {
return {
children: children,
height: 1,
leaf: true,
minX: Infinity,
minY: Infinity,
maxX: -Infinity,
maxY: -Infinity
};
}
function multiSelect(arr, left, right, n, compare) {
var stack = [left, right],
mid;
while (stack.length) {
right = stack.pop();
left = stack.pop();
if (right - left <= n) continue;
mid = left + Math.ceil((right - left) / n / 2) * n;
quickselect_1(arr, mid, left, right, compare);
stack.push(left, mid, mid, right);
}
}
exports['default'] = rbush_1;
}((this.rbush = this.rbush || {})));}).call(ol.ext);
ol.ext.rbush = ol.ext.rbush.default;
ol.render = {};
/**
* Context for drawing geometries. A vector context is available on render
* events and does not need to be constructed directly.
* @constructor
* @abstract
* @struct
* @api
*/
ol.render.VectorContext = function() {
};
ol.render.VectorContext.prototype.drawCustom = function(geometry, feature, renderer) {};
ol.render.VectorContext.prototype.drawGeometry = function(geometry) {};
ol.render.VectorContext.prototype.setStyle = function(style) {};
ol.render.VectorContext.prototype.drawCircle = function(circleGeometry, feature) {};
ol.render.VectorContext.prototype.drawFeature = function(feature, style) {};
ol.render.VectorContext.prototype.drawGeometryCollection = function(geometryCollectionGeometry, feature) {};
ol.render.VectorContext.prototype.drawLineString = function(lineStringGeometry, feature) {};
ol.render.VectorContext.prototype.drawMultiLineString = function(multiLineStringGeometry, feature) {};
ol.render.VectorContext.prototype.drawMultiPoint = function(multiPointGeometry, feature) {};
ol.render.VectorContext.prototype.drawMultiPolygon = function(multiPolygonGeometry, feature) {};
ol.render.VectorContext.prototype.drawPoint = function(pointGeometry, feature) {};
ol.render.VectorContext.prototype.drawPolygon = function(polygonGeometry, feature) {};
ol.render.VectorContext.prototype.drawText = function(geometry, feature) {};
ol.render.VectorContext.prototype.setFillStrokeStyle = function(fillStyle, strokeStyle) {};
ol.render.VectorContext.prototype.setImageStyle = function(imageStyle, opt_declutterGroup) {};
ol.render.VectorContext.prototype.setTextStyle = function(textStyle, opt_declutterGroup) {};
ol.render.ReplayGroup = {};
ol.render.ReplayGroup = function() {};
ol.render.ReplayGroup.prototype.getReplay = function(zIndex, replayType) {};
ol.render.ReplayGroup.prototype.isEmpty = function() {};
ol.render.ReplayType = {
CIRCLE: 'Circle',
DEFAULT: 'Default',
IMAGE: 'Image',
LINE_STRING: 'LineString',
POLYGON: 'Polygon',
TEXT: 'Text'
};
ol.geom.flat.length = {};
ol.geom.flat.length.lineString = function(flatCoordinates, offset, end, stride) {
var x1 = flatCoordinates[offset];
var y1 = flatCoordinates[offset + 1];
var length = 0;
var i;
for (i = offset + stride; i < end; i += stride) {
var x2 = flatCoordinates[i];
var y2 = flatCoordinates[i + 1];
length += Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
x1 = x2;
y1 = y2;
}
return length;
};
ol.geom.flat.length.linearRing = function(flatCoordinates, offset, end, stride) {
var perimeter =
ol.geom.flat.length.lineString(flatCoordinates, offset, end, stride);
var dx = flatCoordinates[end - stride] - flatCoordinates[offset];
var dy = flatCoordinates[end - stride + 1] - flatCoordinates[offset + 1];
perimeter += Math.sqrt(dx * dx + dy * dy);
return perimeter;
};
ol.geom.flat.textpath = {};
ol.geom.flat.textpath.lineString = function(
flatCoordinates, offset, end, stride, text, measure, startM, maxAngle) {
var result = [];
// Keep text upright
var reverse = flatCoordinates[offset] > flatCoordinates[end - stride];
var numChars = text.length;
var x1 = flatCoordinates[offset];
var y1 = flatCoordinates[offset + 1];
offset += stride;
var x2 = flatCoordinates[offset];
var y2 = flatCoordinates[offset + 1];
var segmentM = 0;
var segmentLength = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));
var chunk = '';
var chunkLength = 0;
var data, index, previousAngle;
for (var i = 0; i < numChars; ++i) {
index = reverse ? numChars - i - 1 : i;
var char = text.charAt(index);
chunk = reverse ? char + chunk : chunk + char;
var charLength = measure(chunk) - chunkLength;
chunkLength += charLength;
var charM = startM + charLength / 2;
while (offset < end - stride && segmentM + segmentLength < charM) {
x1 = x2;
y1 = y2;
offset += stride;
x2 = flatCoordinates[offset];
y2 = flatCoordinates[offset + 1];
segmentM += segmentLength;
segmentLength = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));
}
var segmentPos = charM - segmentM;
var angle = Math.atan2(y2 - y1, x2 - x1);
if (reverse) {
angle += angle > 0 ? -Math.PI : Math.PI;
}
if (previousAngle !== undefined) {
var delta = angle - previousAngle;
delta += (delta > Math.PI) ? -2 * Math.PI : (delta < -Math.PI) ? 2 * Math.PI : 0;
if (Math.abs(delta) > maxAngle) {
return null;
}
}
var interpolate = segmentPos / segmentLength;
var x = ol.math.lerp(x1, x2, interpolate);
var y = ol.math.lerp(y1, y2, interpolate);
if (previousAngle == angle) {
if (reverse) {
data[0] = x;
data[1] = y;
data[2] = charLength / 2;
}
data[4] = chunk;
} else {
chunk = char;
chunkLength = charLength;
data = [x, y, charLength / 2, angle, chunk];
if (reverse) {
result.unshift(data);
} else {
result.push(data);
}
previousAngle = angle;
}
startM += charLength;
}
return result;
};
ol.structs.LRUCache = function(opt_highWaterMark) {
ol.events.EventTarget.call(this);
this.highWaterMark = opt_highWaterMark !== undefined ? opt_highWaterMark : 2048;
this.count_ = 0;
this.entries_ = {};
this.oldest_ = null;
this.newest_ = null;
};
ol.inherits(ol.structs.LRUCache, ol.events.EventTarget);
ol.structs.LRUCache.prototype.canExpireCache = function() {
return this.getCount() > this.highWaterMark;
};
ol.structs.LRUCache.prototype.clear = function() {
this.count_ = 0;
this.entries_ = {};
this.oldest_ = null;
this.newest_ = null;
this.dispatchEvent(ol.events.EventType.CLEAR);
};
ol.structs.LRUCache.prototype.containsKey = function(key) {
return this.entries_.hasOwnProperty(key);
};
ol.structs.LRUCache.prototype.forEach = function(f, opt_this) {
var entry = this.oldest_;
while (entry) {
f.call(opt_this, entry.value_, entry.key_, this);
entry = entry.newer;
}
};
ol.structs.LRUCache.prototype.get = function(key) {
var entry = this.entries_[key];
ol.asserts.assert(entry !== undefined,
15); // Tried to get a value for a key that does not exist in the cache
if (entry === this.newest_) {
return entry.value_;
} else if (entry === this.oldest_) {
this.oldest_ = /** @type {ol.LRUCacheEntry} */ (this.oldest_.newer);
this.oldest_.older = null;
} else {
entry.newer.older = entry.older;
entry.older.newer = entry.newer;
}
entry.newer = null;
entry.older = this.newest_;
this.newest_.newer = entry;
this.newest_ = entry;
return entry.value_;
};
ol.structs.LRUCache.prototype.remove = function(key) {
var entry = this.entries_[key];
ol.asserts.assert(entry !== undefined, 15); // Tried to get a value for a key that does not exist in the cache
if (entry === this.newest_) {
this.newest_ = /** @type {ol.LRUCacheEntry} */ (entry.older);
if (this.newest_) {
this.newest_.newer = null;
}
} else if (entry === this.oldest_) {
this.oldest_ = /** @type {ol.LRUCacheEntry} */ (entry.newer);
if (this.oldest_) {
this.oldest_.older = null;
}
} else {
entry.newer.older = entry.older;
entry.older.newer = entry.newer;
}
delete this.entries_[key];
--this.count_;
return entry.value_;
};
ol.structs.LRUCache.prototype.getCount = function() {
return this.count_;
};
ol.structs.LRUCache.prototype.getKeys = function() {
var keys = new Array(this.count_);
var i = 0;
var entry;
for (entry = this.newest_; entry; entry = entry.older) {
keys[i++] = entry.key_;
}
return keys;
};
ol.structs.LRUCache.prototype.getValues = function() {
var values = new Array(this.count_);
var i = 0;
var entry;
for (entry = this.newest_; entry; entry = entry.older) {
values[i++] = entry.value_;
}
return values;
};
ol.structs.LRUCache.prototype.peekLast = function() {
return this.oldest_.value_;
};
ol.structs.LRUCache.prototype.peekLastKey = function() {
return this.oldest_.key_;
};
ol.structs.LRUCache.prototype.peekFirstKey = function() {
return this.newest_.key_;
};
ol.structs.LRUCache.prototype.pop = function() {
var entry = this.oldest_;
delete this.entries_[entry.key_];
if (entry.newer) {
entry.newer.older = null;
}
this.oldest_ = /** @type {ol.LRUCacheEntry} */ (entry.newer);
if (!this.oldest_) {
this.newest_ = null;
}
--this.count_;
return entry.value_;
};
ol.structs.LRUCache.prototype.replace = function(key, value) {
this.get(key); // update `newest_`
this.entries_[key].value_ = value;
};
ol.structs.LRUCache.prototype.set = function(key, value) {
ol.asserts.assert(!(key in this.entries_),
16); // Tried to set a value for a key that is used already
var entry = /** @type {ol.LRUCacheEntry} */ ({
key_: key,
newer: null,
older: this.newest_,
value_: value
});
if (!this.newest_) {
this.oldest_ = entry;
} else {
this.newest_.newer = entry;
}
this.newest_ = entry;
this.entries_[key] = entry;
++this.count_;
};
ol.structs.LRUCache.prototype.prune = function() {
while (this.canExpireCache()) {
this.pop();
}
};
ol.render.canvas = {};
ol.render.canvas.defaultFont = '10px sans-serif';
ol.render.canvas.defaultFillStyle = [0, 0, 0, 1];
ol.render.canvas.defaultLineCap = 'round';
ol.render.canvas.defaultLineDash = [];
ol.render.canvas.defaultLineDashOffset = 0;
ol.render.canvas.defaultLineJoin = 'round';
ol.render.canvas.defaultMiterLimit = 10;
ol.render.canvas.defaultStrokeStyle = [0, 0, 0, 1];
ol.render.canvas.defaultTextAlign = 'center';
ol.render.canvas.defaultTextBaseline = 'middle';
ol.render.canvas.defaultPadding = [0, 0, 0, 0];
ol.render.canvas.defaultLineWidth = 1;
ol.render.canvas.labelCache = new ol.structs.LRUCache();
ol.render.canvas.checkedFonts_ = {};
ol.render.canvas.measureContext_ = null;
ol.render.canvas.textHeights_ = {};
/**
* Clears the label cache when a font becomes available.
* @param {string} fontSpec CSS font spec.
*/
ol.render.canvas.checkFont = (function() {
var retries = 60;
var checked = ol.render.canvas.checkedFonts_;
var labelCache = ol.render.canvas.labelCache;
var font = '32px monospace';
var text = 'wmytzilWMYTZIL@#/&?$%10';
var interval, referenceWidth;
function isAvailable(fontFamily) {
var context = ol.render.canvas.getMeasureContext();
context.font = font;
referenceWidth = context.measureText(text).width;
var available = true;
if (fontFamily != 'monospace') {
context.font = '32px ' + fontFamily + ',monospace';
var width = context.measureText(text).width;
// If width and referenceWidth are the same, then the 'monospace'
// fallback was used instead of the font we wanted, so the font is not
// available.
available = width != referenceWidth;
}
return available;
}
function check() {
var done = true;
for (var font in checked) {
if (checked[font] < retries) {
if (isAvailable(font)) {
checked[font] = retries;
ol.obj.clear(ol.render.canvas.textHeights_);
// Make sure that loaded fonts are picked up by Safari
ol.render.canvas.measureContext_ = null;
labelCache.clear();
} else {
++checked[font];
done = false;
}
}
}
if (done) {
window.clearInterval(interval);
interval = undefined;
}
}
return function(fontSpec) {
var fontFamilies = ol.css.getFontFamilies(fontSpec);
if (!fontFamilies) {
return;
}
for (var i = 0, ii = fontFamilies.length; i < ii; ++i) {
var fontFamily = fontFamilies[i];
if (!(fontFamily in checked)) {
checked[fontFamily] = retries;
if (!isAvailable(fontFamily)) {
checked[fontFamily] = 0;
if (interval === undefined) {
interval = window.setInterval(check, 32);
}
}
}
}
};
})();
/**
* @return {CanvasRenderingContext2D} Measure context.
*/
ol.render.canvas.getMeasureContext = function() {
var context = ol.render.canvas.measureContext_;
if (!context) {
context = ol.render.canvas.measureContext_ = ol.dom.createCanvasContext2D(1, 1);
}
return context;
};
/**
* @param {string} font Font to use for measuring.
* @return {ol.Size} Measurement.
*/
ol.render.canvas.measureTextHeight = (function() {
var heights = ol.render.canvas.textHeights_;
return function(font) {
var height = heights[font];
if (height == undefined) {
// if (!span) {
// span = document.createElement('span');
// span.textContent = 'M';
// span.style.margin = span.style.padding = '0 !important';
// span.style.position = 'absolute !important';
// span.style.left = '-99999px !important';
// }
// span.style.font = font;
// document.body.appendChild(span);
// height = heights[font] = span.offsetHeight;
// document.body.removeChild(span);
height = heights[font] = 19; // FIXME sunyl
}
return height;
};
})();
/**
* @param {string} font Font.
* @param {string} text Text.
* @return {number} Width.
