/// <summary>
/// Create a new vector with given coordinates
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="z"></param>
public Vec3d(Vec4d vec)
{
this.X = vec.X;
this.Y = vec.Y;
this.Z = vec.Z;
}
public void Cross(Vec4d a, Vec4d b)
{
X = a.Y * b.Z - a.Z * b.Y;
Y = a.Z * b.X - a.X * b.Z;
Z = a.X * b.Y - a.Y * b.X;
}
