openlayers

<!doctype html> <html lang="en"> <head> <title>Code coverage report for ol/renderer/webgl/webglimagelayerrenderer.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../../prettify.css" /> <link rel="stylesheet" href="../../../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../../../index.html">all files</a> / <a href="index.html">ol/renderer/webgl/</a> webglimagelayerrenderer.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 28.06% Statements 39/139 </div> <div class='fl pad1y space-right2'> 0% Branches 0/41 </div> <div class='fl pad1y space-right2'> 20% Functions 2/10 </div> <div class='fl pad1y space-right2'> 28.06% Lines 39/139 </div> </div> </div> <div class='status-line low'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334</td><td class="line-coverage quiet">1×   1× 1× 1× 1× 1× 1× 1× 1× 1× 1× 1× 1× 1× 1× 1× 1×                   1×   1×             1×           1×           1×     1×               1×                                 1×                                             1×                                                                                                                                                                                                 1×       1× 1×   1× 1× 1×     1× 1×       1×       1×               1×                     1×                                                                                                                                 1×                                                                </td><td class="text"><pre class="prettyprint lang-js">goog.provide('ol.renderer.webgl.ImageLayer');   goog.require('goog.asserts'); goog.require('goog.functions'); goog.require('goog.vec.Mat4'); goog.require('goog.webgl'); goog.require('ol.Coordinate'); goog.require('ol.Extent'); goog.require('ol.ImageBase'); goog.require('ol.ViewHint'); goog.require('ol.dom'); goog.require('ol.extent'); goog.require('ol.layer.Image'); goog.require('ol.proj'); goog.require('ol.renderer.webgl.Layer'); goog.require('ol.source.ImageVector'); goog.require('ol.vec.Mat4'); goog.require('ol.webgl.Context');       /** * @constructor * @extends {ol.renderer.webgl.Layer} * @param {ol.renderer.webgl.Map} mapRenderer Map renderer. * @param {ol.layer.Image} imageLayer Tile layer. */ ol.renderer.webgl.ImageLayer = function(mapRenderer, imageLayer) {   goog.base(this, mapRenderer, imageLayer);   /** * The last rendered image. * @private * @type {?ol.ImageBase} */ this.image_ = null;   /** * @private * @type {CanvasRenderingContext2D} */ this.hitCanvasContext_ = null;   /** * @private * @type {?goog.vec.Mat4.Number} */ this.hitTransformationMatrix_ = null;   }; goog.inherits(ol.renderer.webgl.ImageLayer, ol.renderer.webgl.Layer);     /** * @param {ol.ImageBase} image Image. * @private * @return {WebGLTexture} Texture. */ ol.renderer.webgl.ImageLayer.prototype.createTexture_ = function(image) {   // We meet the conditions to work with non-power of two textures. // http://www.khronos.org/webgl/wiki/WebGL_and_OpenGL_Differences#Non-Power_of_Two_Texture_Support // http://learningwebgl.com/blog/?p=2101   var imageElement = image.getImage(); var gl = this.mapRenderer.getGL();   return ol.webgl.Context.createTexture( gl, imageElement, goog.webgl.CLAMP_TO_EDGE, goog.webgl.CLAMP_TO_EDGE); };     /** * @inheritDoc */ ol.renderer.webgl.ImageLayer.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, callback, thisArg) { var layer = this.getLayer(); var source = layer.getSource(); var resolution = frameState.viewState.resolution; var rotation = frameState.viewState.rotation; var skippedFeatureUids = frameState.skippedFeatureUids; return source.forEachFeatureAtCoordinate( coordinate, resolution, rotation, skippedFeatureUids,   /** * @param {ol.Feature|ol.render.Feature} feature Feature. * @return {?