Rainbow

forked:6
favorite:67
lines:147
license : MIT License
modified : 2009-01-11 05:05:30

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// write as3 code here..
package {
	
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.BlendMode;
	import flash.display.Graphics;
	import flash.display.Loader;
	import flash.display.LoaderInfo;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.filters.ColorMatrixFilter;
	import flash.geom.Matrix;
	import flash.geom.Point;
	import flash.net.URLRequest;
	import flash.system.LoaderContext;
	import flash.utils.getTimer;
	
	import frocessing.color.ColorHSV;
	import frocessing.color.ColorRGB;
	
	[SWF(width=465, height=465, backgroundColor=0x0, frameRate=60)]
	
	public class Rainbow extends Sprite {
		
		private static const ZERO_POINT:Point = new Point(0, 0);
		
		private static const NUM_OBJECTS:int = 16;
		private static const FORCE:Number = 500.0;
		private static const COLOR_SPEED:Number = 0.05;
		
		private var _center:Sprite;
		private var _images:Array;
		private var _tmp:BitmapData;
		
		private var _mousePressed:Boolean = false;
		private var _prevTime:int = 0;
		private var _colorOffset:Number = 0;
		private var _mousePt:Point = new Point();
		
		public function Rainbow() {
			var loader:Loader = new Loader();
			loader.contentLoaderInfo.addEventListener(Event.COMPLETE, this._onImageLoaded);
			loader.load(new URLRequest('http://saqoosha.net/images/booo.jpg'), new LoaderContext(true));
		}
		
		private function _onImageLoaded(e:Event):void {
			var loader:Loader = LoaderInfo(e.target).loader;
			var original:BitmapData = Bitmap(loader.content).bitmapData;
			
			this._center = this.addChild(new Sprite()) as Sprite;
			this._center.x = this.stage.stageWidth / 2;
			this._center.y = this.stage.stageHeight / 2;

var rs:Number = 0, gs:Number = 0, bs:Number = 0;
			var i:int;
			var c:ColorRGB;
			for (i = 0; i < NUM_OBJECTS; i++) {
				c = new ColorHSV(i / NUM_OBJECTS * 360, 1, 1).toRGB();
				rs += c.r;
				gs += c.g;
				bs += c.b;
			}
			
			this._images = [];
			for (i = 0; i < NUM_OBJECTS; i++) {
				var a:Number = Math.PI * 2 * i / NUM_OBJECTS;
				c = new ColorHSV(i / NUM_OBJECTS * 360, 1, 1).toRGB();
				var img:ColoredImage = this._center.addChild(new ColoredImage(original, c.r / rs, c.g / gs, c.b / bs)) as ColoredImage;
				var px:Number = Math.cos(a) * 30;
				var py:Number = Math.sin(a) * 30;  
				img.init(px, py);
				this._images.push(img);
			}
			
			this.addEventListener(Event.ENTER_FRAME, this._update);
			this.stage.addEventListener(MouseEvent.MOUSE_DOWN, this._onMouseDown);
			this.stage.addEventListener(MouseEvent.MOUSE_UP, this._onMouseUp);
		}
		
		private function _onMouseDown(e:MouseEvent):void {
			this._mousePressed = true;
		}
		
		private function _onMouseUp(e:MouseEvent):void {
			this._mousePressed = false;
		}
		
		private function _update(e:Event):void {
			this._mousePt.x = this._center.mouseX;
			this._mousePt.y = this._center.mouseY
			var img:ColoredImage;
			for each (img in this._images) {
				var dist:Number = Math.max(Point.distance(this._mousePt, img.initPos), 3);
				var lc:Point = img.initPos.subtract(this._mousePt);
				var a:Number = Math.atan2(lc.y, lc.x);
				var f:Number = 1 / dist * FORCE * (this._mousePressed ? 3 : 1);
				img.addForce(Math.cos(a) * f, Math.sin(a) * f);
				img.update();
			}
		}
	}
}

import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.BlendMode;
import flash.display.Graphics;
import flash.display.Sprite;
import flash.filters.ColorMatrixFilter;
import flash.geom.Point;

import frocessing.color.ColorRGB;

class ColoredImage extends Sprite {
	
	public static var ACC_PARAM:Number = 0.2;
	public static var VELOCITY_PARAM:Number = 0.8;
	
	private var _ix:Number;
	private var _iy:Number;
	private var _vx:Number = 0;
	private var _vy:Number = 0;
	private var _ax:Number = 0;
	private var _ay:Number = 0;
	
	private var _img:Bitmap;
	
	public function ColoredImage(image:BitmapData, r:Number, g:Number, b:Number) {
		this._img = this.addChild(new Bitmap(image)) as Bitmap;
		this._img.x = -this._img.width / 2;
		this._img.y = -this._img.height / 2;
		this._img.filters = [
			new ColorMatrixFilter([
				r, 0, 0, 0, 0,
				0, g, 0, 0, 0,
				0, 0, b, 0, 0,
				0, 0, 0, 1, 0
			])
		];
		this._img.blendMode = BlendMode.ADD;
	}
	
	public function init(ix:Number, iy:Number):void {
		this.x = this._ix = ix;
		this.y = this._iy = iy;
		this._img.x -= ix;
		this._img.y -= iy;
	}
	
	public function addForce(ax:Number, ay:Number):void {
		this._ax += ax;
		this._ay += ay;
	}
	
	public function update():void {
		this._ax += (this._ix - this.x) * ACC_PARAM;
		this._ay += (this._iy - this.y) * ACC_PARAM;
		this._vx = (this._vx + this._ax) * VELOCITY_PARAM;
		this._vy = (this._vy + this._ay) * VELOCITY_PARAM;
		this.x += this._vx;
		this.y += this._vy;
		this._ax = this._ay = 0;
	}
	
	public function get ix():Number {
		return this._ix;
	}
	
	public function get iy():Number {
		return this._iy;
	}
	
	public function get initPos():Point {
		return new Point(this._ix, this._iy);
	}
}

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