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-rwxr-xr-xjs/helper-classes/3D/math-utils.js33
-rwxr-xr-xjs/helper-classes/3D/snap-manager.js32
2 files changed, 64 insertions, 1 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, {
538 } 538 }
539 }, 539 },
540 540
541 isIdentityMatrix: {
542 value: function( mat )
543 {
544 if(!mat)
545 {
546 return false;
547 }
548 else
549 {
550 if(mat[0] !== 1) return false;
551 if(mat[1] !== 0) return false;
552 if(mat[2] !== 0) return false;
553 if(mat[3] !== 0) return false;
554
555 if(mat[4] !== 0) return false;
556 if(mat[5] !== 1) return false;
557 if(mat[6] !== 0) return false;
558 if(mat[7] !== 0) return false;
559
560 if(mat[8] !== 0) return false;
561 if(mat[9] !== 0) return false;
562 if(mat[10] !== 1) return false;
563 if(mat[11] !== 0) return false;
564
565 if(mat[12] !== 0) return false;
566 if(mat[13] !== 0) return false;
567 if(mat[14] !== 0) return false;
568 if(mat[15] !== 1) return false;
569 }
570 return true;
571 }
572 },
573
541 rectsOverlap: 574 rectsOverlap:
542 { 575 {
543 value: function( pt, width, height, elt ) 576 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, {
40 40
41 // keep a reference to the most recent hitRecord. Used for drawing feedback on the stage 41 // keep a reference to the most recent hitRecord. Used for drawing feedback on the stage
42 _lastHit : { value: null, writable: true }, 42 _lastHit : { value: null, writable: true },
43 _hitRecords : { value: [], writable: true },
43 44
44 // keep a list of objects to avoid snapping to 45 // keep a list of objects to avoid snapping to
45 _avoidList : { value: [], writable: true }, 46 _avoidList : { value: [], writable: true },
@@ -274,6 +275,11 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
274 } //if (hitRecArray.length == 0) 275 } //if (hitRecArray.length == 0)
275 276
276 var rtnHit; 277 var rtnHit;
278
279 // Save reference to hit records to verify last hit record's element matches browser's elementFromPoint
280 this._hitRecords.length = 0;
281 this._hitRecords = hitRecArray;
282
277 if (hitRecArray.length > 0) 283 if (hitRecArray.length > 0)
278 { 284 {
279 this.sortHitRecords( hitRecArray ); 285 this.sortHitRecords( hitRecArray );
@@ -2246,6 +2252,30 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
2246 drawUtils.setDrawingSurfaceElement(saveContext); 2252 drawUtils.setDrawingSurfaceElement(saveContext);
2247 } 2253 }
2248 } 2254 }
2249 } 2255 },
2256
2257 findHitRecordForElement: {
2258 value: function(elt) {
2259 var rtnHit;
2260
2261 if (!this._hitRecords) return;
2262 var nHits = this._hitRecords.length;
2263
2264 for (var i=0; i<nHits; i++)
2265 {
2266 var hi = this._hitRecords[i];
2267 if(hi.getElement() === elt)
2268 {
2269 rtnHit = hi;
2270 break;
2271 }
2272 }
2273 // catch-all to turn off drag plane snapping
2274 this.deactivateDragPlane();
2275
2276 this.setLastHit( rtnHit );
2277 return rtnHit;
2278 }
2279 }
2250 2280
2251}); 2281});