fixes for grid drawing.

1 files changed, 8 insertions, 1 deletions

diff --git a/js/helper-classes/3D/math-utils.js b/js/helper-classes/3D/math-utils.js
index 409d2750..4da3d2c8 100755
--- a/js/helper-classes/3D/math-utils.js
+++ b/js/helper-classes/3D/math-utils.js
@@ -784,7 +784,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, {
     },
 
     boundaryContainsPoint: {
-        value: function( bounds,  targetPt,  backFacing )
+        value: function( bounds,  targetPt,  backFacing,  onParams )
         {
             var pt = targetPt.slice(0);
             while (pt.length > 2)  pt.pop();
@@ -817,7 +817,14 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, {
                     var t = VecUtils.vecMag(2, vec1)/VecUtils.vecMag(2, vec0);
                                         var dot = VecUtils.vecDot(2, vec0, vec1);
                     if ((this.fpSign(dot) >= 0) && (this.fpSign(t) >= 0) && (this.fpCmp(t,1.0) <= 0))
+                                        {
+                                                if (onParams)
+                                                {
+                                                        onParams[0] = (i+3) % 4;
+                                                        onParams[1] = t;
+                                                }
                         return this.ON;
+                                        }
                     else
                         return this.OUTSIDE;
                 }