Actual source code: ex9.c
petsc-3.15.0 2021-03-30
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      1: static char help[] = "Evaluate the shape quality of a mesh\n\n";

      3: #include <petscdmplex.h>

      5: typedef struct {
      6:   char      filename[PETSC_MAX_PATH_LEN]; /* Import mesh from file */
      7:   PetscBool report;                       /* Print a quality report */
      8:   PetscReal condLimit, tol;               /* Condition number limit for cell output */
      9: } AppCtx;

     11: static PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options)
     12: {

     16:   options->filename[0] = '\0';
     17:   options->report      = PETSC_FALSE;
     18:   options->tol         = 0.5;
     19:   options->condLimit   = PETSC_DETERMINE;

     21:   PetscOptionsBegin(comm, "", "Mesh Quality Evaluation Options", "DMPLEX");
     22:   PetscOptionsString("-filename", "The mesh file", "ex9.c", options->filename, options->filename, sizeof(options->filename), NULL);
     23:   PetscOptionsBool("-report", "Output a mesh quality report", "ex9.c", options->report, &options->report, NULL);
     24:   PetscOptionsReal("-cond_limit", "Condition number limit for cell output", "ex9.c", options->condLimit, &options->condLimit, NULL);
     25:   PetscOptionsReal("-orth_qual_atol", "Absolute tolerance for Orthogonal Quality", "ex9.c", options->tol, &options->tol, NULL);
     26:   PetscOptionsEnd();
     27:   return(0);
     28: }

     30: static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
     31: {
     32:   PetscErrorCode  ierr;

     35:   if (user->filename[0]) {DMPlexCreateFromFile(comm, user->filename, PETSC_TRUE, dm);}
     36:   else                   {DMPlexCreateBoxMesh(comm, 2, PETSC_TRUE, NULL, NULL, NULL, NULL, PETSC_TRUE, dm);}
     37:   PetscObjectSetName((PetscObject) *dm, "Mesh");
     38:   DMSetFromOptions(*dm);
     39:   DMViewFromOptions(*dm, NULL, "-dm_view");
     40:   return(0);
     41: }

     43: int main(int argc, char **argv)
     44: {
     45:   DM             dm;
     46:   DMLabel        OQLabel;
     47:   Vec            OQ;
     48:   AppCtx         ctx;

     51:   PetscInitialize(&argc, &argv, NULL,help);if (ierr) return ierr;
     52:   ProcessOptions(PETSC_COMM_WORLD, &ctx);
     53:   CreateMesh(PETSC_COMM_WORLD, &ctx, &dm);
     54:   DMPlexCheckCellShape(dm, ctx.report, ctx.condLimit);
     55:   DMPlexComputeOrthogonalQuality(dm, NULL, ctx.tol, &OQ, &OQLabel);
     56:   VecDestroy(&OQ);
     57:   DMDestroy(&dm);
     58:   PetscFinalize();
     59:   return ierr;
     60: }

     62: /*TEST

     64:   test:
     65:     suffix: 0
     66:     requires: exodusii
     67:     nsize: {{1 2}}
     68:     args: -dm_distribute -petscpartitioner_type simple -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/blockcylinder-50.exo -report

     70:   test:
     71:     suffix: 1
     72:     args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/square.msh -report

     74:   testset:
     75:     requires: exodusii
     76:     args: -dm_plex_orthogonal_quality_label_view -dm_plex_orthogonal_quality_vec_view

     78:     test:
     79:       suffix: box_1
     80:       nsize: 1
     81:       args: -dm_plex_box_simplex 0 -dm_plex_box_faces 2,2 -orth_qual_atol 1.0

     83:     test:
     84:       suffix: box_2
     85:       nsize: 2
     86:       args: -dm_distribute -petscpartitioner_type simple -dm_plex_box_simplex 0 -dm_plex_box_faces 2,2 -orth_qual_atol 1.0

     88:     test:
     89:       suffix: mesh_1
     90:       nsize: 1
     91:       args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/sevenside-quad-15.exo -orth_qual_atol 0.95

     93:     test:
     94:       suffix: mesh_2
     95:       nsize: 2
     96:       args: -dm_distribute -petscpartitioner_type simple -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/sevenside-quad-15.exo -orth_qual_atol 0.95
     97: TEST*/