import java.awt.*;

public class Polys{

	//
	// rot
	//
	public static Polygon rotoff(Polygon pl, Point o, Point prevV, Point nextV){
		Polygon re = new Polygon();
		for(int i=0;i<pl.npoints;i++){
			Pts.add(re, Pts.rotoff(Pts.p(pl,i), o, prevV, nextV));
		}
		return re;
	}
	public static Polygon rot(Polygon pl, Point prevV, Point nextV){
		return rotoff(pl, new Point(0,0), prevV, nextV);
	}
}

// EOF