Merge pull request #258 from bbinet/tilegrid-tilesizes

Add support for multiple tileSizes in the tilegrid

src/ol/renderer/canvas/canvastilelayerrenderer.js

@@ -91,8 +91,8 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
   var tileSource = tileLayer.getTileSource();
   var tileSourceKey = goog.getUid(tileSource).toString();
   var tileGrid = tileSource.getTileGrid();
-  var tileSize = tileGrid.getTileSize();
   var z = tileGrid.getZForResolution(view2DState.resolution);
+  var tileSize = tileGrid.getTileSize(z);
   var tileResolution = tileGrid.getResolution(z);
   var tileRange = tileGrid.getTileRangeForExtentAndResolution(
       frameState.extent, tileResolution);
@@ -174,6 +174,7 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
   var currentZ, i, scale, tileCoordKey, tileExtent, tilesToDraw;
   for (i = 0; i < zs.length; ++i) {
     currentZ = zs[i];
+    tileSize = tileGrid.getTileSize(currentZ);
     tilesToDraw = tilesToDrawByZ[currentZ];
     if (currentZ == z) {
       for (tileCoordKey in tilesToDraw) {

src/ol/renderer/dom/domtilelayerrenderer.js

@@ -138,7 +138,6 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
   /** @type {Object.<number, boolean>} */
   var newTileLayerZKeys = {};
 
-  var tileSize = tileGrid.getTileSize();
   var iz, tileCoordKey, tileCoordOrigin, tileLayerZ, tileLayerZKey, tilesToDraw;
   for (iz = 0; iz < zs.length; ++iz) {
     tileLayerZKey = zs[iz];
@@ -293,7 +292,7 @@ ol.renderer.dom.TileLayerZ_.prototype.addTile = function(tile) {
   if (tileCoordKey in this.tiles_) {
     return;
   }
-  var tileSize = this.tileGrid_.getTileSize();
+  var tileSize = this.tileGrid_.getTileSize(tileCoord.z);
   var image = tile.getImage(this);
   var style = image.style;
   style.position = 'absolute';

src/ol/renderer/webgl/webgltilelayerrenderer.js

@@ -299,7 +299,7 @@ ol.renderer.webgl.TileLayer.prototype.renderFrame =
   } else {
 
     var tileRangeSize = tileRange.getSize();
-    var tileSize = tileGrid.getTileSize();
+    var tileSize = tileGrid.getTileSize(z);
 
     var maxDimension = Math.max(
         tileRangeSize.width * tileSize.width,