/// <summary>
/// Vector that is normal to the line connecting the defining points.
/// </summary>
/// <returns></returns>
public Vector NormalVector()
{
return(GL.NormalVector(I, J));
}
/// <summary>
/// Vector that is tangential to the line connecting the defining points.
/// </summary>
/// <returns></returns>
public Vector TangentVector()
{
return(GL.TangentVector(I, J));
}
