Actual source code: plexvtk.c

      1: #define PETSCDM_DLL
      2: #include <petsc/private/dmpleximpl.h>
      3: #include <../src/sys/classes/viewer/impls/vtk/vtkvimpl.h>

      5: PetscErrorCode DMPlexVTKGetCellType_Internal(DM dm, PetscInt dim, PetscInt corners, PetscInt *cellType)
      6: {
      7:   *cellType = -1;
      8:   switch (dim) {
      9:   case 0:
     10:     switch (corners) {
     11:     case 1:
     12:       *cellType = 1; /* VTK_VERTEX */
     13:       break;
     14:     default:
     15:       break;
     16:     }
     17:     break;
     18:   case 1:
     19:     switch (corners) {
     20:     case 2:
     21:       *cellType = 3; /* VTK_LINE */
     22:       break;
     23:     case 3:
     24:       *cellType = 21; /* VTK_QUADRATIC_EDGE */
     25:       break;
     26:     default:
     27:       break;
     28:     }
     29:     break;
     30:   case 2:
     31:     switch (corners) {
     32:     case 3:
     33:       *cellType = 5; /* VTK_TRIANGLE */
     34:       break;
     35:     case 4:
     36:       *cellType = 9; /* VTK_QUAD */
     37:       break;
     38:     case 6:
     39:       *cellType = 22; /* VTK_QUADRATIC_TRIANGLE */
     40:       break;
     41:     case 9:
     42:       *cellType = 23; /* VTK_QUADRATIC_QUAD */
     43:       break;
     44:     default:
     45:       break;
     46:     }
     47:     break;
     48:   case 3:
     49:     switch (corners) {
     50:     case 4:
     51:       *cellType = 10; /* VTK_TETRA */
     52:       break;
     53:     case 6:
     54:       *cellType = 13; /* VTK_WEDGE */
     55:       break;
     56:     case 8:
     57:       *cellType = 12; /* VTK_HEXAHEDRON */
     58:       break;
     59:     case 10:
     60:       *cellType = 24; /* VTK_QUADRATIC_TETRA */
     61:       break;
     62:     case 27:
     63:       *cellType = 29; /* VTK_QUADRATIC_HEXAHEDRON */
     64:       break;
     65:     default:
     66:       break;
     67:     }
     68:   }
     69:   return 0;
     70: }

     72: static PetscErrorCode DMPlexVTKWriteCells_ASCII(DM dm, FILE *fp, PetscInt *totalCells)
     73: {
     74:   MPI_Comm       comm;
     75:   DMLabel        label;
     76:   IS             globalVertexNumbers = NULL;
     77:   const PetscInt *gvertex;
     78:   PetscInt       dim;
     79:   PetscInt       numCorners = 0, totCorners = 0, maxCorners, *corners;
     80:   PetscInt       numCells   = 0, totCells   = 0, maxCells, cellHeight;
     81:   PetscInt       numLabelCells, maxLabelCells, cStart, cEnd, c, vStart, vEnd, v;
     82:   PetscMPIInt    size, rank, proc, tag;

     84:   PetscObjectGetComm((PetscObject)dm,&comm);
     85:   PetscCommGetNewTag(comm, &tag);
     86:   MPI_Comm_size(comm, &size);
     87:   MPI_Comm_rank(comm, &rank);
     88:   DMGetDimension(dm, &dim);
     89:   DMPlexGetVTKCellHeight(dm, &cellHeight);
     90:   DMPlexGetHeightStratum(dm, cellHeight, &cStart, &cEnd);
     91:   DMPlexGetDepthStratum(dm, 0, &vStart, &vEnd);
     92:   DMGetLabel(dm, "vtk", &label);
     93:   DMGetStratumSize(dm, "vtk", 1, &numLabelCells);
     94:   MPIU_Allreduce(&numLabelCells, &maxLabelCells, 1, MPIU_INT, MPI_MAX, comm);
     95:   if (!maxLabelCells) label = NULL;
     96:   for (c = cStart; c < cEnd; ++c) {
     97:     PetscInt *closure = NULL;
     98:     PetscInt closureSize, value;

