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>

1 files changed, 1 insertions, 0 deletions

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;