.getWidth() * .5, this.getY() + this.getHeight() * .5);
    }
    
    public function getWidth():Number {
        return this.$width;
    }
    
    public function setWidth(width:Number):Void {
        this.$width = width;
    }
    
    public function getHeight():Number {
        return this.$height;
    }
    
    public function setHeight(height:Number):Void {
        this.$height = height;
    }
    
    public function getPerimeter():Number {
        return null;
    }
    
    public function getAr