Date: 2025-03-29T05:58:43+00:00

Actual source code: vtkv.c

      1: #include <../src/sys/classes/viewer/impls/vtk/vtkvimpl.h>

      3: /*MC
      4:     PetscViewerVTKWriteFunction - functional form used to provide a writer to the `PETSCVIEWERVTK`

      6:      Synopsis:
      7: #include <petscviewer.h>
      8:      PetscViewerVTKWriteFunction(PetscObject object,PetscViewer viewer)

     10:      Input Parameters:
     11: +      object - the PETSc object to be written
     12: -      viewer - viewer it is to be written to

     14:    Level: developer

     16: .seealso: [](sec_viewers), `PETSCVIEWERVTK`, `PetscViewerVTKAddField()`
     17: M*/

     19: /*@C
     20:   PetscViewerVTKAddField - Add a field to the viewer

     22:   Collective

     24:   Input Parameters:
     25: + viewer                      - `PETSCVIEWERVTK`
     26: . dm                          - `DM` on which `Vec` lives
     27: . PetscViewerVTKWriteFunction - function to write this `Vec`
     28: . fieldnum                    - which field of the `DM` to write (`PETSC_DEFAULT` if the whole vector should be written)
     29: . fieldtype                   - Either `PETSC_VTK_POINT_FIELD` or `PETSC_VTK_CELL_FIELD`
     30: . checkdm                     - whether to check for identical dm arguments as fields are added
     31: - vec                         - `Vec` from which to write

     33:   Level: developer

     35:   Note:
     36:   This routine keeps exclusive ownership of the `Vec`. The caller should not use or destroy the `Vec` after calling it.

     38: .seealso: [](sec_viewers), `PETSCVIEWERVTK`, `PetscViewerVTKOpen()`, `DMDAVTKWriteAll()`, `PetscViewerVTKWriteFunction`, `PetscViewerVTKGetDM()`
     39: @*/
     40: PetscErrorCode PetscViewerVTKAddField(PetscViewer viewer, PetscObject dm, PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject, PetscViewer), PetscInt fieldnum, PetscViewerVTKFieldType fieldtype, PetscBool checkdm, PetscObject vec)
     41: {
     42:   PetscFunctionBegin;
     46:   PetscUseMethod(viewer, "PetscViewerVTKAddField_C", (PetscViewer, PetscObject, PetscErrorCode (*)(PetscObject, PetscViewer), PetscInt, PetscViewerVTKFieldType, PetscBool, PetscObject), (viewer, dm, PetscViewerVTKWriteFunction, fieldnum, fieldtype, checkdm, vec));
     47:   PetscFunctionReturn(PETSC_SUCCESS);
     48: }

     50: /*@
     51:   PetscViewerVTKGetDM - get the `DM` associated with the `PETSCVIEWERVTK` viewer

     53:   Collective

     55:   Input Parameters:
     56: + viewer - `PETSCVIEWERVTK` viewer
     57: - dm     - `DM` associated with the viewer (as a `PetscObject`)

     59:   Level: developer

     61: .seealso: [](sec_viewers), `PETSCVIEWERVTK`, `PetscViewerVTKOpen()`, `DMDAVTKWriteAll()`, `PetscViewerVTKWriteFunction`, `PetscViewerVTKAddField()`
     62: @*/
     63: PetscErrorCode PetscViewerVTKGetDM(PetscViewer viewer, PetscObject *dm)
     64: {
     65:   PetscFunctionBegin;
     67:   PetscUseMethod(viewer, "PetscViewerVTKGetDM_C", (PetscViewer, PetscObject *), (viewer, dm));
     68:   PetscFunctionReturn(PETSC_SUCCESS);
     69: }

     71: static PetscErrorCode PetscViewerDestroy_VTK(PetscViewer viewer)
     72: {
     73:   PetscViewer_VTK *vtk = (PetscViewer_VTK *)viewer->data;

     75:   PetscFunctionBegin;
     76:   PetscCall(PetscFree(vtk->filename));
     77:   PetscCall(PetscFree(vtk));
     78:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileSetName_C", NULL));
     79:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileGetName_C", NULL));
     80:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileSetMode_C", NULL));
     81:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileGetMode_C", NULL));
     82:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerVTKAddField_C", NULL));
     83:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerVTKGetDM_C", NULL));
     84:   PetscFunctionReturn(PETSC_SUCCESS);
     85: }

     87: static PetscErrorCode PetscViewerFlush_VTK(PetscViewer viewer)
     88: {
     89:   PetscViewer_VTK         *vtk = (PetscViewer_VTK *)viewer->data;
     90:   PetscViewerVTKObjectLink link, next;

