Actual source code: vtkv.c
petsc-3.4.5 2014-06-29
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;
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: if (isvtk) {
106: if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_ASCII_VTK);}
107: 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]);
108: } else if (isvts) {
109: if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_VTK_VTS);}
110: 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]);
111: } else if (isvtu) {
112: if (viewer->format == PETSC_VIEWER_DEFAULT) {PetscViewerSetFormat(viewer,PETSC_VIEWER_VTK_VTU);}
113: 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]);
114: } else SETERRQ1(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_UNKNOWN_TYPE,"File '%s' has unrecognized extension",name);
115: PetscStrallocpy(name,&vtk->filename);
116: return(0);
117: }
121: PetscErrorCode PetscViewerFileSetMode_VTK(PetscViewer viewer,PetscFileMode type)
122: {
123: PetscViewer_VTK *vtk = (PetscViewer_VTK*)viewer->data;
127: vtk->btype = type;
128: return(0);
129: }
133: PetscErrorCode PetscViewerVTKAddField_VTK(PetscViewer viewer,PetscObject dm,PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject,PetscViewer),PetscViewerVTKFieldType fieldtype,PetscObject vec)
134: {
135: PetscViewer_VTK *vtk = (PetscViewer_VTK*)viewer->data;
136: PetscViewerVTKObjectLink link, tail = vtk->link;
137: PetscErrorCode ierr;
140: if (vtk->dm) {
141: 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");
142: }
143: vtk->dm = dm;
144: vtk->write = PetscViewerVTKWriteFunction;
145: PetscMalloc(sizeof(struct _n_PetscViewerVTKObjectLink),&link);
146: link->ft = fieldtype;
147: link->vec = vec;
148: link->next = NULL;
149: /* Append to list */
150: if (tail) {
151: while (tail->next) tail = tail->next;
152: tail->next = link;
153: } else vtk->link = link;
154: return(0);
155: }
159: PETSC_EXTERN PetscErrorCode PetscViewerCreate_VTK(PetscViewer v)
160: {
161: PetscViewer_VTK *vtk;
162: PetscErrorCode ierr;
165: PetscNewLog(v,PetscViewer_VTK,&vtk);
167: v->data = (void*)vtk;
168: v->ops->destroy = PetscViewerDestroy_VTK;
169: v->ops->flush = PetscViewerFlush_VTK;
170: vtk->btype = (PetscFileMode) -1;
171: vtk->filename = 0;
173: PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileSetName_C",PetscViewerFileSetName_VTK);
174: PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileSetMode_C",PetscViewerFileSetMode_VTK);
175: PetscObjectComposeFunction((PetscObject)v,"PetscViewerVTKAddField_C",PetscViewerVTKAddField_VTK);
176: return(0);
177: }
181: /*@C
182: PetscViewerVTKOpen - Opens a file for VTK output.
184: Collective on MPI_Comm
186: Input Parameters:
187: + comm - MPI communicator
188: . name - name of file
189: - type - type of file
190: $ FILE_MODE_WRITE - create new file for binary output
191: $ FILE_MODE_READ - open existing file for binary input (not currently supported)
192: $ FILE_MODE_APPEND - open existing file for binary output (not currently supported)
194: Output Parameter:
195: . vtk - PetscViewer for VTK input/output to use with the specified file
197: Level: beginner
199: Note:
200: This PetscViewer should be destroyed with PetscViewerDestroy().
202: Concepts: VTK files
203: Concepts: PetscViewer^creating
205: .seealso: PetscViewerASCIIOpen(), PetscViewerSetFormat(), PetscViewerDestroy(),
206: VecView(), MatView(), VecLoad(), MatLoad(),
207: PetscFileMode, PetscViewer
208: @*/
209: PetscErrorCode PetscViewerVTKOpen(MPI_Comm comm,const char name[],PetscFileMode type,PetscViewer *vtk)
210: {
214: PetscViewerCreate(comm,vtk);
215: PetscViewerSetType(*vtk,PETSCVIEWERVTK);
216: PetscViewerFileSetMode(*vtk,type);
217: PetscViewerFileSetName(*vtk,name);
218: return(0);
219: }
223: /*@C
224: PetscViewerVTKFWrite - write binary data preceded by 32-bit int length (in bytes), does not do byte swapping.
226: Logically collective on PetscViewer
228: Input Parameters:
229: + viewer - logically collective viewer, data written from rank 0
230: . fp - file pointer valid on rank 0
231: . data - data pointer valid on rank 0
232: . n - number of data items
233: - dtype - data type
235: Level: developer
237: Concepts: VTK files
238: Concepts: PetscViewer^creating
240: .seealso: DMDAVTKWriteAll(), DMComplexVTKWriteAll(), PetscViewerSetFormat(), PetscViewerVTKOpen(), PetscBinaryWrite()
241: @*/
242: PetscErrorCode PetscViewerVTKFWrite(PetscViewer viewer,FILE *fp,const void *data,PetscInt n,PetscDataType dtype)
243: {
245: PetscMPIInt rank;
248: if (n < 0) SETERRQ1(PetscObjectComm((PetscObject)viewer),PETSC_ERR_ARG_OUTOFRANGE,"Trying to write a negative amount of data %D",n);
249: if (!n) return(0);
250: MPI_Comm_rank(PetscObjectComm((PetscObject)viewer),&rank);
251: if (!rank) {
252: size_t count;
253: PetscInt size;
254: PetscVTKInt bytes;
255: switch (dtype) {
256: case PETSC_DOUBLE:
257: size = sizeof(double);
258: break;
259: case PETSC_FLOAT:
260: size = sizeof(float);
261: break;
262: case PETSC_INT:
263: size = sizeof(PetscInt);
264: break;
265: case PETSC_ENUM:
266: size = sizeof(PetscEnum);
267: break;
268: case PETSC_CHAR:
269: size = sizeof(char);
270: break;
271: default: SETERRQ(PetscObjectComm((PetscObject)viewer),PETSC_ERR_SUP,"Data type not supported");
272: }
273: bytes = PetscVTKIntCast(size*n);
275: count = fwrite(&bytes,sizeof(int),1,fp);
276: if (count != 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_WRITE,"Error writing byte count");
277: count = fwrite(data,size,(size_t)n,fp);
278: 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);
279: }
280: return(0);
281: }