Actual source code: ex37.c
1: static const char help[] = "Test of CAD functionality";
3: #include <petscdmplex.h>
5: /* TODO
6: - Fix IGES
7: - Test tessellation using -dm_plex_egads_with_tess
8: */
10: typedef struct {
11: char filename[PETSC_MAX_PATH_LEN];
12: PetscBool volumeMesh;
13: } AppCtx;
15: static PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options)
16: {
17: PetscFunctionBeginUser;
18: options->filename[0] = '\0';
19: options->volumeMesh = PETSC_TRUE;
21: PetscOptionsBegin(comm, "", "EGADSPlex Problem Options", "EGADSLite");
22: PetscCall(PetscOptionsString("-filename", "The CAD file", "ex37.c", options->filename, options->filename, sizeof(options->filename), NULL));
23: PetscCall(PetscOptionsBool("-volume_mesh", "Create a volume mesh", "ex37.c", options->volumeMesh, &options->volumeMesh, NULL));
24: PetscOptionsEnd();
25: PetscFunctionReturn(PETSC_SUCCESS);
26: }
28: static PetscErrorCode ComputeVolume(DM dm)
29: {
30: PetscObject obj = (PetscObject)dm;
31: DMLabel bodyLabel, faceLabel, edgeLabel;
32: double surface = 0., volume = 0., vol;
33: PetscInt dim, pStart, pEnd, p, pid;
34: const char *name;
36: PetscFunctionBeginUser;
37: PetscCall(DMGetDimension(dm, &dim));
38: if (dim < 2) PetscFunctionReturn(PETSC_SUCCESS);
39: PetscCall(DMGetLabel(dm, "EGADS Body ID", &bodyLabel));
40: PetscCall(DMGetLabel(dm, "EGADS Face ID", &faceLabel));
41: PetscCall(DMGetLabel(dm, "EGADS Edge ID", &edgeLabel));
43: PetscCall(DMPlexGetHeightStratum(dm, 0, &pStart, &pEnd));
44: for (p = pStart; p < pEnd; ++p) {
45: PetscCall(DMLabelGetValue(dim == 2 ? faceLabel : bodyLabel, p, &pid));
46: if (pid >= 0) {
47: PetscCall(DMPlexComputeCellGeometryFVM(dm, p, &vol, NULL, NULL));
48: volume += vol;
49: }
50: }
51: PetscCall(DMPlexGetHeightStratum(dm, 1, &pStart, &pEnd));
52: for (p = pStart; p < pEnd; ++p) {
53: PetscCall(DMLabelGetValue(dim == 2 ? edgeLabel : faceLabel, p, &pid));
54: if (pid >= 0) {
55: PetscCall(DMPlexComputeCellGeometryFVM(dm, p, &vol, NULL, NULL));
56: surface += vol;
57: }
58: }
60: PetscCall(PetscObjectGetName(obj, &name));
61: PetscCall(PetscPrintf(PetscObjectComm(obj), "DM %s: Surface Area = %.6e Volume = %.6e\n", name ? name : "", surface, volume));
62: PetscFunctionReturn(PETSC_SUCCESS);
63: }
65: int main(int argc, char *argv[])
66: {
67: DM surface, dm;
68: AppCtx ctx;
70: PetscFunctionBeginUser;
71: PetscCall(PetscInitialize(&argc, &argv, NULL, help));
72: PetscCall(ProcessOptions(PETSC_COMM_WORLD, &ctx));
73: PetscCall(DMPlexCreateFromFile(PETSC_COMM_WORLD, ctx.filename, "ex37_plex", PETSC_TRUE, &surface));
74: PetscCall(PetscObjectSetName((PetscObject)surface, "CAD Surface"));
75: PetscCall(PetscObjectSetOptionsPrefix((PetscObject)surface, "sur_"));
76: PetscCall(DMSetFromOptions(surface));
77: PetscCall(DMViewFromOptions(surface, NULL, "-dm_view"));
78: PetscCall(ComputeVolume(surface));
80: if (ctx.volumeMesh) {
81: PetscCall(DMPlexGenerate(surface, "tetgen", PETSC_TRUE, &dm));
82: PetscCall(PetscObjectSetName((PetscObject)dm, "CAD Mesh"));
83: PetscCall(DMPlexSetRefinementUniform(dm, PETSC_TRUE));
84: PetscCall(DMViewFromOptions(dm, NULL, "-pre_dm_view"));
86: PetscCall(DMPlexInflateToGeomModel(dm));
87: PetscCall(DMViewFromOptions(dm, NULL, "-inf_dm_view"));
89: PetscCall(DMSetFromOptions(dm));
90: PetscCall(DMViewFromOptions(dm, NULL, "-dm_view"));
91: PetscCall(ComputeVolume(dm));
92: }
94: PetscCall(DMDestroy(&dm));
95: PetscCall(DMDestroy(&surface));
96: PetscCall(PetscFinalize());
97: return 0;
98: }
100: /*TEST
102: build:
103: requires: egads tetgen
105: test:
106: suffix: sphere_0
107: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/unit_sphere.egadslite -dm_refine 1 -sur_dm_view -dm_plex_check_all -dm_plex_egads_print_model -sur_dm_plex_view_labels "EGADS Body ID","EGADS Face ID","EGADS Edge ID"
109: test:
110: suffix: sphere_egads
111: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/unit_sphere.egads -dm_refine 1 -sur_dm_view -dm_plex_check_all -dm_plex_egads_print_model -sur_dm_plex_view_labels "EGADS Body ID","EGADS Face ID","EGADS Edge ID"
113: test:
114: suffix: sphere_iges
115: TODO: broken
116: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/unit_sphere.igs -dm_refine 1 -sur_dm_view -dm_plex_check_all -dm_plex_egads_print_model -sur_dm_plex_view_labels "EGADS Body ID","EGADS Face ID","EGADS Edge ID"
118: test:
119: suffix: sphere_step
120: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/unit_sphere.stp -dm_refine 1 -sur_dm_view -dm_plex_check_all -dm_plex_egads_print_model -sur_dm_plex_view_labels "EGADS Body ID","EGADS Face ID","EGADS Edge ID"
122: test:
123: suffix: nozzle_0
124: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/nozzle.egadslite -sur_dm_refine 1 -sur_dm_view -dm_plex_check_all
126: test:
127: suffix: nozzle_egads
128: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/nozzle.egads -sur_dm_refine 1 -sur_dm_view -dm_plex_check_all
130: test:
131: suffix: nozzle_iges
132: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/nozzle.igs -sur_dm_refine 1 -sur_dm_view -dm_plex_check_all
134: test:
135: suffix: nozzle_step
136: args: -filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/nozzle.stp -sur_dm_refine 1 -sur_dm_view -dm_plex_check_all
138: TEST*/