     92:   PetscFunctionBegin;
     93:   PetscCheck(!vtk->link || !(!vtk->dm || !vtk->write), PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_WRONGSTATE, "No fields or no grid");
     94:   if (vtk->write) PetscCall((*vtk->write)(vtk->dm, viewer));
     95:   for (link = vtk->link; link; link = next) {
     96:     next = link->next;
     97:     PetscCall(PetscObjectDestroy(&link->vec));
     98:     PetscCall(PetscFree(link));
     99:   }
    100:   PetscCall(PetscObjectDestroy(&vtk->dm));
    101:   vtk->write = NULL;
    102:   vtk->link  = NULL;
    103:   PetscFunctionReturn(PETSC_SUCCESS);
    104: }

    106: static PetscErrorCode PetscViewerFileSetName_VTK(PetscViewer viewer, const char name[])
    107: {
    108:   PetscViewer_VTK *vtk = (PetscViewer_VTK *)viewer->data;
    109:   PetscBool        isvtk, isvts, isvtu, isvtr;
    110:   size_t           len;

    112:   PetscFunctionBegin;
    113:   PetscCall(PetscViewerFlush(viewer));
    114:   PetscCall(PetscFree(vtk->filename));
    115:   PetscCall(PetscStrlen(name, &len));
    116:   if (!len) {
    117:     isvtk = PETSC_TRUE;
    118:   } else {
    119:     PetscCall(PetscStrcasecmp(name + len - 4, ".vtk", &isvtk));
    120:     PetscCall(PetscStrcasecmp(name + len - 4, ".vts", &isvts));
    121:     PetscCall(PetscStrcasecmp(name + len - 4, ".vtu", &isvtu));
    122:     PetscCall(PetscStrcasecmp(name + len - 4, ".vtr", &isvtr));
    123:   }
    124:   if (isvtk) {
    125:     PetscCheck(viewer->format == PETSC_VIEWER_DEFAULT, PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_INCOMP, "Cannot use file '%s' with format %s, should have '.vtk' extension", name, PetscViewerFormats[viewer->format]);
    126:   } else if (isvts) {
    127:     if (viewer->format == PETSC_VIEWER_DEFAULT) viewer->format = PETSC_VIEWER_VTK_VTS;
    128:     PetscCheck(viewer->format == PETSC_VIEWER_VTK_VTS, PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_INCOMP, "Cannot use file '%s' with format %s, should have '.vts' extension", name, PetscViewerFormats[viewer->format]);
    129:   } else if (isvtu) {
    130:     if (viewer->format == PETSC_VIEWER_DEFAULT) viewer->format = PETSC_VIEWER_VTK_VTU;
    131:     PetscCheck(viewer->format == PETSC_VIEWER_VTK_VTU, PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_INCOMP, "Cannot use file '%s' with format %s, should have '.vtu' extension", name, PetscViewerFormats[viewer->format]);
    132:   } else if (isvtr) {
    133:     if (viewer->format == PETSC_VIEWER_DEFAULT) viewer->format = PETSC_VIEWER_VTK_VTR;
    134:     PetscCheck(viewer->format == PETSC_VIEWER_VTK_VTR, PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_INCOMP, "Cannot use file '%s' with format %s, should have '.vtr' extension", name, PetscViewerFormats[viewer->format]);
    135:   } else SETERRQ(PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_UNKNOWN_TYPE, "File '%s' has unrecognized extension", name);
    136:   PetscCall(PetscStrallocpy(len ? name : "stdout", &vtk->filename));
    137:   PetscFunctionReturn(PETSC_SUCCESS);
    138: }

    140: static PetscErrorCode PetscViewerFileGetName_VTK(PetscViewer viewer, const char **name)
    141: {
    142:   PetscViewer_VTK *vtk = (PetscViewer_VTK *)viewer->data;

    144:   PetscFunctionBegin;
    145:   *name = vtk->filename;
    146:   PetscFunctionReturn(PETSC_SUCCESS);
    147: }

    149: static PetscErrorCode PetscViewerFileSetMode_VTK(PetscViewer viewer, PetscFileMode type)
    150: {
    151:   PetscViewer_VTK *vtk = (PetscViewer_VTK *)viewer->data;

    153:   PetscFunctionBegin;
    154:   vtk->btype = type;
    155:   PetscFunctionReturn(PETSC_SUCCESS);
    156: }

