Some minor JS fixes

samples/o3djs/canvas.js

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 267 matching lines @@
 
   /**
    * A scale transform for this quad.
    * You can change the scale the quad without effecting its positon using
    * this transform.
    * @type {!o3d.Transform}
    */
   this.scaleTransform = canvasInfo.pack.createObject('Transform');
   this.scaleTransform.parent = this.transform;
 
-  // create the texture the canvas will draw on.
-  this.texture = canvasInfo.pack.createTexture2D(
+  /**
+   * The texture the canvas will draw on.
+   * @type {!o3d.Texture2D}
+   */
+  this.texture = /** @type {!o3d.Texture2D} */ (canvasInfo.pack.createTexture2D(
       width,
       height,
       o3djs.base.o3d.Texture.ARGB8,
       1, // mipmap levels
-      false);
+      false));
 
   // Create a Canvas object to go with the quad.
 
   /**
    * The Canvas object used to draw on this quad.
    * @type {!o3d.Canvas}
    */
   this.canvas = canvasInfo.pack.createObject('Canvas');
   this.canvas.setSize(width, height);
 
-  // setup the sampler for the texture
+  /**
+   * The sampler for the texture.
+   * @type {!o3d.Sampler}
+   */
   this.sampler = canvasInfo.pack.createObject('Sampler');
   this.sampler.addressModeU = o3djs.base.o3d.Sampler.CLAMP;
   this.sampler.addressModeV = o3djs.base.o3d.Sampler.CLAMP;
-  this.paramSampler = this.scaleTransform.createParam('texSampler0',
-                                                      'ParamSampler');
-  this.paramSampler.value = this.sampler;
+
+  /**
+   * The param sampler for this transform.
+   * @private
+   * @type {!o3d.ParamSampler}
+   */
+  this.paramSampler_ = this.scaleTransform.createParam('texSampler0',
+                                                       'ParamSampler');
+  this.paramSampler_.value = this.sampler;
 
   this.sampler.texture = this.texture;
   if (transparent) {
     this.scaleTransform.addShape(canvasInfo.transparentQuadShape);
   } else {
     this.scaleTransform.addShape(canvasInfo.opaqueQuadShape);
   }
   this.scaleTransform.translate(width / 2, height / 2, 0);
   this.scaleTransform.scale(width, -height, 1);
 };
@@ skipping 56 matching lines @@
 o3djs.canvas.CanvasInfo.prototype.createQuad = function(width,
                                                         height,
                                                         transparent,
                                                         opt_parent) {
   return new o3djs.canvas.CanvasQuad(this,
                                      width,
                                      height,
                                      transparent,
                                      opt_parent);
 };