public Polygon Normalize(double k)
{
for (int i = 0; i < Vertex.Length; i++)
{
Vertex[i] = new PPoint(Vertex[i].X / k, Vertex[i].Y / k, Vertex[i].Z / k);
}
return(this);
}
public Vector(PPoint p) : base(p.X, p.Y, p.Z)
{
W = 1;
}