forked from: Light Effect
Particle Sample Part2 http://wonderfl.net/code/22a06782b22470146ea62c1040ba435928fbf21c
浮かんで消える http://wonderfl.net/code/c4b218d595f245b5ac1eb97903e10e5fe973dbac
光の表現のサンプルです。
/**
* Copyright hacker_aft9cz2z ( http://wonderfl.net/user/hacker_aft9cz2z )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/sXnl
*/
// forked from HaraMakoto's Light Effect
// forked from cellfusion's Particle Sample
// Particle Sample Part2 http://wonderfl.net/code/22a06782b22470146ea62c1040ba435928fbf21c
// 浮かんで消える http://wonderfl.net/code/c4b218d595f245b5ac1eb97903e10e5fe973dbac
// write as3 code here..
// 光の表現のサンプルです。
package
{
import flash.display.*;
import flash.events.*;
import flash.filters.BlurFilter;
import flash.geom.Matrix;
import flash.geom.Point;
import net.hires.debug.Stats;
[SWF(width="465", height="465", backgroundColor="0x000000", frameRate="30")]
public class LightEffect extends Sprite
{
private var _mirrorBmp:Bitmap = new Bitmap();
private var _mirrorBmd:BitmapData = new BitmapData(465,465,false,0);
private var _mirrorMtx:Matrix;
private var _transPoint:Point = new Point(465/2, 465/2);
private var _particleLayer:Sprite = new Sprite();
private var _particles:Array = [];
private var _emitter:Emitter;
// 1フレーム間に発生させる Particle 数
private const PARTICLE_NUM:uint = 1;
public function LightEffect()
{
stage.quality = StageQuality.LOW;
setup();
addChild(new Stats());
}
private function setup():void
{
_mirrorBmp.bitmapData = _mirrorBmd;
addChild(_mirrorBmp);
_emitter = new Emitter();
addChild(_particleLayer);
_particleLayer.addChild(_emitter);
for (var i:uint = 0; i < 25; i++) {
_particles.push(new Particle());
}
addEventListener(Event.ENTER_FRAME, draw);
//stage.addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
addEventListener(Event.ENTER_FRAME, createParticle);
}
private function draw(event:Event):void
{
_emitter.update();
for each (var p:Particle in _particles) {
if (!p.destroy) {
if (p.y >= 10) {
p.vy *= -0.9;
p.vx *= -0.9;
}
p.update();
}
}
//拡大反射
_mirrorMtx = new Matrix();
//var ram:Number = 30+2*Math.random();
//var ram:Number = 8 + Math.random();
var ram:Number = 5 + Math.random() * 0.25;
_mirrorMtx.translate(-_transPoint.x, -_transPoint.y);
_mirrorMtx.scale(ram,ram);
_mirrorMtx.translate(_transPoint.x, _transPoint.y);
_mirrorBmd.fillRect(_mirrorBmd.rect, 0x00000000);
_mirrorBmd.draw( _particleLayer, _mirrorMtx);
}
/*private function mouseDown(event:MouseEvent):void
{
addEventListener(Event.ENTER_FRAME, createParticle);
stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
_transPoint.x = mouseX;
_transPoint.y = mouseY;
}*/
/*private function mouseUp(event:MouseEvent):void
{
stage.removeEventListener(MouseEvent.MOUSE_UP, mouseUp);
removeEventListener(Event.ENTER_FRAME, createParticle);
}*/
private function createParticle(event:Event):void
{
var count:uint = 0;
for each (var p:Particle in _particles) {
// 停止している Particle を探す
if (p.destroy) {
p.x = _emitter.x;
p.y = _emitter.y;
p.init();
_particleLayer.addChild(p);
count++;
}
if (count > PARTICLE_NUM) break;
}
}
}
}
import flash.display.Sprite;
import flash.display.GradientType;
class Emitter extends Sprite
{
public var vx:Number = 0;
public var vy:Number = 0;
public function Emitter()
{
x = 465/2;
y = 465/2;
}
public function update():void
{
/*var dx:Number = root.mouseX - x;
var dy:Number = root.mouseY - y;*/
var dx:Number = 465/2 - x;
var dy:Number = 465/2 - y;
var d:Number = Math.sqrt(dx*dx+dy*dy) * 0.2;
var rad:Number = Math.atan2(dy, dx);
vx += Math.cos(rad)*d;
vy += Math.sin(rad)*d;
vx *= 0.7;
vy *= 0.7;
x += vx;
y += vy;
}
}
import flash.filters.BlurFilter;
import flash.geom.Matrix;
import flash.display.SpreadMethod;
class Particle extends Sprite
{
public var vx:Number;
public var vy:Number;
public var life:Number;
public var size:Number;
private var _count:uint;
private var _destroy:Boolean;
/**
* ブラウン運動関連
*/
private var friction:Number = 0.33//0.99;
private var vectx:Number = -0.4;
private var vecty:Number = -0.4//-0.8;
private var xrandom:Number = 0.3//0.8;
private var yrandom:Number = 0.3;
public function Particle()
{
size = 10 + Math.random() * 10//30;
/*var red:uint = Math.floor(Math.random()*100+156);
var blue:uint = Math.floor(Math.random()*100+100);
var green:uint = Math.floor(Math.random()*156);*/
var red:uint = Math.floor(Math.random()*230);
var blue:uint = Math.floor(Math.random()*160);
var green:uint = Math.floor(Math.random()*200);
var color:Number = (red << 16) | (green << 8) | (blue);
var fillType:String = GradientType.RADIAL;
var colors:Array = [color , 0x000000];
var alphas:Array = [100, 100];
var ratios:Array = [0x00, 0xFF];
var mat:Matrix = new Matrix();
mat.createGradientBox(size * 2, size * 2, 0, -size, -size);
var spreadMethod:String = SpreadMethod.PAD;
graphics.clear();
graphics.beginGradientFill(fillType, colors, alphas, ratios, mat, spreadMethod);
graphics.drawCircle(0, 0, size);
graphics.endFill();
// 大量のオブジェクトを重ねるとおかしくなる
blendMode = "add";
_destroy = true;
}
public function init():void
{
vx = Math.random() * 20 - 10;
vy = Math.random() * 20 - 10;
life = Math.random() * 20 + 10;
_count = 0;
_destroy = false;
}
public function update():void
{
vx += Math.random()*xrandom + vectx;
vy += Math.random()*yrandom + vecty;
vx *= friction;
vy *= friction;
x += vx;
y += vy;
_count++;
// 死亡フラグ
if (life < _count) {
_destroy = true;
parent.removeChild(this);
}
}
public function get destroy():Boolean
{
return _destroy;
}
}