Added culling sample.

samples/o3d-webgl/element.js

 /*
  * Copyright 2010, 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 14 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 
 /**
  * An Element manages DrawElements for classes inherited from Element.
- * 
+ *
  * @param {!o3d.Material} opt_material The Material used by this Element.
  * @param {!o3d.BoundingBox} opt_boundingBox The BoundingBox used by this
  *     Element for culling.
  * @param {!o3d.Point3} opt_zSortPoint The point to sort by when rendering
  *     this Element in a z ordered DrawPass.
  * @param {boolean} opt_cull Whether or not to attempt to cull this
  *     Element based on whether or not its bounding box is in the view
  *     frustum.
  * @constructor
  */
@@ skipping 92 matching lines @@
 o3d.Element.prototype.__defineGetter__('owner',
     function() {
       return this.owner_;
     }
 );
 
 /**
  * Creates a DrawElement for this Element. Note that unlike
  * Shape.createDrawElements and Transform.createDrawElements this one will
  * create more than one element for the same material.
- * 
+ *
  * @param {!o3d.Pack} pack pack used to manage created DrawElement.
  * @param {!o3d.Material} material material to use for DrawElement. If you
  *     pass null it will use the material on this Element. This allows you
  *     to easily setup the default (just draw as is) by passing null or
  *     setup a shadow pass by passing in a shadow material.
  * @return {!o3d.DrawElement} The created draw element.
  */
 o3d.Element.prototype.createDrawElement =
     function(pack, material) {
-  drawElement = new o3d.DrawElement();
+  drawElement = pack.createObject('DrawElement');
   drawElement.owner = this;
   drawElement.material = material || this.material;
   this.drawElements.push(drawElement);
   return drawElement;
 };
 
 
 /**
  * Computes the intersection of a ray in the same coordinate system as
  * the specified POSITION stream.
@@ skipping 23 matching lines @@
   return this.boundingBox;
 };
 
 
 /**
  * Virtual function that renders the element.
  */
 o3d.Element.prototype.render = function() { };