Date: 2015-10-02T21:58:32+00:00

Actual source code: vtkv.c
petsc-3.6.2 2015-10-02
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      1: #include <../src/sys/classes/viewer/impls/vtk/vtkvimpl.h> /*I "petscviewer.h" I*/

      3: /*MC
      4:     PetscViewerVTKWriteFunction - functional form used to provide 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:   PetscViewerVTKAddField()
     17: M*/

     21: /*@C
     22:    PetscViewerVTKAddField - Add a field to the viewer

     24:    Collective

     26:    Input Arguments:
     27: + viewer - VTK viewer
     28: . dm - DM on which Vec lives
     29: . PetscViewerVTKWriteFunction - function to write this Vec
     30: . fieldtype - Either PETSC_VTK_POINT_FIELD or PETSC_VTK_CELL_FIELD
     31: - vec - Vec 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 adding it.

     38: .seealso: PetscViewerVTKOpen(), DMDAVTKWriteAll(), PetscViewerVTKWriteFunction
     39: @*/
     40: PetscErrorCode PetscViewerVTKAddField(PetscViewer viewer,PetscObject dm,PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject,PetscViewer),PetscViewerVTKFieldType fieldtype,PetscObject vec)
     41: {

     48:   PetscUseMethod(viewer,"PetscViewerVTKAddField_C",(PetscViewer,PetscObject,PetscErrorCode (*)(PetscObject,PetscViewer),PetscViewerVTKFieldType,PetscObject),(viewer,dm,PetscViewerVTKWriteFunction,fieldtype,vec));
     49:   return(0);
     50: }

     54: static PetscErrorCode PetscViewerDestroy_VTK(PetscViewer viewer)
     55: {
     56:   PetscViewer_VTK *vtk = (PetscViewer_VTK*)viewer->data;
     57:   PetscErrorCode  ierr;

     60:   PetscFree(vtk->filename);
     61:   PetscFree(vtk);
     62:   PetscObjectComposeFunction((PetscObject)viewer,"PetscViewerFileSetName_C",NULL);
     63:   PetscObjectComposeFunction((PetscObject)viewer,"PetscViewerFileSetMode_C",NULL);
     64:   PetscObjectComposeFunction((PetscObject)viewer,"PetscViewerVTKAddField_C",NULL);
     65:   return(0);
     66: }

     70: static PetscErrorCode PetscViewerFlush_VTK(PetscViewer viewer)
     71: {
     72:   PetscViewer_VTK          *vtk = (PetscViewer_VTK*)viewer->data;
     73:   PetscErrorCode           ierr;
     74:   PetscViewerVTKObjectLink link,next;

     77:   if (vtk->link && (!vtk->dm || !vtk->write)) SETERRQ(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_WRONGSTATE,"No fields or no grid");
     78:   if (vtk->write) {(*vtk->write)(vtk->dm,viewer);}
     79:   for (link=vtk->link; link; link=next) {
     80:     next = link->next;
     81:     PetscObjectDestroy(&link->vec);
     82:     PetscFree(link);
     83:   }
     84:   PetscObjectDestroy(&vtk->dm);
     85:   vtk->write = NULL;
     86:   return(0);
     87: }

     91: PetscErrorCode  PetscViewerFileSetName_VTK(PetscViewer viewer,const char name[])
     92: {
     93:   PetscViewer_VTK *vtk = (PetscViewer_VTK*)viewer->data;
     94:   PetscErrorCode  ierr;
     95:   PetscBool       isvtk,isvts,isvtu,isvtr;
     96:   size_t          len;

