forked from: C
/**
* Copyright makc3d ( http://wonderfl.net/user/makc3d )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/9p85
*/
// forked from Nyarineko's C
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Point;
import flash.geom.Rectangle;
[SWF(width = "465", height = "465", backgroundColor = "0xFFFFFF", frameRate = "60")]
public class Main extends Sprite
{
private const M_WIDTH:Number = 700;
private const M_HEIGH:Number = 700;
private var _canvas:BitmapData;
private var _bmp:Bitmap;
private var _objArray:Array;
private var flg:Boolean = false;
private var time:Number = 0;
private var _sp:Sprite;
//------------------------------------------------------
//コンストラクタ
//------------------------------------------------------
public function Main()
{
_sp = new Sprite();
_canvas = new BitmapData(M_WIDTH, M_HEIGH, true, 0x99FFFFFF);
_bmp = new Bitmap(_canvas);
_bmp.smoothing = true;
_bmp.x = -M_WIDTH / 2;
_bmp.y = -M_HEIGH / 2;
_sp.addChild(_bmp);
_sp.x = M_WIDTH / 2-110;
_sp.y = M_HEIGH / 2-110;
addChild(_sp);
init();
stage.addEventListener(MouseEvent.CLICK,onClick);
stage.addEventListener(Event.ENTER_FRAME,enterframeHandler);
}
//------------------------------------------------------
//初期化
//------------------------------------------------------
private function init():void
{
time = 0;
_sp.rotation = Math.random()*360;
_objArray = [];
//パーティクルを初期化
for(var i:uint = 0;i < 700;i+=50){
for(var j:uint = 0;j < 700;j+=50){
var p:Particle = new Particle();
p.x = j;
p.y = i;
p.width = 50;
p.height = 50;
sliceObject(p);
}
}
var m:Number = _objArray.length;
for(var k:uint = 0;k < _objArray.length;k++){
if(k < m/2){
_objArray[k].delay = (m/2 - k)/2 + (Math.random() * 50 - 25);
}else{
_objArray[k].delay = (k - m/2)/2 + (Math.random() * 50 - 25);
}
if(Math.floor(p.y/50) % 2 == 0) p.y += 50;
trace(_objArray[k].delay);
}
}
private function sliceObject(p:Particle):void
{
if(p.width <= 10 || p.height <= 10 || Math.random() < 0.1){
_objArray.push(p);
return;
}
var r:Number = Math.random();
var np:Particle = new Particle();
if((r < 0.5 && p.width == p.height) || p.width > p.height){
np.x = p.x+p.width/2;
np.y = p.y;
p.width /= 2;
}else{
np.x = p.x;
np.y = p.y+p.height/2;
p.height /= 2;
}
np.width = p.width;
np.height = p.height;
if(Math.random() < 0.5){
_objArray.push(np);
sliceObject(p);
}else{
_objArray.push(p);
sliceObject(np);
}
}
private function enterframeHandler(e:Event):void
{
update();
}
private function onClick(e:MouseEvent):void
{
flg = !flg;
init();
}
//フレーム処理：描画
private function update():void {
var D2:Number = 0.5 * Math.sqrt (M_WIDTH*M_WIDTH + M_HEIGH*M_HEIGH);
/*if(flg)*/time++;
_canvas.lock();
_canvas.fillRect(new Rectangle(0, 0, 700, 700), 0xFFFFFF);
var sh:Shape = new Shape();
sh.graphics.beginFill(0x000000);
for each(var p:Particle in _objArray){
if (p.z > 50) {
p.z = 1;
// ideally we need to add more particles
// but that's not so good idea obviously
var d:Point = new Point (p.x - M_WIDTH/2, p.y - M_HEIGH/2);
if (d.length < Number.MIN_VALUE) d.x = 1;
d.normalize (d.length + D2);
p.x = d.x + M_WIDTH/2;
p.y = d.y + M_HEIGH/2;
}
var sx:Number = M_WIDTH/2 + (p.x - M_WIDTH/2) / p.z;
var sy:Number = M_HEIGH/2 + (p.y - M_HEIGH/2) / p.z;
var sW:Number = p.width / p.z;
var sH:Number = p.height / p.z;
sh.graphics.drawRect (sx, sy, sW, sH);
if(p.delay < time) p.z *= p.speed;
}
sh.graphics.endFill();
_canvas.draw(sh);
sh = null;
_canvas.unlock();
}
}
}
class Particle
{
public var x:Number;
public var y:Number;
public var width:Number;
public var height:Number;
public var z:Number;
public var delay:Number;
public var speed:Number;
public function Particle()
{
z = 1;
delay = 0;
speed = 1.02 + Math.random () * 0.08;
}
}