*/
ol.render.canvas.measureTextWidth = function(font, text) {
var measureContext = ol.render.canvas.getMeasureContext();
if (font != measureContext.font) {
measureContext.font = font;
}
return measureContext.measureText(text).width;
};
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {number} rotation Rotation.
* @param {number} offsetX X offset.
* @param {number} offsetY Y offset.
*/
ol.render.canvas.rotateAtOffset = function(context, rotation, offsetX, offsetY) {
if (rotation !== 0) {
context.translate(offsetX, offsetY);
context.rotate(rotation);
context.translate(-offsetX, -offsetY);
}
};
ol.render.canvas.resetTransform_ = ol.transform.create();
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Transform|null} transform Transform.
* @param {number} opacity Opacity.
* @param {HTMLImageElement|HTMLCanvasElement|HTMLVideoElement} image Image.
* @param {number} originX Origin X.
* @param {number} originY Origin Y.
* @param {number} w Width.
* @param {number} h Height.
* @param {number} x X.
* @param {number} y Y.
* @param {number} scale Scale.
*/
ol.render.canvas.drawImage = function(context,
transform, opacity, image, originX, originY, w, h, x, y, scale) {
var alpha;
if (opacity != 1) {
alpha = context.globalAlpha;
context.globalAlpha = alpha * opacity;
}
if (transform) {
context.setTransform.apply(context, transform);
}
context.drawImage(image, originX, originY, w, h, x, y, w * scale, h * scale);
if (alpha) {
context.globalAlpha = alpha;
}
if (transform) {
context.setTransform.apply(context, ol.render.canvas.resetTransform_);
}
};
/**
* @enum {number}
*/
ol.render.canvas.Instruction = {
BEGIN_GEOMETRY: 0,
BEGIN_PATH: 1,
CIRCLE: 2,
CLOSE_PATH: 3,
CUSTOM: 4,
DRAW_CHARS: 5,
DRAW_IMAGE: 6,
END_GEOMETRY: 7,
FILL: 8,
MOVE_TO_LINE_TO: 9,
SET_FILL_STYLE: 10,
SET_STROKE_STYLE: 11,
STROKE: 12
};
ol.render.replay = {};
ol.render.replay.ORDER = [
ol.render.ReplayType.POLYGON,
ol.render.ReplayType.CIRCLE,
ol.render.ReplayType.LINE_STRING,
ol.render.ReplayType.IMAGE,
ol.render.ReplayType.TEXT,
ol.render.ReplayType.DEFAULT
];
ol.render.replay.TEXT_ALIGN = {};
ol.render.replay.TEXT_ALIGN['left'] = 0;
ol.render.replay.TEXT_ALIGN['end'] = 0;
ol.render.replay.TEXT_ALIGN['center'] = 0.5;
ol.render.replay.TEXT_ALIGN['right'] = 1;
ol.render.replay.TEXT_ALIGN['start'] = 1;
ol.render.replay.TEXT_ALIGN['top'] = 0;
ol.render.replay.TEXT_ALIGN['middle'] = 0.5;
ol.render.replay.TEXT_ALIGN['hanging'] = 0.2;
ol.render.replay.TEXT_ALIGN['alphabetic'] = 0.8;
ol.render.replay.TEXT_ALIGN['ideographic'] = 0.8;
ol.render.replay.TEXT_ALIGN['bottom'] = 1;
ol.render.canvas.Replay = function(tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {
ol.render.VectorContext.call(this);
/**
* @type {?}
*/
this.declutterTree = declutterTree;
/**
* @private
* @type {ol.Extent}
*/
this.tmpExtent_ = ol.extent.createEmpty();
/**
* @protected
* @type {number}
*/
this.tolerance = tolerance;
/**
* @protected
* @const
* @type {ol.Extent}
*/
this.maxExtent = maxExtent;
/**
* @protected
* @type {boolean}
*/
this.overlaps = overlaps;
/**
* @protected
* @type {number}
*/
this.pixelRatio = pixelRatio;
/**
* @protected
* @type {number}
*/
this.maxLineWidth = 0;
/**
* @protected
* @const
* @type {number}
*/
this.resolution = resolution;
/**
* @private
* @type {ol.Coordinate}
*/
this.fillOrigin_;
/**
* @private
* @type {Array.<*>}
*/
this.beginGeometryInstruction1_ = null;
/**
* @private
* @type {Array.<*>}
*/
this.beginGeometryInstruction2_ = null;
/**
* @private
* @type {ol.Extent}
*/
this.bufferedMaxExtent_ = null;
/**
* @protected
* @type {Array.<*>}
*/
this.instructions = [];
/**
* @protected
* @type {Array.<number>}
*/
this.coordinates = [];
/**
* @private
* @type {Object.<number,ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>>}
*/
this.coordinateCache_ = {};
/**
* @private
* @type {!ol.Transform}
*/
this.renderedTransform_ = ol.transform.create();
/**
* @protected
* @type {Array.<*>}
*/
this.hitDetectionInstructions = [];
/**
* @private
* @type {Array.<number>}
*/
this.pixelCoordinates_ = null;
/**
* @protected
* @type {ol.CanvasFillStrokeState}
*/
this.state = /** @type {ol.CanvasFillStrokeState} */ ({});
/**
* @private
* @type {number}
*/
this.viewRotation_ = 0;
/**
* @private
* @type {!ol.Transform}
*/
this.tmpLocalTransform_ = ol.transform.create();
/**
* @private
* @type {!ol.Transform}
*/
this.resetTransform_ = ol.transform.create();
};
ol.inherits(ol.render.canvas.Replay, ol.render.VectorContext);
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Coordinate} p1 1st point of the background box.
* @param {ol.Coordinate} p2 2nd point of the background box.
* @param {ol.Coordinate} p3 3rd point of the background box.
* @param {ol.Coordinate} p4 4th point of the background box.
* @param {Array.<*>} fillInstruction Fill instruction.
* @param {Array.<*>} strokeInstruction Stroke instruction.
*/
ol.render.canvas.Replay.prototype.replayTextBackground_ = function(context, p1, p2, p3, p4,
fillInstruction, strokeInstruction) {
context.beginPath();
context.moveTo.apply(context, p1);
context.lineTo.apply(context, p2);
context.lineTo.apply(context, p3);
context.lineTo.apply(context, p4);
context.lineTo.apply(context, p1);
if (fillInstruction) {
this.fillOrigin_ = /** @type {Array.<number>} */ (fillInstruction[2]);
this.fill_(context);
}
if (strokeInstruction) {
this.setStrokeStyle_(context, /** @type {Array.<*>} */ (strokeInstruction));
context.stroke();
}
};
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {number} x X.
* @param {number} y Y.
* @param {HTMLImageElement|HTMLCanvasElement|HTMLVideoElement} image Image.
* @param {number} anchorX Anchor X.
* @param {number} anchorY Anchor Y.
* @param {ol.DeclutterGroup} declutterGroup Declutter group.
* @param {number} height Height.
* @param {number} opacity Opacity.
* @param {number} originX Origin X.
* @param {number} originY Origin Y.
* @param {number} rotation Rotation.
* @param {number} scale Scale.
* @param {boolean} snapToPixel Snap to pixel.
* @param {number} width Width.
* @param {Array.<number>} padding Padding.
* @param {Array.<*>} fillInstruction Fill instruction.
* @param {Array.<*>} strokeInstruction Stroke instruction.
*/
ol.render.canvas.Replay.prototype.replayImage_ = function(context, x, y, image,
anchorX, anchorY, declutterGroup, height, opacity, originX, originY,
rotation, scale, snapToPixel, width, padding, fillInstruction, strokeInstruction) {
var fillStroke = fillInstruction || strokeInstruction;
var localTransform = this.tmpLocalTransform_;
anchorX *= scale;
anchorY *= scale;
x -= anchorX;
y -= anchorY;
if (snapToPixel) {
x = Math.round(x);
y = Math.round(y);
}
var w = (width + originX > image.width) ? image.width - originX : width;
var h = (height + originY > image.height) ? image.height - originY : height;
var box = this.tmpExtent_;
var boxW = padding[3] + w * scale + padding[1];
var boxH = padding[0] + h * scale + padding[2];
var boxX = x - padding[3];
var boxY = y - padding[0];
/** @type {ol.Coordinate} */
var p1;
/** @type {ol.Coordinate} */
var p2;
/** @type {ol.Coordinate} */
var p3;
/** @type {ol.Coordinate} */
var p4;
if (fillStroke || rotation !== 0) {
p1 = [boxX, boxY];
p2 = [boxX + boxW, boxY];
p3 = [boxX + boxW, boxY + boxH];
p4 = [boxX, boxY + boxH];
}
var transform = null;
if (rotation !== 0) {
var centerX = x + anchorX;
var centerY = y + anchorY;
transform = ol.transform.compose(localTransform,
centerX, centerY, 1, 1, rotation, -centerX, -centerY);
ol.extent.createOrUpdateEmpty(box);
ol.extent.extendCoordinate(box, ol.transform.apply(localTransform, p1));
ol.extent.extendCoordinate(box, ol.transform.apply(localTransform, p2));
ol.extent.extendCoordinate(box, ol.transform.apply(localTransform, p3));
ol.extent.extendCoordinate(box, ol.transform.apply(localTransform, p4));
} else {
ol.extent.createOrUpdate(boxX, boxY, boxX + boxW, boxY + boxH, box);
}
var canvas = context.canvas;
var intersects = box[0] <= canvas.width && box[2] >= 0 && box[1] <= canvas.height && box[3] >= 0;
if (declutterGroup) {
if (!intersects && declutterGroup[4] == 1) {
return;
}
ol.extent.extend(declutterGroup, box);
var declutterArgs = intersects ?
[context, transform ? transform.slice(0) : null, opacity, image, originX, originY, w, h, x, y, scale] :
null;
if (declutterArgs && fillStroke) {
declutterArgs.push(fillInstruction, strokeInstruction, p1, p2, p3, p4);
}
declutterGroup.push(declutterArgs);
} else if (intersects) {
if (fillStroke) {
this.replayTextBackground_(context, p1, p2, p3, p4,
/** @type {Array.<*>} */ (fillInstruction),
/** @type {Array.<*>} */ (strokeInstruction));
}
ol.render.canvas.drawImage(context, transform, opacity, image, originX, originY, w, h, x, y, scale);
}
};
/**
* @protected
* @param {Array.<number>} dashArray Dash array.
* @return {Array.<number>} Dash array with pixel ratio applied
*/
ol.render.canvas.Replay.prototype.applyPixelRatio = function(dashArray) {
var pixelRatio = this.pixelRatio;
return pixelRatio == 1 ? dashArray : dashArray.map(function(dash) {
return dash * pixelRatio;
});
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @param {boolean} closed Last input coordinate equals first.
* @param {boolean} skipFirst Skip first coordinate.
* @protected
* @return {number} My end.
*/
ol.render.canvas.Replay.prototype.appendFlatCoordinates = function(flatCoordinates, offset, end, stride, closed, skipFirst) {
var myEnd = this.coordinates.length;
var extent = this.getBufferedMaxExtent();
if (skipFirst) {
offset += stride;
}
var lastCoord = [flatCoordinates[offset], flatCoordinates[offset + 1]];
var nextCoord = [NaN, NaN];
var skipped = true;
var i, lastRel, nextRel;
for (i = offset + stride; i < end; i += stride) {
nextCoord[0] = flatCoordinates[i];
nextCoord[1] = flatCoordinates[i + 1];
nextRel = ol.extent.coordinateRelationship(extent, nextCoord);
if (nextRel !== lastRel) {
if (skipped) {
this.coordinates[myEnd++] = lastCoord[0];
this.coordinates[myEnd++] = lastCoord[1];
}
this.coordinates[myEnd++] = nextCoord[0];
this.coordinates[myEnd++] = nextCoord[1];
skipped = false;
} else if (nextRel === ol.extent.Relationship.INTERSECTING) {
this.coordinates[myEnd++] = nextCoord[0];
this.coordinates[myEnd++] = nextCoord[1];
skipped = false;
} else {
skipped = true;
}
lastCoord[0] = nextCoord[0];
lastCoord[1] = nextCoord[1];
lastRel = nextRel;
}
// Last coordinate equals first or only one point to append:
if ((closed && skipped) || i === offset + stride) {
this.coordinates[myEnd++] = lastCoord[0];
this.coordinates[myEnd++] = lastCoord[1];
}
return myEnd;
};
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<number>} ends Ends.
* @param {number} stride Stride.
* @param {Array.<number>} replayEnds Replay ends.
* @return {number} Offset.
*/
ol.render.canvas.Replay.prototype.drawCustomCoordinates_ = function(flatCoordinates, offset, ends, stride, replayEnds) {
for (var i = 0, ii = ends.length; i < ii; ++i) {
var end = ends[i];
var replayEnd = this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false, false);
replayEnds.push(replayEnd);
offset = end;
}
return offset;
};
/**
* @inheritDoc.
*/
ol.render.canvas.Replay.prototype.drawCustom = function(geometry, feature, renderer) {
this.beginGeometry(geometry, feature);
var type = geometry.getType();
var stride = geometry.getStride();
var replayBegin = this.coordinates.length;
var flatCoordinates, replayEnd, replayEnds, replayEndss;
var offset;
if (type == ol.geom.GeometryType.MULTI_POLYGON) {
geometry = /** @type {ol.geom.MultiPolygon} */ (geometry);
flatCoordinates = geometry.getOrientedFlatCoordinates();
replayEndss = [];
var endss = geometry.getEndss();
offset = 0;
for (var i = 0, ii = endss.length; i < ii; ++i) {
var myEnds = [];
offset = this.drawCustomCoordinates_(flatCoordinates, offset, endss[i], stride, myEnds);
replayEndss.push(myEnds);
}
this.instructions.push([ol.render.canvas.Instruction.CUSTOM,
replayBegin, replayEndss, geometry, renderer, ol.geom.flat.inflate.coordinatesss]);
} else if (type == ol.geom.GeometryType.POLYGON || type == ol.geom.GeometryType.MULTI_LINE_STRING) {
replayEnds = [];
flatCoordinates = (type == ol.geom.GeometryType.POLYGON) ?
