import java.util.LinkedList;
import java.util.List;

public class Ps3Vertex extends Ps2Vertex implements XYLocation 
{
  double x;
  double y;

  Ps3Vertex (String vertexname) { super(vertexname); x=0.0; y=0.0; }
  Ps3Vertex (String vertexname, double x, double y) { super(vertexname); this.x=x; this.y=y; }
  public double getXlocation () { return x; }
  public double getYlocation () { return y; }  
  public void setXlocation (double x) { this.x=x; }
  public void setYlocation (double y) { this.y=y; }  
}