Reuse tile range

2013-06-24 11:34:59 -06:00
parent a9f01a4390
commit 20527ab1f1
1 changed files with 3 additions and 3 deletions
--- a/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
+++ b/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
@@ -159,7 +159,7 @@ ol.renderer.canvas.VectorLayer = function(mapRenderer, layer) {
   * @private
   * @type {ol.TileRange}
   */
-  this.tileRange_ = null;
+  this.tileRange_ = new ol.TileRange(NaN, NaN, NaN, NaN);

  /**
   * @private
@@ -360,8 +360,8 @@ ol.renderer.canvas.VectorLayer.prototype.renderFrame =
  // set up transform for the layer canvas to be drawn to the map canvas
  var tileResolution = tileGrid.getResolution(0);
  if (idle) {
-    this.tileRange_ = tileGrid.getTileRangeForExtentAndResolution(
-        extent, tileResolution);
+    tileGrid.getTileRangeForExtentAndResolution(
+        extent, tileResolution, this.tileRange_);
  }
  var transform = this.transform_,
      tileRange = this.tileRange_,