Merge pull request #3747 from ahocevar/tilecoordtransform

Make tileCoordTransform a member again

src/ol/source/bingmapssource.js

@@ -115,7 +115,7 @@ ol.source.BingMaps.prototype.handleImageryMetadataResponse =
 
   var culture = this.culture_;
   this.tileUrlFunction = ol.TileUrlFunction.withTileCoordTransform(
-      ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid),
+      tileGrid.createTileCoordTransform(),
       ol.TileUrlFunction.createFromTileUrlFunctions(
           goog.array.map(
               resource.imageUrlSubdomains,

src/ol/source/tilejsonsource.js

@@ -76,7 +76,7 @@ ol.source.TileJSON.prototype.handleTileJSONResponse = function(tileJSON) {
   this.tileGrid = tileGrid;
 
   this.tileUrlFunction = ol.TileUrlFunction.withTileCoordTransform(
-      ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid),
+      tileGrid.createTileCoordTransform(),
       ol.TileUrlFunction.createFromTemplates(tileJSON.tiles));
 
   if (goog.isDef(tileJSON.attribution) &&

src/ol/source/tileutfgridsource.js

@@ -137,7 +137,7 @@ ol.source.TileUTFGrid.prototype.handleTileJSONResponse = function(tileJSON) {
   }
 
   this.tileUrlFunction_ = ol.TileUrlFunction.withTileCoordTransform(
-      ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid),
+      tileGrid.createTileCoordTransform(),
       ol.TileUrlFunction.createFromTemplates(grids));
 
   if (goog.isDef(tileJSON.attribution)) {

src/ol/source/xyzsource.js

@@ -41,8 +41,7 @@ ol.source.XYZ = function(options) {
    * @private
    * @type {ol.TileCoordTransformType}
    */
-  this.tileCoordTransform_ =
-      ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid);
+  this.tileCoordTransform_ = tileGrid.createTileCoordTransform();
 
   if (goog.isDef(options.tileUrlFunction)) {
     this.setTileUrlFunction(options.tileUrlFunction);

src/ol/tilegrid/tilegrid.js

@@ -2,6 +2,7 @@ goog.provide('ol.tilegrid.TileGrid');
 
 goog.require('goog.array');
 goog.require('goog.asserts');
+goog.require('goog.functions');
 goog.require('goog.math');
 goog.require('goog.object');
 goog.require('ol');
@@ -69,10 +70,14 @@ ol.tilegrid.TileGrid = function(options) {
     goog.asserts.assert(this.origins_.length == this.resolutions_.length,
         'number of origins and resolutions must be equal');
   }
-  if (goog.isNull(this.origins_) && goog.isNull(this.origin_) &&
-      goog.isDef(options.extent)) {
-    this.origin_ = ol.extent.getBottomLeft(options.extent);
+
+  var extent = options.extent;
+
+  if (goog.isDef(extent) &&
+      goog.isNull(this.origin_) && goog.isNull(this.origins_)) {
+    this.origin_ = ol.extent.getBottomLeft(extent);
   }
+
   goog.asserts.assert(
       (goog.isNull(this.origin_) && !goog.isNull(this.origins_)) ||
       (!goog.isNull(this.origin_) && goog.isNull(this.origins_)),
@@ -101,14 +106,24 @@ ol.tilegrid.TileGrid = function(options) {
       (!goog.isNull(this.tileSize_) && goog.isNull(this.tileSizes_)),
       'either tileSize or tileSizes must be configured, never both');
 
-  var extent = options.extent;
-
   /**
    * @private
    * @type {ol.Extent}
    */
   this.extent_ = goog.isDef(extent) ? extent : null;
 