    100:     if (label) {
    101:       DMLabelGetValue(label, c, &value);
    102:       if (value != 1) continue;
    103:     }
    104:     DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure);
    105:     for (v = 0; v < closureSize*2; v += 2) {
    106:       if ((closure[v] >= vStart) && (closure[v] < vEnd)) ++numCorners;
    107:     }
    108:     DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure);
    109:     ++numCells;
    110:   }
    111:   maxCells = numCells;
    112:   MPI_Reduce(&numCells, &totCells, 1, MPIU_INT, MPI_SUM, 0, comm);
    113:   MPI_Reduce(&numCells, &maxCells, 1, MPIU_INT, MPI_MAX, 0, comm);
    114:   MPI_Reduce(&numCorners, &totCorners, 1, MPIU_INT, MPI_SUM, 0, comm);
    115:   MPI_Reduce(&numCorners, &maxCorners, 1, MPIU_INT, MPI_MAX, 0, comm);
    116:   DMPlexGetVertexNumbering(dm, &globalVertexNumbers);
    117:   ISGetIndices(globalVertexNumbers, &gvertex);
    118:   PetscMalloc1(maxCells, &corners);
    119:   PetscFPrintf(comm, fp, "CELLS %D %D\n", totCells, totCorners+totCells);
    120:   if (rank == 0) {
    121:     PetscInt *remoteVertices, *vertices;

    123:     PetscMalloc1(maxCorners, &vertices);
    124:     for (c = cStart, numCells = 0; c < cEnd; ++c) {
    125:       PetscInt *closure = NULL;
    126:       PetscInt closureSize, value, nC = 0;

    128:       if (label) {
    129:         DMLabelGetValue(label, c, &value);
    130:         if (value != 1) continue;
    131:       }
    132:       DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure);
    133:       for (v = 0; v < closureSize*2; v += 2) {
    134:         if ((closure[v] >= vStart) && (closure[v] < vEnd)) {
    135:           const PetscInt gv = gvertex[closure[v] - vStart];
    136:           vertices[nC++] = gv < 0 ? -(gv+1) : gv;
    137:         }
    138:       }
    139:       DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure);
    140:       DMPlexReorderCell(dm, c, vertices);
    141:       corners[numCells++] = nC;
    142:       PetscFPrintf(comm, fp, "%D ", nC);
    143:       for (v = 0; v < nC; ++v) {
    144:         PetscFPrintf(comm, fp, " %D", vertices[v]);
    145:       }
    146:       PetscFPrintf(comm, fp, "\n");
    147:     }
    148:     if (size > 1) PetscMalloc1(maxCorners+maxCells, &remoteVertices);
    149:     for (proc = 1; proc < size; ++proc) {
    150:       MPI_Status status;

    152:       MPI_Recv(&numCorners, 1, MPIU_INT, proc, tag, comm, &status);
    153:       MPI_Recv(remoteVertices, numCorners, MPIU_INT, proc, tag, comm, &status);
    154:       for (c = 0; c < numCorners;) {
    155:         PetscInt nC = remoteVertices[c++];

    157:         for (v = 0; v < nC; ++v, ++c) {
    158:           vertices[v] = remoteVertices[c];
    159:         }
    160:         PetscFPrintf(comm, fp, "%D ", nC);
    161:         for (v = 0; v < nC; ++v) {
    162:           PetscFPrintf(comm, fp, " %D", vertices[v]);
    163:         }
    164:         PetscFPrintf(comm, fp, "\n");
    165:       }
    166:     }
    167:     if (size > 1) PetscFree(remoteVertices);
    168:     PetscFree(vertices);
    169:   } else {
    170:     PetscInt *localVertices, numSend = numCells+numCorners, k = 0;

    172:     PetscMalloc1(numSend, &localVertices);
    173:     for (c = cStart, numCells = 0; c < cEnd; ++c) {
    174:       PetscInt *closure = NULL;
    175:       PetscInt closureSize, value, nC = 0;

    177:       if (label) {
    178:         DMLabelGetValue(label, c, &value);
    179:         if (value != 1) continue;
    180:       }
    181:       DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure);
    182:       for (v = 0; v < closureSize*2; v += 2) {
    183:         if ((closure[v] >= vStart) && (closure[v] < vEnd)) {
    184:           const PetscInt gv = gvertex[closure[v] - vStart];
    185:           closure[nC++] = gv < 0 ? -(gv+1) : gv;
    186:         }
    187:       }
    188:       corners[numCells++] = nC;
    189:       localVertices[k++]  = nC;
    190:       for (v = 0; v < nC; ++v, ++k) {
    191:         localVertices[k] = closure[v];
    192:       }
    193:       DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure);
    194:       DMPlexReorderCell(dm, c, localVertices+k-nC);
    195:     }
    197:     MPI_Send(&numSend, 1, MPIU_INT, 0, tag, comm);
    198:     MPI_Send(localVertices, numSend, MPIU_INT, 0, tag, comm);
    199:     PetscFree(localVertices);
    200:   }
    201:   ISRestoreIndices(globalVertexNumbers, &gvertex);
    202:   PetscFPrintf(comm, fp, "CELL_TYPES %D\n", totCells);
    203:   if (rank == 0) {
    204:     PetscInt cellType;

