Implement cubic cells and improve the InterpolationDerives test
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
This is a major feature request for the implementation of cubic cells in VTK. The sources of the new cubic cells and a patch to integrate them into VTK are attached.
Additionally TestInterpolationDerivs
has been improved to find incorrect derivatives computation
by using numerical differentiation.
If something is missing please let me know.