forked from: 動体検知

まだまだ途中バージョン
作っている自分も良くわかってません。

by fumix 02 Jul 2009

• Forked from ll_koba_ll's 動体検知
• Diff: 120
• Related works: 11

Tags

camera 動体検知
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// forked from ll_koba_ll's 動体検知
// write as3 code here..
//まだまだ途中バージョン
//作っている自分も良くわかってません。
package
{
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.BlendMode;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.ColorTransform;
	import flash.geom.Matrix;
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.media.Camera;
	import flash.media.Video;
	import flash.text.TextField;

	[SWF(width = "465", height = "465", frameRate = "30",backgroundColor="0x000000")]
	public class blend extends Sprite
	{
		private var camera:Camera;
		private var video:Video;
		private var now:BitmapData;
		private var before:BitmapData;
		private var bmd:BitmapData;
		private var rect:Rectangle;
		private var pt:Point;
		
		
		private var size:int = 465;
		
		public function blend()
		{
			super();
			if (stage) init();
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}
		/**
		 * 初期処理 
		 * @param e
		 * 
		 */
		private function init(e:Event = null):void 
		{
            removeEventListener(Event.ADDED_TO_STAGE, init);
            camera = Camera.getCamera();
            //カメラあり
            if(camera != null){
            	setUpCamera();
            //カメラ無し
            }else{
            	var txt:TextField = new TextField();
            	txt.text ='カメラ無し';
            	addChild(txt);
            }
            
            bmd = new BitmapData(size,size/camera.width * camera.height,false,0x000000);
            addChild(new Bitmap(bmd));
            
            addEventListener(Event.ENTER_FRAME,loop);
            /*
            var btn:Sprite = new Sprite();
            btn.graphics.beginFill(0xFFFFFF);
            btn.graphics.drawRect(0,0,50,30);
            btn.graphics.endFill();
            btn.buttonMode = true;
            btn.addEventListener(MouseEvent.CLICK,loop);
            addChild(btn);
            */

            now = new BitmapData(size,size/camera.width * camera.height,false,0x000000);
            before = new BitmapData(size,size/camera.width * camera.height,false,0x000000);
            rect = new Rectangle(0, 0, size,size/camera.width * camera.height);
            pt = new Point(0, 0);
		}
		/**
		 *カメラのセットアップ 
		 * 
		 */
		private function setUpCamera():void
		{
			video = new Video(size,size/camera.width * camera.height);
			video.attachCamera(camera);
			addChild(video);
		}
		private function loop(e:Event=null):void
		{
			now.draw(video);
			now.draw(before,new Matrix(), new ColorTransform(),BlendMode.DIFFERENCE);
			var ret:uint = now.threshold(now,rect,pt,">",0xff111111,0xffffffff);
			before.draw(video);
			//bmd.draw(now);
			
			//動体検知処理
			//参照：http://void.heteml.jp/blog/archives/2007/10/as3_labeling.html
			var dst:BitmapData = now.clone();
			var lno:int = 0;
			var zero:Point = new Point();
			
			var rect:Rectangle = dst.getColorBoundsRect(0xffffff,0xffffff,true);
			var drawMap:Sprite = new Sprite();
			while( !rect.isEmpty()){
				for(var x:int = rect.left; x<rect.right;x++){
					if(dst.getPixel(x,rect.top) == 0xffffff){
						dst.floodFill(x,rect.top,0xff00ff);
						lno++;
						rect = dst.getColorBoundsRect(0xffffff,0xffffff,true);
						drawMap.graphics.lineStyle(1,0xff0000);
						drawMap.graphics.drawRect(rect.x,rect.y,rect.width,rect.height);
					}
				}
			}
			//trace(lno);
			bmd.draw(video);
			bmd.draw(drawMap);
			
			
		}
	}
}