    206:     for (c = 0; c < numCells; ++c) {
    207:       DMPlexVTKGetCellType_Internal(dm, dim, corners[c], &cellType);
    208:       PetscFPrintf(comm, fp, "%D\n", cellType);
    209:     }
    210:     for (proc = 1; proc < size; ++proc) {
    211:       MPI_Status status;

    213:       MPI_Recv(&numCells, 1, MPIU_INT, proc, tag, comm, &status);
    214:       MPI_Recv(corners, numCells, MPIU_INT, proc, tag, comm, &status);
    215:       for (c = 0; c < numCells; ++c) {
    216:         DMPlexVTKGetCellType_Internal(dm, dim, corners[c], &cellType);
    217:         PetscFPrintf(comm, fp, "%D\n", cellType);
    218:       }
    219:     }
    220:   } else {
    221:     MPI_Send(&numCells, 1, MPIU_INT, 0, tag, comm);
    222:     MPI_Send(corners, numCells, MPIU_INT, 0, tag, comm);
    223:   }
    224:   PetscFree(corners);
    225:   *totalCells = totCells;
    226:   return 0;
    227: }

    229: static PetscErrorCode DMPlexVTKWritePartition_ASCII(DM dm, FILE *fp)
    230: {
    231:   MPI_Comm       comm;
    232:   PetscInt       numCells = 0, cellHeight;
    233:   PetscInt       numLabelCells, cStart, cEnd, c;
    234:   PetscMPIInt    size, rank, proc, tag;
    235:   PetscBool      hasLabel;

    237:   PetscObjectGetComm((PetscObject)dm,&comm);
    238:   PetscCommGetNewTag(comm, &tag);
    239:   MPI_Comm_size(comm, &size);
    240:   MPI_Comm_rank(comm, &rank);
    241:   DMPlexGetVTKCellHeight(dm, &cellHeight);
    242:   DMPlexGetHeightStratum(dm, cellHeight, &cStart, &cEnd);
    243:   DMGetStratumSize(dm, "vtk", 1, &numLabelCells);
    244:   hasLabel = numLabelCells > 0 ? PETSC_TRUE : PETSC_FALSE;
    245:   for (c = cStart; c < cEnd; ++c) {
    246:     if (hasLabel) {
    247:       PetscInt value;

    249:       DMGetLabelValue(dm, "vtk", c, &value);
    250:       if (value != 1) continue;
    251:     }
    252:     ++numCells;
    253:   }
    254:   if (rank == 0) {
    255:     for (c = 0; c < numCells; ++c) PetscFPrintf(comm, fp, "%d\n", rank);
    256:     for (proc = 1; proc < size; ++proc) {
    257:       MPI_Status status;

    259:       MPI_Recv(&numCells, 1, MPIU_INT, proc, tag, comm, &status);
    260:       for (c = 0; c < numCells; ++c) PetscFPrintf(comm, fp, "%d\n", proc);
    261:     }
    262:   } else {
    263:     MPI_Send(&numCells, 1, MPIU_INT, 0, tag, comm);
    264:   }
    265:   return 0;
    266: }

    268: #if defined(PETSC_USE_REAL_DOUBLE) || defined(PETSC_USE_REAL___FLOAT128)
    269: typedef double PetscVTKReal;
    270: #elif defined(PETSC_USE_REAL_SINGLE) || defined(PETSC_USE_REAL___FP16)
    271: typedef float PetscVTKReal;
    272: #else
    273: typedef PetscReal PetscVTKReal;
    274: #endif