/** @type {ol.geom.Polygon} */ (geometry).getOrientedFlatCoordinates() :
geometry.getFlatCoordinates();
offset = this.drawCustomCoordinates_(flatCoordinates, 0,
/** @type {ol.geom.Polygon|ol.geom.MultiLineString} */ (geometry).getEnds(),
stride, replayEnds);
this.instructions.push([ol.render.canvas.Instruction.CUSTOM,
replayBegin, replayEnds, geometry, renderer, ol.geom.flat.inflate.coordinatess]);
} else if (type == ol.geom.GeometryType.LINE_STRING || type == ol.geom.GeometryType.MULTI_POINT) {
flatCoordinates = geometry.getFlatCoordinates();
replayEnd = this.appendFlatCoordinates(
flatCoordinates, 0, flatCoordinates.length, stride, false, false);
this.instructions.push([ol.render.canvas.Instruction.CUSTOM,
replayBegin, replayEnd, geometry, renderer, ol.geom.flat.inflate.coordinates]);
} else if (type == ol.geom.GeometryType.POINT) {
flatCoordinates = geometry.getFlatCoordinates();
this.coordinates.push(flatCoordinates[0], flatCoordinates[1]);
replayEnd = this.coordinates.length;
this.instructions.push([ol.render.canvas.Instruction.CUSTOM,
replayBegin, replayEnd, geometry, renderer]);
}
this.endGeometry(geometry, feature);
};
/**
* @protected
* @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
* @param {ol.Feature|ol.render.Feature} feature Feature.
*/
ol.render.canvas.Replay.prototype.beginGeometry = function(geometry, feature) {
this.beginGeometryInstruction1_ =
[ol.render.canvas.Instruction.BEGIN_GEOMETRY, feature, 0];
this.instructions.push(this.beginGeometryInstruction1_);
this.beginGeometryInstruction2_ =
[ol.render.canvas.Instruction.BEGIN_GEOMETRY, feature, 0];
this.hitDetectionInstructions.push(this.beginGeometryInstruction2_);
};
/**
* @private
* @param {CanvasRenderingContext2D} context Context.
*/
ol.render.canvas.Replay.prototype.fill_ = function(context) {
if (this.fillOrigin_) {
var origin = ol.transform.apply(this.renderedTransform_, this.fillOrigin_.slice());
context.translate(origin[0], origin[1]);
context.rotate(this.viewRotation_);
}
context.fill();
if (this.fillOrigin_) {
context.setTransform.apply(context, ol.render.canvas.resetTransform_);
}
};
/**
* @private
* @param {CanvasRenderingContext2D} context Context.
* @param {Array.<*>} instruction Instruction.
*/
ol.render.canvas.Replay.prototype.setStrokeStyle_ = function(context, instruction) {
context.strokeStyle = /** @type {ol.ColorLike} */ (instruction[1]);
context.lineWidth = /** @type {number} */ (instruction[2]);
context.lineCap = /** @type {string} */ (instruction[3]);
context.lineJoin = /** @type {string} */ (instruction[4]);
context.miterLimit = /** @type {number} */ (instruction[5]);
if (ol.has.CANVAS_LINE_DASH) {
context.lineDashOffset = /** @type {number} */ (instruction[7]);
context.setLineDash(/** @type {Array.<number>} */ (instruction[6]));
}
};
/**
* @param {ol.DeclutterGroup} declutterGroup Declutter group.
* @param {ol.Feature|ol.render.Feature} feature Feature.
*/
ol.render.canvas.Replay.prototype.renderDeclutter_ = function(declutterGroup, feature) {
if (declutterGroup && declutterGroup.length > 5) {
var groupCount = declutterGroup[4];
if (groupCount == 1 || groupCount == declutterGroup.length - 5) {
/** @type {ol.RBushEntry} */
var box = {
minX: /** @type {number} */ (declutterGroup[0]),
minY: /** @type {number} */ (declutterGroup[1]),
maxX: /** @type {number} */ (declutterGroup[2]),
maxY: /** @type {number} */ (declutterGroup[3]),
value: feature
};
if (!this.declutterTree.collides(box)) {
this.declutterTree.insert(box);
var drawImage = ol.render.canvas.drawImage;
for (var j = 5, jj = declutterGroup.length; j < jj; ++j) {
var declutterData = /** @type {Array} */ (declutterGroup[j]);
if (declutterData) {
if (declutterData.length > 11) {
this.replayTextBackground_(declutterData[0],
declutterData[13], declutterData[14], declutterData[15], declutterData[16],
declutterData[11], declutterData[12]);
}
drawImage.apply(undefined, declutterData);
}
}
}
declutterGroup.length = 5;
ol.extent.createOrUpdateEmpty(declutterGroup);
}
}
};
/**
* @private
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Transform} transform Transform.
* @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
* to skip.
* @param {Array.<*>} instructions Instructions array.
* @param {function((ol.Feature|ol.render.Feature)): T|undefined}
* featureCallback Feature callback.
* @param {ol.Extent=} opt_hitExtent Only check features that intersect this
* extent.
* @return {T|undefined} Callback result.
* @template T
*/
ol.render.canvas.Replay.prototype.replay_ = function(
context, transform, skippedFeaturesHash,
instructions, featureCallback, opt_hitExtent) {
/** @type {Array.<number>} */
var pixelCoordinates;
if (this.pixelCoordinates_ && ol.array.equals(transform, this.renderedTransform_)) {
pixelCoordinates = this.pixelCoordinates_;
} else {
if (!this.pixelCoordinates_) {
this.pixelCoordinates_ = [];
}
pixelCoordinates = ol.geom.flat.transform.transform2D(
this.coordinates, 0, this.coordinates.length, 2,
transform, this.pixelCoordinates_);
ol.transform.setFromArray(this.renderedTransform_, transform);
}
var skipFeatures = !ol.obj.isEmpty(skippedFeaturesHash);
var i = 0; // instruction index
var ii = instructions.length; // end of instructions
var d = 0; // data index
var dd; // end of per-instruction data
var anchorX, anchorY, prevX, prevY, roundX, roundY, declutterGroup, image;
var pendingFill = 0;
var pendingStroke = 0;
var lastFillInstruction = null;
var lastStrokeInstruction = null;
var coordinateCache = this.coordinateCache_;
var viewRotation = this.viewRotation_;
var state = /** @type {olx.render.State} */ ({
context: context,
pixelRatio: this.pixelRatio,
resolution: this.resolution,
rotation: viewRotation
});
// When the batch size gets too big, performance decreases. 200 is a good
// balance between batch size and number of fill/stroke instructions.
var batchSize =
this.instructions != instructions || this.overlaps ? 0 : 200;
while (i < ii) {
var instruction = instructions[i];
var type = /** @type {ol.render.canvas.Instruction} */ (instruction[0]);
var /** @type {ol.Feature|ol.render.Feature} */ feature, x, y;
switch (type) {
case ol.render.canvas.Instruction.BEGIN_GEOMETRY:
feature = /** @type {ol.Feature|ol.render.Feature} */ (instruction[1]);
if ((skipFeatures &&
skippedFeaturesHash[ol.getUid(feature).toString()]) ||
!feature.getGeometry()) {
i = /** @type {number} */ (instruction[2]);
} else if (opt_hitExtent !== undefined && !ol.extent.intersects(
opt_hitExtent, feature.getGeometry().getExtent())) {
i = /** @type {number} */ (instruction[2]) + 1;
} else {
++i;
}
break;
case ol.render.canvas.Instruction.BEGIN_PATH:
if (pendingFill > batchSize) {
this.fill_(context);
pendingFill = 0;
}
if (pendingStroke > batchSize) {
context.stroke();
pendingStroke = 0;
}
if (!pendingFill && !pendingStroke) {
context.beginPath();
prevX = prevY = NaN;
}
++i;
break;
case ol.render.canvas.Instruction.CIRCLE:
d = /** @type {number} */ (instruction[1]);
var x1 = pixelCoordinates[d];
var y1 = pixelCoordinates[d + 1];
var x2 = pixelCoordinates[d + 2];
var y2 = pixelCoordinates[d + 3];
var dx = x2 - x1;
var dy = y2 - y1;
var r = Math.sqrt(dx * dx + dy * dy);
context.moveTo(x1 + r, y1);
context.arc(x1, y1, r, 0, 2 * Math.PI, true);
++i;
break;
case ol.render.canvas.Instruction.CLOSE_PATH:
context.closePath();
++i;
break;
case ol.render.canvas.Instruction.CUSTOM:
d = /** @type {number} */ (instruction[1]);
dd = instruction[2];
var geometry = /** @type {ol.geom.SimpleGeometry} */ (instruction[3]);
var renderer = instruction[4];
var fn = instruction.length == 6 ? instruction[5] : undefined;
state.geometry = geometry;
state.feature = feature;
if (!(i in coordinateCache)) {
coordinateCache[i] = [];
}
var coords = coordinateCache[i];
if (fn) {
fn(pixelCoordinates, d, dd, 2, coords);
} else {
coords[0] = pixelCoordinates[d];
coords[1] = pixelCoordinates[d + 1];
coords.length = 2;
}
renderer(coords, state);
++i;
break;
case ol.render.canvas.Instruction.DRAW_IMAGE:
d = /** @type {number} */ (instruction[1]);
dd = /** @type {number} */ (instruction[2]);
image = /** @type {HTMLCanvasElement|HTMLVideoElement|Image} */
(instruction[3]);
// Remaining arguments in DRAW_IMAGE are in alphabetical order
anchorX = /** @type {number} */ (instruction[4]);
anchorY = /** @type {number} */ (instruction[5]);
declutterGroup = featureCallback ? null : /** @type {ol.DeclutterGroup} */ (instruction[6]);
var height = /** @type {number} */ (instruction[7]);
var opacity = /** @type {number} */ (instruction[8]);
var originX = /** @type {number} */ (instruction[9]);
var originY = /** @type {number} */ (instruction[10]);
var rotateWithView = /** @type {boolean} */ (instruction[11]);
var rotation = /** @type {number} */ (instruction[12]);
var scale = /** @type {number} */ (instruction[13]);
var snapToPixel = /** @type {boolean} */ (instruction[14]);
var width = /** @type {number} */ (instruction[15]);
var padding, backgroundFill, backgroundStroke;
if (instruction.length > 16) {
padding = /** @type {Array.<number>} */ (instruction[16]);
backgroundFill = /** @type {boolean} */ (instruction[17]);
backgroundStroke = /** @type {boolean} */ (instruction[18]);
} else {
padding = ol.render.canvas.defaultPadding;
backgroundFill = backgroundStroke = false;
}
if (rotateWithView) {
rotation += viewRotation;
}
for (; d < dd; d += 2) {
this.replayImage_(context,
pixelCoordinates[d], pixelCoordinates[d + 1], image, anchorX, anchorY,
declutterGroup, height, opacity, originX, originY, rotation, scale,
snapToPixel, width, padding,
backgroundFill ? /** @type {Array.<*>} */ (lastFillInstruction) : null,
backgroundStroke ? /** @type {Array.<*>} */ (lastStrokeInstruction) : null);
}
this.renderDeclutter_(declutterGroup, feature);
++i;
break;
case ol.render.canvas.Instruction.DRAW_CHARS:
var begin = /** @type {number} */ (instruction[1]);
var end = /** @type {number} */ (instruction[2]);
var baseline = /** @type {number} */ (instruction[3]);
declutterGroup = featureCallback ? null : /** @type {ol.DeclutterGroup} */ (instruction[4]);
var overflow = /** @type {number} */ (instruction[5]);
var fillKey = /** @type {string} */ (instruction[6]);
var maxAngle = /** @type {number} */ (instruction[7]);
var measure = /** @type {function(string):number} */ (instruction[8]);
var offsetY = /** @type {number} */ (instruction[9]);
var strokeKey = /** @type {string} */ (instruction[10]);
var strokeWidth = /** @type {number} */ (instruction[11]);
var text = /** @type {string} */ (instruction[12]);
var textKey = /** @type {string} */ (instruction[13]);
var textScale = /** @type {number} */ (instruction[14]);
var pathLength = ol.geom.flat.length.lineString(pixelCoordinates, begin, end, 2);
var textLength = measure(text);
if (overflow || textLength <= pathLength) {
var textAlign = /** @type {ol.render.canvas.TextReplay} */ (this).textStates[textKey].textAlign;
var startM = (pathLength - textLength) * ol.render.replay.TEXT_ALIGN[textAlign];
var parts = ol.geom.flat.textpath.lineString(
pixelCoordinates, begin, end, 2, text, measure, startM, maxAngle);
if (parts) {
var c, cc, chars, label, part;
if (strokeKey) {
for (c = 0, cc = parts.length; c < cc; ++c) {
part = parts[c]; // x, y, anchorX, rotation, chunk
chars = /** @type {string} */ (part[4]);
label = /** @type {ol.render.canvas.TextReplay} */ (this).getImage(chars, textKey, '', strokeKey);
anchorX = /** @type {number} */ (part[2]) + strokeWidth;
anchorY = baseline * label.height + (0.5 - baseline) * 2 * strokeWidth - offsetY;
this.replayImage_(context,
/** @type {number} */ (part[0]), /** @type {number} */ (part[1]), label,
anchorX, anchorY, declutterGroup, label.height, 1, 0, 0,
/** @type {number} */ (part[3]), textScale, false, label.width,
ol.render.canvas.defaultPadding, null, null);
}
}
if (fillKey) {
for (c = 0, cc = parts.length; c < cc; ++c) {
part = parts[c]; // x, y, anchorX, rotation, chunk
chars = /** @type {string} */ (part[4]);
label = /** @type {ol.render.canvas.TextReplay} */ (this).getImage(chars, textKey, fillKey, '');
anchorX = /** @type {number} */ (part[2]);
anchorY = baseline * label.height - offsetY;
this.replayImage_(context,
/** @type {number} */ (part[0]), /** @type {number} */ (part[1]), label,
anchorX, anchorY, declutterGroup, label.height, 1, 0, 0,
/** @type {number} */ (part[3]), textScale, false, label.width,
ol.render.canvas.defaultPadding, null, null);
}
}
}
}
this.renderDeclutter_(declutterGroup, feature);
++i;
break;
case ol.render.canvas.Instruction.END_GEOMETRY:
if (featureCallback !== undefined) {
feature = /** @type {ol.Feature|ol.render.Feature} */ (instruction[1]);
var result = featureCallback(feature);
if (result) {
return result;
}
}
++i;
break;
case ol.render.canvas.Instruction.FILL:
if (batchSize) {
pendingFill++;
} else {
this.fill_(context);
}
++i;
break;
case ol.render.canvas.Instruction.MOVE_TO_LINE_TO:
d = /** @type {number} */ (instruction[1]);
dd = /** @type {number} */ (instruction[2]);
x = pixelCoordinates[d];
y = pixelCoordinates[d + 1];
roundX = (x + 0.5) | 0;
roundY = (y + 0.5) | 0;
if (roundX !== prevX || roundY !== prevY) {
context.moveTo(x, y);
prevX = roundX;
prevY = roundY;
}
for (d += 2; d < dd; d += 2) {
x = pixelCoordinates[d];
y = pixelCoordinates[d + 1];
roundX = (x + 0.5) | 0;
roundY = (y + 0.5) | 0;
if (d == dd - 2 || roundX !== prevX || roundY !== prevY) {
context.lineTo(x, y);
prevX = roundX;
prevY = roundY;
}
}
++i;
break;
case ol.render.canvas.Instruction.SET_FILL_STYLE:
lastFillInstruction = instruction;
this.fillOrigin_ = instruction[2];
if (pendingFill) {
this.fill_(context);
pendingFill = 0;
if (pendingStroke) {
context.stroke();
pendingStroke = 0;
}
}
context.fillStyle = /** @type {ol.ColorLike} */ (instruction[1]);
++i;
break;
case ol.render.canvas.Instruction.SET_STROKE_STYLE:
lastStrokeInstruction = instruction;
if (pendingStroke) {
context.stroke();
pendingStroke = 0;
}
this.setStrokeStyle_(context, /** @type {Array.<*>} */ (instruction));
++i;
break;
case ol.render.canvas.Instruction.STROKE:
if (batchSize) {
pendingStroke++;
} else {
context.stroke();
}
++i;
break;
default:
++i; // consume the instruction anyway, to avoid an infinite loop
break;
}
}
if (pendingFill) {
this.fill_(context);
}
if (pendingStroke) {
context.stroke();
}
return undefined;
};
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Transform} transform Transform.