     99:   PetscViewerFlush(viewer);
    100:   PetscFree(vtk->filename);
    101:   PetscStrlen(name,&len);
    102:   PetscStrcasecmp(name+len-4,".vtk",&isvtk);
    103:   PetscStrcasecmp(name+len-4,".vts",&isvts);
    104:   PetscStrcasecmp(name+len-4,".vtu",&isvtu);
    105:   PetscStrcasecmp(name+len-4,".vtr",&isvtr);
    106:   if (isvtk) {
    107:     if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_ASCII_VTK);}
    108:     if (viewer->format != PETSC_VIEWER_ASCII_VTK) SETERRQ2(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_INCOMP,"Cannot use file '%s' with format %s, should have '.vtk' extension",name,PetscViewerFormats[viewer->format]);
    109:   } else if (isvts) {
    110:     if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_VTK_VTS);}
    111:     if (viewer->format != PETSC_VIEWER_VTK_VTS) SETERRQ2(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_INCOMP,"Cannot use file '%s' with format %s, should have '.vts' extension",name,PetscViewerFormats[viewer->format]);
    112:   } else if (isvtu) {
    113:     if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_VTK_VTU);}
    114:     if (viewer->format != PETSC_VIEWER_VTK_VTU) SETERRQ2(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_INCOMP,"Cannot use file '%s' with format %s, should have '.vtu' extension",name,PetscViewerFormats[viewer->format]);
    115:   } else if (isvtr) {
    116:     if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_VTK_VTR);}
    117:     if (viewer->format != PETSC_VIEWER_VTK_VTR) SETERRQ2(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_INCOMP,"Cannot use file '%s' with format %s, should have '.vtr' extension",name,PetscViewerFormats[viewer->format]);
    118:   } else SETERRQ1(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_UNKNOWN_TYPE,"File '%s' has unrecognized extension",name);
    119:   PetscStrallocpy(name,&vtk->filename);
    120:   return(0);
    121: }

    125: PetscErrorCode  PetscViewerFileSetMode_VTK(PetscViewer viewer,PetscFileMode type)
    126: {
    127:   PetscViewer_VTK *vtk = (PetscViewer_VTK*)viewer->data;

    131:   vtk->btype = type;
    132:   return(0);
    133: }

    137: PetscErrorCode  PetscViewerVTKAddField_VTK(PetscViewer viewer,PetscObject dm,PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject,PetscViewer),PetscViewerVTKFieldType fieldtype,PetscObject vec)
    138: {
    139:   PetscViewer_VTK          *vtk = (PetscViewer_VTK*)viewer->data;
    140:   PetscViewerVTKObjectLink link, tail = vtk->link;
    141:   PetscErrorCode           ierr;

    144:   if (vtk->dm) {
    145:     if (dm != vtk->dm) SETERRQ(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_INCOMP,"Cannot write a field from more than one grid to the same VTK file");
    146:   }
    147:   vtk->dm    = dm;
    148:   vtk->write = PetscViewerVTKWriteFunction;
    149:   PetscMalloc(sizeof(struct _n_PetscViewerVTKObjectLink),&link);
    150:   link->ft   = fieldtype;
    151:   link->vec  = vec;
    152:   link->next = NULL;
    153:   /* Append to list */
    154:   if (tail) {
    155:     while (tail->next) tail = tail->next;
    156:     tail->next = link;
    157:   } else vtk->link = link;
    158:   return(0);
    159: }

    163: PETSC_EXTERN PetscErrorCode PetscViewerCreate_VTK(PetscViewer v)
    164: {
    165:   PetscViewer_VTK *vtk;
    166:   PetscErrorCode  ierr;

    169:   PetscNewLog(v,&vtk);

    171:   v->data         = (void*)vtk;
    172:   v->ops->destroy = PetscViewerDestroy_VTK;
    173:   v->ops->flush   = PetscViewerFlush_VTK;
    174:   vtk->btype      = (PetscFileMode) -1;
    175:   vtk->filename   = 0;

    177:   PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileSetName_C",PetscViewerFileSetName_VTK);
    178:   PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileSetMode_C",PetscViewerFileSetMode_VTK);
    179:   PetscObjectComposeFunction((PetscObject)v,"PetscViewerVTKAddField_C",PetscViewerVTKAddField_VTK);
    180:   return(0);
    181: }

    185: /*@C
    186:    PetscViewerVTKOpen - Opens a file for VTK output.

    188:    Collective on MPI_Comm

    190:    Input Parameters:
    191: +  comm - MPI communicator
    192: .  name - name of file
    193: -  type - type of file
    194: $    FILE_MODE_WRITE - create new file for binary output
    195: $    FILE_MODE_READ - open existing file for binary input (not currently supported)
    196: $    FILE_MODE_APPEND - open existing file for binary output (not currently supported)

    198:    Output Parameter:
    199: .  vtk - PetscViewer for VTK input/output to use with the specified file

    201:    Level: beginner

    203:    Note:
    204:    This PetscViewer should be destroyed with PetscViewerDestroy().

