Hello,

I think I understood how a prism with cubic_spline works: The first and last
point are controls points, and the second and second from last points needs to
be identical (P1 = P1), such as:

prism{cubic_spline 0, 1, 7, P0, P1, P2, P3, P4, P1, P5}

using the points P0 ... P5 I calculate in a loop using #declare ...
which, however, results in "Too few points in a prism"

If I substitute the point P1 as follows:

prism{cubic_spline 0, 1, 7, P0, <1,1>, P2, P3, P4, <1,1>, P5}

it works. has POV-Ray a problem with using predefined points instead of using
the
numerical value in the prism statement?

Thank you!

Post a reply to this message