    158: static PetscErrorCode PetscViewerFileGetMode_VTK(PetscViewer viewer, PetscFileMode *type)
    159: {
    160:   PetscViewer_VTK *vtk = (PetscViewer_VTK *)viewer->data;

    162:   PetscFunctionBegin;
    163:   *type = vtk->btype;
    164:   PetscFunctionReturn(PETSC_SUCCESS);
    165: }

    167: static PetscErrorCode PetscViewerVTKAddField_VTK(PetscViewer viewer, PetscObject dm, PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject, PetscViewer), PetscInt fieldnum, PetscViewerVTKFieldType fieldtype, PetscBool checkdm, PetscObject vec)
    168: {
    169:   PetscViewer_VTK         *vtk = (PetscViewer_VTK *)viewer->data;
    170:   PetscViewerVTKObjectLink link, tail = vtk->link;

    172:   PetscFunctionBegin;
    173:   if (vtk->dm) {
    174:     PetscCheck(!checkdm || dm == vtk->dm, PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_INCOMP, "Refusing to write a field from more than one grid to the same VTK file. Set checkdm = PETSC_FALSE to skip this check.");
    175:   } else {
    176:     PetscCall(PetscObjectReference(dm));
    177:     vtk->dm = dm;
    178:   }
    179:   vtk->write = PetscViewerVTKWriteFunction;
    180:   PetscCall(PetscNew(&link));
    181:   link->ft    = fieldtype;
    182:   link->vec   = vec;
    183:   link->field = fieldnum;
    184:   link->next  = NULL;
    185:   /* Append to list */
    186:   if (tail) {
    187:     while (tail->next) tail = tail->next;
    188:     tail->next = link;
    189:   } else vtk->link = link;
    190:   PetscFunctionReturn(PETSC_SUCCESS);
    191: }

    193: static PetscErrorCode PetscViewerVTKGetDM_VTK(PetscViewer viewer, PetscObject *dm)
    194: {
    195:   PetscViewer_VTK *vtk = (PetscViewer_VTK *)viewer->data;

    197:   PetscFunctionBegin;
    198:   *dm = vtk->dm;
    199:   PetscFunctionReturn(PETSC_SUCCESS);
    200: }

    202: /*MC
    203:    PETSCVIEWERVTK - A viewer that writes to a VTK file

    205:   Level: beginner

    207: .seealso: [](sec_viewers), `PetscViewerVTKOpen()`, `PetscViewerHDF5Open()`, `PetscViewerStringSPrintf()`, `PetscViewerSocketOpen()`, `PetscViewerDrawOpen()`, `PETSCVIEWERSOCKET`,
    208:           `PetscViewerCreate()`, `PetscViewerASCIIOpen()`, `PetscViewerBinaryOpen()`, `PETSCVIEWERBINARY`, `PETSCVIEWERDRAW`, `PETSCVIEWERSTRING`,
    209:           `PetscViewerMatlabOpen()`, `VecView()`, `DMView()`, `PetscViewerMatlabPutArray()`, `PETSCVIEWERASCII`, `PETSCVIEWERMATLAB`,
    210:           `PetscViewerFileSetName()`, `PetscViewerFileSetMode()`, `PetscViewerFormat`, `PetscViewerType`, `PetscViewerSetType()`
    211: M*/

    213: PETSC_EXTERN PetscErrorCode PetscViewerCreate_VTK(PetscViewer v)
    214: {
    215:   PetscViewer_VTK *vtk;

    217:   PetscFunctionBegin;
    218:   PetscCall(PetscNew(&vtk));

    220:   v->data         = (void *)vtk;
    221:   v->ops->destroy = PetscViewerDestroy_VTK;
    222:   v->ops->flush   = PetscViewerFlush_VTK;
    223:   vtk->btype      = FILE_MODE_UNDEFINED;
    224:   vtk->filename   = NULL;

    226:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileSetName_C", PetscViewerFileSetName_VTK));
    227:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileGetName_C", PetscViewerFileGetName_VTK));
    228:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileSetMode_C", PetscViewerFileSetMode_VTK));
    229:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileGetMode_C", PetscViewerFileGetMode_VTK));
    230:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerVTKAddField_C", PetscViewerVTKAddField_VTK));
    231:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerVTKGetDM_C", PetscViewerVTKGetDM_VTK));
    232:   PetscFunctionReturn(PETSC_SUCCESS);
    233: }

    235: /*@
    236:   PetscViewerVTKOpen - Opens a `PETSCVIEWERVTK` viewer file.

