About Air multi-touch Development

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About flash multi-touch development <Basic> about flash multi-touch development-traffic <Case Study>

 

This topic aims to develop a map case that supports multi-touch. As progress notes only

 

 

 

 

 

import flash.events.TransformGestureEvent; import flash.events.TouchEvent;import flash.text.TextField;  var pointA_id:Number=0;var pointB_id:Number=0; addEventListener(TouchEvent.TOUCH_BEGIN, onTouchBegin);addEventListener(TouchEvent.TOUCH_END, onTouchEnd);addEventListener(TouchEvent.TOUCH_MOVE, onTouchMove); addEventListener(TransformGestureEvent.GESTURE_ROTATE,onRotate)addEventListener(TransformGestureEvent.GESTURE_ZOOM,onZoom)addEventListener(TransformGestureEvent.GESTURE_PAN,onPan)addEventListener(TransformGestureEvent.GESTURE_SWIPE,onSwipe)  function onRotate(e:TransformGestureEvent):void{ _txt.text="rotate:"+e.rotation container.rotation+=e.rotation  } function onZoom(e:TransformGestureEvent):void{ _txt.text="scaleX:"+e.scaleX+"\n"+"scaleY:"+e.scaleY; if(e.scaleX==0 && e.scaleY==0)return;   var scale:Number=(e.scaleX>=e.scaleY) ? e.scaleX : e.scaleY; scale=fixNumber(scale)   var minS:Number=0.2; var maxS:Number=1;   var tempScale=fixNumber(container.photo_mc.scaleX)*scale; tempScale=fixNumber(tempScale)   if(tempScale<minS) tempScale=minS; if(tempScale>maxS) tempScale=maxS;   container.photo_mc.scaleX=container.photo_mc.scaleY=tempScale;  } function onPan(e:TransformGestureEvent):void{ _txt.text="offsetX:"+e.offsetX+"\n"+"offsetY:"+e.offsetY; container.x+=e.offsetX; container.y+=e.offsetY;} function onSwipe(e:TransformGestureEvent):void{ //trace("SWIPE")} function onTouchBegin(e:TouchEvent):void{   if(pointA_id==0){  pointA_id=e.touchPointID  updatePointInfo(e.touchPointID,e.stageX,e.stageY,a_txt) }else{  pointB_id=e.touchPointID  updatePointInfo(e.touchPointID,e.stageX,e.stageY,b_txt) }} function onTouchMove(e:TouchEvent):void{ if(pointA_id==e.touchPointID){  updatePointInfo(e.touchPointID,e.stageX,e.stageY,a_txt) }else{  updatePointInfo(e.touchPointID,e.stageX,e.stageY,b_txt) }  }function onTouchEnd(e:TouchEvent):void{ if(pointA_id==e.touchPointID){  pointA_id=0;  clearPointInfo(a_txt) }else{  pointB_id=0  clearPointInfo(b_txt) }  } function updatePointInfo(id:Number,x:Number,y:Number,_txt:TextField):void{ var str:String=""; str="PointID: "+id+"\n"; str+="X: "+x+"\n"; str+="Y: "+y; _txt.text=str;} function clearPointInfo(_txt:TextField):void{ _txt.text="PointID: --\n"+"X: --\n"+"Y: --";}function fixNumber(n:Number):Number{ return int(n*100)/100;}