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*/