flash on 2010-5-28
@author imajuk
/**
* Copyright iriy ( http://wonderfl.net/user/iriy )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/2SnR
*/
package
{
import flash.display.StageScaleMode;
import flash.display.StageQuality;
import flash.display.Sprite;
import flash.display.Shape;
import flash.display.BlendMode;
import flash.display.IGraphicsFill;
import flash.display.GradientType;
import flash.geom.Matrix;
import flash.display.GraphicsGradientFill;
import flash.display.BitmapData;
import flash.display.Bitmap;
import org.libspark.thread.EnterFrameThreadExecutor;
import org.libspark.thread.Thread;
/**
* @author imajuk
*/
public class OceanCurve extends Sprite
{
public function OceanCurve()
{
Wonderfl.capture_delay(21);
Thread.initialize(new EnterFrameThreadExecutor());
stage.quality = StageQuality.HIGH;
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.frameRate = 60;
start();
}
private function start() : void
{
var w : int = stage.stageWidth;
var h : int = stage.stageHeight;
//=================================
// canvas
//=================================
var canvas : BitmapData = new BitmapData(w, h, true, 0xFFFFFFFF);
var canvas2 : BitmapData = canvas.clone();
var layer0:Shape = new Shape();
var layer1 : Bitmap = new Bitmap(canvas2);
layer1.blendMode = BlendMode.MULTIPLY;
var layer2 : Bitmap = new Bitmap(canvas);
layer2.blendMode = BlendMode.SCREEN;
var layer3 : Bitmap = new Bitmap(canvas);
layer3.blendMode = BlendMode.OVERLAY;
addChild(layer0);
addChild(layer1);
addChild(layer2);
addChild(layer3);
//=================================
// color
//=================================
var cl1 : int = 0x9264db;
var cl2 : int = 0x1ecee5;
var cl3 : int = 0x42347f;
var cl4 : int = 0xfb2edb;
//=================================
// background
//=================================
layer0.graphics.beginGradientFill(
GradientType.LINEAR,
[0xFFFFFF, cl4],
[1, 1],
[100,255],
getGradMatrix(h, Math.PI * .5)
);
layer0.graphics.drawRect(0, 0, w, h);
//=================================
// fill
//=================================
var fill1 : IGraphicsFill =
new GraphicsGradientFill(
GradientType.LINEAR,
[cl2, cl3],
[1, 1],
[0,255],
getGradMatrix(h, Math.PI * .5)
);
var fill2 : IGraphicsFill =
new GraphicsGradientFill(
GradientType.LINEAR,
[0xFFFFFF, cl1],
[1, 1],
[100,255],
getGradMatrix2(h, Math.PI * .5)
);
var fill3 : IGraphicsFill =
new GraphicsGradientFill(
GradientType.LINEAR,
[0xFFFFFF, cl1],
[1, 1],
[0,255],
getGradMatrix(h, -Math.PI * .5)
);
//=================================
// waves
//=================================
var wave1 : Wave = new Wave(w+50, h, null, fill1, 450, 38);
var wave2 : Wave = new Wave(w+50, h, null, fill2, 450, 30);
var wave3 : Wave = new Wave(w+50, h, null, fill3, 400, 50, WaveType.COS);
wave2.opposite = true;
wave2.rotation = 2;
wave1.y = wave2.y = wave3.y = 340;
//=================================
// wave updater
//=================================
new WaveUpdateThread(wave1, Math.PI * .5, .02, .03, 100, 0, 1).start();
new WaveUpdateThread(wave2, Math.PI, .02, .03, 30, 0, 2).start();
new WaveUpdateThread(wave3, -Math.PI, .02, .05, 50, 0, .5).start();
//=================================
// draw waves in canvas
//=================================
new WaveRenderThread(Vector.<Wave>([wave3, wave1, wave2]), canvas, canvas2).start();
};
private function getGradMatrix(length : int, angle : Number) : Matrix
{
var gradMatrix : Matrix = new Matrix();
gradMatrix.createGradientBox(length, length, angle, 0, 0);
return gradMatrix;
}
private function getGradMatrix2(length : int, angle : Number) : Matrix
{
var gradMatrix : Matrix = new Matrix();
gradMatrix.createGradientBox(length, length, angle, 0, -length);
return gradMatrix;
}
}
}
class WaveType
{
public static const SIN:String = "SIN";
public static const COS:String = "COS";
}
import flash.display.IGraphicsFill;
import flash.display.GraphicsPathCommand;
import flash.display.GraphicsPath;
import flash.display.GraphicsStroke;
import flash.display.IGraphicsData;
import flash.display.Graphics;
import flash.display.Shape;
class Wave extends Shape
{
public var curveWidth:Number;
public var curveHeight:Number;
public var opposite:Boolean = false;
private var stroke:GraphicsStroke;
private var canvasWidth:Number;
private var fill:IGraphicsFill;
private var canvasHeight:int;
private var curve:Function;
/**
* @param canvasWidth キャンバスの横幅
* @param canvasHeight キャンバスの縦幅
* @param stroke 波のスタイル（ストローク）
* @param fill 波のスタイル（塗り）
* @param curveWidth 波の最大幅
* @param curveHeight 波の最大高
* @param type 波のタイプ（WaveType.SIN or WaveType.COS）
