forked from: Blured Rays
ATTRACTORS VERSION
BASED ON
Happy Place
j.tarbell March, 2004
Albuquerque, New Mexico
complexification.net
Processing 0085 Beta syntax update
j.tarbell April, 2005
// forked from peko's Blured Rays
// forked from peko's Rays
// forked from peko's Tarbell`s attractors
// forked from peko's forked from: forked from: forked from: BrownianMotion
// forked from nutsu's forked from: forked from: BrownianMotion
// forked from ton's forked from: BrownianMotion
// forked from ton's BrownianMotion
// ATTRACTORS VERSION
// BASED ON
// Happy Place
// j.tarbell March, 2004
// Albuquerque, New Mexico
// complexification.net
// Processing 0085 Beta syntax update
// j.tarbell April, 2005
package {
import flash.display.*;
import flash.filters.*;
import flash.events.*;
import flash.geom.*;
import frocessing.core.F5BitmapData2D;
import net.hires.debug.Stats;
[SWF(frameRate="60", backgroundColor="#FFFFFF")]
public class BrownianMotion extends Sprite {
private const N:int = 50;
private const MAX_R:int = 200;
private const W:int = 465;
private const H:int = 465;
private var fg:F5BitmapData2D;
private var bmp:Bitmap;
private var timeout:uint = 0;
// original Tarbell`s palette
private var p1:Array = [
0x3a242b, 0x3b2426, 0x352325, 0x836454,
0x7d5533, 0x8b7352, 0xb1a181, 0xa4632e, 0xbb6b33, 0xb47249,
0xca7239, 0xd29057, 0xe0b87e, 0xd9b166, 0xf5eabe, 0xfcfadf,
0xd9d1b0, 0xfcfadf, 0xd1d1ca, 0xa7b1ac, 0x879a8c, 0x9186ad,
0x776a8e, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000, 0xFFFFFF, 0xFFFFFF,
0xFFFFFF, 0xFFFFFF, 0xFFFFFF
];
private var p2:Array = [0xFFFFFF, 0x565353, 0xBD3B00, 0xCD994F, 0xE3DACE, 0x2789B7];
private var p3:Array = [0xFFFFFF, 0x721300, 0xCC0000, 0xCCAA00, 0xFFBB00, 0xFFFFB6];
private var p4:Array = [0xFFFFFF, 0x335533, 0x0055cc, 0x44ccdd, 0x99dddd, 0xcceeff];
private var p5:Array = [0xFFFFFF, 0x191F13, 0x2F7A10, 0x006CFF, 0xFFE28E, 0xCDAB23];
private var palettes:Array = [p1, p2, p3, p4, p5];
//使用するカラーパレットを選択
private var currentPalette:Array = palettes[Math.floor(Math.random()*palettes.length)];
function BrownianMotion() {
fg = new F5BitmapData2D(W, H, false, 0xFFFFFF);
bmp = new Bitmap(fg.bitmapData);
addChild(bmp);
fg.strokeAlpha = 1;
for (var i:int = 0; i < N; i++) {
var d:Dot = new Dot(currentPalette[Math.floor(Math.random()*currentPalette.length)]);
var angle:Number = Math.random() * (2 * Math.PI);
d.x = Math.cos(angle) * MAX_R;
d.y = Math.sin(angle) * MAX_R;
d.x+=(Math.random()-Math.random())*50;
d.y+=(Math.random()-Math.random())*50;
d.vx = 0;
d.vy = 0;
}
//addChild( new Stats() );
addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
}
private function onEnterFrameHandler(event:Event):void
{
fg.beginDraw();
fg.translate( W>>1, H>>1 );
var bmd:BitmapData = fg.bitmapData;
var boom:Boolean = (timeout++)>500;
if (boom) {
timeout = 0;
currentPalette = palettes[Math.floor(Math.random()*palettes.length)];
//bmd.applyFilter(bmd, bmd.rect, new Point(0,0), new BlurFilter());
bmd.applyFilter(bmd, bmd.rect, new Point(), new ColorMatrixFilter([
1, 0, 0, 0, 128,
0, 1, 0, 0, 128,
0, 0, 1, 0, 128,
0, 0, 0, 1, 0
]));
}
for each(var d:Dot in Dot.dots) {
if (boom) {
var angle:Number = Math.random() * (2 * Math.PI);
d.x = Math.cos(angle) * MAX_R;
d.y = Math.sin(angle) * MAX_R;
d.x+=(Math.random()-Math.random())*50;
d.y+=(Math.random()-Math.random())*50;
d.color = currentPalette[Math.floor(Math.random()*currentPalette.length)]
}
d.update();
var t:Dot = Dot.dots[d.targetID];
var pp:uint = Math.abs(t.x-d.x)/(1+Math.random()*2);
fg.strokeColor = d.color
for (var i:uint =0; i<=pp; i+=(1+Math.random()*3)){
var px:int = d.x - (t.x-d.x)*(pp-i)/pp;
var py:int = d.y - (t.y-d.y)*(pp-i)/pp;
fg.strokeAlpha = (pp-i)/pp;
fg.pixel( px, py );
}
}
fg.endDraw();
bmd.applyFilter(bmd, bmd.rect, new Point, new BlurFilter(0,2,1));
bmd.applyFilter(bmd, bmd.rect, new Point, new ColorMatrixFilter([
1, 0, 0, 0, 0.5,
0, 1, 0, 0, 0.5,
0, 0, 1, 0, 0.5,
0, 0, 0, 1, 0
]));
}
}
}
class Dot{
//x方向速度
public var vx:Number;
//y方向速度
public var vy:Number;
//x座標
public var x:Number;
//y座標
public var y:Number;
public var color:uint;
private const X:Number = 1;
//空気抵抗
private const F:Number = 0.8;
//インスタンス配列
public static var dots:Array = [];
public var targetID:int;
//コンストラクタ
function Dot(color:uint) {
this.color = color;
//既存のインスタンスから一つをランダムに選択
targetID = Math.floor(Math.random()*dots.length);
dots.push(this);
}
public function update():void {
//0.5%の確率でtargetIDを振り直し
if(Math.random()>0.995) targetID = Math.floor(Math.random()*dots.length);
//近づくほど減速する
vx -= (x - dots[targetID].x)/500;
vy -= (y - dots[targetID].y)/500;
//時間経過に伴い原則
vx *= F;
vy *= F;
//x += vx;
y += vy;
}
}