    276: static PetscErrorCode DMPlexVTKWriteSection_ASCII(DM dm, PetscSection section, PetscSection globalSection, Vec v, FILE *fp, PetscInt enforceDof, PetscInt precision, PetscReal scale, PetscInt imag)
    277: {
    278:   MPI_Comm           comm;
    279:   const MPI_Datatype mpiType = MPIU_SCALAR;
    280:   PetscScalar        *array;
    281:   PetscInt           numDof = 0, maxDof;
    282:   PetscInt           numLabelCells, cellHeight, cStart, cEnd, numLabelVertices, vStart, vEnd, pStart, pEnd, p;
    283:   PetscMPIInt        size, rank, proc, tag;
    284:   PetscBool          hasLabel;

    286:   PetscObjectGetComm((PetscObject)dm,&comm);
    289:   if (precision < 0) precision = 6;
    290:   PetscCommGetNewTag(comm, &tag);
    291:   MPI_Comm_size(comm, &size);
    292:   MPI_Comm_rank(comm, &rank);
    293:   PetscSectionGetChart(section, &pStart, &pEnd);
    294:   /* VTK only wants the values at cells or vertices */
    295:   DMPlexGetVTKCellHeight(dm, &cellHeight);
    296:   DMPlexGetHeightStratum(dm, cellHeight, &cStart, &cEnd);
    297:   DMPlexGetDepthStratum(dm, 0, &vStart, &vEnd);
    298:   pStart   = PetscMax(PetscMin(cStart, vStart), pStart);
    299:   pEnd     = PetscMin(PetscMax(cEnd,   vEnd),   pEnd);
    300:   DMGetStratumSize(dm, "vtk", 1, &numLabelCells);
    301:   DMGetStratumSize(dm, "vtk", 2, &numLabelVertices);
    302:   hasLabel = numLabelCells > 0 || numLabelVertices > 0 ? PETSC_TRUE : PETSC_FALSE;
    303:   for (p = pStart; p < pEnd; ++p) {
    304:     /* Reject points not either cells or vertices */
    305:     if (((p < cStart) || (p >= cEnd)) && ((p < vStart) || (p >= vEnd))) continue;
    306:     if (hasLabel) {
    307:       PetscInt value;

    309:       if (((p >= cStart) && (p < cEnd) && numLabelCells) ||
    310:           ((p >= vStart) && (p < vEnd) && numLabelVertices)) {
    311:         DMGetLabelValue(dm, "vtk", p, &value);
    312:         if (value != 1) continue;
    313:       }
    314:     }
    315:     PetscSectionGetDof(section, p, &numDof);
    316:     if (numDof) break;
    317:   }
    318:   MPIU_Allreduce(&numDof, &maxDof, 1, MPIU_INT, MPI_MAX, comm);
    319:   enforceDof = PetscMax(enforceDof, maxDof);
    320:   VecGetArray(v, &array);
    321:   if (rank == 0) {
    322:     PetscVTKReal dval;
    323:     PetscScalar  val;
    324:     char formatString[8];

    326:     PetscSNPrintf(formatString, 8, "%%.%de", precision);
    327:     for (p = pStart; p < pEnd; ++p) {
    328:       /* Here we lose a way to filter points by keeping them out of the Numbering */
    329:       PetscInt dof, off, goff, d;

    331:       /* Reject points not either cells or vertices */
    332:       if (((p < cStart) || (p >= cEnd)) && ((p < vStart) || (p >= vEnd))) continue;
    333:       if (hasLabel) {
    334:         PetscInt value;

    336:         if (((p >= cStart) && (p < cEnd) && numLabelCells) ||
    337:             ((p >= vStart) && (p < vEnd) && numLabelVertices)) {
    338:           DMGetLabelValue(dm, "vtk", p, &value);
    339:           if (value != 1) continue;
    340:         }
    341:       }
    342:       PetscSectionGetDof(section, p, &dof);
    343:       PetscSectionGetOffset(section, p, &off);
    344:       PetscSectionGetOffset(globalSection, p, &goff);
    345:       if (dof && goff >= 0) {
    346:         for (d = 0; d < dof; d++) {
    347:           if (d > 0) {
    348:             PetscFPrintf(comm, fp, " ");
    349:           }
    350:           val = array[off+d];
    351:           dval = (PetscVTKReal) ((imag ? PetscImaginaryPart(val) : PetscRealPart(val)) * scale);
    352:           PetscFPrintf(comm, fp, formatString, dval);
    353:         }
    354:         for (d = dof; d < enforceDof; d++) {
    355:           PetscFPrintf(comm, fp, " 0.0");
    356:         }
    357:         PetscFPrintf(comm, fp, "\n");
    358:       }
    359:     }
    360:     for (proc = 1; proc < size; ++proc) {
    361:       PetscScalar *remoteValues;
    362:       PetscInt    size = 0, d;
    363:       MPI_Status  status;

