re-compute and store the center of the subpath in local coordinates upon file open

2 files changed, 10 insertions, 1 deletions

diff --git a/js/lib/geom/sub-path.js b/js/lib/geom/sub-path.js
index 43420bc9..56c94df3 100755
--- a/js/lib/geom/sub-path.js
+++ b/js/lib/geom/sub-path.js
@@ -1106,6 +1106,14 @@ GLSubpath.prototype.importJSON = function(jo) {
     this._fillColor = jo.fillColor;
 
     this._dirty = true;
+    this.createSamples(false);
+    this.offsetPerBBoxMin();
+
+    //compute and store the center of the bbox in local space
+    var bboxMin = this.getBBoxMin();
+    var bboxMax = this.getBBoxMax();
+    var bboxMid = [0.5*(bboxMin[0]+bboxMax[0]),0.5*(bboxMin[1]+bboxMax[1]),0.5*(bboxMin[2]+bboxMax[2])];
+    this.setCanvasCenterLocalCoord(bboxMid);
 };
 
 GLSubpath.prototype.import = function( importStr ) {
diff --git a/js/tools/PenTool.js b/js/tools/PenTool.js
index 4ff77371..8ecc9f79 100755
--- a/js/tools/PenTool.js
+++ b/js/tools/PenTool.js
@@ -786,7 +786,8 @@ exports.PenTool = Montage.create(ShapeTool, {
                 glmat4.multiply( newMat, tMat, newMat);
                 this._selectedSubpathPlaneMat = newMat;
                 ViewUtils.setMatrixForElement(this._selectedSubpathCanvas, newMat, true);
-
+                
+                //now set the center of the canvas as the center of the bounding box expressed in stage world coordinates
                 var localToStageWorldMat = ViewUtils.getLocalToStageWorldMatrix(this._selectedSubpathCanvas, false, false);
                 this._selectedSubpathCanvasCenter = MathUtils.transformAndDivideHomogeneousPoint(bboxMid, localToStageWorldMat);
                 this._selectedSubpathCanvasCenter[0]+= xAdjustment;