star!!!

＃このつぶやき(https://twitter.com/neconi/status/14502827848)から夜中に酒を片手に作り始めたやつを仕上げたのでアップした
　＃星モチーフでかわいい何かを作りたかったのに、気がついたらなんかサイケになってた・・

by neconi 25 May 2010

• Related works: 2

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Bitmap star
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/**
 * Copyright neconi ( http://wonderfl.net/user/neconi )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/snTw
 */

//　＃このつぶやき(https://twitter.com/neconi/status/14502827848)から夜中に酒を片手に作り始めたやつを仕上げたのでアップした
//　＃星モチーフでかわいい何かを作りたかったのに、気がついたらなんかサイケになってた・・

package {
	import flash.display.Sprite;
	import flash.geom.Rectangle;
	//import net.hires.debug.Stats;
	
	[SWF(backgroundColor = "#000000", width = "465", height = "465", frameRate = "30")]
	
	public class Main extends Sprite {
		private var starTune:StarTune;
		public function Main() {
			init();
			//addChild(new Stats());
		}
		private function init():void {
			var rect:Rectangle = new Rectangle(0, 0, stage.stageWidth, stage.stageHeight);
			starTune = new StarTune(rect);
			addChild(starTune);
			starTune.play();
		}
	}
}

import flash.display.Sprite;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.filters.BlurFilter;

class StarTune extends Sprite {
	private var rect:Rectangle;
	private var canvas:BitmapData;
	private var temp:BitmapData;
	private static var scale:Number = 1.1;
	private var matrix:Matrix;
	private static var point:Point = new Point();
	private var blur:BlurFilter;
	private var star:StarMove;
	private var shade:BitmapData;
	public function StarTune(r:Rectangle) {
		rect = r;
		init();
	}
	private function init():void {
		canvas = new BitmapData(rect.width, rect.height, true, 0xFF000000);
		addChild(new Bitmap(canvas));
		temp = new BitmapData(rect.width, rect.height, false, 0xFF000000);
		blur = new BlurFilter(0.5, 0.5, 3);
		matrix = new Matrix();
		matrix.scale(scale, scale);
		var w:int = (rect.width - rect.width*scale) * 0.5;
		var h:int = (rect.height - rect.height * scale) * 0.5;
		matrix.translate(w, h);
		star = new StarMove();
		addChild(star);
		star.x = rect.width*0.5;
		star.y = rect.height*0.5;
		shade = new BitmapData(rect.width, rect.height, true, 0x10000000);
	}
	public function play():void {
		addEventListener(Event.ENTER_FRAME, draw, false, 0, true);
	}
	private function draw(evt:Event):void {
		star.create();
		temp.lock();
		temp.draw(this);
		temp.applyFilter(temp, rect, point, blur);
		temp.draw(shade);
		temp.unlock();
		canvas.lock();
		canvas.draw(temp, matrix, null, null, rect, true);
		canvas.unlock();
		star.move();
	}
}

import flash.display.Sprite;
import frocessing.color.ColorHSV;

class StarMove extends Sprite {
	private var length:uint;
	private var num:uint;
	private var stars:Array;
	private static var deceleration:Number = 0.2;
	private var id:uint;
	private var color:ColorHSV;

	public function StarMove() {
		init();
		//星の頂点の数を決める。奇数にする。５とか７とか。ここ変えるとイメージが変わるかも。
		//13にした時星の形が変な気がする・・なんでだろう・・？
		num = 5;
	}
	private function init():void {
		stars = new Array();
		color = new ColorHSV(0, 0.3, 1);
		id = 0;
		length = Math.random() * 60 + 40;
	}
	public function create():void {
		id ++;
		var angle:uint = id%360;
		color.h = angle;
		var star:Star = new Star(length, color.value, num);
		star.scale = Math.random() * 1.7 + 0.5;
		addChild(star);
		stars.push(star);
	}
	public function move():void {
		for (var i:uint = 0; i < stars.length; i++) {
			var star:Star = stars[i];
			star.scale *= deceleration;
			if (star.scale < 0.2) {
				stars.splice(i, 1);
				removeChild(star);
				star = null;
			}
		}
	}
}

import flash.display.Shape;
import flash.events.Event;

class Star extends Shape {
	private var length:uint;
	private var color:uint;
	private var num:uint;
	private var rad:uint;
	private var addRad:uint;
	private var targetRad:uint;
	private var _scale:Number = 1;
	public function Star(l:uint = 20, c:uint = 0xFFFFFF, n:uint = 5) {
		length = l;
		color = c;
		num = n;
		rad = 360 / num;
		addRad = (num - 1) / 2 * rad;
		targetRad = 0;
		draw();
	}
	private function draw():void {
		graphics.clear();
		graphics.lineStyle(Math.ceil(Math.random()*5), color);
		graphics.moveTo(length, 0);
		for (var i:uint = 0 ; i < num - 1 ; i++) {
			targetRad += addRad;
			graphics.lineTo(Math.cos(targetRad * Math.PI / 180) * length , Math.sin(targetRad * Math.PI / 180) * length);
		}
		graphics.lineTo(length, 0);
	}	
	public function get scale():Number {
		return _scale;
	}
	public function set scale(param:Number):void {
		_scale = param;
		scaleX = scaleY = _scale;
	}
}