    365:       MPI_Recv(&size, 1, MPIU_INT, proc, tag, comm, &status);
    366:       PetscMalloc1(size, &remoteValues);
    367:       MPI_Recv(remoteValues, size, mpiType, proc, tag, comm, &status);
    368:       for (p = 0; p < size/maxDof; ++p) {
    369:         for (d = 0; d < maxDof; ++d) {
    370:           if (d > 0) {
    371:             PetscFPrintf(comm, fp, " ");
    372:           }
    373:           val = remoteValues[p*maxDof+d];
    374:           dval = (PetscVTKReal) ((imag ? PetscImaginaryPart(val) : PetscRealPart(val)) * scale);
    375:           PetscFPrintf(comm, fp, formatString, dval);
    376:         }
    377:         for (d = maxDof; d < enforceDof; ++d) {
    378:           PetscFPrintf(comm, fp, " 0.0");
    379:         }
    380:         PetscFPrintf(comm, fp, "\n");
    381:       }
    382:       PetscFree(remoteValues);
    383:     }
    384:   } else {
    385:     PetscScalar *localValues;
    386:     PetscInt    size, k = 0;

    388:     PetscSectionGetStorageSize(section, &size);
    389:     PetscMalloc1(size, &localValues);
    390:     for (p = pStart; p < pEnd; ++p) {
    391:       PetscInt dof, off, goff, d;

    393:       /* Reject points not either cells or vertices */
    394:       if (((p < cStart) || (p >= cEnd)) && ((p < vStart) || (p >= vEnd))) continue;
    395:       if (hasLabel) {
    396:         PetscInt value;

    398:         if (((p >= cStart) && (p < cEnd) && numLabelCells) ||
    399:             ((p >= vStart) && (p < vEnd) && numLabelVertices)) {
    400:           DMGetLabelValue(dm, "vtk", p, &value);
    401:           if (value != 1) continue;
    402:         }
    403:       }
    404:       PetscSectionGetDof(section, p, &dof);
    405:       PetscSectionGetOffset(section, p, &off);
    406:       PetscSectionGetOffset(globalSection, p, &goff);
    407:       if (goff >= 0) {
    408:         for (d = 0; d < dof; ++d) {
    409:           localValues[k++] = array[off+d];
    410:         }
    411:       }
    412:     }
    413:     MPI_Send(&k, 1, MPIU_INT, 0, tag, comm);
    414:     MPI_Send(localValues, k, mpiType, 0, tag, comm);
    415:     PetscFree(localValues);
    416:   }
    417:   VecRestoreArray(v, &array);
    418:   return 0;
    419: }

    421: static PetscErrorCode DMPlexVTKWriteField_ASCII(DM dm, PetscSection section, PetscSection globalSection, Vec field, const char name[], FILE *fp, PetscInt enforceDof, PetscInt precision, PetscReal scale, PetscBool nameComplex, PetscInt imag)
    422: {
    423:   MPI_Comm       comm;
    424:   PetscInt       numDof = 0, maxDof;
    425:   PetscInt       pStart, pEnd, p;

    427:   PetscObjectGetComm((PetscObject)dm,&comm);
    428:   PetscSectionGetChart(section, &pStart, &pEnd);
    429:   for (p = pStart; p < pEnd; ++p) {
    430:     PetscSectionGetDof(section, p, &numDof);
    431:     if (numDof) break;
    432:   }
    433:   numDof = PetscMax(numDof, enforceDof);
    434:   MPIU_Allreduce(&numDof, &maxDof, 1, MPIU_INT, MPI_MAX, PetscObjectComm((PetscObject)dm));
    435:   if (!name) name = "Unknown";
    436:   if (maxDof == 3) {
    437:     if (nameComplex) {
    438:       PetscFPrintf(comm, fp, "VECTORS %s.%s double\n", name, imag ? "Im" : "Re");
    439:     } else {
    440:       PetscFPrintf(comm, fp, "VECTORS %s double\n", name);
    441:     }
    442:   } else {
    443:     if (nameComplex) {
    444:       PetscFPrintf(comm, fp, "SCALARS %s.%s double %D\n", name, imag ? "Im" : "Re", maxDof);
    445:     } else {
    446:       PetscFPrintf(comm, fp, "SCALARS %s double %D\n", name, maxDof);
    447:     }
    448:     PetscFPrintf(comm, fp, "LOOKUP_TABLE default\n");
    449:   }
    450:   DMPlexVTKWriteSection_ASCII(dm, section, globalSection, field, fp, enforceDof, precision, scale, imag);
    451:   return 0;
    452: }

