s/ol3/ol/

src/ol/tilecoveragearea.js

@@ -0,0 +1,71 @@
+goog.provide('ol.TileCoverageArea');
+
+goog.require('ol.CoverageArea');
+goog.require('ol.Extent');
+goog.require('ol.TileGrid');
+
+
+
+/**
+ * @constructor
+ * @extends {ol.CoverageArea}
+ * @param {ol.TileGrid} tileGrid Tile grid.
+ * @param {ol.Extent} extent Extent.
+ * @param {number} minZ Minimum Z.
+ * @param {number} maxZ Maximum Z.
+ */
+ol.TileCoverageArea = function(tileGrid, extent, minZ, maxZ) {
+
+  goog.base(this, extent);
+
+  /**
+   * @private
+   * @type {ol.TileGrid}
+   */
+  this.tileGrid_ = tileGrid;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.minZ_ = minZ;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.maxZ_ = maxZ;
+
+};
+goog.inherits(ol.TileCoverageArea, ol.CoverageArea);
+
+
+/**
+ * @inheritDoc
+ */
+ol.TileCoverageArea.prototype.intersectsExtentAndResolution =
+    function(extent, resolution) {
+  var z = this.tileGrid_.getZForResolution(resolution);
+  return this.intersectsExtentAndZ(extent, z);
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number} z Z.
+ * @return {boolean} Intersects.
+ */
+ol.TileCoverageArea.prototype.intersectsExtentAndZ = function(extent, z) {
+  return this.minZ_ <= z && z <= this.maxZ_ && this.intersectsExtent(extent);
+};
+
+
+/**
+ * @param {ol.TransformFunction} transformFn Transform.
+ * @return {ol.TileCoverageArea} Transformed tile coverage area.
+ */
+ol.TileCoverageArea.prototype.transform = function(transformFn) {
+  var extent = this.extent.transform(transformFn);
+  return new ol.TileCoverageArea(
+      this.tileGrid_, extent, this.minZ_, this.maxZ_);
+};