* @param {number} viewRotation View rotation.
* @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
* to skip.
*/
ol.render.canvas.Replay.prototype.replay = function(
context, transform, viewRotation, skippedFeaturesHash) {
this.viewRotation_ = viewRotation;
this.replay_(context, transform,
skippedFeaturesHash, this.instructions, undefined, undefined);
};
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Transform} transform Transform.
* @param {number} viewRotation View rotation.
* @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
* to skip.
* @param {function((ol.Feature|ol.render.Feature)): T=} opt_featureCallback
* Feature callback.
* @param {ol.Extent=} opt_hitExtent Only check features that intersect this
* extent.
* @return {T|undefined} Callback result.
* @template T
*/
ol.render.canvas.Replay.prototype.replayHitDetection = function(
context, transform, viewRotation, skippedFeaturesHash,
opt_featureCallback, opt_hitExtent) {
this.viewRotation_ = viewRotation;
return this.replay_(context, transform, skippedFeaturesHash,
this.hitDetectionInstructions, opt_featureCallback, opt_hitExtent);
};
/**
* Reverse the hit detection instructions.
*/
ol.render.canvas.Replay.prototype.reverseHitDetectionInstructions = function() {
var hitDetectionInstructions = this.hitDetectionInstructions;
// step 1 - reverse array
hitDetectionInstructions.reverse();
// step 2 - reverse instructions within geometry blocks
var i;
var n = hitDetectionInstructions.length;
var instruction;
var type;
var begin = -1;
for (i = 0; i < n; ++i) {
instruction = hitDetectionInstructions[i];
type = /** @type {ol.render.canvas.Instruction} */ (instruction[0]);
if (type == ol.render.canvas.Instruction.END_GEOMETRY) {
begin = i;
} else if (type == ol.render.canvas.Instruction.BEGIN_GEOMETRY) {
instruction[2] = i;
ol.array.reverseSubArray(this.hitDetectionInstructions, begin, i);
begin = -1;
}
}
};
/**
* @inheritDoc
*/
ol.render.canvas.Replay.prototype.setFillStrokeStyle = function(fillStyle, strokeStyle) {
var state = this.state;
if (fillStyle) {
var fillStyleColor = fillStyle.getColor();
state.fillStyle = ol.colorlike.asColorLike(fillStyleColor ?
fillStyleColor : ol.render.canvas.defaultFillStyle);
} else {
state.fillStyle = undefined;
}
if (strokeStyle) {
var strokeStyleColor = strokeStyle.getColor();
state.strokeStyle = ol.colorlike.asColorLike(strokeStyleColor ?
strokeStyleColor : ol.render.canvas.defaultStrokeStyle);
var strokeStyleLineCap = strokeStyle.getLineCap();
state.lineCap = strokeStyleLineCap !== undefined ?
strokeStyleLineCap : ol.render.canvas.defaultLineCap;
var strokeStyleLineDash = strokeStyle.getLineDash();
state.lineDash = strokeStyleLineDash ?
strokeStyleLineDash.slice() : ol.render.canvas.defaultLineDash;
var strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();
state.lineDashOffset = strokeStyleLineDashOffset ?
strokeStyleLineDashOffset : ol.render.canvas.defaultLineDashOffset;
var strokeStyleLineJoin = strokeStyle.getLineJoin();
state.lineJoin = strokeStyleLineJoin !== undefined ?
strokeStyleLineJoin : ol.render.canvas.defaultLineJoin;
var strokeStyleWidth = strokeStyle.getWidth();
state.lineWidth = strokeStyleWidth !== undefined ?
strokeStyleWidth : ol.render.canvas.defaultLineWidth;
var strokeStyleMiterLimit = strokeStyle.getMiterLimit();
state.miterLimit = strokeStyleMiterLimit !== undefined ?
strokeStyleMiterLimit : ol.render.canvas.defaultMiterLimit;
if (state.lineWidth > this.maxLineWidth) {
this.maxLineWidth = state.lineWidth;
// invalidate the buffered max extent cache
this.bufferedMaxExtent_ = null;
}
} else {
state.strokeStyle = undefined;
state.lineCap = undefined;
state.lineDash = null;
state.lineDashOffset = undefined;
state.lineJoin = undefined;
state.lineWidth = undefined;
state.miterLimit = undefined;
}
};
/**
* @param {ol.CanvasFillStrokeState} state State.
* @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
*/
ol.render.canvas.Replay.prototype.applyFill = function(state, geometry) {
var fillStyle = state.fillStyle;
var fillInstruction = [ol.render.canvas.Instruction.SET_FILL_STYLE, fillStyle];
if (typeof fillStyle !== 'string') {
var fillExtent = geometry.getExtent();
fillInstruction.push([fillExtent[0], fillExtent[3]]);
}
this.instructions.push(fillInstruction);
};
/**
* @param {ol.CanvasFillStrokeState} state State.
*/
ol.render.canvas.Replay.prototype.applyStroke = function(state) {
this.instructions.push([
ol.render.canvas.Instruction.SET_STROKE_STYLE,
state.strokeStyle, state.lineWidth * this.pixelRatio, state.lineCap,
state.lineJoin, state.miterLimit,
this.applyPixelRatio(state.lineDash), state.lineDashOffset * this.pixelRatio
]);
};
/**
* @param {ol.CanvasFillStrokeState} state State.
* @param {function(this:ol.render.canvas.Replay, ol.CanvasFillStrokeState, (ol.geom.Geometry|ol.render.Feature))} applyFill Apply fill.
* @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
*/
ol.render.canvas.Replay.prototype.updateFillStyle = function(state, applyFill, geometry) {
var fillStyle = state.fillStyle;
if (typeof fillStyle !== 'string' || state.currentFillStyle != fillStyle) {
applyFill.call(this, state, geometry);
state.currentFillStyle = fillStyle;
}
};
/**
* @param {ol.CanvasFillStrokeState} state State.
* @param {function(this:ol.render.canvas.Replay, ol.CanvasFillStrokeState)} applyStroke Apply stroke.
*/
ol.render.canvas.Replay.prototype.updateStrokeStyle = function(state, applyStroke) {
var strokeStyle = state.strokeStyle;
var lineCap = state.lineCap;
var lineDash = state.lineDash;
var lineDashOffset = state.lineDashOffset;
var lineJoin = state.lineJoin;
var lineWidth = state.lineWidth;
var miterLimit = state.miterLimit;
if (state.currentStrokeStyle != strokeStyle ||
state.currentLineCap != lineCap ||
(lineDash != state.currentLineDash && !ol.array.equals(state.currentLineDash, lineDash)) ||
state.currentLineDashOffset != lineDashOffset ||
state.currentLineJoin != lineJoin ||
state.currentLineWidth != lineWidth ||
state.currentMiterLimit != miterLimit) {
applyStroke.call(this, state);
state.currentStrokeStyle = strokeStyle;
state.currentLineCap = lineCap;
state.currentLineDash = lineDash;
state.currentLineDashOffset = lineDashOffset;
state.currentLineJoin = lineJoin;
state.currentLineWidth = lineWidth;
state.currentMiterLimit = miterLimit;
}
};
/**
* @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
* @param {ol.Feature|ol.render.Feature} feature Feature.
*/
ol.render.canvas.Replay.prototype.endGeometry = function(geometry, feature) {
this.beginGeometryInstruction1_[2] = this.instructions.length;
this.beginGeometryInstruction1_ = null;
this.beginGeometryInstruction2_[2] = this.hitDetectionInstructions.length;
this.beginGeometryInstruction2_ = null;
var endGeometryInstruction =
[ol.render.canvas.Instruction.END_GEOMETRY, feature];
this.instructions.push(endGeometryInstruction);
this.hitDetectionInstructions.push(endGeometryInstruction);
};
/**
* FIXME empty description for jsdoc
*/
ol.render.canvas.Replay.prototype.finish = ol.nullFunction;
/**
* Get the buffered rendering extent. Rendering will be clipped to the extent
* provided to the constructor. To account for symbolizers that may intersect
* this extent, we calculate a buffered extent (e.g. based on stroke width).
* @return {ol.Extent} The buffered rendering extent.
* @protected
*/
ol.render.canvas.Replay.prototype.getBufferedMaxExtent = function() {
if (!this.bufferedMaxExtent_) {
this.bufferedMaxExtent_ = ol.extent.clone(this.maxExtent);
if (this.maxLineWidth > 0) {
var width = this.resolution * (this.maxLineWidth + 1) / 2;
ol.extent.buffer(this.bufferedMaxExtent_, width, this.bufferedMaxExtent_);
}
}
return this.bufferedMaxExtent_;
};
/**
* @constructor
* @extends {ol.render.canvas.Replay}
* @param {number} tolerance Tolerance.
* @param {ol.Extent} maxExtent Maximum extent.
* @param {number} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @param {boolean} overlaps The replay can have overlapping geometries.
* @param {?} declutterTree Declutter tree.
* @struct
*/
ol.render.canvas.ImageReplay = function(
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {
ol.render.canvas.Replay.call(this,
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);
/**
* @private
* @type {ol.DeclutterGroup}
*/
this.declutterGroup_ = null;
/**
* @private
* @type {HTMLCanvasElement|HTMLVideoElement|Image}
*/
this.hitDetectionImage_ = null;
/**
* @private
* @type {HTMLCanvasElement|HTMLVideoElement|Image}
*/
this.image_ = null;
/**
* @private
* @type {number|undefined}
*/
this.anchorX_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.anchorY_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.height_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.opacity_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.originX_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.originY_ = undefined;
/**
* @private
* @type {boolean|undefined}
*/
this.rotateWithView_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.rotation_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.scale_ = undefined;
/**
* @private
* @type {boolean|undefined}
*/
this.snapToPixel_ = undefined;
/**
* @private
* @type {number|undefined}
*/
this.width_ = undefined;
};
ol.inherits(ol.render.canvas.ImageReplay, ol.render.canvas.Replay);
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @private
* @return {number} My end.
*/
ol.render.canvas.ImageReplay.prototype.drawCoordinates_ = function(flatCoordinates, offset, end, stride) {
return this.appendFlatCoordinates(
flatCoordinates, offset, end, stride, false, false);
};
/**
* @inheritDoc
*/
ol.render.canvas.ImageReplay.prototype.drawPoint = function(pointGeometry, feature) {
if (!this.image_) {
return;
}
this.beginGeometry(pointGeometry, feature);
var flatCoordinates = pointGeometry.getFlatCoordinates();
var stride = pointGeometry.getStride();
var myBegin = this.coordinates.length;
var myEnd = this.drawCoordinates_(
flatCoordinates, 0, flatCoordinates.length, stride);
this.instructions.push([
ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd, this.image_,
// Remaining arguments to DRAW_IMAGE are in alphabetical order
this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,
this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
this.scale_ * this.pixelRatio, this.snapToPixel_, this.width_
]);
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd,
this.hitDetectionImage_,
// Remaining arguments to DRAW_IMAGE are in alphabetical order
this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,
this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
this.scale_, this.snapToPixel_, this.width_
]);
this.endGeometry(pointGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.ImageReplay.prototype.drawMultiPoint = function(multiPointGeometry, feature) {
if (!this.image_) {
return;
}
this.beginGeometry(multiPointGeometry, feature);
var flatCoordinates = multiPointGeometry.getFlatCoordinates();
var stride = multiPointGeometry.getStride();
var myBegin = this.coordinates.length;
var myEnd = this.drawCoordinates_(
flatCoordinates, 0, flatCoordinates.length, stride);
this.instructions.push([
ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd, this.image_,
// Remaining arguments to DRAW_IMAGE are in alphabetical order
this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,
this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
this.scale_ * this.pixelRatio, this.snapToPixel_, this.width_
]);
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.DRAW_IMAGE, myBegin, myEnd,
this.hitDetectionImage_,
// Remaining arguments to DRAW_IMAGE are in alphabetical order
this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,
this.originX_, this.originY_, this.rotateWithView_, this.rotation_,
this.scale_, this.snapToPixel_, this.width_
]);
this.endGeometry(multiPointGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.ImageReplay.prototype.finish = function() {
this.reverseHitDetectionInstructions();
// FIXME this doesn't really protect us against further calls to draw*Geometry
this.anchorX_ = undefined;
this.anchorY_ = undefined;
this.hitDetectionImage_ = null;
this.image_ = null;
this.height_ = undefined;
this.scale_ = undefined;
this.opacity_ = undefined;
this.originX_ = undefined;
this.originY_ = undefined;
this.rotateWithView_ = undefined;
this.rotation_ = undefined;
this.snapToPixel_ = undefined;
this.width_ = undefined;
};
/**
* @inheritDoc
*/
ol.render.canvas.ImageReplay.prototype.setImageStyle = function(imageStyle, declutterGroup) {
var anchor = imageStyle.getAnchor();
var size = imageStyle.getSize();
var hitDetectionImage = imageStyle.getHitDetectionImage(1);
var image = imageStyle.getImage(1);
var origin = imageStyle.getOrigin();
this.anchorX_ = anchor[0];
this.anchorY_ = anchor[1];
this.declutterGroup_ = /** @type {ol.DeclutterGroup} */ (declutterGroup);
this.hitDetectionImage_ = hitDetectionImage;
this.image_ = image;
this.height_ = size[1];
this.opacity_ = imageStyle.getOpacity();
this.originX_ = origin[0];
this.originY_ = origin[1];
this.rotateWithView_ = imageStyle.getRotateWithView();
this.rotation_ = imageStyle.getRotation();
this.scale_ = imageStyle.getScale();
this.snapToPixel_ = imageStyle.getSnapToPixel();
this.width_ = size[0];
};
/**
* @constructor
* @extends {ol.render.canvas.Replay}
* @param {number} tolerance Tolerance.