} Callback result. */ function(feature) { return callback.call(thisArg, feature, layer); }); };     /** * @inheritDoc */ ol.renderer.webgl.ImageLayer.prototype.prepareFrame = function(frameState, layerState, context) {   var gl = this.mapRenderer.getGL();   var pixelRatio = frameState.pixelRatio; var viewState = frameState.viewState; var viewCenter = viewState.center; var viewResolution = viewState.resolution; var viewRotation = viewState.rotation;   var image = this.image_; var texture = this.texture; var imageLayer = this.getLayer(); goog.asserts.assertInstanceof(imageLayer, ol.layer.Image, 'layer is an instance of ol.layer.Image'); var imageSource = imageLayer.getSource();   var hints = frameState.viewHints;   var renderedExtent = frameState.extent; if (layerState.extent !== undefined) { renderedExtent = ol.extent.getIntersection( renderedExtent, layerState.extent); } if (!hints[ol.ViewHint.ANIMATING] && !hints[ol.ViewHint.INTERACTING] && !ol.extent.isEmpty(renderedExtent)) { var projection = viewState.projection; if (!ol.ENABLE_RASTER_REPROJECTION) { var sourceProjection = imageSource.getProjection(); if (sourceProjection) { goog.asserts.assert(ol.proj.equivalent(projection, sourceProjection), 'projection and sourceProjection are equivalent'); projection = sourceProjection; } } var image_ = imageSource.getImage(renderedExtent, viewResolution, pixelRatio, projection); if (image_) { var loaded = this.loadImage(image_); if (loaded) { image = image_; texture = this.createTexture_(image_); if (this.texture) { frameState.postRenderFunctions.push( goog.partial( /** * @param {WebGLRenderingContext} gl GL. * @param {WebGLTexture} texture Texture. */ function(gl, texture) { if (!gl.isContextLost()) { gl.deleteTexture(texture); } }, gl, this.texture)); } } } }   if (image) { goog.asserts.assert(texture, 'texture is truthy');   var canvas = this.mapRenderer.getContext().getCanvas();   this.updateProjectionMatrix_(canvas.width, canvas.height, pixelRatio, viewCenter, viewResolution, viewRotation, image.getExtent()); this.hitTransformationMatrix_ = null;   // Translate and scale to flip the Y coord. var texCoordMatrix = this.texCoordMatrix; goog.vec.Mat4.makeIdentity(texCoordMatrix); goog.vec.Mat4.scale(texCoordMatrix, 1, -1, 1); goog.vec.Mat4.translate(texCoordMatrix, 0, -1, 0);   this.image_ = image; this.texture = texture;   this.updateAttributions(frameState.attributions, image.getAttributions()); this.updateLogos(frameState, imageSource); }   return true; };     /** * @param {number} canvasWidth Canvas width. * @param {number} canvasHeight Canvas height. * @param {number} pixelRatio Pixel ratio. * @param {ol.Coordinate} viewCenter View center. * @param {number} viewResolution View resolution. * @param {number} viewRotation View rotation. * @param {ol.Extent} imageExtent Image extent. * @private */ ol.renderer.webgl.ImageLayer.prototype.updateProjectionMatrix_ = function(canvasWidth, canvasHeight, pixelRatio, viewCenter, viewResolution, viewRotation, imageExtent) {   var canvasExtentWidth = canvasWidth * viewResolution; var canvasExtentHeight = canvasHeight * viewResolution;   var projectionMatrix = this.projectionMatrix; goog.vec.Mat4.makeIdentity(projectionMatrix); goog.vec.Mat4.scale(projectionMatrix, pixelRatio * 2 / canvasExtentWidth, pixelRatio * 2 / canvasExtentHeight, 1); goog.vec.Mat4.rotateZ(projectionMatrix, -viewRotation); goog.vec.Mat4.translate(projectionMatrix, imageExtent[0] - viewCenter[0], imageExtent[1] - viewCenter[1], 0); goog.vec.Mat4.scale(projectionMatrix, (imageExtent[2] - imageExtent[0]) / 2, (imageExtent[3] - imageExtent[1]) / 2, 1); goog.vec.Mat4.translate(projectionMatrix, 1, 1, 0);   };     /** * @inheritDoc */ ol.renderer.webgl.ImageLayer.prototype.hasFeatureAtCoordinate = function(coordinate, frameState) { var hasFeature = this.forEachFeatureAtCoordinate( coordinate, frameState, goog.functions.TRUE, this); return hasFeature !