1: static char help[] = "Evaluate the shape quality of a mesh\n\n";

  3: #include <petscdmplex.h>

  5: typedef struct {
  6:   PetscBool report;         /* Print a quality report */
  7:   PetscReal condLimit, tol; /* Condition number limit for cell output */
  8: } AppCtx;

 10: static PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options)
 11: {
 12:   PetscFunctionBeginUser;
 13:   options->report    = PETSC_FALSE;
 14:   options->tol       = 0.5;
 15:   options->condLimit = PETSC_DETERMINE;

 17:   PetscOptionsBegin(comm, "", "Mesh Quality Evaluation Options", "DMPLEX");
 18:   PetscCall(PetscOptionsBool("-report", "Output a mesh quality report", "ex9.c", options->report, &options->report, NULL));
 19:   PetscCall(PetscOptionsReal("-cond_limit", "Condition number limit for cell output", "ex9.c", options->condLimit, &options->condLimit, NULL));
 20:   PetscCall(PetscOptionsReal("-orth_qual_atol", "Absolute tolerance for Orthogonal Quality", "ex9.c", options->tol, &options->tol, NULL));
 21:   PetscOptionsEnd();
 22:   PetscFunctionReturn(PETSC_SUCCESS);
 23: }

 25: static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
 26: {
 27:   PetscFunctionBeginUser;
 28:   PetscCall(DMCreate(comm, dm));
 29:   PetscCall(DMSetType(*dm, DMPLEX));
 30:   PetscCall(DMSetFromOptions(*dm));
 31:   PetscCall(DMViewFromOptions(*dm, NULL, "-dm_view"));
 32:   PetscFunctionReturn(PETSC_SUCCESS);
 33: }

 35: int main(int argc, char **argv)
 36: {
 37:   DM      dm;
 38:   DMLabel OQLabel;
 39:   Vec     OQ;
 40:   AppCtx  ctx;

 42:   PetscFunctionBeginUser;
 43:   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
 44:   PetscCall(ProcessOptions(PETSC_COMM_WORLD, &ctx));
 45:   PetscCall(CreateMesh(PETSC_COMM_WORLD, &ctx, &dm));
 46:   PetscCall(DMGetCoordinatesLocalSetUp(dm));
 47:   PetscCall(DMPlexCheckCellShape(dm, ctx.report, ctx.condLimit));
 48:   PetscCall(DMPlexComputeOrthogonalQuality(dm, NULL, ctx.tol, &OQ, &OQLabel));
 49:   PetscCall(VecDestroy(&OQ));
 50:   PetscCall(DMDestroy(&dm));
 51:   PetscCall(PetscFinalize());
 52:   return 0;
 53: }

 55: /*TEST

 57:   test:
 58:     suffix: 0
 59:     requires: exodusii
 60:     nsize: {{1 2}}
 61:     args: -petscpartitioner_type simple -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/blockcylinder-50.exo -report

 63:   test:
 64:     suffix: 1
 65:     args: -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/square.msh -report

 67:   testset:
 68:     args: -dm_plex_orthogonal_quality_label_view -dm_plex_orthogonal_quality_vec_view

 70:     test:
 71:       suffix: box_1
 72:       nsize: 1
 73:       args: -dm_plex_simplex 0 -dm_plex_box_faces 2,2 -orth_qual_atol 1.0

 75:     test:
 76:       suffix: box_2
 77:       nsize: 2
 78:       args: -petscpartitioner_type simple -dm_plex_simplex 0 -dm_plex_box_faces 2,2 -orth_qual_atol 1.0

 80:     test:
 81:       suffix: mesh_1
 82:       nsize: 1
 83:       requires: exodusii
 84:       args: -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/sevenside-quad-15.exo -orth_qual_atol 0.95

 86:     test:
 87:       suffix: mesh_2
 88:       nsize: 2
 89:       requires: exodusii
 90:       args: -petscpartitioner_type simple -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/sevenside-quad-15.exo -orth_qual_atol 0.95
 91: TEST*/