    206:    Concepts: VTK files
    207:    Concepts: PetscViewer^creating

    209: .seealso: PetscViewerASCIIOpen(), PetscViewerSetFormat(), PetscViewerDestroy(),
    210:           VecView(), MatView(), VecLoad(), MatLoad(),
    211:           PetscFileMode, PetscViewer
    212: @*/
    213: PetscErrorCode PetscViewerVTKOpen(MPI_Comm comm,const char name[],PetscFileMode type,PetscViewer *vtk)
    214: {

    218:   PetscViewerCreate(comm,vtk);
    219:   PetscViewerSetType(*vtk,PETSCVIEWERVTK);
    220:   PetscViewerFileSetMode(*vtk,type);
    221:   PetscViewerFileSetName(*vtk,name);
    222:   return(0);
    223: }

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

    230:    Logically collective on PetscViewer

    232:    Input Parameters:
    233: +  viewer - logically collective viewer, data written from rank 0
    234: .  fp - file pointer valid on rank 0
    235: .  data - data pointer valid on rank 0
    236: .  n - number of data items
    237: -  dtype - data type

    239:    Level: developer

    241:    Notes: If PetscScalar is __float128 then the binary files are written in double precision

    243:    Concepts: VTK files
    244:    Concepts: PetscViewer^creating

    246: .seealso: DMDAVTKWriteAll(), DMComplexVTKWriteAll(), PetscViewerSetFormat(), PetscViewerVTKOpen(), PetscBinaryWrite()
    247: @*/
    248: PetscErrorCode PetscViewerVTKFWrite(PetscViewer viewer,FILE *fp,const void *data,PetscInt n,PetscDataType dtype)
    249: {
    251:   PetscMPIInt    rank;
    252: #if defined(PETSC_USE_REAL___FLOAT128)
    253:   PetscInt       i;
    254:   double         *tmp = NULL;
    255:   PetscReal      *ttmp = (PetscReal*)data;
    256: #endif

    259:   if (n < 0) SETERRQ1(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_OUTOFRANGE,"Trying to write a negative amount of data %D",n);
    260:   if (!n) return(0);
    261:   MPI_Comm_rank(PetscObjectComm((PetscObject)viewer),&rank);
    262:   if (!rank) {
    263:     size_t      count;
    264:     PetscInt    size;
    265:     PetscVTKInt bytes;
    266:     switch (dtype) {
    267:     case PETSC_DOUBLE:
    268:       size = sizeof(double);
    269:       break;
    270:     case PETSC_FLOAT:
    271:       size = sizeof(float);
    272:       break;
    273: #if defined(PETSC_USE_REAL___FLOAT128)
    274:     case PETSC___FLOAT128:
    275:       size = sizeof(double);
    276:       PetscMalloc1(n,&tmp);
    277:       for (i=0; i<n; i++) tmp[i] = ttmp[i];
    278:       data = (void*) tmp;
    279:       break;
    280: #endif
    281:     case PETSC_INT:
    282:       size = sizeof(PetscInt);
    283:       break;
    284:     case PETSC_ENUM:
    285:       size = sizeof(PetscEnum);
    286:       break;
    287:     case PETSC_CHAR:
    288:       size = sizeof(char);
    289:       break;
    290:     default: SETERRQ(PetscObjectComm((PetscObject)viewer),PETSC_ERR_SUP,"Data type not supported");
    291:     }
    292:     bytes = PetscVTKIntCast(size*n);

    294:     count = fwrite(&bytes,sizeof(int),1,fp);
    295:     if (count != 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_WRITE,"Error writing byte count");
    296:     count = fwrite(data,size,(size_t)n,fp);
    297:     if ((PetscInt)count != n) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_FILE_WRITE,"Wrote %D/%D array members of size %D",(PetscInt)count,n,(PetscInt)size);
    298: #if defined(PETSC_USE_REAL___FLOAT128)
    299:     PetscFree(tmp);
    300: #endif
    301:   }
    302:   return(0);
    303: }