* @param {ol.Extent} maxExtent Maximum extent.
* @param {number} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @param {boolean} overlaps The replay can have overlapping geometries.
* @param {?} declutterTree Declutter tree.
* @struct
*/
ol.render.canvas.LineStringReplay = function(
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {
ol.render.canvas.Replay.call(this,
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);
};
ol.inherits(ol.render.canvas.LineStringReplay, ol.render.canvas.Replay);
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {number} end End.
* @param {number} stride Stride.
* @private
* @return {number} end.
*/
ol.render.canvas.LineStringReplay.prototype.drawFlatCoordinates_ = function(flatCoordinates, offset, end, stride) {
var myBegin = this.coordinates.length;
var myEnd = this.appendFlatCoordinates(
flatCoordinates, offset, end, stride, false, false);
var moveToLineToInstruction =
[ol.render.canvas.Instruction.MOVE_TO_LINE_TO, myBegin, myEnd];
this.instructions.push(moveToLineToInstruction);
this.hitDetectionInstructions.push(moveToLineToInstruction);
return end;
};
/**
* @inheritDoc
*/
ol.render.canvas.LineStringReplay.prototype.drawLineString = function(lineStringGeometry, feature) {
var state = this.state;
var strokeStyle = state.strokeStyle;
var lineWidth = state.lineWidth;
if (strokeStyle === undefined || lineWidth === undefined) {
return;
}
this.updateStrokeStyle(state, this.applyStroke);
this.beginGeometry(lineStringGeometry, feature);
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_STROKE_STYLE,
state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
state.miterLimit, state.lineDash, state.lineDashOffset
], [
ol.render.canvas.Instruction.BEGIN_PATH
]);
var flatCoordinates = lineStringGeometry.getFlatCoordinates();
var stride = lineStringGeometry.getStride();
this.drawFlatCoordinates_(flatCoordinates, 0, flatCoordinates.length, stride);
this.hitDetectionInstructions.push([ol.render.canvas.Instruction.STROKE]);
this.endGeometry(lineStringGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.LineStringReplay.prototype.drawMultiLineString = function(multiLineStringGeometry, feature) {
var state = this.state;
var strokeStyle = state.strokeStyle;
var lineWidth = state.lineWidth;
if (strokeStyle === undefined || lineWidth === undefined) {
return;
}
this.updateStrokeStyle(state, this.applyStroke);
this.beginGeometry(multiLineStringGeometry, feature);
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_STROKE_STYLE,
state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
state.miterLimit, state.lineDash, state.lineDashOffset
], [
ol.render.canvas.Instruction.BEGIN_PATH
]);
var ends = multiLineStringGeometry.getEnds();
var flatCoordinates = multiLineStringGeometry.getFlatCoordinates();
var stride = multiLineStringGeometry.getStride();
var offset = 0;
var i, ii;
for (i = 0, ii = ends.length; i < ii; ++i) {
offset = this.drawFlatCoordinates_(
flatCoordinates, offset, ends[i], stride);
}
this.hitDetectionInstructions.push([ol.render.canvas.Instruction.STROKE]);
this.endGeometry(multiLineStringGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.LineStringReplay.prototype.finish = function() {
var state = this.state;
if (state.lastStroke != undefined && state.lastStroke != this.coordinates.length) {
this.instructions.push([ol.render.canvas.Instruction.STROKE]);
}
this.reverseHitDetectionInstructions();
this.state = null;
};
/**
* @inheritDoc.
*/
ol.render.canvas.LineStringReplay.prototype.applyStroke = function(state) {
if (state.lastStroke != undefined && state.lastStroke != this.coordinates.length) {
this.instructions.push([ol.render.canvas.Instruction.STROKE]);
state.lastStroke = this.coordinates.length;
}
state.lastStroke = 0;
ol.render.canvas.Replay.prototype.applyStroke.call(this, state);
this.instructions.push([ol.render.canvas.Instruction.BEGIN_PATH]);
};
/**
* @constructor
* @extends {ol.render.canvas.Replay}
* @param {number} tolerance Tolerance.
* @param {ol.Extent} maxExtent Maximum extent.
* @param {number} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @param {boolean} overlaps The replay can have overlapping geometries.
* @param {?} declutterTree Declutter tree.
* @struct
*/
ol.render.canvas.PolygonReplay = function(
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {
ol.render.canvas.Replay.call(this,
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);
};
ol.inherits(ol.render.canvas.PolygonReplay, ol.render.canvas.Replay);
/**
* @param {Array.<number>} flatCoordinates Flat coordinates.
* @param {number} offset Offset.
* @param {Array.<number>} ends Ends.
* @param {number} stride Stride.
* @private
* @return {number} End.
*/
ol.render.canvas.PolygonReplay.prototype.drawFlatCoordinatess_ = function(flatCoordinates, offset, ends, stride) {
var state = this.state;
var fill = state.fillStyle !== undefined;
var stroke = state.strokeStyle != undefined;
var numEnds = ends.length;
var beginPathInstruction = [ol.render.canvas.Instruction.BEGIN_PATH];
this.instructions.push(beginPathInstruction);
this.hitDetectionInstructions.push(beginPathInstruction);
for (var i = 0; i < numEnds; ++i) {
var end = ends[i];
var myBegin = this.coordinates.length;
var myEnd = this.appendFlatCoordinates(
flatCoordinates, offset, end, stride, true, !stroke);
var moveToLineToInstruction =
[ol.render.canvas.Instruction.MOVE_TO_LINE_TO, myBegin, myEnd];
this.instructions.push(moveToLineToInstruction);
this.hitDetectionInstructions.push(moveToLineToInstruction);
if (stroke) {
// Performance optimization: only call closePath() when we have a stroke.
// Otherwise the ring is closed already (see appendFlatCoordinates above).
var closePathInstruction = [ol.render.canvas.Instruction.CLOSE_PATH];
this.instructions.push(closePathInstruction);
this.hitDetectionInstructions.push(closePathInstruction);
}
offset = end;
}
var fillInstruction = [ol.render.canvas.Instruction.FILL];
this.hitDetectionInstructions.push(fillInstruction);
if (fill) {
this.instructions.push(fillInstruction);
}
if (stroke) {
var strokeInstruction = [ol.render.canvas.Instruction.STROKE];
this.instructions.push(strokeInstruction);
this.hitDetectionInstructions.push(strokeInstruction);
}
return offset;
};
/**
* @inheritDoc
*/
ol.render.canvas.PolygonReplay.prototype.drawCircle = function(circleGeometry, feature) {
var state = this.state;
var fillStyle = state.fillStyle;
var strokeStyle = state.strokeStyle;
if (fillStyle === undefined && strokeStyle === undefined) {
return;
}
this.setFillStrokeStyles_(circleGeometry);
this.beginGeometry(circleGeometry, feature);
// always fill the circle for hit detection
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_FILL_STYLE,
ol.color.asString(ol.render.canvas.defaultFillStyle)
]);
if (state.strokeStyle !== undefined) {
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_STROKE_STYLE,
state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
state.miterLimit, state.lineDash, state.lineDashOffset
]);
}
var flatCoordinates = circleGeometry.getFlatCoordinates();
var stride = circleGeometry.getStride();
var myBegin = this.coordinates.length;
this.appendFlatCoordinates(
flatCoordinates, 0, flatCoordinates.length, stride, false, false);
var beginPathInstruction = [ol.render.canvas.Instruction.BEGIN_PATH];
var circleInstruction = [ol.render.canvas.Instruction.CIRCLE, myBegin];
this.instructions.push(beginPathInstruction, circleInstruction);
this.hitDetectionInstructions.push(beginPathInstruction, circleInstruction);
var fillInstruction = [ol.render.canvas.Instruction.FILL];
this.hitDetectionInstructions.push(fillInstruction);
if (state.fillStyle !== undefined) {
this.instructions.push(fillInstruction);
}
if (state.strokeStyle !== undefined) {
var strokeInstruction = [ol.render.canvas.Instruction.STROKE];
this.instructions.push(strokeInstruction);
this.hitDetectionInstructions.push(strokeInstruction);
}
this.endGeometry(circleGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.PolygonReplay.prototype.drawPolygon = function(polygonGeometry, feature) {
var state = this.state;
this.setFillStrokeStyles_(polygonGeometry);
this.beginGeometry(polygonGeometry, feature);
// always fill the polygon for hit detection
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_FILL_STYLE,
ol.color.asString(ol.render.canvas.defaultFillStyle)]
);
if (state.strokeStyle !== undefined) {
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_STROKE_STYLE,
state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
state.miterLimit, state.lineDash, state.lineDashOffset
]);
}
var ends = polygonGeometry.getEnds();
var flatCoordinates = polygonGeometry.getOrientedFlatCoordinates();
var stride = polygonGeometry.getStride();
this.drawFlatCoordinatess_(flatCoordinates, 0, ends, stride);
this.endGeometry(polygonGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.PolygonReplay.prototype.drawMultiPolygon = function(multiPolygonGeometry, feature) {
var state = this.state;
var fillStyle = state.fillStyle;
var strokeStyle = state.strokeStyle;
if (fillStyle === undefined && strokeStyle === undefined) {
return;
}
this.setFillStrokeStyles_(multiPolygonGeometry);
this.beginGeometry(multiPolygonGeometry, feature);
// always fill the multi-polygon for hit detection
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_FILL_STYLE,
ol.color.asString(ol.render.canvas.defaultFillStyle)
]);
if (state.strokeStyle !== undefined) {
this.hitDetectionInstructions.push([
ol.render.canvas.Instruction.SET_STROKE_STYLE,
state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,
state.miterLimit, state.lineDash, state.lineDashOffset
]);
}
var endss = multiPolygonGeometry.getEndss();
var flatCoordinates = multiPolygonGeometry.getOrientedFlatCoordinates();
var stride = multiPolygonGeometry.getStride();
var offset = 0;
var i, ii;
for (i = 0, ii = endss.length; i < ii; ++i) {
offset = this.drawFlatCoordinatess_(
flatCoordinates, offset, endss[i], stride);
}
this.endGeometry(multiPolygonGeometry, feature);
};
/**
* @inheritDoc
*/
ol.render.canvas.PolygonReplay.prototype.finish = function() {
this.reverseHitDetectionInstructions();
this.state = null;
// We want to preserve topology when drawing polygons. Polygons are
// simplified using quantization and point elimination. However, we might
// have received a mix of quantized and non-quantized geometries, so ensure
// that all are quantized by quantizing all coordinates in the batch.
var tolerance = this.tolerance;
if (tolerance !== 0) {
var coordinates = this.coordinates;
var i, ii;
for (i = 0, ii = coordinates.length; i < ii; ++i) {
coordinates[i] = ol.geom.flat.simplify.snap(coordinates[i], tolerance);
}
}
};
/**
* @private
* @param {ol.geom.Geometry|ol.render.Feature} geometry Geometry.
*/
ol.render.canvas.PolygonReplay.prototype.setFillStrokeStyles_ = function(geometry) {
var state = this.state;
var fillStyle = state.fillStyle;
if (fillStyle !== undefined) {
this.updateFillStyle(state, this.applyFill, geometry);
}
if (state.strokeStyle !== undefined) {
this.updateStrokeStyle(state, this.applyStroke);
}
};
ol.geom.flat.straightchunk = {};
ol.geom.flat.straightchunk.lineString = function(maxAngle, flatCoordinates, offset, end, stride) {
var chunkStart = offset;
var chunkEnd = offset;
var chunkM = 0;
var m = 0;
var start = offset;
var acos, i, m12, m23, x1, y1, x12, y12, x23, y23;
for (i = offset; i < end; i += stride) {
var x2 = flatCoordinates[i];
var y2 = flatCoordinates[i + 1];
if (x1 !== undefined) {
x23 = x2 - x1;
y23 = y2 - y1;
m23 = Math.sqrt(x23 * x23 + y23 * y23);
if (x12 !== undefined) {
m += m12;
acos = Math.acos((x12 * x23 + y12 * y23) / (m12 * m23));
if (acos > maxAngle) {
if (m > chunkM) {
chunkM = m;
chunkStart = start;
chunkEnd = i;
}
m = 0;
start = i - stride;
}
}
m12 = m23;
x12 = x23;
y12 = y23;
}
x1 = x2;
y1 = y2;
}
m += m23;
return m > chunkM ? [start, i] : [chunkStart, chunkEnd];
};
ol.style.TextPlacement = {
POINT: 'point',
LINE: 'line'
};
ol.render.canvas.TextReplay = function(
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {
ol.render.canvas.Replay.call(this,
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);
/**
* @private
* @type {ol.DeclutterGroup}
*/
this.declutterGroup_;
/**
* @private
* @type {Array.<HTMLCanvasElement>}
*/
this.labels_ = null;
/**
* @private
* @type {string}
*/
this.text_ = '';
/**
* @private
* @type {number}
*/
this.textOffsetX_ = 0;
/**
* @private
* @type {number}
*/
this.textOffsetY_ = 0;
/**
* @private
* @type {boolean|undefined}
*/
this.textRotateWithView_ = undefined;
/**
* @private
* @type {number}
*/
this.textRotation_ = 0;
/**
* @private
* @type {?ol.CanvasFillState}
*/
this.textFillState_ = null;
/**
* @type {Object.<string, ol.CanvasFillState>}
*/
this.fillStates = {};
/**
* @private
* @type {?ol.CanvasStrokeState}
*/
this.textStrokeState_ = null;
/**
* @type {Object.<string, ol.CanvasStrokeState>}
*/
this.strokeStates = {};
/**
* @private
* @type {ol.CanvasTextState}
*/
this.textState_ = /** @type {ol.CanvasTextState} */ ({});
/**
* @type {Object.<string, ol.CanvasTextState>}
*/
this.textStates = {};
/**
* @private
* @type {string}
*/
this.textKey_ = '';
/**
* @private
* @type {string}
*/
this.fillKey_ = '';
/**
* @private
* @type {string}
*/
this.strokeKey_ = '';
/**
* @private
* @type {Object.<string, Object.<string, number>>}
*/
this.widths_ = {};
var labelCache = ol.render.canvas.labelCache;
labelCache.prune();
};
ol.inherits(ol.render.canvas.TextReplay, ol.render.canvas.Replay);
/**
* @param {string} font Font to use for measuring.
