class TPoint
{
	var x,y:Number;
	function TPoint(x1,y1:Number){
		x = x1;
		y = y1;
	}
	public static function dist(a,b:TPoint){
		return(Math.sqrt( Math.pow(a.x-b.x,2)+Math.pow(a.y-b.y,2) ));
	}
	
	//判断点a是否在以bc为对角线的矩形内
	public function isinrec(b,c:TPoint){
		var i:Number;
		if ( ( (this.x-b.x)*(this.x-c.x)<0 ) && ( (this.y-b.y)*(this.y-c.y)<0 ) ){
			return(true);
		}else{
			return(false);
		}
	}
	public function output(){
		trace(x+" , "+y);
	}
	public function equalto(a:TPoint){
		if ((x - a.x== 0) && (y - a.y == 0)){
			return true;
		}else{
			return false;
		}
	}
}