flash on 2011-3-23
/**
* Copyright yama3 ( http://wonderfl.net/user/yama3 )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/n2yu
*/
package {
import flash.display.Sprite;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.geom.ColorTransform;
import flash.display.BitmapDataChannel;
import flash.events.Event;
import flash.events.MouseEvent;
import frocessing.core.F5BitmapData2D;
[SWF(width=465,height=465,backgroundColor=0,frameRate=60)]
public class FlashTest extends Sprite {
private var fb:F5BitmapData2D;
private var colortrans:ColorTransform;
private var vectormap:BitmapData;
private var particles:Array;
private var particle_number:uint = 50;
private var size:Number = 465;
public function FlashTest() {
//F5BitmapDataを作成して表示リストに追加
fb = new F5BitmapData2D(size, size, false, 0);
fb.colorMode("hsv",1.0);
addChild(new Bitmap(fb.bitmapData));
//エフェクト初期化
colortrans = new ColorTransform(0.82, 0.82, 0.82);
//ベクトルマップとパーティクルの初期化
vectormap = new BitmapData(size, size, false, 0);
reset();
//イベント
addEventListener(Event.ENTER_FRAME, enterframe);
stage.addEventListener(MouseEvent.CLICK, reset);
}
private function reset(e:MouseEvent = null):void {
//ベクトルマップの初期化
var randomSeed:int = Math.random()*0xffffff;
var colors:uint = BitmapDataChannel.RED | BitmapDataChannel.GREEN;
vectormap.perlinNoise(size/2, size/2, 2, randomSeed, false, true, colors);
//パーティクルの初期化
var c:uint;
particles = new Array(particle_number);
for(var i:int = 0; i < particle_number; i++) {
if(Math.random() > 0.05)
c = fb.color(0.95, 0.6+Math.random()*0.4, 0.5+Math.random()*0.5);
else
c = 0xffffff;
particles[i] = new Particle(Math.random()*size, Math.random()*size, c);
//エフェクト
}
fb.bitmapData.colorTransform(fb.bitmapData.rect, colortrans);
}
private function enterframe(e:Event):void {
//描画
fb.beginDraw();
for(var i:int=0; i<particle_number; i++) {
var p:Particle = particles[i];
var x0:Number = p.x;
var y0:Number = p.y;
var vx0:Number = p.vx;
var vy0:Number = p.vy;
//加速度と速度の減衰
p.ax *= 0.58;
p.ay *= 0.58;
p.vx *= 0.84;
p.vy *= 0.84;
//ベクトルマップのPixel値から加速度を算出
var col:uint = vectormap.getPixel(p.x, p.y);
p.ax += ((col >> 16 & 0xff) - 128)*0.02;
p.ay += ((col >> 8 & 0xff) - 128)*0.02;
//加速度から速度と位置を算出
var x1:Number = p.x += p.vx += p.ax;
var y1:Number = p.y += p.vy += p.ay;
if(p.x > size) {p.x -= size;}
else if(p.x < 0) {p.x += size;}
if(p.y > size) {p.y -= size;}
else if(p.y < 0) {p.y += size;}
//線の描画
var x2:Number = x1 + p.vy / 3;
var y2:Number = y1 - p.vx / 3;
var x3:Number = x0 + vy0 / 3;
var y3:Number = y0 - vx0 / 3;
fb.noStroke();
fb.fill(p.color);
fb.quad(x0, y0, x1, y1, x2, y2, x3, y3);
fb.stroke(0, 0.1);
fb.line(x0, y0, x1, y1);
fb.line(x2, y2, x3, y3);
}
fb.endDraw();
}
}
}
//パーティクルクラス
class Particle {
//位置
public var x:Number;
public var y:Number;
//加速度
public var ax:Number = 0;
public var ay:Number = 0;
//速度
public var vx:Number = 0;
public var vy:Number = 0;
//色
public var color:uint;
function Particle(px:Number, py:Number, col:uint) {
x = px;
y = py;
color = col;
}
}