Give each source file a unique name

2012-10-25 19:03:04 +02:00
parent af872e25c3
commit e5d39724c9
31 changed files with 0 additions and 0 deletions
@@ -0,0 +1,64 @@
+goog.provide('ol.tilegrid.XYZ');
+goog.provide('ol.tilegrid.XYZOptions');
+
+goog.require('ol.Coordinate');
+goog.require('ol.Projection');
+goog.require('ol.Size');
+goog.require('ol.TileRange');
+goog.require('ol.tilegrid.TileGrid');
+
+
+/**
+ * @typedef {{maxZoom: number}}
+ */
+ol.tilegrid.XYZOptions;
+
+
+
+/**
+ * @constructor
+ * @extends {ol.tilegrid.TileGrid}
+ * @param {ol.tilegrid.XYZOptions} xyzOptions XYZ options.
+ */
+ol.tilegrid.XYZ = function(xyzOptions) {
+
+  var resolutions = new Array(xyzOptions.maxZoom + 1);
+  var z;
+  for (z = 0; z <= xyzOptions.maxZoom; ++z) {
+    resolutions[z] = ol.Projection.EPSG_3857_HALF_SIZE / (128 << z);
+  }
+
+  goog.base(this, {
+    extent: ol.Projection.EPSG_3857_EXTENT,
+    origin: new ol.Coordinate(-ol.Projection.EPSG_3857_HALF_SIZE,
+                              ol.Projection.EPSG_3857_HALF_SIZE),
+    resolutions: resolutions,
+    tileSize: new ol.Size(256, 256)
+  });
+
+};
+goog.inherits(ol.tilegrid.XYZ, ol.tilegrid.TileGrid);
+
+
+/**
+ * @inheritDoc
+ */
+ol.tilegrid.XYZ.prototype.forEachTileCoordParentTileRange =
+    function(tileCoord, callback, opt_obj) {
+  var x = tileCoord.x;
+  var y = tileCoord.y;
+  var z = tileCoord.z;
+  var tileRange;
+  while (true) {
+    z -= 1;
+    if (z < 0) {
+      break;
+    }
+    x = Math.floor(x / 2);
+    y = Math.floor(y / 2);
+    tileRange = new ol.TileRange(x, y, x, y);
+    if (callback.call(opt_obj, z, tileRange)) {
+      break;
+    }
+  }
+};