    454: static PetscErrorCode DMPlexVTKWriteAll_ASCII(DM dm, PetscViewer viewer)
    455: {
    456:   MPI_Comm                 comm;
    457:   PetscViewer_VTK          *vtk = (PetscViewer_VTK*) viewer->data;
    458:   FILE                     *fp;
    459:   PetscViewerVTKObjectLink link;
    460:   PetscInt                 totVertices, totCells = 0, loops_per_scalar, l;
    461:   PetscBool                hasPoint = PETSC_FALSE, hasCell = PETSC_FALSE, writePartition = PETSC_FALSE, localized, writeComplex;
    462:   const char               *dmname;

    464: #if defined(PETSC_USE_COMPLEX)
    465:   loops_per_scalar = 2;
    466:   writeComplex = PETSC_TRUE;
    467: #else
    468:   loops_per_scalar = 1;
    469:   writeComplex = PETSC_FALSE;
    470: #endif
    471:   DMGetCoordinatesLocalized(dm,&localized);
    472:   PetscObjectGetComm((PetscObject)dm,&comm);
    474:   PetscFOpen(comm, vtk->filename, "wb", &fp);
    475:   PetscObjectGetName((PetscObject)dm, &dmname);
    476:   PetscFPrintf(comm, fp, "# vtk DataFile Version 2.0\n");
    477:   PetscFPrintf(comm, fp, "%s\n", dmname);
    478:   PetscFPrintf(comm, fp, "ASCII\n");
    479:   PetscFPrintf(comm, fp, "DATASET UNSTRUCTURED_GRID\n");
    480:   /* Vertices */
    481:   {
    482:     PetscSection  section, coordSection, globalCoordSection;
    483:     Vec           coordinates;
    484:     PetscReal     lengthScale;
    485:     DMLabel       label;
    486:     IS            vStratumIS;
    487:     PetscLayout   vLayout;

    489:     DMPlexGetScale(dm, PETSC_UNIT_LENGTH, &lengthScale);
    490:     DMGetCoordinatesLocal(dm, &coordinates);
    491:     DMPlexGetDepthLabel(dm, &label);
    492:     DMLabelGetStratumIS(label, 0, &vStratumIS);
    493:     DMGetCoordinateSection(dm, &section);                                 /* This section includes all points */
    494:     PetscSectionCreateSubmeshSection(section, vStratumIS, &coordSection); /* This one includes just vertices */
    495:     PetscSectionCreateGlobalSection(coordSection, dm->sf, PETSC_FALSE, PETSC_FALSE, &globalCoordSection);
    496:     PetscSectionGetPointLayout(comm, globalCoordSection, &vLayout);
    497:     PetscLayoutGetSize(vLayout, &totVertices);
    498:     PetscFPrintf(comm, fp, "POINTS %D double\n", totVertices);
    499:     DMPlexVTKWriteSection_ASCII(dm, coordSection, globalCoordSection, coordinates, fp, 3, PETSC_DETERMINE, lengthScale, 0);
    500:     ISDestroy(&vStratumIS);
    501:     PetscLayoutDestroy(&vLayout);
    502:     PetscSectionDestroy(&coordSection);
    503:     PetscSectionDestroy(&globalCoordSection);
    504:   }
    505:   /* Cells */
    506:   DMPlexVTKWriteCells_ASCII(dm, fp, &totCells);
    507:   /* Vertex fields */
    508:   for (link = vtk->link; link; link = link->next) {
    509:     if ((link->ft == PETSC_VTK_POINT_FIELD) || (link->ft == PETSC_VTK_POINT_VECTOR_FIELD)) hasPoint = PETSC_TRUE;
    510:     if ((link->ft == PETSC_VTK_CELL_FIELD)  || (link->ft == PETSC_VTK_CELL_VECTOR_FIELD))  hasCell  = PETSC_TRUE;
    511:   }
    512:   if (hasPoint) {
    513:     PetscFPrintf(comm, fp, "POINT_DATA %D\n", totVertices);
    514:     for (link = vtk->link; link; link = link->next) {
    515:       Vec          X = (Vec) link->vec;
    516:       PetscSection section = NULL, globalSection, newSection = NULL;
    517:       char         namebuf[256];
    518:       const char   *name;
    519:       PetscInt     enforceDof = PETSC_DETERMINE;

