/** * Clifford Attractor. * * x' = sin(a * y) + c * cos(a * x) * y' = sin(b * x) + d * cos(b * y) * * @author alumican.net */ package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.BlendMode; import flash.filters.BlurFilter; import flash.events.Event; import flash.events.MouseEvent; import flash.display.Sprite; import flash.geom.ColorTransform; import flash.geom.Rectangle; import flash.geom.Point; import org.libspark.betweenas3.easing.*; import com.flashdynamix.utils.SWFProfiler; public class CliffordAttractorDynamic extends Sprite { //---------------------------------------- //CLASS CONSTANTS //パーティクル数 private const N:uint = 15000; private const W:uint = 465; private const H:uint = 465; private const W1_2:uint = uint(W / 2); private const H1_2:uint = uint(H / 2); private const RECT:Rectangle = new Rectangle(0, 0, W, H); private const ZEROS:Point = new Point(0, 0); //---------------------------------------- //VARIABLES private var _a:Number; private var _b:Number; private var _c:Number; private var _d:Number; private var _va:Number; private var _vb:Number; private var _vc:Number; private var _vd:Number; private var _head:Particle; private var _canvas:BitmapData; private var _buffer:BitmapData; private var _blurFilter:BlurFilter; private var _colorTransForm:ColorTransform; private var _gradation:Gradation; //-------------------------------------------------- //METHODS public function CliffordAttractorDynamic():void { Wonderfl.disable_capture(); addChild(new Bitmap(_canvas = new BitmapData(W, H, false, 0x000000))); _buffer = _canvas.clone(); _gradation = new Gradation(0xcc0000, 0xcc6000, 0xcccc00, 0x00cc00, 0x00cccc, 0x0000cc, 0x6000cc); _gradation.setEasing(Linear.easeNone); _blurFilter = new BlurFilter(16, 16, 1); _colorTransForm = new ColorTransform(0.95, 0.95, 0.95); var o:Particle = _head = new Particle(); for (var i:uint = 0; i < N; ++i) { o = o.next = new Particle(); } addEventListener(Event.ENTER_FRAME, _update); stage.addEventListener(MouseEvent.CLICK, _reset); SWFProfiler.init(this); _reset(); } private function _reset(e:MouseEvent = null):void { _a = (Math.random() - 0.5) * 3; _b = (Math.random() - 0.5) * 3; _c = (Math.random() - 0.5) * 6; _d = (Math.random() - 0.5) * 6; if (Math.abs(_a) < 0.4) _a += 0.8 * _a / Math.abs(_a); if (Math.abs(_b) < 0.4) _b += 0.8 * _b / Math.abs(_b); if (Math.abs(_c) < 1.0) _c += 1.0 * _c / Math.abs(_c); if (Math.abs(_d) < 1.0) _d += 1.0 * _d / Math.abs(_d); _va = 0.010; _vb = 0.008; _vc = 0.006; _vd = 0.004; var p:Particle = _head; do { p.x1 = p.x0 = (Math.random() - 0.5) * 2; p.y1 = p.y0 = (Math.random() - 0.5) * 2; } while (p = p.next); } private function _update(e:Event):void { var p:Particle = _head, vx:Number, vy:Number; _buffer.lock(); _buffer.fillRect(RECT, 0x000000); do { p.x1 = Math.sin(_a * p.y0) + _c * Math.cos(_a * p.x0) + Math.random() * 0.001; p.y1 = Math.sin(_b * p.x0) + _d * Math.cos(_b * p.y0) + Math.random() * 0.001; vx = p.x1 - p.x0; vy = p.y1 - p.y0; p.x0 = p.x1; p.y0 = p.y1; _buffer.setPixel(W1_2 + p.x1 * 70, H1_2 + p.y1 * 70, _gradation.getColor((vx * vx + vy * vy) * 0.1) ); } while (p = p.next); _buffer.unlock(); _canvas.lock(); _canvas.colorTransform(RECT, _colorTransForm); _canvas.applyFilter(_canvas, RECT, ZEROS, _blurFilter); _canvas.draw(_buffer, null, null, BlendMode.ADD); _canvas.unlock(); if (_a < -3.0 || _a > 3.0) _va *= -1; if (_b < -3.0 || _b > 3.0) _vb *= -1; if (_c < -3.0 || _c > 3.0) _vc *= -1; if (_d < -3.0 || _d > 3.0) _vd *= -1; _a += _va; _b += _vb; _c += _vc; _d += _vd; } } } //-------------------------------------------------- //1ファイル内にクラスを3つ以上作成するとCS4でビルドできなくなるバグ対策クラス internal class EmptyClass { } //-------------------------------------------------- //パーティクル internal class Particle extends EmptyClass { public var x1:Number; public var y1:Number; public var x0:Number; public var y0:Number; public var next:Particle; } //-------------------------------------------------- /** * @author saqoosha * @see http://wonderfl.net/code/7ed2d650b9d513edf9a499fb704c19ecb7aa4694 */ import frocessing.color.ColorLerp; import org.libspark.betweenas3.core.easing.IEasing; import org.libspark.betweenas3.easing.Linear; class Gradation extends EmptyClass { private var _colors:Array; private var _easing:IEasing; public function Gradation(...args):void { _colors = args.concat(); _easing = Linear.linear; } public function setEasing(easing:IEasing):void { _easing = easing; } public function getColor(position:Number):uint { position = (position < 0 ? 0 : position > 1 ? 1 : position) * (_colors.length - 1); var idx:int = position; var alpha:Number = _easing.calculate(position - idx, 0, 1, 1); if (alpha == 0) { return _colors[idx]; } else { return ColorLerp.lerp(_colors[idx], _colors[idx + 1], alpha); } } }