From ecd5158012e95e1ed156e653f49fb57db7a4a508 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Thu, 21 Mar 2013 00:02:15 +0100
Subject: [PATCH] Add ol.renderer.webgl.Layer.getWebGLMapRenderer

This improves the type checking.
---
 src/ol/renderer/webgl/webglimagelayerrenderer.js |  6 +++---
 src/ol/renderer/webgl/webgllayerrenderer.js      | 12 +++++-------
 src/ol/renderer/webgl/webgltilelayerrenderer.js  |  4 ++--
 3 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/src/ol/renderer/webgl/webglimagelayerrenderer.js b/src/ol/renderer/webgl/webglimagelayerrenderer.js
index 8ee70879ad..e09dd3a070 100644
--- a/src/ol/renderer/webgl/webglimagelayerrenderer.js
+++ b/src/ol/renderer/webgl/webglimagelayerrenderer.js
@@ -56,7 +56,7 @@ ol.renderer.webgl.ImageLayer.prototype.createTexture_ = function(image) {
   // http://learningwebgl.com/blog/?p=2101
 
   var imageElement = image.getImageElement(this);
-  var gl = this.getMapRenderer().getGL();
+  var gl = this.getWebGLMapRenderer().getGL();
 
   var texture = gl.createTexture();
 
@@ -109,7 +109,7 @@ ol.renderer.webgl.ImageLayer.prototype.getImageLayer = function() {
 ol.renderer.webgl.ImageLayer.prototype.renderFrame =
     function(frameState, layerState) {
 
-  var gl = this.getMapRenderer().getGL();
+  var gl = this.getWebGLMapRenderer().getGL();
 
   var view2DState = frameState.view2DState;
   var viewCenter = view2DState.center;
@@ -150,7 +150,7 @@ ol.renderer.webgl.ImageLayer.prototype.renderFrame =
   if (!goog.isNull(image)) {
     goog.asserts.assert(!goog.isNull(texture));
 
-    var canvas = this.getMapRenderer().getCanvas();
+    var canvas = this.getWebGLMapRenderer().getCanvas();
 
     this.updateProjectionMatrix_(canvas.width, canvas.height,
         viewCenter, viewResolution, viewRotation, image.getExtent());
diff --git a/src/ol/renderer/webgl/webgllayerrenderer.js b/src/ol/renderer/webgl/webgllayerrenderer.js
index a6df24c308..e639e6199b 100644
--- a/src/ol/renderer/webgl/webgllayerrenderer.js
+++ b/src/ol/renderer/webgl/webgllayerrenderer.js
@@ -91,7 +91,7 @@ goog.inherits(ol.renderer.webgl.Layer, ol.renderer.Layer);
 ol.renderer.webgl.Layer.prototype.bindFramebuffer =
     function(frameState, framebufferDimension) {
 
-  var mapRenderer = this.getMapRenderer();
+  var mapRenderer = this.getWebGLMapRenderer();
   var gl = mapRenderer.getGL();
 
   if (!goog.isDef(this.framebufferDimension) ||
@@ -136,7 +136,7 @@ ol.renderer.webgl.Layer.prototype.bindFramebuffer =
  * @inheritDoc
  */
 ol.renderer.webgl.Layer.prototype.disposeInternal = function() {
-  var mapRenderer = this.getMapRenderer();
+  var mapRenderer = this.getWebGLMapRenderer();
   var gl = mapRenderer.getGL();
   if (!gl.isContextLost()) {
     gl.deleteBuffer(this.arrayBuffer_);
@@ -157,12 +157,10 @@ ol.renderer.webgl.Layer.prototype.getColorMatrix = function() {
 
 
 /**
- * @inheritDoc
- * @return {ol.renderer.Map} MapRenderer.
+ * @return {ol.renderer.webgl.Map} MapRenderer.
  */
-ol.renderer.webgl.Layer.prototype.getMapRenderer = function() {
-  return /** @type {ol.renderer.webgl.Map} */ (goog.base(
-      this, 'getMapRenderer'));
+ol.renderer.webgl.Layer.prototype.getWebGLMapRenderer = function() {
+  return /** @type {ol.renderer.webgl.Map} */ (this.getMapRenderer());
 };
 
 
diff --git a/src/ol/renderer/webgl/webgltilelayerrenderer.js b/src/ol/renderer/webgl/webgltilelayerrenderer.js
index caf3e1d48e..99419f4447 100644
--- a/src/ol/renderer/webgl/webgltilelayerrenderer.js
+++ b/src/ol/renderer/webgl/webgltilelayerrenderer.js
@@ -149,7 +149,7 @@ goog.inherits(ol.renderer.webgl.TileLayer, ol.renderer.webgl.Layer);
  * @inheritDoc
  */
 ol.renderer.webgl.TileLayer.prototype.disposeInternal = function() {
-  var mapRenderer = this.getMapRenderer();
+  var mapRenderer = this.getWebGLMapRenderer();
   var gl = mapRenderer.getGL();
   if (!gl.isContextLost()) {
     gl.deleteBuffer(this.arrayBuffer_);
@@ -198,7 +198,7 @@ ol.renderer.webgl.TileLayer.prototype.handleWebGLContextLost = function() {
 ol.renderer.webgl.TileLayer.prototype.renderFrame =
     function(frameState, layerState) {
 
-  var mapRenderer = this.getMapRenderer();
+  var mapRenderer = this.getWebGLMapRenderer();
   var gl = mapRenderer.getGL();
 
   var view2DState = frameState.view2DState;