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2331 =i.firstTarget)return;b.preventDefault(),j.call(b)}},!0),a.touchEvents=i}(window.PolymerGestures),function(a){var b=a.dispatcher,c=b.pointermap,d=window.MSPointerEvent&&"number"==typeof window.MSPointerEvent.MSPOINTER_TYPE_MOUSE,e={events:["MSPointerDown","MSPointerMove","MSPointerUp","MSPointerCancel"],register:function(a){b.listen(a,this.events)},unregister:function(a){a.nodeType!==Node.DOCUMENT_NODE&&b.unlisten(a,this.events)},POINTER_TYPES:["","unavailable","touch","pen","mouse"],prepareEvent:function(a){var c=a;return c=b.cloneEvent(a),d&&(c.pointerType=this.POINTER_TYPES[a.pointerType]),c._source="ms",c},cleanup:function(a){c["delete"](a)},MSPointerDown:function(d){var e=this.prepareEvent(d);e.target=a.findTarget(d),c.set(d.pointerId,e.target),b.down(e)},MSPointerMove:function(a){var d=c.get(a.pointerId);if(d){var e=this.prepareEvent(a);e.target=d,b.move(e)}},MSPointerUp:function(d){var 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function(){a.tapPrevented=!0,d["delete"](a.pointerId)}},b.registerGesture("tap",e)}(window.PolymerGestures),function(a){var b=a.dispatcher,c=a.eventFactory,d=new a.PointerMap,e=180/Math.PI,f={events:["down","up","move","cancel"],exposes:["pinchstart","pinch","pinchend","rotate"],defaultActions:{pinch:"none",rotate:"none"},reference:{},down:function(b){if(d.set(b.pointerId,b),2==d.pointers()){var c=this.calcChord(),e=this.calcAngle(c);this.reference={angle:e,diameter:c.diameter,target:a.targetFinding.LCA(c.a.target,c.b.target)},this.firePinch("pinchstart",c.diameter,c)}},up:function(a){var b=d.get(a.pointerId),c=d.pointers();if(b){if(2===c){var e=this.calcChord();this.firePinch("pinchend",e.diameter,e)}d["delete"](a.pointerId)}},move:function(a){d.has(a.pointerId)&&(d.set(a.pointerId,a),d.pointers()>1&&this.calcPinchRotate())},cancel:function(a){this.up(a)},firePinch:function(a,b,d){var e=b/this.reference.diameter,f=c.makeGestureEvent(a,{bubbles:!0,cancelable:!0,scale:e,centerX:d.center.x,centerY:d.center.y,_source:"pinch"});this.reference.target.dispatchEvent(f)},fireRotate:function(a,b){var d=Math.round((a-this.reference.angle)%360),e=c.makeGestureEvent("rotate",{bubbles:!0,cancelable:!0,angle:d,centerX:b.center.x,centerY:b.center.y,_source:"pinch"});this.reference.target.dispatchEvent(e)},calcPinchRotate:function(){var a=this.calcChord(),b=a.diameter,c=this.calcAngle(a);b!=this.reference.diameter&&this.firePinch("pinch",b,a),c!=this.reference.angle&&this.fireRotate(c,a)},calcChord:function(){var a=[];d.forEach(function(b){a.push(b)});for(var b,c,e,f=0,g={a:a[0],b:a[1]},h=0;h<a.length;h++)for(var i=a[h],j=h+1;j<a.length;j++){var k=a[j];b=Math.abs(i.clientX-k.clientX),c=Math.abs(i.clientY-k.clientY),e=b+c,e>f&&(f=e,g={a:i,b:k})}return 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