196 lines
4.4 KiB
JavaScript
196 lines
4.4 KiB
JavaScript
goog.provide('ol.renderer.Map');
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goog.require('goog.Disposable');
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goog.require('goog.asserts');
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goog.require('goog.dispose');
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goog.require('goog.functions');
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goog.require('goog.object');
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goog.require('goog.vec.Mat4');
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goog.require('ol.FrameState');
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goog.require('ol.layer.Layer');
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goog.require('ol.renderer.Layer');
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/**
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* @constructor
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* @extends {goog.Disposable}
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* @param {Element} container Container.
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* @param {ol.Map} map Map.
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*/
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ol.renderer.Map = function(container, map) {
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goog.base(this);
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/**
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* @private
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* @type {ol.Map}
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*/
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this.map_ = map;
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/**
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* @private
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* @type {Object.<string, ol.renderer.Layer>}
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*/
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this.layerRenderers_ = {};
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};
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goog.inherits(ol.renderer.Map, goog.Disposable);
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/**
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* @param {ol.FrameState} frameState FrameState.
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* @protected
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*/
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ol.renderer.Map.prototype.calculateMatrices2D = function(frameState) {
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var view2DState = frameState.view2DState;
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var coordinateToPixelMatrix = frameState.coordinateToPixelMatrix;
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goog.vec.Mat4.makeIdentity(coordinateToPixelMatrix);
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goog.vec.Mat4.translate(coordinateToPixelMatrix,
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frameState.size[0] / 2,
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frameState.size[1] / 2,
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0);
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goog.vec.Mat4.scale(coordinateToPixelMatrix,
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1 / view2DState.resolution,
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-1 / view2DState.resolution,
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1);
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goog.vec.Mat4.rotateZ(coordinateToPixelMatrix,
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-view2DState.rotation);
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goog.vec.Mat4.translate(coordinateToPixelMatrix,
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-view2DState.center[0],
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-view2DState.center[1],
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0);
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var inverted = goog.vec.Mat4.invert(
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coordinateToPixelMatrix, frameState.pixelToCoordinateMatrix);
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goog.asserts.assert(inverted);
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};
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/**
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* @param {ol.layer.Layer} layer Layer.
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* @protected
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* @return {ol.renderer.Layer} layerRenderer Layer renderer.
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*/
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ol.renderer.Map.prototype.createLayerRenderer = function(layer) {
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return new ol.renderer.Layer(this, layer);
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};
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/**
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* @inheritDoc
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*/
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ol.renderer.Map.prototype.disposeInternal = function() {
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goog.object.forEach(this.layerRenderers_, function(layerRenderer) {
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goog.dispose(layerRenderer);
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});
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goog.base(this, 'disposeInternal');
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};
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/**
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* @return {HTMLCanvasElement} Canvas.
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*/
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ol.renderer.Map.prototype.getCanvas = goog.functions.NULL;
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/**
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* @param {ol.layer.Layer} layer Layer.
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* @protected
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* @return {ol.renderer.Layer} Layer renderer.
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*/
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ol.renderer.Map.prototype.getLayerRenderer = function(layer) {
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var layerKey = goog.getUid(layer).toString();
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if (layerKey in this.layerRenderers_) {
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return this.layerRenderers_[layerKey];
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} else {
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var layerRenderer = this.createLayerRenderer(layer);
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this.layerRenderers_[layerKey] = layerRenderer;
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return layerRenderer;
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}
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};
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/**
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* @param {string} layerKey Layer key.
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* @protected
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* @return {ol.renderer.Layer} Layer renderer.
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*/
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ol.renderer.Map.prototype.getLayerRendererByKey = function(layerKey) {
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goog.asserts.assert(layerKey in this.layerRenderers_);
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return this.layerRenderers_[layerKey];
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};
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/**
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* @protected
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* @return {Object.<number, ol.renderer.Layer>} Layer renderers.
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*/
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ol.renderer.Map.prototype.getLayerRenderers = function() {
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return this.layerRenderers_;
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};
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/**
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* @return {ol.Map} Map.
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*/
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ol.renderer.Map.prototype.getMap = function() {
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return this.map_;
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};
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/**
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* @param {string} layerKey Layer key.
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* @return {ol.renderer.Layer} Layer renderer.
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* @private
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*/
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ol.renderer.Map.prototype.removeLayerRendererByKey_ = function(layerKey) {
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goog.asserts.assert(layerKey in this.layerRenderers_);
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var layerRenderer = this.layerRenderers_[layerKey];
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delete this.layerRenderers_[layerKey];
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return layerRenderer;
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};
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/**
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* Render.
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* @param {?ol.FrameState} frameState Frame state.
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*/
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ol.renderer.Map.prototype.renderFrame = goog.nullFunction;
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/**
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* @param {ol.Map} map Map.
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* @param {ol.FrameState} frameState Frame state.
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* @private
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*/
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ol.renderer.Map.prototype.removeUnusedLayerRenderers_ =
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function(map, frameState) {
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var layerKey;
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for (layerKey in this.layerRenderers_) {
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if (goog.isNull(frameState) || !(layerKey in frameState.layerStates)) {
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goog.dispose(this.removeLayerRendererByKey_(layerKey));
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}
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}
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};
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/**
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* @param {!ol.FrameState} frameState Frame state.
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* @protected
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*/
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ol.renderer.Map.prototype.scheduleRemoveUnusedLayerRenderers =
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function(frameState) {
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var layerKey;
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for (layerKey in this.layerRenderers_) {
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if (!(layerKey in frameState.layerStates)) {
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frameState.postRenderFunctions.push(
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goog.bind(this.removeUnusedLayerRenderers_, this));
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return;
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}
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}
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};
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