forked from: forked from: forked from: 10万個ぱーてぃくる - 軽く高速化
changed:
- 上下左右端で反射するようにした
- TestMainのwとhをdraw内でlocal変数に入れるようにした
/*
changed:
- 上下左右端で反射するようにした
- TestMainのwとhをdraw内でlocal変数に入れるようにした
*/
// forked from toytools's forked from: forked from: 10万個ぱーてぃくる - 軽く高速化
// forked from beinteractive's forked from: 10万個ぱーてぃくる - 軽く高速化
// forked from bkzen's 10万個ぱーてぃくる
package
{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import net.hires.debug.Stats;
/**
* なんかいっぱい動かすテスト
* 洗濯機みたいになってます。
* @author jc at bk-zen.com
*/
[SWF(backgroundColor = "0x000000", frameRate = "30")]
public class Test3 extends Sprite
{
protected const NUM_OF_PARTICLES: int = 100000;
private var main: TestMain;
public function Test3()
{
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(stage.stageWidth, stage.stageHeight, NUM_OF_PARTICLES);
addChild(main.view);
addChild(new Stats());
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
stage.addEventListener(Event.RESIZE, onResize);
stage.addEventListener(MouseEvent.CLICK, onClick);
addEventListener(Event.ENTER_FRAME, onEnter);
}
private function onClick(e:MouseEvent):void
{
main.change();
}
private function onEnter(e:Event):void
{
main.draw(mouseX, mouseY);
}
// りサイズ （未実装）
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;
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: Particle;
private var num: int;
private var color: uint = 0xF0F0FF;
private var count: int = 0;
private var colorTr: ColorTransform;
public function TestMain(w: int, h: int, numOfParticles: 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 prev: Particle = particles = new Particle();
var p: Particle;
while (++i <= num)
{
p = new Particle();
p.x = Math.random() * w;
p.y = Math.random() * h;
prev.next = p;
prev = p;
}
colorTr = new ColorTransform(1, 1, 1, 1, -64, -32, -32);
}
// 描画、マウスの判定を後で追加予定
public function draw(mouseX: Number, mouseY: Number): void
{
var p: Particle = particles;
var col: uint;
bmpData.lock();
bmpData.colorTransform(bmpData.rect, colorTr);
var lw:int = this.w;
var lh:int = this.h;
while ((p = p.next) != null)
{
col = forceMap.getPixel(p.x >> 1, p.y >> 1);
p.x += (p.vx = p.vx * 0.98 + (( col >> 16 & 0xff)-128) * 0.004);
p.y += (p.vy = p.vy * 0.98 + (( col >> 8 & 0xff)-128) * 0.004);
if (p.x < 0 || p.x >= lw){
p.vx *= -2;
}
if (p.y < 0 || p.y >= lw){
p.vy *= -2;
}
bmpData.setPixel(p.x >> 0, p.y >> 0, color);
}
bmpData.unlock();
}
public function change(): void
{
forceMap.perlinNoise(mw, mh, 4, Math.random() * 0xFFFF, false, true, 7);
}
public function resize(w: Number, h: Number): void
{
this.w = w;
this.h = h;
if (bmpData)
{
bmpData.dispose();
}
bmpData = new BitmapData(w, h, false, 0x00000000);
view.bitmapData = bmpData;
}
}
class Particle
{
public var x: Number = 0;
public var y: Number = 0;
public var vx: Number = 0;
public var vy: Number = 0;
public var next: Particle;
public function Particle()
{
}
}