// forked from bkzen's test /** * 朝ワンのネタがないからちょっとずつ高速化を目指す。 * まず、bitmapData を lock した。 */ // write as3 code here.. package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Sprite; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.BlurFilter; import flash.geom.Matrix; import flash.geom.Point; import flash.geom.Rectangle; import flash.text.TextField; import net.hires.debug.Stats [SWF(width="465", height="465", backgroundColor="0x000000", frameRate="30")] public class Test extends Sprite { public static var color: uint = 0xFFFFFF; private const num: int = 500; private const rect: Rectangle = new Rectangle(0, 0, 465, 465); private const bf: BlurFilter = new BlurFilter(1.5, 1.5); private const bfPoint: Point = new Point(); private var particles: Array = []; private var bmp: Bitmap; private var sp: Sprite; public function Test() { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e: Event = null): void { removeEventListener(Event.ADDED_TO_STAGE, init); // bmp = new Bitmap(new BitmapData(rect.width, rect.height, false, 0x00000000)); addChild(bmp); sp = new Sprite(); var tf: TextField = new TextField(); tf.textColor = color; tf.text = "click start!"; tf.width = 55; tf.height = 20; bmp.bitmapData.draw(tf, new Matrix(1, 0, 0, 1, (rect.width / 2) - (tf.width / 2), (rect.height / 2) - (tf.width / 2))); for (var i: int = 0; i < num; i++) { var r: Number = Math.PI * i / num; particles.push(new Particle(r, 232.5, bmp.bitmapData, sp)); } stage.addEventListener(MouseEvent.CLICK, click); addChild(new Stats()); } private function draw(e: Event): void { bmp.bitmapData.lock(); for (var i: int = 0; i < num; i++) { var p: Particle = particles[i]; p.move(); } bmp.bitmapData.applyFilter(bmp.bitmapData, rect, new Point(), bf); bmp.bitmapData.unlock(); color = (Math.random() * 10000 > 9950) ? randomColor() : color; } private function click(e: MouseEvent): void { stage.removeEventListener(MouseEvent.CLICK, click); addEventListener(Event.ENTER_FRAME, draw); stage.addEventListener(MouseEvent.CLICK, changeColor); } private function changeColor(e: MouseEvent): void { color = randomColor(); } private function randomColor(): uint { var r: int = Math.random() * 128 + 128; var g: int = Math.random() * 128 + 128; var b: int = Math.random() * 128 + 128; return (r << 16) | (g << 8) | b; } } } import flash.display.Graphics; import flash.geom.Point; import flash.display.BitmapData; import flash.display.Sprite; class Particle { private var o: Point; // ox, oy private var p: Point; // x, y private var b: Point; // xx, yy private var v: Point; // private var age: int = (Math.random() * 200); private var color: uint; private var canvas: BitmapData; private var sp: Sprite; public function Particle(r: Number, o: int, canvas: BitmapData, sp: Sprite) { this.o = new Point(o, o); p = new Point(30 * Math.sin(r), 30 * Math.cos(r)); b = new Point(); v = new Point(2 * Math.cos(r), 2 * Math.sin(r)); color = Test.color; this.canvas = canvas; this.sp = sp; } public function move(): void { b.x = p.x; b.y = p.y; p = p.add(v); v.x += ((Math.random() * 100) - (Math.random() * 100)) * 0.005; v.y += ((Math.random() * 100) - (Math.random() * 100)) * 0.005; draw(); age++; if (age > 200) { var t: Number = Math.random() * Math.PI * 2; p.x = 30 * Math.sin(t); p.y = 30 * Math.cos(t); b.x = 0; b.y = 0; v.x = 0; v.y = 0; color = Test.color; age = 0; } } private function draw(): void { var g: Graphics = sp.graphics; g.clear(); g.lineStyle(1, color, 0.3); g.moveTo(o.x + b.x, o.y + b.y); g.lineTo(o.x + p.x, o.y + p.y); g.moveTo(o.x - b.x, o.x + b.y); g.lineTo(o.x - p.x, o.x + p.y); g.moveTo(o.x + b.x, o.y - b.y); g.lineTo(o.x + p.x, o.y - p.y); g.moveTo(o.x - b.x, o.x - b.y); g.lineTo(o.x - p.x, o.x - p.y); canvas.draw(sp); } }