package
{
 import flash.display.Sprite;
 
 public class animation_ch03_Distance extends Sprite {
  
  public function animation_ch03_Distance() {
   init();
  }
//@ init(s)
  private function init():void {
   var sprite1:Sprite = new Sprite();
   addChild(sprite1);
   sprite1.graphics.beginFill(0x000000);
   sprite1.graphics.drawRect(-2, -2, 4, 4);
   sprite1.graphics.endFill();
   sprite1.x = Math.random() * stage.stageWidth;
   sprite1.y = Math.random() * stage.stageHeight;
   
   var sprite2:Sprite = new Sprite();
   addChild(sprite2);
   sprite2.graphics.beginFill(0xff0000);
   sprite2.graphics.drawRect(-2, -2, 4, 4);
   sprite2.graphics.endFill();
   sprite2.x = Math.random() * stage.stageWidth;
   sprite2.y = Math.random() * stage.stageHeight;
   
   var dx:Number = sprite1.x - sprite2.x;
   var dy:Number = sprite1.y - sprite2.y;
   var dist:Number = Math.sqrt(dx * dx + dy * dy);
   trace(dist);
  }
 }
}