== undefined; };     /** * @inheritDoc */ ol.renderer.webgl.ImageLayer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) { if (!this.image_ || !this.image_.getImage()) { return undefined; }   if (this.getLayer().getSource() instanceof ol.source.ImageVector) { // for ImageVector sources use the original hit-detection logic, // so that for example also transparent polygons are detected var coordinate = pixel.slice(); ol.vec.Mat4.multVec2( frameState.pixelToCoordinateMatrix, coordinate, coordinate); var hasFeature = this.forEachFeatureAtCoordinate( coordinate, frameState, goog.functions.TRUE, this);   if (hasFeature) { return callback.call(thisArg, this.getLayer()); } else { return undefined; } } else { var imageSize = [this.image_.getImage().width, this.image_.getImage().height];   if (!this.hitTransformationMatrix_) { this.hitTransformationMatrix_ = this.getHitTransformationMatrix_( frameState.size, imageSize); }   var pixelOnFrameBuffer = [0, 0]; ol.vec.Mat4.multVec2( this.hitTransformationMatrix_, pixel, pixelOnFrameBuffer);   if (pixelOnFrameBuffer[0] < 0 || pixelOnFrameBuffer[0] > imageSize[0] || pixelOnFrameBuffer[1] < 0 || pixelOnFrameBuffer[1] > imageSize[1]) { // outside the image, no need to check return undefined; }   if (!this.hitCanvasContext_) { this.hitCanvasContext_ = ol.dom.createCanvasContext2D(1, 1); }   this.hitCanvasContext_.clearRect(0, 0, 1, 1); this.hitCanvasContext_.drawImage(this.image_.getImage(), pixelOnFrameBuffer[0], pixelOnFrameBuffer[1], 1, 1, 0, 0, 1, 1);   var imageData = this.hitCanvasContext_.getImageData(0, 0, 1, 1).data; if (imageData[3] > 0) { return callback.call(thisArg, this.getLayer()); } else { return undefined; } } };     /** * The transformation matrix to get the pixel on the image for a * pixel on the map. * @param {ol.Size} mapSize * @param {ol.Size} imageSize * @return {goog.vec.Mat4.Number} * @private */ ol.renderer.webgl.ImageLayer.prototype.getHitTransformationMatrix_ = function(mapSize, imageSize) { // the first matrix takes a map pixel, flips the y-axis and scales to // a range between -1 ... 1 var mapCoordMatrix = goog.vec.Mat4.createNumber(); goog.vec.Mat4.makeIdentity(mapCoordMatrix); goog.vec.Mat4.translate(mapCoordMatrix, -1, -1, 0); goog.vec.Mat4.scale(mapCoordMatrix, 2 / mapSize[0], 2 / mapSize[1], 1); goog.vec.Mat4.translate(mapCoordMatrix, 0, mapSize[1], 0); goog.vec.Mat4.scale(mapCoordMatrix, 1, -1, 1);   // the second matrix is the inverse of the projection matrix used in the // shader for drawing var projectionMatrixInv = goog.vec.Mat4.createNumber(); goog.vec.Mat4.invert(this.projectionMatrix, projectionMatrixInv);   // the third matrix scales to the image dimensions and flips the y-axis again var imageCoordMatrix = goog.vec.Mat4.createNumber(); goog.vec.Mat4.makeIdentity(imageCoordMatrix); goog.vec.Mat4.translate(imageCoordMatrix, 0, imageSize[1], 0); goog.vec.Mat4.scale(imageCoordMatrix, 1, -1, 1); goog.vec.Mat4.scale(imageCoordMatrix, imageSize[0] / 2, imageSize[1] / 2, 1); goog.vec.Mat4.translate(imageCoordMatrix, 1, 1, 0);   var transformMatrix = goog.vec.Mat4.createNumber(); goog.vec.Mat4.multMat( imageCoordMatrix, projectionMatrixInv, transformMatrix); goog.vec.Mat4.multMat( transformMatrix, mapCoordMatrix, transformMatrix);   return transformMatrix; };  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Fri Nov 06 2015 19:36:11 GMT+0100 (CET) </div> </div> <script src="../../../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); 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