Actual source code: ex14.c
1: static char help[] = "Tests for coarsening\n\n";
3: #include <petscdmplex.h>
5: typedef struct {
6: PetscBool uninterpolate; /* Uninterpolate the mesh at the end */
7: } AppCtx;
9: PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options)
10: {
11: PetscFunctionBegin;
12: options->uninterpolate = PETSC_FALSE;
14: PetscOptionsBegin(comm, "", "Meshing Problem Options", "DMPLEX");
15: PetscCall(PetscOptionsBool("-uninterpolate", "Uninterpolate the mesh at the end", "ex14.c", options->uninterpolate, &options->uninterpolate, NULL));
16: PetscOptionsEnd();
17: PetscFunctionReturn(PETSC_SUCCESS);
18: }
20: PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
21: {
22: PetscFunctionBegin;
23: PetscCall(DMCreate(comm, dm));
24: PetscCall(DMSetType(*dm, DMPLEX));
25: PetscCall(DMSetFromOptions(*dm));
26: PetscCall(DMViewFromOptions(*dm, NULL, "-orig_dm_view"));
27: if (user->uninterpolate) {
28: DM udm = NULL;
30: PetscCall(DMPlexUninterpolate(*dm, &udm));
31: PetscCall(DMDestroy(dm));
32: *dm = udm;
33: PetscCall(DMViewFromOptions(*dm, NULL, "-un_dm_view"));
34: }
35: PetscCall(DMViewFromOptions(*dm, NULL, "-dm_view"));
36: PetscFunctionReturn(PETSC_SUCCESS);
37: }
39: int main(int argc, char **argv)
40: {
41: DM dm;
42: AppCtx user;
44: PetscFunctionBeginUser;
45: PetscCall(PetscInitialize(&argc, &argv, NULL, help));
46: PetscCall(ProcessOptions(PETSC_COMM_WORLD, &user));
47: PetscCall(CreateMesh(PETSC_COMM_WORLD, &user, &dm));
48: PetscCall(DMDestroy(&dm));
49: PetscCall(PetscFinalize());
50: return 0;
51: }
53: /*TEST
54: test:
55: suffix: 0
56: requires: triangle
57: args: -dm_view -dm_refine 1 -dm_coarsen -dm_plex_check_symmetry -dm_plex_check_skeleton -dm_plex_check_faces
59: TEST*/