* @param {Array.<string>} lines Lines to measure.
* @param {Array.<number>} widths Array will be populated with the widths of
* each line.
* @return {number} Width of the whole text.
*/
ol.render.canvas.TextReplay.measureTextWidths = function(font, lines, widths) {
var numLines = lines.length;
var width = 0;
var currentWidth, i;
for (i = 0; i < numLines; ++i) {
currentWidth = ol.render.canvas.measureTextWidth(font, lines[i]);
width = Math.max(width, currentWidth);
widths.push(currentWidth);
}
return width;
};
/**
* @inheritDoc
*/
ol.render.canvas.TextReplay.prototype.drawText = function(geometry, feature) {
var fillState = this.textFillState_;
var strokeState = this.textStrokeState_;
var textState = this.textState_;
if (this.text_ === '' || !textState || (!fillState && !strokeState)) {
return;
}
var begin = this.coordinates.length;
var geometryType = geometry.getType();
var flatCoordinates = null;
var end = 2;
var stride = 2;
var i, ii;
if (textState.placement === ol.style.TextPlacement.LINE) {
if (!ol.extent.intersects(this.getBufferedMaxExtent(), geometry.getExtent())) {
return;
}
var ends;
flatCoordinates = geometry.getFlatCoordinates();
stride = geometry.getStride();
if (geometryType == ol.geom.GeometryType.LINE_STRING) {
ends = [flatCoordinates.length];
} else if (geometryType == ol.geom.GeometryType.MULTI_LINE_STRING) {
ends = geometry.getEnds();
} else if (geometryType == ol.geom.GeometryType.POLYGON) {
ends = geometry.getEnds().slice(0, 1);
} else if (geometryType == ol.geom.GeometryType.MULTI_POLYGON) {
var endss = geometry.getEndss();
ends = [];
for (i = 0, ii = endss.length; i < ii; ++i) {
ends.push(endss[i][0]);
}
}
this.beginGeometry(geometry, feature);
var textAlign = textState.textAlign;
var flatOffset = 0;
var flatEnd;
for (var o = 0, oo = ends.length; o < oo; ++o) {
if (textAlign == undefined) {
var range = ol.geom.flat.straightchunk.lineString(
textState.maxAngle, flatCoordinates, flatOffset, ends[o], stride);
flatOffset = range[0];
flatEnd = range[1];
} else {
flatEnd = ends[o];
}
for (i = flatOffset; i < flatEnd; i += stride) {
this.coordinates.push(flatCoordinates[i], flatCoordinates[i + 1]);
}
end = this.coordinates.length;
flatOffset = ends[o];
this.drawChars_(begin, end, this.declutterGroup_);
begin = end;
}
this.endGeometry(geometry, feature);
} else {
var label = this.getImage(this.text_, this.textKey_, this.fillKey_, this.strokeKey_);
var width = label.width / this.pixelRatio;
switch (geometryType) {
case ol.geom.GeometryType.POINT:
case ol.geom.GeometryType.MULTI_POINT:
flatCoordinates = geometry.getFlatCoordinates();
end = flatCoordinates.length;
break;
case ol.geom.GeometryType.LINE_STRING:
flatCoordinates = /** @type {ol.geom.LineString} */ (geometry).getFlatMidpoint();
break;
case ol.geom.GeometryType.CIRCLE:
flatCoordinates = /** @type {ol.geom.Circle} */ (geometry).getCenter();
break;
case ol.geom.GeometryType.MULTI_LINE_STRING:
flatCoordinates = /** @type {ol.geom.MultiLineString} */ (geometry).getFlatMidpoints();
end = flatCoordinates.length;
break;
case ol.geom.GeometryType.POLYGON:
flatCoordinates = /** @type {ol.geom.Polygon} */ (geometry).getFlatInteriorPoint();
if (!textState.overflow && flatCoordinates[2] / this.resolution < width) {
return;
}
stride = 3;
break;
case ol.geom.GeometryType.MULTI_POLYGON:
var interiorPoints = /** @type {ol.geom.MultiPolygon} */ (geometry).getFlatInteriorPoints();
flatCoordinates = [];
for (i = 0, ii = interiorPoints.length; i < ii; i += 3) {
if (textState.overflow || interiorPoints[i + 2] / this.resolution >= width) {
flatCoordinates.push(interiorPoints[i], interiorPoints[i + 1]);
}
}
end = flatCoordinates.length;
if (end == 0) {
return;
}
break;
}
end = this.appendFlatCoordinates(flatCoordinates, 0, end, stride, false, false);
this.beginGeometry(geometry, feature);
if (textState.backgroundFill || textState.backgroundStroke) {
this.setFillStrokeStyle(textState.backgroundFill, textState.backgroundStroke);
this.updateFillStyle(this.state, this.applyFill, geometry);
this.updateStrokeStyle(this.state, this.applyStroke);
}
this.drawTextImage_(label, begin, end);
this.endGeometry(geometry, feature);
}
};
/**
* @param {string} text Text.
* @param {string} textKey Text style key.
* @param {string} fillKey Fill style key.
* @param {string} strokeKey Stroke style key.
* @return {HTMLCanvasElement} Image.
*/
ol.render.canvas.TextReplay.prototype.getImage = function(text, textKey, fillKey, strokeKey) {
var label;
var key = strokeKey + textKey + text + fillKey + this.pixelRatio;
var labelCache = ol.render.canvas.labelCache;
if (!labelCache.containsKey(key)) {
var strokeState = strokeKey ? this.strokeStates[strokeKey] || this.textStrokeState_ : null;
var fillState = fillKey ? this.fillStates[fillKey] || this.textFillState_ : null;
var textState = this.textStates[textKey] || this.textState_;
var pixelRatio = this.pixelRatio;
var scale = textState.scale * pixelRatio;
var align = ol.render.replay.TEXT_ALIGN[textState.textAlign || ol.render.canvas.defaultTextAlign];
var strokeWidth = strokeKey && strokeState.lineWidth ? strokeState.lineWidth : 0;
var lines = text.split('\n');
var numLines = lines.length;
var widths = [];
var width = ol.render.canvas.TextReplay.measureTextWidths(textState.font, lines, widths);
var lineHeight = ol.render.canvas.measureTextHeight(textState.font);
var height = lineHeight * numLines;
var renderWidth = (width + strokeWidth);
var context = ol.dom.createCanvasContext2D(
Math.ceil(renderWidth * scale),
Math.ceil((height + strokeWidth) * scale));
label = context.canvas;
labelCache.set(key, label);
if (scale != 1) {
context.scale(scale, scale);
}
context.font = textState.font;
if (strokeKey) {
context.strokeStyle = strokeState.strokeStyle;
context.lineWidth = strokeWidth * (ol.has.SAFARI ? scale : 1);
context.lineCap = strokeState.lineCap;
context.lineJoin = strokeState.lineJoin;
context.miterLimit = strokeState.miterLimit;
if (ol.has.CANVAS_LINE_DASH && strokeState.lineDash.length) {
context.setLineDash(strokeState.lineDash);
context.lineDashOffset = strokeState.lineDashOffset;
}
}
if (fillKey) {
context.fillStyle = fillState.fillStyle;
}
context.textBaseline = 'middle';
context.textAlign = 'center';
var leftRight = (0.5 - align);
var x = align * label.width / scale + leftRight * strokeWidth;
var i;
if (strokeKey) {
for (i = 0; i < numLines; ++i) {
context.strokeText(lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight);
}
}
if (fillKey) {
for (i = 0; i < numLines; ++i) {
context.fillText(lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight);
}
}
}
return labelCache.get(key);
};
/**
* @private
* @param {HTMLCanvasElement} label Label.
* @param {number} begin Begin.
* @param {number} end End.
*/
ol.render.canvas.TextReplay.prototype.drawTextImage_ = function(label, begin, end) {
var textState = this.textState_;
var strokeState = this.textStrokeState_;
var pixelRatio = this.pixelRatio;
var align = ol.render.replay.TEXT_ALIGN[textState.textAlign || ol.render.canvas.defaultTextAlign];
var baseline = ol.render.replay.TEXT_ALIGN[textState.textBaseline];
var strokeWidth = strokeState && strokeState.lineWidth ? strokeState.lineWidth : 0;
var anchorX = align * label.width / pixelRatio + 2 * (0.5 - align) * strokeWidth;
var anchorY = baseline * label.height / pixelRatio + 2 * (0.5 - baseline) * strokeWidth;
this.instructions.push([ol.render.canvas.Instruction.DRAW_IMAGE, begin, end,
label, (anchorX - this.textOffsetX_) * pixelRatio, (anchorY - this.textOffsetY_) * pixelRatio,
this.declutterGroup_, label.height, 1, 0, 0, this.textRotateWithView_, this.textRotation_,
1, true, label.width,
textState.padding == ol.render.canvas.defaultPadding ?
ol.render.canvas.defaultPadding : textState.padding.map(function(p) {
return p * pixelRatio;
}),
!!textState.backgroundFill, !!textState.backgroundStroke
]);
this.hitDetectionInstructions.push([ol.render.canvas.Instruction.DRAW_IMAGE, begin, end,
label, (anchorX - this.textOffsetX_) * pixelRatio, (anchorY - this.textOffsetY_) * pixelRatio,
this.declutterGroup_, label.height, 1, 0, 0, this.textRotateWithView_, this.textRotation_,
1 / pixelRatio, true, label.width, textState.padding,
!!textState.backgroundFill, !!textState.backgroundStroke
]);
};
/**
* @private
* @param {number} begin Begin.
* @param {number} end End.
* @param {ol.DeclutterGroup} declutterGroup Declutter group.
*/
ol.render.canvas.TextReplay.prototype.drawChars_ = function(begin, end, declutterGroup) {
var strokeState = this.textStrokeState_;
var textState = this.textState_;
var fillState = this.textFillState_;
var strokeKey = this.strokeKey_;
if (strokeState) {
if (!(strokeKey in this.strokeStates)) {
this.strokeStates[strokeKey] = /** @type {ol.CanvasStrokeState} */ ({
strokeStyle: strokeState.strokeStyle,
lineCap: strokeState.lineCap,
lineDashOffset: strokeState.lineDashOffset,
lineWidth: strokeState.lineWidth,
lineJoin: strokeState.lineJoin,
miterLimit: strokeState.miterLimit,
lineDash: strokeState.lineDash
});
}
}
var textKey = this.textKey_;
if (!(this.textKey_ in this.textStates)) {
this.textStates[this.textKey_] = /** @type {ol.CanvasTextState} */ ({
font: textState.font,
textAlign: textState.textAlign || ol.render.canvas.defaultTextAlign,
scale: textState.scale
});
}
var fillKey = this.fillKey_;
if (fillState) {
if (!(fillKey in this.fillStates)) {
this.fillStates[fillKey] = /** @type {ol.CanvasFillState} */ ({
fillStyle: fillState.fillStyle
});
}
}
var pixelRatio = this.pixelRatio;
var baseline = ol.render.replay.TEXT_ALIGN[textState.textBaseline];
var offsetY = this.textOffsetY_ * pixelRatio;
var text = this.text_;
var font = textState.font;
var textScale = textState.scale;
var strokeWidth = strokeState ? strokeState.lineWidth * textScale / 2 : 0;
var widths = this.widths_[font];
if (!widths) {
this.widths_[font] = widths = {};
}
this.instructions.push([ol.render.canvas.Instruction.DRAW_CHARS,
begin, end, baseline, declutterGroup,
textState.overflow, fillKey, textState.maxAngle,
function(text) {
var width = widths[text];
if (!width) {
width = widths[text] = ol.render.canvas.measureTextWidth(font, text);
}
return width * textScale * pixelRatio;
},
offsetY, strokeKey, strokeWidth * pixelRatio, text, textKey, 1
]);
this.hitDetectionInstructions.push([ol.render.canvas.Instruction.DRAW_CHARS,
begin, end, baseline, declutterGroup,
textState.overflow, fillKey, textState.maxAngle,
function(text) {
var width = widths[text];
if (!width) {
width = widths[text] = ol.render.canvas.measureTextWidth(font, text);
}
return width * textScale;
},
offsetY, strokeKey, strokeWidth, text, textKey, 1 / pixelRatio
]);
};
/**
* @inheritDoc
*/
ol.render.canvas.TextReplay.prototype.setTextStyle = function(textStyle, declutterGroup) {
var textState, fillState, strokeState;
if (!textStyle) {
this.text_ = '';
} else {
this.declutterGroup_ = /** @type {ol.DeclutterGroup} */ (declutterGroup);
var textFillStyle = textStyle.getFill();
if (!textFillStyle) {
fillState = this.textFillState_ = null;
} else {
fillState = this.textFillState_;
if (!fillState) {
fillState = this.textFillState_ = /** @type {ol.CanvasFillState} */ ({});
}
fillState.fillStyle = ol.colorlike.asColorLike(
textFillStyle.getColor() || ol.render.canvas.defaultFillStyle);
}
var textStrokeStyle = textStyle.getStroke();
if (!textStrokeStyle) {
strokeState = this.textStrokeState_ = null;
} else {
strokeState = this.textStrokeState_;
if (!strokeState) {
strokeState = this.textStrokeState_ = /** @type {ol.CanvasStrokeState} */ ({});
}
var lineDash = textStrokeStyle.getLineDash();
var lineDashOffset = textStrokeStyle.getLineDashOffset();
var lineWidth = textStrokeStyle.getWidth();
var miterLimit = textStrokeStyle.getMiterLimit();
strokeState.lineCap = textStrokeStyle.getLineCap() || ol.render.canvas.defaultLineCap;
strokeState.lineDash = lineDash ? lineDash.slice() : ol.render.canvas.defaultLineDash;
strokeState.lineDashOffset =
lineDashOffset === undefined ? ol.render.canvas.defaultLineDashOffset : lineDashOffset;
strokeState.lineJoin = textStrokeStyle.getLineJoin() || ol.render.canvas.defaultLineJoin;
strokeState.lineWidth =
lineWidth === undefined ? ol.render.canvas.defaultLineWidth : lineWidth;
strokeState.miterLimit =
miterLimit === undefined ? ol.render.canvas.defaultMiterLimit : miterLimit;
strokeState.strokeStyle = ol.colorlike.asColorLike(
textStrokeStyle.getColor() || ol.render.canvas.defaultStrokeStyle);
}
textState = this.textState_;
var font = textStyle.getFont() || ol.render.canvas.defaultFont;
//ol.render.canvas.checkFont(font); // FIXME sunyl
var textScale = textStyle.getScale();
textState.overflow = textStyle.getOverflow();
textState.font = font;
textState.maxAngle = textStyle.getMaxAngle();
textState.placement = textStyle.getPlacement();
textState.textAlign = textStyle.getTextAlign();
textState.textBaseline = textStyle.getTextBaseline() || ol.render.canvas.defaultTextBaseline;
textState.backgroundFill = textStyle.getBackgroundFill();
textState.backgroundStroke = textStyle.getBackgroundStroke();
textState.padding = textStyle.getPadding() || ol.render.canvas.defaultPadding;
textState.scale = textScale === undefined ? 1 : textScale;
var textOffsetX = textStyle.getOffsetX();
var textOffsetY = textStyle.getOffsetY();
var textRotateWithView = textStyle.getRotateWithView();
var textRotation = textStyle.getRotation();
this.text_ = textStyle.getText() || '';
this.textOffsetX_ = textOffsetX === undefined ? 0 : textOffsetX;
this.textOffsetY_ = textOffsetY === undefined ? 0 : textOffsetY;
this.textRotateWithView_ = textRotateWithView === undefined ? false : textRotateWithView;
this.textRotation_ = textRotation === undefined ? 0 : textRotation;
this.strokeKey_ = strokeState ?