    521:       if ((link->ft != PETSC_VTK_POINT_FIELD) && (link->ft != PETSC_VTK_POINT_VECTOR_FIELD)) continue;
    522:       if (link->ft == PETSC_VTK_POINT_VECTOR_FIELD) enforceDof = 3;
    523:       PetscObjectGetName(link->vec, &name);
    524:       PetscObjectQuery(link->vec, "section", (PetscObject*) &section);
    525:       if (!section) {
    526:         DM           dmX;

    528:         VecGetDM(X, &dmX);
    529:         if (dmX) {
    530:           DMLabel  subpointMap, subpointMapX;
    531:           PetscInt dim, dimX, pStart, pEnd, qStart, qEnd;

    533:           DMGetLocalSection(dmX, &section);
    534:           /* Here is where we check whether dmX is a submesh of dm */
    535:           DMGetDimension(dm,  &dim);
    536:           DMGetDimension(dmX, &dimX);
    537:           DMPlexGetChart(dm,  &pStart, &pEnd);
    538:           DMPlexGetChart(dmX, &qStart, &qEnd);
    539:           DMPlexGetSubpointMap(dm,  &subpointMap);
    540:           DMPlexGetSubpointMap(dmX, &subpointMapX);
    541:           if (((dim != dimX) || ((pEnd-pStart) < (qEnd-qStart))) && subpointMap && !subpointMapX) {
    542:             const PetscInt *ind = NULL;
    543:             IS              subpointIS;
    544:             PetscInt        n = 0, q;

    546:             PetscSectionGetChart(section, &qStart, &qEnd);
    547:             DMPlexGetSubpointIS(dm, &subpointIS);
    548:             if (subpointIS) {
    549:               ISGetLocalSize(subpointIS, &n);
    550:               ISGetIndices(subpointIS, &ind);
    551:             }
    552:             PetscSectionCreate(comm, &newSection);
    553:             PetscSectionSetChart(newSection, pStart, pEnd);
    554:             for (q = qStart; q < qEnd; ++q) {
    555:               PetscInt dof, off, p;

    557:               PetscSectionGetDof(section, q, &dof);
    558:               if (dof) {
    559:                 PetscFindInt(q, n, ind, &p);
    560:                 if (p >= pStart) {
    561:                   PetscSectionSetDof(newSection, p, dof);
    562:                   PetscSectionGetOffset(section, q, &off);
    563:                   PetscSectionSetOffset(newSection, p, off);
    564:                 }
    565:               }
    566:             }
    567:             if (subpointIS) {
    568:               ISRestoreIndices(subpointIS, &ind);
    569:             }
    570:             /* No need to setup section */
    571:             section = newSection;
    572:           }
    573:         }
    574:       }
    576:       if (link->field >= 0) {
    577:         const char *fieldname;

    579:         PetscSectionGetFieldName(section, link->field, &fieldname);
    580:         PetscSectionGetField(section, link->field, &section);
    581:         if (fieldname) {
    582:           PetscSNPrintf(namebuf, sizeof(namebuf), "%s%s", name, fieldname);
    583:         } else {
    584:           PetscSNPrintf(namebuf, sizeof(namebuf), "%s%D", name, link->field);
    585:         }
    586:       } else {
    587:         PetscSNPrintf(namebuf, sizeof(namebuf), "%s", name);
    588:       }
    589:       PetscViewerVTKSanitizeName_Internal(namebuf, sizeof(namebuf));
    590:       PetscSectionCreateGlobalSection(section, dm->sf, PETSC_FALSE, PETSC_FALSE, &globalSection);
    591:       for (l = 0; l < loops_per_scalar; l++) {
    592:         DMPlexVTKWriteField_ASCII(dm, section, globalSection, X, namebuf, fp, enforceDof, PETSC_DETERMINE, 1.0, writeComplex, l);
    593:       }
    594:       PetscSectionDestroy(&globalSection);
    595:       if (newSection) PetscSectionDestroy(&newSection);
    596:     }
    597:   }
    598:   /* Cell Fields */
    599:   PetscOptionsGetBool(((PetscObject) dm)->options,((PetscObject) dm)->prefix, "-dm_view_partition", &writePartition, NULL);
    600:   if (hasCell || writePartition) {
    601:     PetscFPrintf(comm, fp, "CELL_DATA %D\n", totCells);
    602:     for (link = vtk->link; link; link = link->next) {
    603:       Vec          X = (Vec) link->vec;
    604:       PetscSection section = NULL, globalSection;
    605:       const char   *name = "";
    606:       char         namebuf[256];
    607:       PetscInt     enforceDof = PETSC_DETERMINE;

