forked from: [朝ワン]荒波日本海
久々の朝ワン(∪＾ω＾)ワン
荒波日本海！
岩壁にぶつかって荒々しく唸る日本海的なイメージ。
@author jc at bk-zen.com
/**
* Copyright undo ( http://wonderfl.net/user/undo )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/8hAa
*/
// forked from bkzen's [朝ワン]荒波日本海
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.BlurFilter;
import flash.geom.ColorTransform;
import flash.geom.Matrix;
import flash.geom.Point;
import net.hires.debug.Stats;
/**
* 久々の朝ワン(∪＾ω＾)ワン
* 荒波日本海！
* 岩壁にぶつかって荒々しく唸る日本海的なイメージ。
* @author jc at bk-zen.com
*/
[SWF (backgroundColor = "0x0", frameRate = "30", width = "465", height = "465")]
public class Asawon7 extends Sprite
{
private var bmd: BitmapData;
private var forceMap: BitmapData;
private const PARTICLE_NUM: int = 50000;
private const WIDTH: int = 465;
private const HEIGHT: int = 465;
private var COLOR: uint = 0xff8888;
private var particle: Particle;
private var seed: int;
private var mw: int;
private var mh: int;
private var arr: Array;
private var point: Point;
private var point2: Point;
private var basePoint: Point = new Point();
private var colorTf: ColorTransform;
private var blur: BlurFilter;
private var baseMatrix: Matrix;
public function Asawon7()
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e: Event = null): void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
//
addChild(new Bitmap(bmd = new BitmapData(WIDTH, HEIGHT, false, 0x0)));
var p: Particle, prev: Particle = particle = new Particle();
forceMap = new BitmapData(WIDTH / 2, HEIGHT / 2);
forceMap.perlinNoise(mw = forceMap.width >> 2, mh = forceMap.height >> 2, 4,
seed = Math.random() * 0xFFFF, false, true, 3);
arr = [point = new Point(), point2 = new Point()];
for (var i:int = 0; i < PARTICLE_NUM; i++)
{
p = new Particle();
p.x = WIDTH * Math.random();
p.y = HEIGHT * Math.random();
prev = prev.next = p;
}
colorTf = new ColorTransform(1, 1, 1, 1, -2, -8, -8);
blur = new BlurFilter(2, 2);
addEventListener(Event.ENTER_FRAME, loop);
addChild(new Stats());
mouseChildren = mouseEnabled = false;
baseMatrix = new Matrix(0.75, 0.31, -0.72, 0.67, 227.05, 10);
}
private function loop(e: Event): void
{
var p: Particle = particle, col: uint, h: Number;
point.x ++;
point2.y ++;
forceMap.perlinNoise(mw, mh, 4, seed, false, true, 3, false, arr);
bmd.lock();
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 += WIDTH;
else if (p.x >= WIDTH) p.x -= WIDTH;
if (p.y < 0) p.y += HEIGHT;
else if (p.y >= HEIGHT) p.y -= HEIGHT;
h = p.vx * p.vy * 3;
h = h < 0 ? h : - h;
bmd.setPixel(p.x * baseMatrix.a + p.y * baseMatrix.c + baseMatrix.tx,
p.x * baseMatrix.b + p.y * baseMatrix.d + baseMatrix.ty + h, COLOR);
}
bmd.applyFilter(bmd, bmd.rect, basePoint, blur);
bmd.colorTransform(bmd.rect, colorTf);
bmd.unlock();
}
}
}
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;
}