(typeof strokeState.strokeStyle == 'string' ? strokeState.strokeStyle : ol.getUid(strokeState.strokeStyle)) +
strokeState.lineCap + strokeState.lineDashOffset + '|' + strokeState.lineWidth +
strokeState.lineJoin + strokeState.miterLimit + '[' + strokeState.lineDash.join() + ']' :
'';
this.textKey_ = textState.font + textState.scale + (textState.textAlign || '?');
this.fillKey_ = fillState ?
(typeof fillState.fillStyle == 'string' ? fillState.fillStyle : ('|' + ol.getUid(fillState.fillStyle))) :
'';
}
};
/**
* @constructor
* @extends {ol.render.ReplayGroup}
* @param {number} tolerance Tolerance.
* @param {ol.Extent} maxExtent Max extent.
* @param {number} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @param {boolean} overlaps The replay group can have overlapping geometries.
* @param {?} declutterTree Declutter tree
* for declutter processing in postrender.
* @param {number=} opt_renderBuffer Optional rendering buffer.
* @struct
*/
ol.render.canvas.ReplayGroup = function(
tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree, opt_renderBuffer) {
ol.render.ReplayGroup.call(this);
/**
* Declutter tree.
* @private
*/
this.declutterTree_ = declutterTree;
/**
* @type {ol.DeclutterGroup}
* @private
*/
this.declutterGroup_ = null;
/**
* @private
* @type {number}
*/
this.tolerance_ = tolerance;
/**
* @private
* @type {ol.Extent}
*/
this.maxExtent_ = maxExtent;
/**
* @private
* @type {boolean}
*/
this.overlaps_ = overlaps;
/**
* @private
* @type {number}
*/
this.pixelRatio_ = pixelRatio;
/**
* @private
* @type {number}
*/
this.resolution_ = resolution;
/**
* @private
* @type {number|undefined}
*/
this.renderBuffer_ = opt_renderBuffer;
/**
* @private
* @type {!Object.<string,
* Object.<ol.render.ReplayType, ol.render.canvas.Replay>>}
*/
this.replaysByZIndex_ = {};
/**
* @private
* @type {CanvasRenderingContext2D}
*/
// FIXME
this.hitDetectionContext_ = null;
/**
* @private
* @type {ol.Transform}
*/
this.hitDetectionTransform_ = ol.transform.create();
};
ol.inherits(ol.render.canvas.ReplayGroup, ol.render.ReplayGroup);
/**
* This cache is used for storing calculated pixel circles for increasing performance.
* It is a static property to allow each Replaygroup to access it.
* @type {Object.<number, Array.<Array.<(boolean|undefined)>>>}
* @private
*/
ol.render.canvas.ReplayGroup.circleArrayCache_ = {
0: [[true]]
};
/**
* This method fills a row in the array from the given coordinate to the
* middle with `true`.
* @param {Array.<Array.<(boolean|undefined)>>} array The array that will be altered.
* @param {number} x X coordinate.
* @param {number} y Y coordinate.
* @private
*/
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_ = function(array, x, y) {
var i;
var radius = Math.floor(array.length / 2);
if (x >= radius) {
for (i = radius; i < x; i++) {
array[i][y] = true;
}
} else if (x < radius) {
for (i = x + 1; i < radius; i++) {
array[i][y] = true;
}
}
};
/**
* This methods creates a circle inside a fitting array. Points inside the
* circle are marked by true, points on the outside are undefined.
* It uses the midpoint circle algorithm.
* A cache is used to increase performance.
* @param {number} radius Radius.
* @returns {Array.<Array.<(boolean|undefined)>>} An array with marked circle points.
* @private
*/
ol.render.canvas.ReplayGroup.getCircleArray_ = function(radius) {
if (ol.render.canvas.ReplayGroup.circleArrayCache_[radius] !== undefined) {
return ol.render.canvas.ReplayGroup.circleArrayCache_[radius];
}
var arraySize = radius * 2 + 1;
var arr = new Array(arraySize);
for (var i = 0; i < arraySize; i++) {
arr[i] = new Array(arraySize);
}
var x = radius;
var y = 0;
var error = 0;
while (x >= y) {
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius + x, radius + y);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius + y, radius + x);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius - y, radius + x);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius - x, radius + y);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius - x, radius - y);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius - y, radius - x);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius + y, radius - x);
ol.render.canvas.ReplayGroup.fillCircleArrayRowToMiddle_(arr, radius + x, radius - y);
y++;
error += 1 + 2 * y;
if (2 * (error - x) + 1 > 0) {
x -= 1;
error += 1 - 2 * x;
}
}
ol.render.canvas.ReplayGroup.circleArrayCache_[radius] = arr;
return arr;
};
/**
* @param {!Object.<string, Array.<*>>} declutterReplays Declutter replays.
* @param {CanvasRenderingContext2D} context Context.
* @param {number} rotation Rotation.
*/
ol.render.canvas.ReplayGroup.replayDeclutter = function(declutterReplays, context, rotation) {
var zs = Object.keys(declutterReplays).map(Number).sort(ol.array.numberSafeCompareFunction);
var skippedFeatureUids = {};
for (var z = 0, zz = zs.length; z < zz; ++z) {
var replayData = declutterReplays[zs[z].toString()];
for (var i = 0, ii = replayData.length; i < ii;) {
var replay = replayData[i++];
var transform = replayData[i++];
replay.replay(context, transform, rotation, skippedFeatureUids);
}
}
};
/**
* @param {boolean} group Group with previous replay.
* @return {ol.DeclutterGroup} Declutter instruction group.
*/
ol.render.canvas.ReplayGroup.prototype.addDeclutter = function(group) {
var declutter = null;
if (this.declutterTree_) {
if (group) {
declutter = this.declutterGroup_;
/** @type {number} */ (declutter[4])++;
} else {
declutter = this.declutterGroup_ = ol.extent.createEmpty();
declutter.push(1);
}
}
return declutter;
};
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Transform} transform Transform.
*/
ol.render.canvas.ReplayGroup.prototype.clip = function(context, transform) {
var flatClipCoords = this.getClipCoords(transform);
context.beginPath();
context.moveTo(flatClipCoords[0], flatClipCoords[1]);
context.lineTo(flatClipCoords[2], flatClipCoords[3]);
context.lineTo(flatClipCoords[4], flatClipCoords[5]);
context.lineTo(flatClipCoords[6], flatClipCoords[7]);
context.clip();
};
/**
* @param {Array.<ol.render.ReplayType>} replays Replays.
* @return {boolean} Has replays of the provided types.
*/
ol.render.canvas.ReplayGroup.prototype.hasReplays = function(replays) {
for (var zIndex in this.replaysByZIndex_) {
var candidates = this.replaysByZIndex_[zIndex];
for (var i = 0, ii = replays.length; i < ii; ++i) {
if (replays[i] in candidates) {
return true;
}
}
}
return false;
};
/**
* FIXME empty description for jsdoc
*/
ol.render.canvas.ReplayGroup.prototype.finish = function() {
var zKey;
for (zKey in this.replaysByZIndex_) {
var replays = this.replaysByZIndex_[zKey];
var replayKey;
for (replayKey in replays) {
replays[replayKey].finish();
}
}
};
/**
* @param {ol.Coordinate} coordinate Coordinate.
* @param {number} resolution Resolution.
* @param {number} rotation Rotation.
* @param {number} hitTolerance Hit tolerance in pixels.
* @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
* to skip.
* @param {function((ol.Feature|ol.render.Feature)): T} callback Feature
* callback.
* @param {Object.<string, ol.DeclutterGroup>} declutterReplays Declutter
* replays.
* @return {T|undefined} Callback result.
* @template T
*/
ol.render.canvas.ReplayGroup.prototype.forEachFeatureAtCoordinate = function(
coordinate, resolution, rotation, hitTolerance, skippedFeaturesHash, callback, declutterReplays) {
hitTolerance = Math.round(hitTolerance);
var contextSize = hitTolerance * 2 + 1;
var transform = ol.transform.compose(this.hitDetectionTransform_,
hitTolerance + 0.5, hitTolerance + 0.5,
1 / resolution, -1 / resolution,
-rotation,
-coordinate[0], -coordinate[1]);
var context = this.hitDetectionContext_;
if (context.canvas.width !== contextSize || context.canvas.height !== contextSize) {
context.canvas.width = contextSize;
context.canvas.height = contextSize;
} else {
context.clearRect(0, 0, contextSize, contextSize);
}
/**
* @type {ol.Extent}
*/
var hitExtent;
if (this.renderBuffer_ !== undefined) {
hitExtent = ol.extent.createEmpty();
ol.extent.extendCoordinate(hitExtent, coordinate);
ol.extent.buffer(hitExtent, resolution * (this.renderBuffer_ + hitTolerance), hitExtent);
}
var mask = ol.render.canvas.ReplayGroup.getCircleArray_(hitTolerance);
var declutteredFeatures;
if (this.declutterTree_) {
declutteredFeatures = this.declutterTree_.all().map(function(entry) {
return entry.value;
});
}
var replayType;
/**
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @return {?} Callback result.
*/
function featureCallback(feature) {
var imageData = context.getImageData(0, 0, contextSize, contextSize).data;
for (var i = 0; i < contextSize; i++) {
for (var j = 0; j < contextSize; j++) {
if (mask[i][j]) {
if (imageData[(j * contextSize + i) * 4 + 3] > 0) {
var result;
if (!(declutteredFeatures && (replayType == ol.render.ReplayType.IMAGE || replayType == ol.render.ReplayType.TEXT)) ||
declutteredFeatures.indexOf(feature) !== -1) {
result = callback(feature);
}
if (result) {
return result;
} else {
context.clearRect(0, 0, contextSize, contextSize);
return undefined;
}
}
}
}
}
}
/** @type {Array.<number>} */
var zs = Object.keys(this.replaysByZIndex_).map(Number);
zs.sort(ol.array.numberSafeCompareFunction);
var i, j, replays, replay, result;
for (i = zs.length - 1; i >= 0; --i) {
var zIndexKey = zs[i].toString();
replays = this.replaysByZIndex_[zIndexKey];
for (j = ol.render.replay.ORDER.length - 1; j >= 0; --j) {
replayType = ol.render.replay.ORDER[j];
replay = replays[replayType];
if (replay !== undefined) {
if (declutterReplays &&
(replayType == ol.render.ReplayType.IMAGE || replayType == ol.render.ReplayType.TEXT)) {
var declutter = declutterReplays[zIndexKey];
if (!declutter) {
declutterReplays[zIndexKey] = [replay, transform.slice(0)];
} else {
declutter.push(replay, transform.slice(0));
}
} else {
result = replay.replayHitDetection(context, transform, rotation,
skippedFeaturesHash, featureCallback, hitExtent);
if (result) {
return result;
}
}
}
}
}
return undefined;
};
/**
* @param {ol.Transform} transform Transform.
* @return {Array.<number>} Clip coordinates.
