/[escript]/trunk/esys2/finley/src/finleyC/Mesh_saveDX.c
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Annotation of /trunk/esys2/finley/src/finleyC/Mesh_saveDX.c

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Revision 82 - (hide annotations)
Tue Oct 26 06:53:54 2004 UTC (15 years, 1 month ago) by jgs
File MIME type: text/plain
File size: 8007 byte(s)
Initial revision

1 jgs 82 /* $Id$ */
2    
3     /**************************************************************/
4    
5     /* writes data and mesh in an opendx file */
6    
7     /**************************************************************/
8    
9     /* Copyrights by ACcESS, Australia 2004 */
10     /* Author: Lutz Gross, gross@access.edu.au */
11    
12     /**************************************************************/
13    
14     #include "Finley.h"
15     #include "Common.h"
16     #include "Mesh.h"
17     #include "escript/Data/DataC.h"
18    
19     void Finley_Mesh_saveDX(const char * filename_p, Finley_Mesh *mesh_p, escriptDataC* data_p) {
20     /* if there is no mesh we just return */
21     if (mesh_p==NULL) return;
22     /* some tables needed for reordering */
23     int resort[6][9]={
24     {0,1}, /* line */
25     {0,1,2}, /* triagle */
26     {0,1,2,3}, /* tetrahedron */
27     {0,3,1,2}, /* quadrilateral */
28     {3,0,7,4,2,1,6,5}, /* hexahedron */
29     };
30     Finley_ElementFile* elements=NULL;
31     char elemTypeStr[32];
32     int i,j,k,numDXNodesPerElement,*resortIndex,isCellCentered,nodetype;
33     double* values,rtmp;
34     int nDim = mesh_p->Nodes->numDim;
35     /* open the file and check handel */
36     FILE * fileHandle_p = fopen(filename_p, "w");
37     if (fileHandle_p==NULL) {
38     Finley_ErrorCode=IO_ERROR;
39     sprintf(Finley_ErrorMsg,"File %s could not be opened for writing.",filename_p);
40     return;
41     }
42     /* positions */
43     fprintf(fileHandle_p, "object 1 class array type float rank 1 shape %d items %d data follows\n",
44     nDim, mesh_p->Nodes->reducedNumNodes);
45     for (i = 0; i < mesh_p->Nodes->numNodes; i++) {
46     if (mesh_p->Nodes->toReduced[i]>=0) {
47     fprintf(fileHandle_p, "%e", mesh_p->Nodes->Coordinates[INDEX2(0, i, nDim)]);
48     for (j = 1; j < nDim; j++) fprintf(fileHandle_p, " %f",mesh_p->Nodes->Coordinates[INDEX2(j, i, nDim)]);
49     fprintf(fileHandle_p, "\n");
50     }
51     }
52     /* connections */
53     /* get a pointer to the relevant mesh component */
54     if (isEmpty(data_p)) {
55     elements=mesh_p->Elements;
56     } else {
57     switch(getFunctionSpaceType(data_p)) {
58     case(FINLEY_DEGREES_OF_FREEDOM):
59     nodetype=FINLEY_DEGREES_OF_FREEDOM;
60     case(FINLEY_REDUCED_DEGREES_OF_FREEDOM):
61     nodetype=FINLEY_REDUCED_DEGREES_OF_FREEDOM;
62     case(FINLEY_NODES):
63     nodetype=FINLEY_NODES;
64     isCellCentered=FALSE;
65     elements=mesh_p->Elements;
66     break;
67     case(FINLEY_ELEMENTS):
68     isCellCentered=TRUE;
69     elements=mesh_p->Elements;
70     break;
71     case(FINLEY_FACE_ELEMENTS):
72     isCellCentered=TRUE;
73     elements=mesh_p->FaceElements;
74     break;
75     case(FINLEY_POINTS):
76     isCellCentered=TRUE;
77     elements=mesh_p->Points;
78     break;
79     case(FINLEY_CONTACT_ELEMENTS_1):
80     case(FINLEY_CONTACT_ELEMENTS_2):
81     isCellCentered=TRUE;
82     elements=mesh_p->ContactElements;
83     break;
84     default:
