First check in of the o3d implimentation in webgl. Classes work well enough to run the hellocube sample.

Review URL: http://codereview.chromium.org/561026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@40133 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 128 insertions, 0 deletions

diff --git a/o3d/samples/o3d-webgl/shape.js b/o3d/samples/o3d-webgl/shape.js
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+/*
+ * 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * 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.
+ */
+
+
+/**
+ * The Shape represents a collection of Elements. The typical example is a
+ * cube with 6 faces where each face uses a different material would be
+ * represented as 1 Shape with 6 Elements, one for each material.
+ * @constructor
+ */
+o3d.Shape = function() {
+  this.elements = [];
+};
+o3d.inherit('Shape', 'ParamObject');
+
+
+/**
+ * The elements owned by this shape.
+ * 
+ * Each access to this field gets the entire list so it is best to get it
+ * just once. For example:
+ * 
+ * var elements = renderNode.elements;
+ * for (var i = 0; i < elements.length; i++) {
+ *   var element = elements[i];
+ * }
+ * 
+ * Note that modifications to this array [e.g. push()] will not affect
+ * the underlying Shape, while modifications to the array's members
+ * will affect them.
+ */
+o3d.Shape.prototype.elements = [];
+
+
+/**
+ * Creates a DrawElement for each Element owned by this Shape.
+ * If an Element already has a DrawElement that uses \a material a new
+ * DrawElement will not be created.
+ * @param {o3d.Pack} pack pack used to manage created DrawElements.
+ * @param {o3d.Material} material material to use for each DrawElement.
+ *     If you pass null it will use the material on the corresponding 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.
+ */
+o3d.Shape.prototype.createDrawElements =
+    function(pack, material) {
+  o3d.notImplemented();
+};
+
+
+/**
+ * Adds and element to the list of elements for this shape.
+ * @param {o3d.Element} element The element to add.
+ */
+o3d.Shape.prototype.addElement = function(element) {
+  this.elements.push(element);
+};
+
+
+/**
+ * Removes and element to the list of elements for this shape.
+ * @param {o3d.Element} element The element to add.
+ */
+o3d.Shape.prototype.removeElement = function(element) {
+  
+};
+
+
+/**
+ * Called when the tree traversal finds this shape in the transform tree.
+ * Adds objects to the given drawlists if the drawlist of the material matches.
+ * @param {Array.<Object>} drawListInfos A list of objects containing
+ *     drawlists and matrix info.
+ * @param {o3d.math.Matrix4} world The world matrix.
+ */
+o3d.Shape.prototype.writeToDrawLists =
+    function(drawListInfos, world, transform) {
+  var elements = this.elements;
+  for (var i = 0; i < elements.length; ++i) {
+    var element = elements[i];
+    for (var j = 0; j < element.drawElements.length; ++j) {
+      var drawElement = element.drawElements[j];
+      var materialDrawList = drawElement.material.drawList;
+      for (var k = 0; k < drawListInfos.length; ++k) {
+        var drawListInfo = drawListInfos[k];
+        var list = drawListInfo.list;
+        var context = drawListInfo.context;
+        if (materialDrawList == list) {
+          list.list_.push({
+            view: context.view,
+            projection: context.projection,
+            world: world,
+            transform: transform,
+            drawElement: drawElement
+          });
+        }
+      }
+    }
+  }
+};