カメラの残像をつくってあそぶ

カメラの残像をつくってあそぶ（たまたまできた）

by utabi 03 Oct 2009

• Related works: 1

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/**
 * Copyright utabi ( http://wonderfl.net/user/utabi )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/h6OY
 */

// カメラの残像をつくってあそぶ（たまたまできた）

package {
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Sprite;
	import flash.display.BlendMode;
	import flash.events.Event;
	import flash.filters.BlurFilter;
	import flash.filters.ColorMatrixFilter;
	import flash.filters.ConvolutionFilter;
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.geom.ColorTransform;
	import flash.media.Camera;
	import flash.media.Video;
	
	[SWF(frameRate="20")]
	
	public class AfterImage extends Sprite {
	    Wonderfl.capture_delay( 15 );
		private var camera:Camera;
		private var video:Video;
		private var videoWidth:int = 465;
		private var videoHeight:int = 465;
		private var bd:BitmapData;
		private var currentBD:BitmapData;
		private var oldBD:BitmapData;
		private var diffBD:BitmapData;
		private var overlay:BitmapData;
		private var rect:Rectangle;
		private var zeroPoint:Point = new Point(0,0);

		private var blurFilter:BlurFilter = new BlurFilter(3,3);
		private var grayConst:Array = [
			0.3, 0.59, 0.11, 0, 0,
			0.3, 0.59, 0.11, 0, 0,
			0.3, 0.59, 0.11, 0, 0,
			0, 0, 0, 0, 255
		];
		private var grayFilter:ColorMatrixFilter = new ColorMatrixFilter(grayConst);
		
		private var threshold:uint=0xFF222222;
			
		public function AfterImage() {
			camera = Camera.getCamera();
			if (camera==null) {
			} else {
				start();
			}
		}
		private function start():void {
			camera.setMode(videoWidth, videoHeight,20);
			video = new Video(videoWidth, videoHeight);
			video.attachCamera(camera);
			bd = new BitmapData(videoWidth,videoHeight);
			currentBD = new BitmapData(videoWidth,videoHeight);
			oldBD = new BitmapData(videoWidth,videoHeight);
			diffBD = new BitmapData(videoWidth,videoHeight);
			overlay = new BitmapData(videoWidth,videoHeight,true,0);
			rect = currentBD.rect;
			
			this.addChild(video);
			this.addChild(new Bitmap(bd));

			//this.getChildAt(1).y=233;
			this.addEventListener(Event.ENTER_FRAME,onEnterFrame);
		}
		private function onEnterFrame(e:Event):void {
			
			
			currentBD.lock();
			oldBD.lock();
			diffBD.lock();
			overlay.fillRect(rect,0);
			overlay.lock();
			
			currentBD.draw(video);
			currentBD.applyFilter(currentBD,rect,zeroPoint,grayFilter);
			
			diffBD.draw(currentBD);
			diffBD.draw(oldBD,null,null,BlendMode.DIFFERENCE);
			diffBD.applyFilter(diffBD, rect,zeroPoint,blurFilter);
			diffBD.threshold(diffBD, rect, zeroPoint, ">", 0xff222222, 0xffffffff);
			diffBD.threshold(diffBD, rect, zeroPoint, "<", 0xff111111, 0x00000000);
			
			oldBD.draw(currentBD);
			
			currentBD.unlock();
			oldBD.unlock();
			diffBD.unlock();
			overlay.unlock();
			bd.draw(diffBD);
		}
		
	}
}