七色流れ星（未達）forked from: Saqoosha challenge for amateurs
元ネタ
* iPoneAppのORBITALを再現（してみたかった）
* もう少しそれっぽくなるように調整する
*
* パクリ元
*
* パーティクル周りはほとんどここのソース
* Particle Sample Part2 | wonderfl build flash online
* http://wonderfl.net/code/22a06782b22470146ea62c1040ba435928fbf21c
*
* HSV指定でキレイな虹のグラデーションを作る
* forked from: Saqoosha challenge for amateurs | wonderfl build flash online
* http://wonderfl.net/code/c9d20ca02ec68185824de3c939dac44483ce5880
*
/**
* Copyright fumix ( http://wonderfl.net/user/fumix )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/pqoS
*/
/*
* 元ネタ
* iPoneAppのORBITALを再現（してみたかった）
* もう少しそれっぽくなるように調整する
*
* パクリ元
*
* パーティクル周りはほとんどここのソース
* Particle Sample Part2 | wonderfl build flash online
* http://wonderfl.net/code/22a06782b22470146ea62c1040ba435928fbf21c
*
* HSV指定でキレイな虹のグラデーションを作る
* forked from: Saqoosha challenge for amateurs | wonderfl build flash online
* http://wonderfl.net/code/c9d20ca02ec68185824de3c939dac44483ce5880
*
*/
package {
import flash.display.Sprite;
import flash.display.StageQuality;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
//import net.hires.debug.Stats;
[SWF(width="465", height="465", backgroundColor="0x000000", frameRate="30")]
public class particleSample extends Sprite {
private var _particles : Array = [];
private var _emitter : Emitter;
private var _rainbowCount : Number;
// 1フレーム間に発生させる Particle 数
private const PARTICLE_NUM : uint = 30;
public function particleSample() {
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.quality = StageQuality.LOW;
setup();
//addChild(new Stats());
}
private function setup() : void {
_emitter = new Emitter();
_rainbowCount = 0;
addChild(_emitter);
for (var i : uint = 0;i < 1000; i++) {
_particles.push(new Particle());
}
addEventListener(Event.ENTER_FRAME, draw);
stage.addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
}
private function draw(event : Event) : void {
_emitter.update();
for each (var p:Particle in _particles) {
if (!p.destroy) {
//p.vy += 0.99;
/*
if (p.y >= 400) {
p.vy *= -0.9;
}
*
*/
p.update();
}
}
_rainbowCount += 0.02;
if(_rainbowCount > 1) _rainbowCount -= 1;
}
private function mouseDown(event : MouseEvent) : void {
addEventListener(Event.ENTER_FRAME, createParticle);
stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
_emitter.updatePosition();
}
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(_rainbowCount);
addChild(p);
count++;
}
if (count > PARTICLE_NUM) break;
}
}
}
}
import frocessing.color.ColorLerp;
import org.libspark.betweenas3.core.easing.IEasing;
import org.libspark.betweenas3.easing.Linear;
import flash.display.GradientType;
import flash.display.SpreadMethod;
import flash.display.Sprite;
import flash.geom.Matrix;
class Emitter extends Sprite {
public var vx : Number = 0;
public var vy : Number = 0;
public var _d : Number = 0;
private var dx : Number = 0;
private var dy : Number = 0;
public function Emitter() {
//graphics.beginFill(0x808080);
//graphics.drawCircle(0, 0, 10);
//graphics.endFill();
//blendMode = "add";
}
public function update() : void {
dx = root.mouseX - x;
dy = root.mouseY - y;
_d = 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 *= 0.5;
vy *= 0.5;
x += vx;
y += vy;
//x = root.mouseX;
//y = root.mouseY;
}
public function get d() : Number {
return _d;
}
public function updatePosition():void{
//dx = root.mouseX - x;
//dy = root.mouseY - y;
}
}
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;
private var _grad : Gradation;
public function Particle() {
//size = Math.random() * 10;
size = 10;
_destroy = true;
// Gradationクラスを作る。任意の数のカラー値を渡すことができる。
_grad = new Gradation(0xff0000, 0x00ff00, 0x0000ff,0xff0000);
}
public function init(d : Number = 0) : void {
vx = Math.random() * 10 - 5;
vy = Math.random() * 10 - 5;
life = Math.random() * 30 + 5;
_count = 0;
_destroy = false;
var color : Number = _grad.getColor(d);
var fillType : String = GradientType.RADIAL;
//var colors : Array = [color , 0x000000];
var colors : Array = [color , color];
var alphas : Array = [100, 0];
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();
graphics.beginFill(0xFFFFFF, 0.8);
graphics.drawCircle(0, 0, 1);
graphics.endFill();
//filters = [new BlurFilter(4,4,2)];
// 大量のオブジェクトを重ねるとおかしくなる
blendMode = "add";
}
public function update() : void {
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;
}
}
class Gradation {
private var _colors : Array;
private var _easing : IEasing;
public function Gradation(...args) {
_colors = args.concat();
_easing = Linear.linear;
}
public function setEasing(easing : IEasing) : void {
_easing = easing;
}
public function getColor(position : Number) : uint {
position = (position < 0 ? 0 : position > 1 ? 1 : position) * (_colors.length - 1);
var idx : int = position;
var alpha : Number = _easing.calculate(position - idx, 0, 1, 1);
if (alpha == 0) {
return _colors[idx];
} else {
return ColorLerp.lerp(_colors[idx], _colors[idx + 1], alpha);
}
}
}