public void xRad(double s, ref Vect2 uv, ref Vect3 xyz, ref double k)
{
Vect3 dx = new Vect3(), ddx = new Vect3();
xCvt(s, ref uv, ref xyz, ref dx, ref ddx);
Vect3 cross = dx.Cross(ddx);
k = cross.Magnitude / Math.Pow(dx.Magnitude, 3);
}
public void xNor(Vect2 uv, ref Vect3 xyz, ref Vect3 xnor)
{
Vect3 dxu = new Vect3(), dxv = new Vect3();
xVec(uv, ref xyz, ref dxu, ref dxv);
xnor = dxu.Cross(dxv);
xnor.Magnitude = 1;
//BLAS.unitize(ref xnor);
}
public void xNor(double s, ref Vect2 uv, ref Vect3 xyz, ref Vect3 dx, ref Vect3 xn)
{
xVec(s, ref uv, ref xyz, ref dx);
Vect3 xNor = new Vect3();
Surface.xNor(uv, ref xyz, ref xNor);
xn = dx.Cross(xNor);
xn.Magnitude = 1;//unitize
}
