From 22cbc9644b79df60b3f6336f9563debd47fb3ea1 Mon Sep 17 00:00:00 2001
From: hwc487
Date: Thu, 28 Jun 2012 11:44:15 -0700
Subject: Added capability to split a mesh into multiiple parts to avoid buffer
 overflow situations.

---
 js/lib/drawing/world.js | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

(limited to 'js/lib/drawing')

diff --git a/js/lib/drawing/world.js b/js/lib/drawing/world.js
index 8068284e..39f97134 100755
--- a/js/lib/drawing/world.js
+++ b/js/lib/drawing/world.js
@@ -442,6 +442,7 @@ World.prototype.updateObject = function (obj) {
 	if (prims.length != materialNodes.length)
 		throw new Error("inconsistent material and primitive counts");
 	var nPrims = prims.length;
+	var iPrim = 0;
 	var ctrTrNode;
 	if (nPrims > 0)
 	{
@@ -459,8 +460,12 @@ World.prototype.updateObject = function (obj) {
 		);
 		ctrTrNode.meshes = [];
 
-		ctrTrNode.attachMeshNode(this.renderer.id + "_prim_" + this._nodeCounter++, prims[0]);
 		ctrTrNode.attachMaterial(materialNodes[0]);
+		while ((iPrim < nPrims) && (materialNodes[iPrim] == materialNodes[0]))
+		{
+			ctrTrNode.attachMeshNode(this.renderer.id + "_prim_" + this._nodeCounter++, prims[iPrim]);
+			iPrim++;
+		}
 	}
 	
 	// delete all of the child nodes
@@ -481,16 +486,18 @@ World.prototype.updateObject = function (obj) {
 	}
 	ctrTrNode.children = [];
 
-	for (var i = 1; i < nPrims; i++)
+	while (iPrim < nPrims)
 	{
-		// get the next primitive
 		childTrNode = RDGE.createTransformNode("objNode_" + this._nodeCounter++);
 		ctrTrNode.insertAsChild(childTrNode);
+		var matNode = materialNodes[iPrim];
+		childTrNode.attachMaterial(matNode);
 
-		// attach the instanced box goe
-		var prim = prims[i];
-		childTrNode.attachMeshNode(this.renderer.id + "_prim_" + this._nodeCounter++, prim);
-		childTrNode.attachMaterial(materialNodes[i]);
+		while ((iPrim < nPrims) && (materialNodes[iPrim] == matNode))
+		{
+			childTrNode.attachMeshNode(this.renderer.id + "_prim_" + this._nodeCounter++, prims[iPrim]);
+			iPrim++;
+		}
 	}
 
 	// send a notification that the tree has changed
-- 
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