+
+  /**
+   * TileCoord transform function for use with this tile grid. Returns unaltered
+   * tile coordinates by default.
+   * @param {{extent: (ol.Extent|undefined)}=} opt_options Options.
+   * @return {function(ol.TileCoord, ol.proj.Projection, ol.TileCoord=):
+   *     ol.TileCoord} Tile coordinate transform.
+   */
+  this.createTileCoordTransform = goog.isDef(options.createTileCoordTransform) ?
+      options.createTileCoordTransform :
+      goog.functions.identity;
+
   /**
    * @private
    * @type {Array.<ol.TileRange>}
@@ -133,18 +148,8 @@ ol.tilegrid.TileGrid = function(options) {
       }
       return tileRange;
     }, this);
-  } else if (goog.isDef(extent)) {
-    var extentWidth = ol.extent.getWidth(extent);
-    var extentHeight = ol.extent.getHeight(extent);
-    var fullTileRanges = new Array(this.resolutions_.length);
-    var tileSize;
-    for (var z = 0, zz = fullTileRanges.length; z < zz; ++z) {
-      tileSize = ol.size.toSize(this.getTileSize(z), this.tmpSize_);
-      fullTileRanges[z] = new ol.TileRange(
-          0, Math.ceil(extentWidth / tileSize[0] / this.resolutions_[z]) - 1,
-          0, Math.ceil(extentHeight / tileSize[1] / this.resolutions_[z]) - 1);
-    }
-    this.fullTileRanges_ = fullTileRanges;
+  } else if (goog.isDefAndNotNull(extent)) {
+    this.calculateTileRanges_(extent);
   }
 
   /**
@@ -163,16 +168,6 @@ ol.tilegrid.TileGrid = function(options) {
 ol.tilegrid.TileGrid.tmpTileCoord_ = [0, 0, 0];
 
 
-/**
- * Source specific TileCoord transform function. May be implemented by
- * subclasses.
- * @param {{extent: (ol.Extent|undefined)}=} opt_options Options.
- * @return {function(ol.TileCoord, ol.proj.Projection, ol.TileCoord=):
- *     ol.TileCoord} Tile coordinate transform.
- */
-ol.tilegrid.TileGrid.prototype.createTileCoordTransform = goog.abstractMethod;
-
-
 /**
  * @param {ol.TileCoord} tileCoord Tile coordinate.
  * @param {function(this: T, number, ol.TileRange): boolean} callback Callback.
@@ -505,6 +500,25 @@ ol.tilegrid.TileGrid.prototype.getZForResolution = function(resolution) {
 };
 
 
+/**
+ * @param {!ol.Extent} extent Extent for this tile grid.
+ * @private
+ */
+ol.tilegrid.TileGrid.prototype.calculateTileRanges_ = function(extent) {
+  var extentWidth = ol.extent.getWidth(extent);
+  var extentHeight = ol.extent.getHeight(extent);
+  var fullTileRanges = new Array(this.resolutions_.length);
+  var tileSize;
+  for (var z = 0, zz = fullTileRanges.length; z < zz; ++z) {
+    tileSize = ol.size.toSize(this.getTileSize(z), this.tmpSize_);
+    fullTileRanges[z] = new ol.TileRange(
+        0, Math.ceil(extentWidth / tileSize[0] / this.resolutions_[z]) - 1,
+        0, Math.ceil(extentHeight / tileSize[1] / this.resolutions_[z]) - 1);
+  }
+  this.fullTileRanges_ = fullTileRanges;
+};
+
+
 /**
  * @param {ol.proj.Projection} projection Projection.
  * @return {ol.tilegrid.TileGrid} Default tile grid for the passed projection.
@@ -562,6 +576,17 @@ ol.tilegrid.createXYZ = function(opt_options) {
   options.resolutions = ol.tilegrid.resolutionsFromExtent(
       options.extent, options.maxZoom, options.tileSize);
   delete options.maxZoom;
+
+  /**
+   * @param {{extent: (ol.Extent|undefined)}=} opt_options Options.
+   * @return {function(ol.TileCoord, ol.proj.Projection, ol.TileCoord=):
+   *     ol.TileCoord} Tile coordinate transform.
+   * @this {ol.tilegrid.TileGrid}
+   */
+  options.createTileCoordTransform = function(opt_options) {
+    return ol.tilegrid.createOriginTopLeftTileCoordTransform(this);
+  };
+
   return new ol.tilegrid.TileGrid(options);
 };
 

