From 40a4d9dbc12e802e2d0a7c3acd69bc7e394d4529 Mon Sep 17 00:00:00 2001
From: Pushkar Joshi
Date: Fri, 27 Apr 2012 10:03:58 -0700
Subject: Fix for 1525 Pen: "Uncaught RangeError: Maximum call stack size
 exceeded".

(check if the second mouse click actually selects the existing first anchor point)
---
 js/helper-classes/3D/math-utils.js | 11 ++++++-----
 js/tools/PenTool.js                | 38 ++++++++++++++++++++++++++++++--------
 2 files changed, 36 insertions(+), 13 deletions(-)

(limited to 'js')

diff --git a/js/helper-classes/3D/math-utils.js b/js/helper-classes/3D/math-utils.js
index 2f0283a9..35ee8112 100755
--- a/js/helper-classes/3D/math-utils.js
+++ b/js/helper-classes/3D/math-utils.js
@@ -928,17 +928,18 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, {
                 return 0;
             }
             //TODO testing...remove this block
-            console.log("getAxisAngleBetween3DVectors Angle: "+angle);
             if (isNaN(angle)){
-                console.log("getAxisAngleBetween3DVectors Angle is NaN");
+                console.log("Warning! getAxisAngleBetween3DVectors Angle is NaN");
             }
             //TODO end testing block
             //optionally, if axis is provided, create the axis of rotation as well
             var rotAxis = VecUtils.vecCross(3, v1n, v2n);
             rotAxis = VecUtils.vecNormalize(3, rotAxis, 1);
-            axis[0] = rotAxis[0];
-            axis[1] = rotAxis[1];
-            axis[2] = rotAxis[2];
+            if (axis){
+                axis[0] = rotAxis[0];
+                axis[1] = rotAxis[1];
+                axis[2] = rotAxis[2];
+            }
             return angle;
         }
     },
diff --git a/js/tools/PenTool.js b/js/tools/PenTool.js
index 8ecc9f79..8cc32536 100755
--- a/js/tools/PenTool.js
+++ b/js/tools/PenTool.js
@@ -273,14 +273,36 @@ exports.PenTool = Montage.create(ShapeTool, {
                 var swMousePos = hitRec.calculateStageWorldPoint();
                 swMousePos[0]+= snapManager.getStageWidth()*0.5; swMousePos[1]+= snapManager.getStageHeight()*0.5;
 
-                this._selectedSubpath.addAnchor(new AnchorPoint());
-                var newAnchor = this._selectedSubpath.getAnchor(this._selectedSubpath.getSelectedAnchorIndex());
-                newAnchor.setPos(swMousePos[0], swMousePos[1], swMousePos[2]);
-                newAnchor.setPrevPos(swMousePos[0], swMousePos[1], swMousePos[2]);
-                newAnchor.setNextPos(swMousePos[0], swMousePos[1], swMousePos[2]);
-                //set the mode so that dragging will update the next and previous locations
-                this._editMode = this.EDIT_PREV_NEXT;
-            }
+                //check if the mouse click location is close to the existing anchor
+                var indexAndCode = this._selectedSubpath.pickAnchor(swMousePos[0], swMousePos[1], swMousePos[2], this._PICK_POINT_RADIUS);
+                if (indexAndCode[0]>=0){
+                    //the anchor point was hit, so we do not add another anchor
+                    switch(indexAndCode[1]){
+                        case this._selectedSubpath.SEL_ANCHOR:
+                            this._editMode = this.EDIT_ANCHOR;
+                            break;
+                        case this._selectedSubpath.SEL_PREV:
+                            this._editMode = this.EDIT_PREV;
+                            break;
+                        case this._selectedSubpath.SEL_NEXT:
+                            this._editMode = this.EDIT_NEXT;
+                            break;
+                        default:
+                            this._editMode = this.EDIT_ANCHOR;
+                            console.log("WARNING picked anchor point with incorrect mode");
+                            break;
+                    }
+                    
+                } else {
+                    this._selectedSubpath.addAnchor(new AnchorPoint());
+                    var newAnchor = this._selectedSubpath.getAnchor(this._selectedSubpath.getSelectedAnchorIndex());
+                    newAnchor.setPos(swMousePos[0], swMousePos[1], swMousePos[2]);
+                    newAnchor.setPrevPos(swMousePos[0], swMousePos[1], swMousePos[2]);
+                    newAnchor.setNextPos(swMousePos[0], swMousePos[1], swMousePos[2]);
+                    //set the mode so that dragging will update the next and previous locations
+                    this._editMode = this.EDIT_PREV_NEXT;
+                }
+            } //if we have not yet created a canvas for this path
 
             //the selected subpath has a canvas, so test within that canvas' space
             else
-- 
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