forked from: forked from: [朝ワン]何か涼しそうなやつ > 麦
自家製ベジエ曲線にしてみたけど、ブレンドの仕方間違ってるのかなあ・・
// forked from dizgid's forked from: [朝ワン]何か涼しそうなやつ > 麦
// forked from bkzen's [朝ワン]何か涼しそうなやつ
// forked from hacker_ij48yrxl's flash on 2009-5-10
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Graphics;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.BlurFilter;
import flash.geom.ColorTransform;
import flash.geom.Point;
import net.hires.debug.Stats;
// 自家製ベジエ曲線にしてみたけど、ブレンドの仕方間違ってるのかなあ・・
[SWF(width="465", height="465", backgroundColor="0x000000", frameRate="60")]
public class Asawon6 extends Sprite
{
public static const PERLIN_WIDTH:int = 40;
public static const PERLIN_HEIGHT:int = 60;
public static const WIDTH:int = 500;
public static const HEIGHT:int = 400;
public static const num:Number = 255;
private var px:Number = 0;
private var offset:Array;
private var bmd:BitmapData;
private var p:Point;
private var blur:BlurFilter;
private var colorTf:ColorTransform;
private var bmpData:BitmapData;
private var _randPos:Array;
public function Asawon6():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
stage.quality = "low";
// entry point
//filters = [new BlurFilter(4,0)];
offset = [new Point(px += 0.5, 0), new Point( -px / 2, 0), new Point(0, 0)];
bmpData = new BitmapData(PERLIN_WIDTH, PERLIN_HEIGHT, false);
bmd = new BitmapData(465, 465, false, 0x0);
p = new Point();
blur = new BlurFilter(8, 8);
colorTf = new ColorTransform(1, 1, 1, 1, -1, -10, -20, -5);
createRandPos();
addChild(new Bitmap(bmd, "auto", true));
addChild(new Stats());
addEventListener(Event.ENTER_FRAME, loop);
}
private function createRandPos():void
{
_randPos = [];
for(var i:int=0; i < PERLIN_WIDTH * PERLIN_HEIGHT; i++){
_randPos.push(Math.random()*20);
}
}
private function loop(e:Event):void {
Point(offset[0]).x = px += 0.8;
Point(offset[1]).x = -px / 2;
bmpData.perlinNoise(PERLIN_WIDTH, PERLIN_HEIGHT, 3, 6456, true, true, 2 | 1, false, offset);
bmd.lock();
//bmd.fillRect(bmd.rect, 0x0);
bmd.colorTransform(bmd.rect, colorTf);
bmd.applyFilter(bmd, bmd.rect, p, blur);
for (var j:int = 0; j < PERLIN_HEIGHT - 1; j++) {
for (var i:int = 0; i < PERLIN_WIDTH - 1; i++) {
var value1:uint = bmpData.getPixel(i, j) >>> 16;
var value2:uint = bmpData.getPixel(i + 1, j) >>> 16;
var rp : Number = _randPos[i * (PERLIN_HEIGHT - 1) + j];
drawCurve(bmd,
i * WIDTH / (PERLIN_WIDTH - 1) + rp -30, HEIGHT / 2 + j * 5 + 20,
value1 + i * WIDTH / (PERLIN_WIDTH - 1) -128 + rp -30, HEIGHT / 2 + j * 4.5 - rp,
value1 + i * WIDTH / (PERLIN_WIDTH - 1) -128 + rp -30, HEIGHT / 2 + j * 4.0 - rp,
0x060c0c, 0.8
);
}
}
bmd.unlock();
}
private static function drawCurve(bmd : BitmapData, x1 : Number, y1 : Number, xc : Number, yc : Number, x2 : Number, y2 : Number, color : uint, fill : Number = 1.0) : void
{
var nDiv : int = (
Math.sqrt((xc - x1) * (xc - x1) + (yc - y1) * (yc - y1)) +
Math.sqrt((x2 - xc) * (x2 - xc) + (y2 - yc) * (y2 - yc))
) * fill + 1;
for(var i : int = 0;i < nDiv;i++){
var t : Number = i / nDiv;
var x1c : Number = x1 + t * (xc - x1);
var y1c : Number = y1 + t * (yc - y1);
var xc2 : Number = xc + t * (x2 - xc);
var yc2 : Number = yc + t * (y2 - yc);
var xxx : int = x1c + t * (xc2 - x1c);
var yyy : int = y1c + t * (yc2 - y1c);
var col : uint = bmd.getPixel32(xxx, yyy);
// var a : uint = (col >>> 24) + (color >>> 24); if(a > 255)a = 255;
var r : uint = (col >>> 16 & 255) + (color >>> 16 & 255); if(r > 255)r = 255;
var g : uint = (col >>> 8 & 255) + (color >>> 8 & 255); if(g > 255)g = 255;
var b : uint = (col & 255) + (color & 255); if(b > 255)b = 255;
bmd.setPixel(xxx, yyy, r << 16 | g << 8 | b);
}
}
}
}