Fix for jumping issue when moving items that have any 3d on them.

We can't translate 3d moves into 2d space due to perspective, so we must update the matrix3d values instead of the top-left values if items have 3d.

Signed-off-by: Nivesh Rajbhandari <mqg734@motorola.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/js/helper-classes/3D/math-utils.js b/js/helper-classes/3D/math-utils.js
index 37044763..de63f880 100755
--- a/js/helper-classes/3D/math-utils.js
+++ b/js/helper-classes/3D/math-utils.js
@@ -538,6 +538,39 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, {
         }
     },
 
+    isIdentityMatrix: {
+        value: function( mat )
+        {
+            if(!mat)
+            {
+                return false;
+            }
+            else
+            {
+                if(mat[0] !== 1) return false;
+                if(mat[1] !== 0) return false;
+                if(mat[2] !== 0) return false;
+                if(mat[3] !== 0) return false;
+
+                if(mat[4] !== 0) return false;
+                if(mat[5] !== 1) return false;
+                if(mat[6] !== 0) return false;
+                if(mat[7] !== 0) return false;
+
+                if(mat[8] !== 0) return false;
+                if(mat[9] !== 0) return false;
+                if(mat[10] !== 1) return false;
+                if(mat[11] !== 0) return false;
+
+                if(mat[12] !== 0) return false;
+                if(mat[13] !== 0) return false;
+                if(mat[14] !== 0) return false;
+                if(mat[15] !== 1) return false;
+            }
+            return true;
+        }
+    },
+
         rectsOverlap:
         {
                 value: function( pt, width, height,  elt )