flash摄像头的使用

//摄像头的使用 具体代码

import flash.display.Bitmap;import flash.display.BitmapData;import flash.geom.Rectangle;import flash.geom.Point;var my_Camera:Camera;var my_Video:Video;var my_BitmapDataBefore:BitmapData;var my_BitmapDataCurrent:BitmapData;var bitmapData:BitmapData;var rectOne:Rectangle;var rectTwo:Rectangle;var time:Timer=new Timer(100,0);  time.addEventListener(TimerEvent.TIMER,comparisonOnTime); //矩形框 rectOne = new Rectangle(MovieClip(this.parent).jx1.x,MovieClip(this.parent).jx1.y,MovieClip(this.parent).jx1.width,MovieClip(this.parent).jx1.height);rectTwo = new Rectangle(MovieClip(this.parent).jx2.x,MovieClip(this.parent).jx2.y,MovieClip(this.parent).jx2.width,MovieClip(this.parent).jx2.height);var rectOne1:Rectangle = new Rectangle(rectOne.x,rectOne.y,rectOne.width/2,rectOne.height/2);var rectOne2:Rectangle = new Rectangle(rectOne.x+rectOne.width/2,rectOne.y,rectOne.width/2,rectOne.height/2);var rectOne3:Rectangle = new Rectangle(rectOne.x,rectOne.y+rectOne.height/2,rectOne.width/2,rectOne.height/2);var rectOne4:Rectangle = new Rectangle(rectOne.x+rectOne.width/2,rectOne.y+rectOne.height/2,rectOne.width/2,rectOne.height/2);var rectTwo1:Rectangle = new Rectangle(rectTwo.x,rectTwo.y,rectTwo.width/2,rectTwo.height/2);var rectTwo2:Rectangle = new Rectangle(rectTwo.x+rectTwo.width/2,rectTwo.y,rectTwo.width/2,rectTwo.height/2);var rectTwo3:Rectangle = new Rectangle(rectTwo.x,rectTwo.y+rectTwo.height/2,rectTwo.width/2,rectTwo.height/2);var rectTwo4:Rectangle = new Rectangle(rectTwo.x+rectTwo.width/2,rectTwo.y+rectTwo.height/2,rectTwo.width/2,rectTwo.height/2);//初始化摄像头my_Camera= Camera.getCamera();if (my_Camera != null) {  my_Camera.addEventListener(StatusEvent.STATUS,loadCamera);  my_Video = new Video(400,300);  my_Video.clear();  my_Video.attachCamera(my_Camera);   my_BitmapDataBefore = new BitmapData(my_Camera.width,my_Camera.height,true,0);  my_BitmapDataBefore.draw(my_Video)} else {  trace("错误：找不到可用的摄像头");}//显示摄像头中的内容function loadCamera(e:StatusEvent):void {  my_Video.x = 0;  my_Video.y = 0;  my_Camera.setMode(my_Video.width,my_Video.height,24);  addChild(my_Video);  time.start();}function comparisonOnTime(e:TimerEvent){    doClearance();    my_BitmapDataCurrent = getCurrentBitmapData();    //显示比较图片 (直接使用比较，效率比先赋值再使用要高一倍)    if(!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectOne1)||!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectOne2)||!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectOne3)||!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectOne4)){//不像似则表示发生了移动        MovieClip(MovieClip(this.parent).parent).block_1.visible=true ;        }else{MovieClip(MovieClip(this.parent).parent).block_1.visible= false;}    if(!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectTwo1)||!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectTwo2)||!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectTwo3)||!isAlickForTowBitmapData(my_BitmapDataBefore,my_BitmapDataCurrent,rectTwo4)){       MovieClip(MovieClip(this.parent).parent).block_2.visible=true ;        }else{MovieClip(MovieClip(this.parent).parent).block_2.visible= false;}      my_BitmapDataBefore = my_BitmapDataCurrent.clone(); }//捕获当前照片function getCurrentBitmapData():BitmapData {    if(!bitmapData){ bitmapData = new BitmapData(my_Camera.width,my_Camera.height,true,0);}     bitmapData.draw(my_Video);        if(bitmapData){return bitmapData;}      return my_BitmapDataBefore;}//比较两幅图指定位置是否相似function isAlickForTowBitmapData(firstImage:BitmapData, lastImage:BitmapData,rect:Rectangle):Boolean{    var rect:Rectangle = rect;    var pt:Point = new Point(0, 0);    var bdFirst:BitmapData = new BitmapData(rect.width,rect.height);    bdFirst.copyPixels(firstImage, rect, pt);    var bdLast:BitmapData = new BitmapData(rect.width,rect.height);    bdLast.copyPixels(lastImage, rect, pt);    if(bdFirst.compare(bdLast)){       var diffBmpData:BitmapData = bdFirst.compare(bdLast) as BitmapData;       var alikeCount:int = 0;      var allCount:int = 0;      var w:uint = diffBmpData.rect.width;      var h:uint = diffBmpData.rect.height;      for(var i:int=0;i<w-1;i=i+2){          for(var j:int=0;j<h-1;j=j+2){          if(diffBmpData.getPixel(i,j).toString(16)=="0"){alikeCount++;}            allCount++;          }        }         diffBmpData.dispose();      }//  释放内存 bdFirst.dispose(); bdLast.dispose();//trace("相似度数"+allCount);  if(alikeCount/allCount>MovieClip(this.parent).slider.getSliderValue()){return true;} else{return false;}} function doClearance() : void {      try{          new LocalConnection().connect("foo");          new LocalConnection().connect("foo");     }catch(error : Error){}                         }