src/ol/tilegrid/zoomifytilegrid.js

@@ -19,61 +19,65 @@ goog.require('ol.tilegrid.TileGrid');
  */
 ol.tilegrid.Zoomify = function(opt_options) {
   var options = goog.isDef(opt_options) ? opt_options : options;
+
+  /**
+   * @param {{extent: (ol.Extent|undefined)}=} opt_options Options.
+   * @return {function(ol.TileCoord, ol.proj.Projection, ol.TileCoord=):
+   *     ol.TileCoord} Tile coordinate transform.
+   * @this {ol.tilegrid.Zoomify}
+   */
+  var createTileCoordTransform = function(opt_options) {
+    var options = goog.isDef(opt_options) ? opt_options : {};
+    var minZ = this.minZoom;
+    var maxZ = this.maxZoom;
+    /** @type {Array.<ol.TileRange>} */
+    var tileRangeByZ = null;
+    if (goog.isDef(options.extent)) {
+      tileRangeByZ = new Array(maxZ + 1);
+      var z;
+      for (z = 0; z <= maxZ; ++z) {
+        if (z < minZ) {
+          tileRangeByZ[z] = null;
+        } else {
+          tileRangeByZ[z] = this.getTileRangeForExtentAndZ(options.extent, z);
+        }
+      }
+    }
+    return (
+        /**
+         * @param {ol.TileCoord} tileCoord Tile coordinate.
+         * @param {ol.proj.Projection} projection Projection.
+         * @param {ol.TileCoord=} opt_tileCoord Destination tile coordinate.
+         * @return {ol.TileCoord} Tile coordinate.
+         */
+        function(tileCoord, projection, opt_tileCoord) {
+          var z = tileCoord[0];
+          if (z < minZ || maxZ < z) {
+            return null;
+          }
+          var n = Math.pow(2, z);
+          var x = tileCoord[1];
+          if (x < 0 || n <= x) {
+            return null;
+          }
+          var y = tileCoord[2];
+          if (y < -n || -1 < y) {
+            return null;
+          }
+          if (!goog.isNull(tileRangeByZ)) {
+            if (!tileRangeByZ[z].containsXY(x, -y - 1)) {
+              return null;
+            }
+          }
+          return ol.tilecoord.createOrUpdate(z, x, -y - 1, opt_tileCoord);
+        });
+  };
+
   goog.base(this, {
+    createTileCoordTransform: createTileCoordTransform,
     origin: [0, 0],
     resolutions: options.resolutions
   });
 
 };
 goog.inherits(ol.tilegrid.Zoomify, ol.tilegrid.TileGrid);
-
-
-/**
- * @inheritDoc
- */
-ol.tilegrid.Zoomify.prototype.createTileCoordTransform = function(opt_options) {
-  var options = goog.isDef(opt_options) ? opt_options : {};
-  var minZ = this.minZoom;
-  var maxZ = this.maxZoom;
-  /** @type {Array.<ol.TileRange>} */
-  var tileRangeByZ = null;
-  if (goog.isDef(options.extent)) {
-    tileRangeByZ = new Array(maxZ + 1);
-    var z;
-    for (z = 0; z <= maxZ; ++z) {
-      if (z < minZ) {
-        tileRangeByZ[z] = null;
-      } else {
-        tileRangeByZ[z] = this.getTileRangeForExtentAndZ(options.extent, z);
-      }
-    }
-  }
-  return (
-      /**
-       * @param {ol.TileCoord} tileCoord Tile coordinate.
-       * @param {ol.proj.Projection} projection Projection.
-       * @param {ol.TileCoord=} opt_tileCoord Destination tile coordinate.
-       * @return {ol.TileCoord} Tile coordinate.
-       */
-      function(tileCoord, projection, opt_tileCoord) {
-        var z = tileCoord[0];
-        if (z < minZ || maxZ < z) {
-          return null;
-        }
-        var n = Math.pow(2, z);
-        var x = tileCoord[1];
-        if (x < 0 || n <= x) {
-          return null;
-        }
-        var y = tileCoord[2];
-        if (y < -n || -1 < y) {
-          return null;
-        }
-        if (!goog.isNull(tileRangeByZ)) {
-          if (!tileRangeByZ[z].containsXY(x, -y - 1)) {
-            return null;
-          }
-        }
-        return ol.tilecoord.createOrUpdate(z, x, -y - 1, opt_tileCoord);
-      });
-};