flash on 2009-4-30 楕円形

添削ありがとうございます！できた！

by ahchang 01 May 2009

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1日1Wonderfl
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/**
* 添削ありがとうございます！できた！
**/

package {

    import flash.display.Sprite;
    import flash.display.DisplayObjectContainer;
    import flash.display.Graphics;
    
    [SWF(width=465, height=465, frameRate=30, backgroundColor=0x000000)]
    
    public class NestEllipse extends Sprite {
        
        //private var container:DisplayObjectContainer;
        private var cx:uint;
        private var cy:uint;
               
        public function NestEllipse() {
        
            //cx = container.stage.stageWidth/2;
            //cy = container.stage.stageHeight/2;
            cx = stage.stageWidth/2;
            cy = stage.stageHeight/2;
            drawRing();
        }
        
        private function drawRing():void {
            
            var thickness:uint = 1;
            var color:uint;
            var alpha:Number;
            var ew:uint;
            var eh:uint;
            var i:uint;
            var j:uint;
            
            
            for (i=1; i<=50; i++) {
                
                alpha = 1 - 0.02*i;
                ew = 12*i;
                color = Math.random()*0xff0000;
                
                for (j=1; j<=6; j++) {
                    eh = ew/2;
                    
                    var canvas:Sprite = new Sprite();

                    canvas.graphics.lineStyle(thickness, color, alpha);
                    canvas.graphics.drawEllipse(-ew/2, -eh/2, ew, eh);
                    
                    canvas.x = cx;
                    canvas.y = cy;
                    canvas.rotation = 30*(j-1);
                    
                    addChild( canvas );
                 }
                 
             }
             
         }
         
     }
     
}