16 files changed, 602 insertions, 260 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 )
diff --git a/js/helper-classes/3D/snap-manager.js b/js/helper-classes/3D/snap-manager.js
index 372be345..596ba56a 100755
--- a/js/helper-classes/3D/snap-manager.js
+++ b/js/helper-classes/3D/snap-manager.js
@@ -40,6 +40,7 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
 
         // keep a reference to the most recent hitRecord.  Used for drawing feedback on the stage
         _lastHit : { value: null, writable: true },
+        _hitRecords : { value: [], writable: true },
 
         // keep a list of objects to avoid snapping to
         _avoidList : { value: [], writable: true },
@@ -274,6 +275,11 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
                         }       //if (hitRecArray.length == 0)
 
                         var rtnHit;
+
+            // Save reference to hit records to verify last hit record's element matches browser's elementFromPoint
+            this._hitRecords.length = 0;
+            this._hitRecords = hitRecArray;
+
                         if (hitRecArray.length > 0)
                         {
                                 this.sortHitRecords( hitRecArray );
@@ -2246,6 +2252,30 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
                                 drawUtils.setDrawingSurfaceElement(saveContext);
                         }
                 }
-        }
+        },
+
+    findHitRecordForElement: {
+        value: function(elt) {
+            var rtnHit;
+
+            if (!this._hitRecords)  return;
+            var nHits = this._hitRecords.length;
+
+            for (var i=0;  i<nHits;  i++)
+            {
+                var hi = this._hitRecords[i];
+                if(hi.getElement() === elt)
+                {
+                    rtnHit = hi;
+                    break;
+                }
+            }
+            // catch-all to turn off drag plane snapping
+            this.deactivateDragPlane();
+
+            this.setLastHit( rtnHit );
+            return rtnHit;
+        }
+    }
 
 });
diff --git a/js/panels/Timeline/Collapser.js b/js/panels/Timeline/Collapser.js
index 5de884a9..ad490c2e 100644
--- a/js/panels/Timeline/Collapser.js
+++ b/js/panels/Timeline/Collapser.js
@@ -184,6 +184,10 @@ var Montage = require("montage/core/core").Montage,
                         // Get the original value of the overflow property:
                         this._origOverflowValue = window.getComputedStyle(this.myContent, null).getPropertyValue("overflow");
                         
+                        /*
+                         * Removed because of expense. This disables the feature of having the
+                         * component dynamically expand/collapse the content on init based on properties;
+                         * Now default state of component must be set in CSS.
                         // If the content area is supposed to start out collapsed:
                         if (this.isCollapsed) {
                                 this.myContent.style.height = "0px";
@@ -198,6 +202,7 @@ var Montage = require("montage/core/core").Montage,
                                 this.myContent.classList.remove(this.collapsedClass);
                                 this.clicker.classList.remove(this.collapsedClass);
                         }
+                        */
                 }
         },
         draw: {
diff --git a/js/panels/Timeline/Layer.reel/Layer.html b/js/panels/Timeline/Layer.reel/Layer.html
index 0bd448f7..14315f8d 100644
--- a/js/panels/Timeline/Layer.reel/Layer.html
+++ b/js/panels/Timeline/Layer.reel/Layer.html
@@ -226,6 +226,8 @@
                             }
                         }
                                 }
+                                
+                                
             }
         </script>
         </head>
@@ -241,9 +243,9 @@
                         <div class="collapsible-content content-layer collapsible-collapsed">
                                 <div class="label-position">
                                         <span class="collapsible-label">Position</span>
-                                        <span class="collapsible-clicker clicker-position"></span>
+                                        <span class="collapsible-clicker clicker-position collapsible-collapsed"></span>
                                 </div>
-                                <div class="content-position collapsible-content">
+                                <div class="content-position collapsible-content collapsible-collapsed">
                                         <div class="layout-table">
                                                 <div class="layout-row">
                                                         <div class="layout-cell">X</div>
@@ -257,9 +259,9 @@
                                 </div>
                                 <div class="label-transform">
                                         <span class="collapsible-label">Transform</span>
-                                        <span class="clicker-transform collapsible-clicker"></span>
+                                        <span class="clicker-transform collapsible-clicker collapsible-collapsed"></span>
                                 </div>
-                                <div class="content-transform collapsible-content">
+                                <div class="content-transform collapsible-content collapsible-collapsed">
                                         <div class="layout-table">
                                                 <div class="layout-row">
                                                         <div class="layout-cell">Scale X</div>
@@ -286,11 +288,11 @@
                                 </div>
                                 <div class="label-style">
                                         <span class="collapsible-label">Style</span>
-                                        <span class="clicker-style collapsible-clicker"></span>
+                                        <span class="clicker-style collapsible-clicker collapsible-collapsed"></span>
                                         <div class="cssbutton button-delete disabled"></div>
                                         <div class="cssbutton button-add"></div>
                                 </div>
-                                <div class="content-style collapsible-content">
+                                <div class="content-style collapsible-content collapsible-collapsed">
                                         <div class="" id="style-container">
                                                 <div class="style-row" id="layer-style">
                                                 </div>
diff --git a/js/panels/Timeline/Layer.reel/Layer.js b/js/panels/Timeline/Layer.reel/Layer.js
index e3897bbf..e76b8cc0 100644
--- a/