Pass arbitrary mesh file (.h5m, .vtk) to MCNP's source.F90

[erelson]

Need inspiration for the best way to do this in Fortran+MCNP.

[erelson]

The current approach is that source.h5m is the hardcoded file that is looked for.

The most practical way to stay within source.F90 is to add a (partial) parser for the r2s.cfg files. This would also be the solution for optional parameters, a la #45. This is probably a task for post-thesis/summer work, though.

[gonuke]

You could hack the MCNP command line file reading stuff to optionally provide another filename on the command line. We do it for gcad, lcad, fcad...

[erelson]

I had been approaching this with the goal of keeping the portability of (and ability to quickly swap out) source.F90 files in mind. I will look into it at some point, though.