flash on 2009-12-30

by _ryotaros 30 Dec 2009

Embed

/**
 * Copyright _ryotaros ( http://wonderfl.net/user/_ryotaros )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/kZx3
 */

package {
	import flash.display.BitmapData;
	import flash.display.BitmapDataChannel;
	import flash.display.Bitmap;
	import flash.geom.ColorTransform;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import frocessing.core.F5BitmapData2D;
    
    [SWF(width =465, height =465, backgroundcolor =0,frameRate=60)]
    public class FlashTest extends Sprite {
    	
    		private var fb:F5BitmapData2D;
    		private var colorTrans:ColorTransform;
    		private var vectormap:BitmapData;
    		private var particles:Array;
    		private var particle_number:uint = 50;
    		private var size:Number = 465;
    	
        public function FlashTest() {
            //F5BitmapDataを作成して表示リストに追加
            fb = new F5BitmapData2D( size, size, false, 0 );
            fb.colorMode( "hsv", 1.0 );
            addChild( new Bitmap( fb.bitmapData ) );
            //エフェクト初期化
            colorTrans = new ColorTransform( 0.82, 0.82, 0.82 );
            //ベクトルマップとパーティクルの初期化
            vectormap = new BitmapData( size, size, false, 0 );
            reset();
            //イベント
            addEventListener( Event.ENTER_FRAME, enterframe );
            stage.addEventListener( MouseEvent.CLICK, reset );
        }
        
        private function reset( e:MouseEvent = null ):void {
            //ベクトルマップの初期化
            var randomSeed:int = Math.random()*0xFFFFFFFF;
            var colors:uint    = BitmapDataChannel.RED | BitmapDataChannel.GREEN;
            vectormap.perlinNoise( size/2, size/2, 2, randomSeed, false, true, colors );
            //パーティクルの初期化
            var c:uint;
            particles = new Array(particle_number);
            for (var i:int = 0; i < particle_number; i++) {
				//色を赤もしくは白
                if ( Math.random() > 0.05 )
                    c = fb.color( 0.95, 0.6+Math.random()*0.8, 0.5+Math.random()*0.5 );
                else
                    c = 0xffffff;
                particles[i] = new Particle( Math.random()*size, Math.random()*size, c );
            }
            //エフェクト
            fb.bitmapData.colorTransform( fb.bitmapData.rect, colorTrans );
        }
        
        private function enterframe (e:Event):void {
        		
        		fb.beginDraw();
        		for (var i:int = 0;i < particle_number; i++){
        			var p:Particle = particles[i];
        			var x0:Number = p.x;
        			var y0:Number = p.y;
        			var vx0:Number = p.vx;
        			var vy0:Number = p.vy;
        			
        			var _x3:Number = p.xx3;
        			var _y3:Number = p.yy3;
        			
        			p.ax *= 0.58;
        			p.ay *= 0.58;
        			
        			p.vx *= 0.84;
        			p.vy *= 0.84;
        			
        			var col:uint = vectormap.getPixel( p.x, p.y );
        			p.ax += (( col >> 16 & 0xff ) - 128 )*0.02;
        			p.ay += (( col >> 8 & 0xff ) - 128 )*0.02;
        			
        			var x1:Number = p.x += p.vx += p.ax;
        			var y1:Number = p.y += p.vy += p.ay;
        			
        			if ( p.x > size ) { p.x -= size; }
        			else if ( p.x < 0 ) { p.x += size }
        			if ( p.y > size ) { p.y -= size }
        			else if ( p.y < 0 ){ p.y += size }
        			
        			var x2:Number = x1 + p.vy / 3;
        			var y2:Number = y1 - p.vx / 3;
        			var x3:Number = x0 + vy0 / 3;
        			var y3:Number = y0 - vx0 / 3;
        			
        			p.xx3 = x2;
        			p.yy3 = y2;
        			
        			fb.noStroke();
        			fb.fill( p.color );
        			fb.quad( x0, y0, x1, y1, x2, y2, x3, y3 );
        			fb.stroke( 0, 0.1 );
        			fb.line( x0, y0, x1, y1 );
        			fb.line( x2, y2 ,x3, y3);
        		}
        		fb.endDraw();
        }
    }
}

class Particle {
	
	public var x:Number;
	public var y:Number;
	
	public var xx3:Number = 0;
	public var yy3:Number = 0;
	
	public var ax:Number = 0;
	public var ay:Number = 0;
	
	public var vx:Number = 0;
	public var vy:Number = 0;
	
	public var color:uint;
	function Particle ( px:Number, py:Number, col:uint) {
		x = px;
		y = py;
		color = col;
	}
}