    238:   Collective

    240:   Input Parameters:
    241: + comm - MPI communicator
    242: . name - name of file
    243: - type - type of file
    244: .vb
    245:   FILE_MODE_WRITE - create new file for binary output
    246:   FILE_MODE_READ - open existing file for binary input (not currently supported)
    247:   FILE_MODE_APPEND - open existing file for binary output (not currently supported)
    248: .ve

    250:   Output Parameter:
    251: . vtk - `PetscViewer` for VTK input/output to use with the specified file

    253:   Level: beginner

    255: .seealso: [](sec_viewers), `PETSCVIEWERVTK`, `PetscViewerASCIIOpen()`, `PetscViewerPushFormat()`, `PetscViewerDestroy()`,
    256:           `VecView()`, `MatView()`, `VecLoad()`, `MatLoad()`,
    257:           `PetscFileMode`, `PetscViewer`
    258: @*/
    259: PetscErrorCode PetscViewerVTKOpen(MPI_Comm comm, const char name[], PetscFileMode type, PetscViewer *vtk)
    260: {
    261:   PetscFunctionBegin;
    262:   PetscCall(PetscViewerCreate(comm, vtk));
    263:   PetscCall(PetscViewerSetType(*vtk, PETSCVIEWERVTK));
    264:   PetscCall(PetscViewerFileSetMode(*vtk, type));
    265:   PetscCall(PetscViewerFileSetName(*vtk, name));
    266:   PetscFunctionReturn(PETSC_SUCCESS);
    267: }

    269: /*@C
    270:   PetscViewerVTKFWrite - write binary data preceded by 32-bit int length (in bytes), does not do byte swapping.

    272:   Logically Collective

    274:   Input Parameters:
    275: + viewer - logically collective viewer, data written from rank 0
    276: . fp     - file pointer valid on rank 0
    277: . data   - data pointer valid on rank 0
    278: . n      - number of data items
    279: - dtype  - data type

    281:   Level: developer

    283:   Note:
    284:   If `PetscScalar` is `__float128` then the binary files are written in double precision

    286: .seealso: [](sec_viewers), `PETSCVIEWERVTK`, `DMDAVTKWriteAll()`, `DMPlexVTKWriteAll()`, `PetscViewerPushFormat()`, `PetscViewerVTKOpen()`, `PetscBinaryWrite()`
    287: @*/
    288: PetscErrorCode PetscViewerVTKFWrite(PetscViewer viewer, FILE *fp, const void *data, PetscCount n, MPI_Datatype dtype)
    289: {
    290:   PetscMPIInt  rank;
    291:   MPI_Datatype vdtype = dtype;
    292: #if defined(PETSC_USE_REAL___FLOAT128)
    293:   double *tmp;
    294: #endif

    296:   PetscFunctionBegin;
    297:   PetscCheck(n >= 0, PetscObjectComm((PetscObject)viewer), PETSC_ERR_ARG_OUTOFRANGE, "Trying to write a negative amount of data %" PetscCount_FMT, n);
    298:   if (!n) PetscFunctionReturn(PETSC_SUCCESS);
    299:   PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)viewer), &rank));
    300:   if (rank == 0) {
    301:     size_t      count;
    302:     PetscMPIInt dsize;
    303:     PetscInt64  bytes;

    305: #if defined(PETSC_USE_REAL___FLOAT128)
    306:     if (dtype == MPIU___FLOAT128) {
    307:       PetscReal *ttmp = (PetscReal *)data;

    309:       PetscCall(PetscMalloc1(n, &tmp));
    310:       for (PetscCount i = 0; i < n; i++) tmp[i] = ttmp[i];
    311:       data   = (void *)tmp;
    312:       vdtype = MPI_DOUBLE;
    313:     }
    314: #endif
    315:     PetscCallMPI(MPI_Type_size(vdtype, &dsize));
    316:     bytes = (PetscInt64)dsize * n;

    318:     count = fwrite(&bytes, sizeof(bytes), 1, fp);
    319:     PetscCheck(count == 1, PETSC_COMM_SELF, PETSC_ERR_FILE_WRITE, "Error writing byte count");
    320:     count = fwrite(data, dsize, (size_t)n, fp);
    321:     PetscCheck((PetscCount)count == n, PETSC_COMM_SELF, PETSC_ERR_FILE_WRITE, "Wrote %" PetscCount_FMT "/%" PetscCount_FMT " array members of size %d", (PetscCount)count, n, dsize);
    322: #if defined(PETSC_USE_REAL___FLOAT128)
    323:     if (dtype == MPIU___FLOAT128) PetscCall(PetscFree(tmp));
    324: #endif
    325:   }
    326:   PetscFunctionReturn(PETSC_SUCCESS);
    327: }