forked from: forked from: forked from: 10万個ぱーてぃくる
Radioactive Fog
// forked from correa_elias's forked from: forked from: 10万個ぱーてぃくる
//Radioactive Fog
package {
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.utils.Timer;
import flash.events.TimerEvent;
public class Particles extends Sprite {
protected const NUM_OF_PARTICLES:int=5000;
protected const WIDTH:int=320;
protected const HEIGHT:int=240;
protected const BLUR:int=14;
public var color:uint=0xffffff;
private var main: TestMain;
protected var timer:Timer;
public function Particles() {
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void {
removeEventListener(Event.ADDED_TO_STAGE, init);
main = new TestMain(WIDTH, HEIGHT, NUM_OF_PARTICLES, color, BLUR);
main.resize(stage.stageWidth, stage.stageHeight);
addChild(main.view);
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
stage.addEventListener(Event.RESIZE, onResize);
addEventListener(Event.ENTER_FRAME, onEnter);
timer=new Timer(5000);
timer.addEventListener(TimerEvent.TIMER, changeForceMap);
timer.start();
}
private function changeForceMap(event:TimerEvent):void{
var r:int=Math.random()*0xff;
var g:int=Math.random()*0xff;
var b:int=Math.random()*0xff;
main.c=r<<16 | g<<8 | b;
main.change();
}
private function onEnter(e:Event):void {
main.draw(mouseX, mouseY);
}
private function onResize(e:Event):void {
main.resize(stage.stageWidth, stage.stageHeight);
}
}
}
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.geom.ColorTransform;
import flash.geom.Point;
import flash.utils.ByteArray;
import flash.filters.BlurFilter;
class TestMain {
private var w: int;
private var h: int;
private var mw: int;
private var mh: int;
public var view: Bitmap;
private var bmpData: BitmapData;
private var forceMap: BitmapData;
private var randomSeed: int;
private var particles: Array = [];
private var num: int;
private var count: int = 0;
private var colorTr: ColorTransform;
public var c:uint;
private var b:int;
public function TestMain(w: int, h: int, numOfParticles: int, color:uint, blur:int){
this.w = w;
mw = w >> 1;
this.h = h;
mh = h >> 1;
bmpData = new BitmapData(w, h, false, 0x00000000);
forceMap = new BitmapData(mw, mh, false);
forceMap.perlinNoise(mw >> 1, mh >> 1, 4, Math.random() * 0xFFFF, false, true, 3);
view = new Bitmap(bmpData);
num = numOfParticles;
var i: int;
var p: Particle;
while (i < num) {
p = new Particle();
p.x = Math.random() * w;
p.y = Math.random() * h;
particles.push(p);
i++;
}
colorTr = new ColorTransform(1, 1, 1, 1, 3, 2, 0, -2);
c=color;
b=blur;
}
public function draw(mouseX: Number, mouseY: Number): void {
var i: int;
var p: Particle;
var col: uint;
bmpData.lock();
bmpData.colorTransform(bmpData.rect, colorTr);
while (i < num) {
p = Particle(particles[i]);
col = forceMap.getPixel(p.x >> 1, p.y >> 1);
p.vx = p.vx * 0.98 + (( col >> 16 & 0xff)-128) * 0.004;
p.vy = p.vy * 0.98 + (( col >> 8 & 0xff)-128) * 0.004;
p.x += p.vx;
p.y += p.vy;
if (p.x < 0) p.x += w;
else if (p.x >= w) p.x -= w;
if (p.y < 0) p.y += h;
else if (p.y >= h) p.y -= h;
bmpData.setPixel(p.x, p.y, c);
i++;
}
bmpData.unlock();
bmpData.applyFilter(bmpData, bmpData.rect, new Point(), new BlurFilter(b,b,1));
}
public function change(): void {
forceMap.perlinNoise(mw, mh, 4, Math.random() * 0xFFFF, false, true, 7);
}
public function resize(w: Number, h: Number): void {
view.width=w;
view.height=h;
}
}
class Particle {
public var x: Number = 0;
public var y: Number = 0;
public var vx: Number = 0;
public var vy: Number = 0;
}