Actual source code: plexcgns.c
1: #define PETSCDM_DLL
2: #include <petsc/private/dmpleximpl.h>
4: /*@C
5: DMPlexCreateCGNS - Create a `DMPLEX` mesh from a CGNS file.
7: Collective
9: Input Parameters:
10: + comm - The MPI communicator
11: . filename - The name of the CGNS file
12: - interpolate - Create faces and edges in the mesh
14: Output Parameter:
15: . dm - The `DM` object representing the mesh
17: Level: beginner
19: Note:
20: https://cgns.github.io
22: .seealso: [](chapter_unstructured), `DM`, `DMPLEX`, `DMPlexCreate()`, `DMPlexCreateCGNS()`, `DMPlexCreateExodus()`
23: @*/
24: PetscErrorCode DMPlexCreateCGNSFromFile(MPI_Comm comm, const char filename[], PetscBool interpolate, DM *dm)
25: {
27: #if defined(PETSC_HAVE_CGNS)
28: DMPlexCreateCGNSFromFile_Internal(comm, filename, interpolate, dm);
29: #else
30: SETERRQ(comm, PETSC_ERR_SUP, "Loading meshes requires CGNS support. Reconfigure using --with-cgns-dir");
31: #endif
32: return 0;
33: }
35: /*@
36: DMPlexCreateCGNS - Create a `DMPLEX` mesh from a CGNS file ID.
38: Collective
40: Input Parameters:
41: + comm - The MPI communicator
42: . cgid - The CG id associated with a file and obtained using cg_open
43: - interpolate - Create faces and edges in the mesh
45: Output Parameter:
46: . dm - The `DM` object representing the mesh
48: Level: beginner
50: Note:
51: https://cgns.github.io
53: .seealso: [](chapter_unstructured), `DM`, `DMPLEX`, `DMPlexCreate()`, `DMPlexCreateExodus()`
54: @*/
55: PetscErrorCode DMPlexCreateCGNS(MPI_Comm comm, PetscInt cgid, PetscBool interpolate, DM *dm)
56: {
57: #if defined(PETSC_HAVE_CGNS)
58: DMPlexCreateCGNS_Internal(comm, cgid, interpolate, dm);
59: #else
60: SETERRQ(comm, PETSC_ERR_SUP, "Loading meshes requires CGNS support. Reconfigure using --download-cgns");
61: #endif
62: return 0;
63: }