From 7283884c39df537694b21419a3ea9e3ca7793b4b Mon Sep 17 00:00:00 2001
From: Ananya Sen
Date: Thu, 23 Feb 2012 13:43:35 -0800
Subject: switch html document - re-initialize draw-utils and snap-manager on
 opening a document and while switching documents

Signed-off-by: Ananya Sen <Ananya.Sen@motorola.com>
---
 js/helper-classes/3D/draw-utils.js   | 20 ++++++++++++++++++++
 js/helper-classes/3D/snap-manager.js |  1 +
 2 files changed, 21 insertions(+)

(limited to 'js/helper-classes/3D')

diff --git a/js/helper-classes/3D/draw-utils.js b/js/helper-classes/3D/draw-utils.js
index c07391db..37fc1cfc 100755
--- a/js/helper-classes/3D/draw-utils.js
+++ b/js/helper-classes/3D/draw-utils.js
@@ -115,6 +115,26 @@ var DrawUtils = exports.DrawUtils = Montage.create(Component, {
 		}
 	},
 
+    initializeFromDocument:{
+        value:function(){
+            var documentRootChildren = null, i;
+            //initialize with current document
+            this._eltArray = [];
+            this._planesArray = [];
+            this.setDrawingSurfaceElement(this.application.ninja.stage.canvas);
+            this.setSourceSpaceElement( this.application.ninja.stage.stageDeps.currentStage );
+            this.setWorkingPlane( Vector.create( [0,0,1,0] ) );
+
+            //Loop through all the top-level children of the current document and call drawUtils.addElement on them
+            if(this.application.ninja.currentDocument.documentRoot.hasChildNodes()){
+                documentRootChildren = this.application.ninja.currentDocument.documentRoot.childNodes;
+                for(i=0;i<documentRootChildren.length;i++){
+                    this.addElement(documentRootChildren[i]);
+                }
+            }
+        }
+    },
+
     handleElementAdded: {
         value: function(event) {
             this.addElement(event.detail);
diff --git a/js/helper-classes/3D/snap-manager.js b/js/helper-classes/3D/snap-manager.js
index 0a950658..45a178ce 100755
--- a/js/helper-classes/3D/snap-manager.js
+++ b/js/helper-classes/3D/snap-manager.js
@@ -1087,6 +1087,7 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
 
 			// we need to check the orientation of the bounds
 			var nrm = MathUtils.getNormalFromBounds3D( bounds3D );
+            if (MathUtils.fpSign(nrm[2]) == 0)  return null;
 			var zNrm = nrm[2];
 			var dist;
 
-- 
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