簡単な歯車

微妙にタイミングが・・・

by 178ep3 28 May 2009

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歯車
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/**
 * Copyright 178ep3 ( http://wonderfl.net/user/178ep3 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/8rC5
 */

//微妙にタイミングが・・・

package {
    import flash.display.Sprite;
    import flash.display.Shape;
    import flash.geom.Point;
    import flash.events.Event;

    public class Gear extends Sprite
    {
       private var s:Shape;
       private var s2:Shape;
       private var s3:Shape;

        public function Gear()
        {
            s = addChild(new Shape()) as Shape;
            s.x = stage.stageWidth/2;
            s.y = stage.stageHeight/2;
            s.graphics.beginFill(0xff0000,0.6);
            DrawGear(s,1,0x00,72,150,140);

            s2 = addChild(new Shape()) as Shape;
            s2.x = stage.stageWidth/2+180;
            s2.y = stage.stageHeight/2+120;
            s2.graphics.beginFill(0x00ff00,0.6);
            DrawGear(s2,1,0x00,32,75,65);

            s3 = addChild(new Shape()) as Shape;
            s3.x = -23;
            s3.y = -127;
            s3.graphics.beginFill(0x0000ff,0.6);
            DrawGear(s3,1,0x00,144,300,285);

            addEventListener(Event.ENTER_FRAME,loop);
        }

        private function DrawGear(shape:*,linePoint:uint,lineColor:uint,gear:uint,R:Number,r:Number):void
		{
                        shape.graphics.lineStyle(linePoint,lineColor);
			var angle:Number = 90/gear * Math.PI/180;
			var fp:Point = Point.polar(R,angle*0);
			
			shape.graphics.moveTo(fp.x,fp.y);
			for(var i:uint=0; i<4*gear; i+=4)
			{
				var _0p:Point = Point.polar(R,angle*i);
				var _1p:Point = Point.polar(R,angle*(i+1));
				var _2p:Point = Point.polar(r,angle*(i+2));
				var _3p:Point = Point.polar(r,angle*(i+3));
				shape.graphics.lineTo(_0p.x,_0p.y);
				shape.graphics.lineTo(_1p.x,_1p.y);
				shape.graphics.lineTo(_2p.x,_2p.y);
				shape.graphics.lineTo(_3p.x,_3p.y);
			}
			shape.graphics.lineTo(fp.x,fp.y);
			shape.graphics.endFill();
		}

        private function loop(e:Event):void
        {
          s.rotation += 0.5;
          s2.rotation -= 1.125;
          s3.rotation -= 0.25;
        }
    }
}