Hi, I'm just wondering if it is possible to generate a simple unstructured mesh in 2D with DMPlex and one of the external generators, like triangle?
I'm running snes/tutorials/ex20 which uses triangle and I can only seem to generate structured triangular meshes. It is a simple 2D box so it makes sense a Delaunay might output a structured mesh in that case. I know I could get the DM to read in an unstructured mesh from a file that I have previously generated, but for ease I'm wondering if this can be done directly. I've tried a few different things to try and force an unstructured mesh being generated, like changing the number of faces to 1 (-dm_plex_box_faces 1,1) so it only sees the corners of the box domain. I've also tried to set some of the options to triangle with DMPlexTriangleSetOptions but that doesn't seem to have any effect, so I'm guessing I'm potentially not using it correctly (and I can't seem to find any examples that use this function to help). Anyone have any suggestions? Thanks for your help Steven
