PerlinNoiseテスト3 on 2010-2-3

by komatsu 02 Feb 2010

Tags

gas noise perlin smoke
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/**
 * Copyright komatsu ( http://wonderfl.net/user/komatsu )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/uj6M
 */

package {
	import flash.filters.BevelFilter;
	import flash.filters.BlurFilter;
	import flash.filters.DisplacementMapFilter;
	import flash.filters.BitmapFilterType;
    import flash.display.*;
    import flash.geom.*;
    import flash.utils.Timer;
    import flash.events.TimerEvent;
    	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.BitmapDataChannel;
    import flash.filters.BitmapFilterQuality;
    
    [SWF(backgroundColor="#000000", frameRate=30)]
    
    public class DispMapTest extends Sprite {
    		private const STW:uint = stage.stageWidth;
    		private const STH:uint = stage.stageHeight;
    		private var sp:Sprite;
    		private var map:BitmapData;
    		private var bm:Bitmap;
    		private var offset:Array = new Array();
    		private var noiseSeed:Number = 0;
    		private var channels:uint = BitmapDataChannel.RED | BitmapDataChannel.BLUE | BitmapDataChannel.GREEN;
		private var blur:BlurFilter;
		private var point1:Point = new Point(0, 0);
		private var point2:Point = new Point(0, 0);
		private var perlinOffset:Array = [point1, point2];
		
        public function DispMapTest() {
             map= new BitmapData(STW, STH, true, 0x00000000);
			bm = new Bitmap(map);
			addChild(bm);
			
			//四角
			sp = new Sprite();
			sp.graphics.beginFill(0x0066FF, 1);
			sp.graphics.drawCircle(STW/2,STH/2,STW/2);
			bm.mask = sp;
            
            var pnt:Point = new Point(0,0);

            
			var ch:uint = BitmapDataChannel.RED;
			var dispFilter:DisplacementMapFilter = new DisplacementMapFilter(map,pnt,ch,ch);
			dispFilter.scaleX =30;
			dispFilter.scaleY =30;
			
			blur = new BlurFilter();
			blur.blurX = 1;
			blur.blurY = 20;
			blur.quality = BitmapFilterQuality.MEDIUM;
			
			var bevelFilter:BevelFilter = getBitmapFilter();

			var filterTimer:Timer = new Timer(40);
			filterTimer.addEventListener(TimerEvent.TIMER , filterTimerFunc);
			function filterTimerFunc(evtObj:TimerEvent):void{
				perlinOffset[0].x -= 10;
				perlinOffset[1].x += 10;
				perlinOffset[0].y += 20;
				perlinOffset[1].y += 10;
				map.perlinNoise(100,100, 3, 1, true, true, channels,true, perlinOffset);
				bm.filters = new Array(dispFilter,blur,bevelFilter,blur);
			}
			filterTimer.start();
        }
        
        private function getBitmapFilter():BevelFilter {
            var distance:Number       = 100;
            var angleInDegrees:Number = 45;
            var highlightColor:Number = 0xFFFFFF;
            var highlightAlpha:Number = 0.8;
            var shadowColor:Number    = 0x000000;
            var shadowAlpha:Number    = 0.8;
            var blurX:Number          = 100;
            var blurY:Number          = 100;
            var strength:Number       = 1;
            var quality:Number        = BitmapFilterQuality.HIGH;
            var type:String           = BitmapFilterType.INNER;
            var knockout:Boolean      = false;

            return new BevelFilter(distance,
                                   angleInDegrees,
                                   highlightColor,
                                   highlightAlpha,
                                   shadowColor,
                                   shadowAlpha,
                                   blurX,
                                   blurY,
                                   strength,
                                   quality,
                                   type,
                                   knockout);
        }
    }
}