flash on 2015-11-13

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/6OY6
 */

package {
    import flash.text.TextField;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        public function FlashTest() {
            
            deb = new TextField();
            deb.width=320;deb.height=240;
            deb.mouseEnabled=false;
            addChild(deb);
            
            var px:Number; var py:Number;
            var ax:Number; var ay:Number;
            var ta:Number;
            
            ax =230;ay=230;
            
            graphics.lineStyle(2,0);
            graphics.drawCircle(ax,ay, 8);

            var ta0:Number;
            

            var i:int;
            for (i=0;i<16;i+=1)
            { 
                px = ax; py = ay;
                
                ax+=8; 
                ay+=i*1;
                //ay+=4;
                
                ta = Math.atan2(py-ay, px-ax);
                deb.appendText("\n"+ta);
     
                 if (i==0) {ta0 =ta;}
     
                graphics.drawCircle(ax,ay, 8);
            }//nexti
            
            deb.text = ""+ta0 + "\n" + ta + "\n"+angDiff(ta0,ta);
            
        }//ctor
        
        public var deb:TextField;
       
        public static function angDiff(a:Number, b:Number):Number
        { a -= b;      if (a > 3.14) { a -= 6.28; }      if (a < -3.14) { a += 6.28;}      return a;    }//angdiff

    }//classend
}