package graphics;

public class CurvedTriangle extends Shape
{
  protected Spline spline;

  public CurvedTriangle(Spline s)
  {
    super(20, 20);
    spline = s;
    wrap = false;
  }

  public CurvedTriangle(int newM, int newN, Spline s)
  {
    super(newM, newN);
    spline = s;
    wrap = false;
  }

  //convert u/v pair to xyz point
  protected double[] calculatePoint(double u, double v)
  {
    //point-normal pair
    double[] vertex = {0,0,0, 0,0,0};

    vertex[0] = v * (2*u - 1); //x
    vertex[1] = v * spline.get(u); //y
    vertex[2] = 0; //z

    return vertex;
  }

  //gotta overwrite this b/c of casting issues :-/
  public Object clone()
  {
    CurvedTriangle newDisk = new CurvedTriangle(M, N, spline);

    for (int i=0; i<vertices.length; i++)
      newDisk.setVertex(i, vertices[i]);

    for (int i=0; i<faces.length; i++)
      newDisk.setFace(i, faces[i]);

    return newDisk;
  }
}