forked from: WaveSilk
matacatさん有難うございます。現在CS5にて改造しつつ、このコードの勉強をしています。
※ CS5では「onMouseDown」とかの「on～」は使えません。
/**
* Copyright tsu_droid ( http://wonderfl.net/user/tsu_droid )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/sB6u
*/
// forked from matacat's WaveSilk
//
// matacatさん有難うございます。現在CS5にて改造しつつ、このコードの勉強をしています。
// ※ CS5では「onMouseDown」とかの「on～」は使えません。
//
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.BlendMode;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import frocessing.color.ColorHSV;
public class WaveSilkBasic extends Sprite
{
private const WIND_H:Number = 10;
private const WIND_V:Number = 10;//WIND_Hと同じ場合、Y=Xに沿って描画される
private const THICK:Number = 2;
private const INTER:int = 30;
private const ALPHA:Number = 0.05;
private const THIN:int = 1;// 色合いがなだらかになります
private var silk:BitmapData = new BitmapData(465, 465, false, 0x000000);
private var line:Shape = new Shape();
private var cmd:Vector.<int> = new Vector.<int>();
private var dat:Vector.<Number> = new Vector.<Number>();
private var pts:Vector.<Number> = new Vector.<Number>();
private var to:Vector.<Number> = new Vector.<Number>();
private var hsv:ColorHSV = new ColorHSV(0, 0.5, 1);
private var num:int;
private var cnt:int;
public function WaveSilkBasic()
{
addChild(new Bitmap(silk));
addChild(line);
stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
}
private function resetParams():void
{
removeEventListener(Event.ENTER_FRAME, onEnterFrame);
line.graphics.clear();
line.visible = true;
cmd.length = 0;
dat.length = 0;
pts.length = 0;
to.length = 0;
hsv.h = 360 * Math.random();
hsv.v = 1;
num = 2;
cnt = 0;
}
private function onMouseDown(e:MouseEvent):void
{
stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
resetParams();
pts[0] = e.stageX;
pts[1] = e.stageY;
cmd[0] = 1;
cmd[1] = 3;
line.graphics.lineStyle(THICK, hsv.value);
line.graphics.moveTo(e.stageX, e.stageY);
}
private function onMouseMove(e:MouseEvent):void
{
cnt = (cnt + 1) % THIN;
if (cnt == 0) {
pts[num++] = e.stageX;
pts[num++] = e.stageY;
cmd[num>>1] = 3;
line.graphics.lineTo(e.stageX, e.stageY);
}
}
private function onMouseUp(e:MouseEvent):void
{
stage.removeEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
stage.removeEventListener(MouseEvent.MOUSE_UP, onMouseUp);
line.visible = false;
if (num > 2) {
dat.length = to.length = (num << 1) + 2;
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
}
private function onEnterFrame(e:Event):void
{
silk.lock();
var tx:Number = pts[0];
var ty:Number = pts[1];
dat[0] = dat[2] = tx;
dat[1] = dat[3] = ty;
to[0] = to[2] = tx + Math.random() * WIND_H;
to[1] = to[3] = ty + Math.random() * WIND_V;
pts[0] = to[0];
pts[1] = to[1];
var i:int, j:int, k:int;
for (i = 2; i < num; i += 2) {
j = (i << 1) + 2;
tx = pts[i];
ty = pts[i+1>>0];
dat[j] = tx;
dat[j+1>>0] = ty;
to[j] = tx + Math.random() * WIND_H;
to[j+1>>0] = ty + Math.random() * WIND_V;
dat[j-2>>0] = (tx + dat[j-4>>0]) / 2;
dat[j-1>>0] = (ty + dat[j-3>>0]) / 2;
tx = to[j];
ty = to[j+1>>0];
to[j-2>>0] = (tx + to[j-4>>0]) / 2;
to[j-1>>0] = (ty + to[j-3>>0]) / 2;
pts[i] = tx;
pts[i+1>>0] = ty;
}
k = dat.length;
dat[k-2>>0] = dat[k-4>>0];
dat[k-1>>0] = dat[k-3>>0];
to[k-2>>0] = to[k-4>>0];
to[k-1>>0] = to[k-3>>0];
for (i = 0; i < INTER; i++) {
line.graphics.clear();
line.graphics.lineStyle(THICK, hsv.value, ALPHA);
line.graphics.drawPath(cmd, dat);
silk.draw(line, null, null, BlendMode.ADD);
for (j = 0; j < k; j++) {
dat[j] = dat[j] + (to[j] - dat[j]) / (INTER - i);
}
hsv.h += 0.5;
}
hsv.v -= 0.02;
if (hsv.v <= 0) {
removeEventListener(Event.ENTER_FRAME, onEnterFrame);
}
silk.unlock();
}
}
}