Avoid left shift in resolution calculations

2013-02-18 18:37:27 -07:00
parent 4c2463dd91
commit 0a5dae9ed0
4 changed files with 36 additions and 4 deletions
@@ -17,9 +17,9 @@ ol.tilegrid.XYZ = function(xyzOptions) {

  var resolutions = new Array(xyzOptions.maxZoom + 1);
  var z;
+  var size = 2 * ol.Projection.EPSG_3857_HALF_SIZE / ol.DEFAULT_TILE_SIZE;
  for (z = 0; z <= xyzOptions.maxZoom; ++z) {
-    resolutions[z] =
-        2 * ol.Projection.EPSG_3857_HALF_SIZE / (ol.DEFAULT_TILE_SIZE << z);
+    resolutions[z] = size / Math.pow(2, z);
  }

  goog.base(this, {