*/
ol.render.canvas.ReplayGroup.prototype.getClipCoords = function(transform) {
var maxExtent = this.maxExtent_;
var minX = maxExtent[0];
var minY = maxExtent[1];
var maxX = maxExtent[2];
var maxY = maxExtent[3];
var flatClipCoords = [minX, minY, minX, maxY, maxX, maxY, maxX, minY];
ol.geom.flat.transform.transform2D(
flatClipCoords, 0, 8, 2, transform, flatClipCoords);
return flatClipCoords;
};
/**
* @inheritDoc
*/
ol.render.canvas.ReplayGroup.prototype.getReplay = function(zIndex, replayType) {
var zIndexKey = zIndex !== undefined ? zIndex.toString() : '0';
var replays = this.replaysByZIndex_[zIndexKey];
if (replays === undefined) {
replays = {};
this.replaysByZIndex_[zIndexKey] = replays;
}
var replay = replays[replayType];
if (replay === undefined) {
var Constructor = ol.render.canvas.ReplayGroup.BATCH_CONSTRUCTORS_[replayType];
replay = new Constructor(this.tolerance_, this.maxExtent_,
this.resolution_, this.pixelRatio_, this.overlaps_, this.declutterTree_);
replays[replayType] = replay;
}
return replay;
};
/**
* @return {Object.<string, Object.<ol.render.ReplayType, ol.render.canvas.Replay>>} Replays.
*/
ol.render.canvas.ReplayGroup.prototype.getReplays = function() {
return this.replaysByZIndex_;
};
/**
* @inheritDoc
*/
ol.render.canvas.ReplayGroup.prototype.isEmpty = function() {
return ol.obj.isEmpty(this.replaysByZIndex_);
};
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Transform} transform Transform.
* @param {number} viewRotation View rotation.
* @param {Object.<string, boolean>} skippedFeaturesHash Ids of features
* to skip.
* @param {Array.<ol.render.ReplayType>=} opt_replayTypes Ordered replay types
* to replay. Default is {@link ol.render.replay.ORDER}
* @param {Object.<string, ol.DeclutterGroup>=} opt_declutterReplays Declutter
* replays.
*/
ol.render.canvas.ReplayGroup.prototype.replay = function(context,
transform, viewRotation, skippedFeaturesHash, opt_replayTypes, opt_declutterReplays) {
/** @type {Array.<number>} */
var zs = Object.keys(this.replaysByZIndex_).map(Number);
zs.sort(ol.array.numberSafeCompareFunction);
// setup clipping so that the parts of over-simplified geometries are not
// visible outside the current extent when panning
context.save();
this.clip(context, transform);
var replayTypes = opt_replayTypes ? opt_replayTypes : ol.render.replay.ORDER;
var i, ii, j, jj, replays, replay;
for (i = 0, ii = zs.length; i < ii; ++i) {
var zIndexKey = zs[i].toString();
replays = this.replaysByZIndex_[zIndexKey];
for (j = 0, jj = replayTypes.length; j < jj; ++j) {
var replayType = replayTypes[j];
replay = replays[replayType];
if (replay !== undefined) {
if (opt_declutterReplays &&
(replayType == ol.render.ReplayType.IMAGE || replayType == ol.render.ReplayType.TEXT)) {
var declutter = opt_declutterReplays[zIndexKey];
if (!declutter) {
opt_declutterReplays[zIndexKey] = [replay, transform.slice(0)];
} else {
declutter.push(replay, transform.slice(0));
}
} else {
replay.replay(context, transform, viewRotation, skippedFeaturesHash);
}
}
}
}
context.restore();
};
/**
* @const
* @private
* @type {Object.<ol.render.ReplayType,
* function(new: ol.render.canvas.Replay, number, ol.Extent,
* number, number, boolean, Array.<ol.DeclutterGroup>)>}
*/
ol.render.canvas.ReplayGroup.BATCH_CONSTRUCTORS_ = {
'Circle': ol.render.canvas.PolygonReplay,
'Default': ol.render.canvas.Replay,
'Image': ol.render.canvas.ImageReplay,
'LineString': ol.render.canvas.LineStringReplay,
'Polygon': ol.render.canvas.PolygonReplay,
'Text': ol.render.canvas.TextReplay
};
ol.renderer = {};
ol.renderer.vector = {};
/**
* @param {ol.Feature|ol.render.Feature} feature1 Feature 1.
* @param {ol.Feature|ol.render.Feature} feature2 Feature 2.
* @return {number} Order.
*/
ol.renderer.vector.defaultOrder = function(feature1, feature2) {
return ol.getUid(feature1) - ol.getUid(feature2);
};
/**
* @param {number} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @return {number} Squared pixel tolerance.
*/
ol.renderer.vector.getSquaredTolerance = function(resolution, pixelRatio) {
var tolerance = ol.renderer.vector.getTolerance(resolution, pixelRatio);
return tolerance * tolerance;
};
/**
* @param {number} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @return {number} Pixel tolerance.
*/
ol.renderer.vector.getTolerance = function(resolution, pixelRatio) {
return ol.SIMPLIFY_TOLERANCE * resolution / pixelRatio;
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.Circle} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderCircleGeometry_ = function(replayGroup, geometry, style, feature) {
var fillStyle = style.getFill();
var strokeStyle = style.getStroke();
if (fillStyle || strokeStyle) {
var circleReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.CIRCLE);
circleReplay.setFillStrokeStyle(fillStyle, strokeStyle);
circleReplay.drawCircle(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));
textReplay.drawText(geometry, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @param {ol.style.Style} style Style.
* @param {number} squaredTolerance Squared tolerance.
* @param {function(this: T, ol.events.Event)} listener Listener function.
* @param {T} thisArg Value to use as `this` when executing `listener`.
* @return {boolean} `true` if style is loading.
* @template T
*/
ol.renderer.vector.renderFeature = function(
replayGroup, feature, style, squaredTolerance, listener, thisArg) {
var loading = false;
var imageStyle, imageState;
imageStyle = style.getImage();
if (imageStyle) {
imageState = imageStyle.getImageState();
if (imageState == ol.ImageState.LOADED ||
imageState == ol.ImageState.ERROR) {
imageStyle.unlistenImageChange(listener, thisArg);
} else {
if (imageState == ol.ImageState.IDLE) {
imageStyle.load();
}
imageState = imageStyle.getImageState();
imageStyle.listenImageChange(listener, thisArg);
loading = true;
}
}
ol.renderer.vector.renderFeature_(replayGroup, feature, style,
squaredTolerance);
return loading;
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @param {ol.style.Style} style Style.
* @param {number} squaredTolerance Squared tolerance.
* @private
*/
ol.renderer.vector.renderFeature_ = function(
replayGroup, feature, style, squaredTolerance) {
var geometry = style.getGeometryFunction()(feature);
if (!geometry) {
return;
}
var simplifiedGeometry = geometry.getSimplifiedGeometry(squaredTolerance);
var renderer = style.getRenderer();
if (renderer) {
ol.renderer.vector.renderGeometry_(replayGroup, simplifiedGeometry, style, feature);
} else {
var geometryRenderer =
ol.renderer.vector.GEOMETRY_RENDERERS_[simplifiedGeometry.getType()];
geometryRenderer(replayGroup, simplifiedGeometry, style, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.Geometry} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderGeometry_ = function(replayGroup, geometry, style, feature) {
if (geometry.getType() == ol.geom.GeometryType.GEOMETRY_COLLECTION) {
var geometries = /** @type {ol.geom.GeometryCollection} */ (geometry).getGeometries();
for (var i = 0, ii = geometries.length; i < ii; ++i) {
ol.renderer.vector.renderGeometry_(replayGroup, geometries[i], style, feature);
}
return;
}
var replay = replayGroup.getReplay(style.getZIndex(), ol.render.ReplayType.DEFAULT);
replay.drawCustom(/** @type {ol.geom.SimpleGeometry} */ (geometry), feature, style.getRenderer());
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.GeometryCollection} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderGeometryCollectionGeometry_ = function(replayGroup, geometry, style, feature) {
var geometries = geometry.getGeometriesArray();
var i, ii;
for (i = 0, ii = geometries.length; i < ii; ++i) {
var geometryRenderer =
ol.renderer.vector.GEOMETRY_RENDERERS_[geometries[i].getType()];
geometryRenderer(replayGroup, geometries[i], style, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.LineString|ol.render.Feature} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderLineStringGeometry_ = function(replayGroup, geometry, style, feature) {
var strokeStyle = style.getStroke();
if (strokeStyle) {
var lineStringReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.LINE_STRING);
lineStringReplay.setFillStrokeStyle(null, strokeStyle);
lineStringReplay.drawLineString(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));
textReplay.drawText(geometry, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.MultiLineString|ol.render.Feature} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderMultiLineStringGeometry_ = function(replayGroup, geometry, style, feature) {
var strokeStyle = style.getStroke();
if (strokeStyle) {
var lineStringReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.LINE_STRING);
lineStringReplay.setFillStrokeStyle(null, strokeStyle);
lineStringReplay.drawMultiLineString(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));
textReplay.drawText(geometry, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.MultiPolygon} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderMultiPolygonGeometry_ = function(replayGroup, geometry, style, feature) {
var fillStyle = style.getFill();
var strokeStyle = style.getStroke();
if (strokeStyle || fillStyle) {
var polygonReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.POLYGON);
polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
polygonReplay.drawMultiPolygon(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));
textReplay.drawText(geometry, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.Point|ol.render.Feature} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderPointGeometry_ = function(replayGroup, geometry, style, feature) {
var imageStyle = style.getImage();
if (imageStyle) {
if (imageStyle.getImageState() != ol.ImageState.LOADED) {
return;
}
var imageReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.IMAGE);
imageReplay.setImageStyle(imageStyle, replayGroup.addDeclutter(false));
imageReplay.drawPoint(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(!!imageStyle));
textReplay.drawText(geometry, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.MultiPoint|ol.render.Feature} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderMultiPointGeometry_ = function(replayGroup, geometry, style, feature) {
var imageStyle = style.getImage();
if (imageStyle) {
if (imageStyle.getImageState() != ol.ImageState.LOADED) {
return;
}
var imageReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.IMAGE);
imageReplay.setImageStyle(imageStyle, replayGroup.addDeclutter(false));
imageReplay.drawMultiPoint(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(!!imageStyle));
textReplay.drawText(geometry, feature);
}
};
/**
* @param {ol.render.ReplayGroup} replayGroup Replay group.
* @param {ol.geom.Polygon|ol.render.Feature} geometry Geometry.
* @param {ol.style.Style} style Style.
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @private
*/
ol.renderer.vector.renderPolygonGeometry_ = function(replayGroup, geometry, style, feature) {
var fillStyle = style.getFill();
var strokeStyle = style.getStroke();
if (fillStyle || strokeStyle) {
var polygonReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.POLYGON);
polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
polygonReplay.drawPolygon(geometry, feature);
}
var textStyle = style.getText();
if (textStyle) {
var textReplay = replayGroup.getReplay(
style.getZIndex(), ol.render.ReplayType.TEXT);
textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));
textReplay.drawText(geometry, feature);
}
};
/**
* @const
* @private
* @type {Object.<ol.geom.GeometryType,
* function(ol.render.ReplayGroup, ol.geom.Geometry,
* ol.style.Style, Object)>}
*/
ol.renderer.vector.GEOMETRY_RENDERERS_ = {
'Point': ol.renderer.vector.renderPointGeometry_,
'LineString': ol.renderer.vector.renderLineStringGeometry_,
'Polygon': ol.renderer.vector.renderPolygonGeometry_,
'MultiPoint': ol.renderer.vector.renderMultiPointGeometry_,
'MultiLineString': ol.renderer.vector.renderMultiLineStringGeometry_,
'MultiPolygon': ol.renderer.vector.renderMultiPolygonGeometry_,
'GeometryCollection': ol.renderer.vector.renderGeometryCollectionGeometry_,
'Circle': ol.renderer.vector.renderCircleGeometry_
};
var spriteImageCanvas = {};
var mvtStyleClass = new MvtStyle(ol, true);
var mvtRenderer2D = new MvtRenderer2D({
mvtStyle: mvtStyleClass,
openlayer: ol,
useOffscreen: true
});
function MVTWorker(parameters, transferableObjects) {
var canvas = new OffscreenCanvas(parameters.canvasWidth, parameters.canvasWidth);
var idCanvas = new OffscreenCanvas(parameters.canvasWidth, parameters.canvasWidth);
var pbfData = parameters.pbfData;
var layers = parameters.layers;
var transform = parameters.transform;
var squaredTolerance = parameters.squaredTolerance;
var spriteImageDatas = parameters.spriteImageDatas;
var keepProperties = parameters.keepProperties;
var tileLevel = parameters.tileLevel;
var needSourceLayerNames = parameters.needSourceLayerNames;
var selectEnabled = parameters.selectEnabled;
var featureProperties = {};
try {
var mvtParser = new ol.format.MVT({
featureClass: ol.Feature
});
var features = mvtParser.readFeatures(pbfData, {
needSourceLayerNames: needSourceLayerNames
});
var renderResult = mvtRenderer2D.renderFeatures({
colorCanvas: canvas,
idCanvas: idCanvas,
transform: transform,
layers: layers,
features: features,
tileLevel: tileLevel,
spriteImageCanvas: spriteImageCanvas,
spriteImageDatas: spriteImageDatas,
squaredTolerance: squaredTolerance,
selectEnabled: selectEnabled,
showBillboard: false
});
if (keepProperties) {
var featuresToRender = renderResult.idFeatures;
var featuresToRenderLength = featuresToRender.length;
for (var i = 0; i < featuresToRenderLength; i++) {
var feature = featuresToRender[i];
var featureID = getFeatureID$1(feature);
var propertiesWithoutGeometry = feature.getProperties();
if (when.defined(propertiesWithoutGeometry.geometry)) {
delete propertiesWithoutGeometry.geometry;
}
featureProperties[featureID] = propertiesWithoutGeometry;
}
}
}
catch (err) {
}
var imageBitmap = canvas.transferToImageBitmap();
var idImageBitmap = selectEnabled ? idCanvas.transferToImageBitmap() : null;
transferableObjects.push(imageBitmap);
return {
buffer: imageBitmap,
idBuffer: idImageBitmap,
properties: featureProperties
};
}
function getFeatureID$1(feature) {
var id = feature.getId();
// 只在颜色中记录256*256*256这么大范围的ID，超过这个范围的ID舍去
var discard = Math.floor(id / 16777216);
id = id - discard * 16777216;
return id;
}
var MVTWorker$1 = createTaskProcessorWorker(MVTWorker);
return MVTWorker$1;
});