*/
public function Wave(
canvasWidth:int,
canvasHeight:int,
stroke:GraphicsStroke,
fill:IGraphicsFill,
curveWidth:Number,
curveHeight:Number,
type:String = WaveType.SIN
)
{
this.stroke = stroke;
this.fill = fill;
this.canvasWidth = canvasWidth;
this.canvasHeight = canvasHeight;
this.curveWidth = curveWidth;
this.curveHeight = curveHeight;
this.curve = (type == WaveType.COS) ? Math.cos : Math.sin;
}
public function draw(seed:Number, sx:Number, sy:Number):void
{
//波の縦サイズ(-curveHeight ~ +curveHeight)
var waveHeight:Number = Math.sin(seed) * curveHeight;
var g:Graphics = graphics;
g.clear();
g.drawGraphicsData(Vector.<IGraphicsData>([ stroke, fill, getPath(sx, sy, curveWidth, waveHeight, seed) ]));
}
/**
* @param px 描画のスタート位置
* @param py 描画のスタート位置
* @param w 波の最大横幅
* @param h 波の最大縦幅
* @param seed 上下の触れ幅（-Math.PI ~ Math.PI）
*/
private function getPath(px:Number, py:Number, w:Number, h:Number, seed:Number):GraphicsPath
{
if (w <= 0) throw new Error("サイズが負の数値です");
var path:GraphicsPath = new GraphicsPath();
path.commands = Vector.<int>([ GraphicsPathCommand.MOVE_TO ]);
path.data = Vector.<Number>([ px, py += Math.sin(seed) * h * .5 ]);
//波一つ分をどのくらいの精度で描画するか（数値が大きいほど解像度が高い）
var resolution:int = 30;
var step:Number = 1 / resolution;
var stepRad:Number = Math.PI * 2 / resolution;
h *= .5;
while(px < canvasWidth)
{
seed += stepRad;
px += w * step;
py += curve(seed) * h * stepRad;
path.commands.push(GraphicsPathCommand.LINE_TO);
path.data.push(px, py);
}
path.commands.push(GraphicsPathCommand.LINE_TO);
path.data.push(px, py += (opposite) ? -canvasHeight : canvasHeight);
path.commands.push(GraphicsPathCommand.LINE_TO);
path.data.push(0, py);
return path;
}
}
import fl.motion.easing.Quadratic;
import org.libspark.thread.Thread;
class WaveUpdateThread extends Thread
{
private var wave:Wave;
private var time:Number = 0;
private var seed:Number;
private var easings:Array = [ Quadratic.easeOut, Quadratic.easeIn ];
private var easing:Function = easings[0];
private var step:Number;
private var direction:int = 1;
private var begin:Number;
private var end:Number;
private var speedH:Number;
private var stX:Number = 0;
/**
* @param wave ターゲットになるウェーブ
* @param seed ウェーブの初期値（-Math.PI ~ Math.PI）
* @param minSpeed 縦揺れの最低スピード
* @param maxSpeed 縦揺れの最高スピード
* @param duration 縦揺れのスピードが変化する時間
* @param time 縦揺れスピードの初期値（0 ~ 1）
* @param speedH 横移動のスピード
*/
public function WaveUpdateThread(
wave:Wave,
seed:Number = NaN,
minSpeed:Number = .01,
maxSpeed:Number = .03,
duration:int = 300,
time:Number = NaN,
speedH:Number = 1
)
{
super();
this.wave = wave;
this.begin = minSpeed;
this.end = maxSpeed - minSpeed;
this.seed = isNaN(seed) ? Math.random() * Math.PI * 2 - Math.PI : seed;
this.time = isNaN(time) ? Math.random() : time;
this.step = 1 / duration;
this.speedH = speedH;
}
override protected function run():void
{
next(run);
time += step * direction;
seed += easing(time, begin, end, 1);
if (time > 1)
{
time = 1;
direction *= -1;
easing = easings[1];
}
else if(time < 0)
{
time = 0;
direction *= -1;
easing = easings[1];
}
//スタートの描画位置(x=0, y=+-10)
stX -= speedH % wave.curveWidth;
var sx:Number = stX;
var sy:Number = Math.cos(seed) * 10;
wave.draw(seed, sx, sy);
}
}
import flash.geom.Rectangle;
import flash.filters.BlurFilter;
import flash.geom.Point;
import flash.geom.ColorTransform;
import flash.display.BitmapData;
class WaveRenderThread extends Thread
{
private static const POINT:Point = new Point();
private var waves:Vector.<Wave>;
private var canvas:BitmapData;
private var delay:BitmapData;
private var transparent:ColorTransform;
private var histroy:Vector.<BitmapData> = new Vector.<BitmapData>();
private var blur:BlurFilter = new BlurFilter(2, 2);
private var clear:BitmapData;
private var rect:Rectangle;
public function WaveRenderThread(waves:Vector.<Wave>, canvas:BitmapData, delay:BitmapData)
{
super();
this.waves = waves;
this.canvas = canvas;
this.delay = delay;
rect = canvas.rect;
clear = new BitmapData(canvas.width, canvas.height, true, 0x00FFFFFF);
transparent = new ColorTransform(1, 1, 1, .5, 0, 0, 0, 0);
histroy.push(canvas.clone());
}
override protected function run():void
{
next(run);
canvas.lock();
canvas.copyPixels(clear, rect, POINT);
waves.forEach(function(wave:Wave, ...param):void
{
canvas.draw(wave, wave.transform.matrix, transparent);
});
canvas.unlock();
delay.lock();
delay.copyPixels(clear, rect, POINT);
delay.draw(histroy[0]);
delay.unlock();
if (histroy.length > 5) histroy.shift().dispose();
var b:BitmapData = canvas.clone();
b.applyFilter(b, b.rect, POINT, blur);
histroy.push(b);
}
}