    609:       if ((link->ft != PETSC_VTK_CELL_FIELD) && (link->ft != PETSC_VTK_CELL_VECTOR_FIELD)) continue;
    610:       if (link->ft == PETSC_VTK_CELL_VECTOR_FIELD) enforceDof = 3;
    611:       PetscObjectGetName(link->vec, &name);
    612:       PetscObjectQuery(link->vec, "section", (PetscObject*) &section);
    613:       if (!section) {
    614:         DM           dmX;

    616:         VecGetDM(X, &dmX);
    617:         if (dmX) {
    618:           DMGetLocalSection(dmX, &section);
    619:         }
    620:       }
    622:       if (link->field >= 0) {
    623:         const char *fieldname;

    625:         PetscSectionGetFieldName(section, link->field, &fieldname);
    626:         PetscSectionGetField(section, link->field, &section);
    627:         if (fieldname) {
    628:           PetscSNPrintf(namebuf, sizeof(namebuf), "%s%s", name, fieldname);
    629:         } else {
    630:           PetscSNPrintf(namebuf, sizeof(namebuf), "%s%D", name, link->field);
    631:         }
    632:       } else {
    633:         PetscSNPrintf(namebuf, sizeof(namebuf), "%s", name);
    634:       }
    635:       PetscViewerVTKSanitizeName_Internal(namebuf, sizeof(namebuf));
    636:       PetscSectionCreateGlobalSection(section, dm->sf, PETSC_FALSE, PETSC_FALSE, &globalSection);
    637:       for (l = 0; l < loops_per_scalar; l++) {
    638:         DMPlexVTKWriteField_ASCII(dm, section, globalSection, X, namebuf, fp, enforceDof, PETSC_DETERMINE, 1.0, writeComplex, l);
    639:       }
    640:       PetscSectionDestroy(&globalSection);
    641:     }
    642:     if (writePartition) {
    643:       PetscFPrintf(comm, fp, "SCALARS partition int 1\n");
    644:       PetscFPrintf(comm, fp, "LOOKUP_TABLE default\n");
    645:       DMPlexVTKWritePartition_ASCII(dm, fp);
    646:     }
    647:   }
    648:   /* Cleanup */
    649:   PetscFClose(comm, fp);
    650:   return 0;
    651: }

    653: /*@C
    654:   DMPlexVTKWriteAll - Write a file containing all the fields that have been provided to the viewer

    656:   Collective

    658:   Input Parameters:
    659: + odm - The DMPlex specifying the mesh, passed as a PetscObject
    660: - viewer - viewer of type VTK

    662:   Level: developer

    664:   Note:
    665:   This function is a callback used by the VTK viewer to actually write the file.
    666:   The reason for this odd model is that the VTK file format does not provide any way to write one field at a time.
    667:   Instead, metadata for the entire file needs to be available up-front before you can start writing the file.

    669: .seealso: PETSCVIEWERVTK
    670: @*/
    671: PetscErrorCode DMPlexVTKWriteAll(PetscObject odm, PetscViewer viewer)
    672: {
    673:   DM             dm = (DM) odm;
    674:   PetscBool      isvtk;

    678:   PetscObjectTypeCompare((PetscObject) viewer, PETSCVIEWERVTK, &isvtk);
    680:   switch (viewer->format) {
    681:   case PETSC_VIEWER_ASCII_VTK_DEPRECATED:
    682:     DMPlexVTKWriteAll_ASCII(dm, viewer);
    683:     break;
    684:   case PETSC_VIEWER_VTK_VTU:
    685:     DMPlexVTKWriteAll_VTU(dm, viewer);
    686:     break;
    687:   default: SETERRQ(PetscObjectComm((PetscObject)dm), PETSC_ERR_SUP, "No support for format '%s'", PetscViewerFormats[viewer->format]);
    688:   }
    689:   return 0;
    690: }