85     Finley_ErrorCode=TYPE_ERROR;
86     sprintf(Finley_ErrorMsg,"Finley does not know anything about function space type %d",getFunctionSpaceType(data_p));
87     break;
88     }
89     }
90     /* if no element table is present jump over the connection table */
91     if (elements!=NULL) {
92     ElementTypeId TypeId = elements->ReferenceElement->Type->TypeId;
93     if (TypeId==Line2 || TypeId==Line3 || TypeId==Line4 ) {
94     numDXNodesPerElement=2;
95     resortIndex=resort[0];
96     strcpy(elemTypeStr, "lines");
97     } else if (TypeId==Tri3 || TypeId==Tri6 || TypeId==Tri9 || TypeId==Tri10 ) {
98     numDXNodesPerElement = 3;
99     resortIndex=resort[1];
100     strcpy(elemTypeStr, "triangles");
101     } else if (TypeId==Rec4 || TypeId==Rec8 || TypeId==Rec9 || TypeId==Rec12 || TypeId==Rec16 ) {
102     numDXNodesPerElement = 4;
103     resortIndex=resort[3];
104     strcpy(elemTypeStr, "quads");
105     } else if (TypeId==Tet4 || TypeId==Tet10 || TypeId==Tet16 ) {
106     numDXNodesPerElement = 4;
107     resortIndex=resort[2];
108     strcpy(elemTypeStr, "tetrahedra");
109     } else if (TypeId==Hex8 || TypeId==Hex20 || TypeId==Hex32 ) {
110     numDXNodesPerElement = 8;
111     resortIndex=resort[4];
112     strcpy(elemTypeStr, "cubes");
113     } else {
114     Finley_ErrorCode=VALUE_ERROR;
115     sprintf(Finley_ErrorMsg, "Element type %s is not supported by DX",elements->ReferenceElement->Type->Name);
116     return;
117     }
118     int NN=elements->ReferenceElement->Type->numNodes;
119     fprintf(fileHandle_p, "object 2 class array type int rank 1 shape %d items %d data follows\n",numDXNodesPerElement, elements->numElements);
120     for (i = 0; i < elements->numElements; i++) {
121     fprintf(fileHandle_p,"%d",mesh_p->Nodes->toReduced[mesh_p->Elements->Nodes[INDEX2(resortIndex[0], i, NN)]]);
122     for (j = 1; j < numDXNodesPerElement; j++) {
123     fprintf(fileHandle_p," %d",mesh_p->Nodes->toReduced[mesh_p->Elements->Nodes[INDEX2(resortIndex[j], i, NN)]]);
124     }
125     fprintf(fileHandle_p, "\n");
126     }
127     fprintf(fileHandle_p, "attribute \"element type\" string \"%s\"\n",elemTypeStr);
128     fprintf(fileHandle_p, "attribute \"ref\" string \"positions\"\n");
129    
130     }
131     /* data */
132     if (!isEmpty(data_p)) {
133     int rank=getDataPointRank(data_p);
134     int* shape=getDataPointShape(data_p);
135     int nComp=getDataPointSize(data_p);
136     fprintf(fileHandle_p, "object 3 class array type float rank %d ", rank);
137     if (0 < rank) {
138     fprintf(fileHandle_p, "shape ");
139     for (i = 0; i < rank; i++) fprintf(fileHandle_p, "%d ", shape[i]);
140     }
141     if (isCellCentered) {
142     int numPointsPerSample=elements->ReferenceElement->numQuadNodes;
143     if (numPointsPerSample) {
144     fprintf(fileHandle_p, "items %d data follows\n", elements->numElements);
145     for (i=0;i<elements->numElements;i++) {
146     values=getSampleData(data_p,i);
147     for (k=0;k<nComp;k++) {
148     rtmp=0.;
149     for (j=0;j<numPointsPerSample;j++) rtmp+=values[INDEX2(k,j,nComp)];
150     fprintf(fileHandle_p, " %f", rtmp/numPointsPerSample);
151     }
152     fprintf(fileHandle_p, "\n");
153     }
154     fprintf(fileHandle_p, "attribute \"dep\" string \"connections\"\n");
155     }
156     } else {
157     fprintf(fileHandle_p, "items %d data follows\n", mesh_p->Nodes->reducedNumNodes);
158     for (i=0;i<mesh_p->Nodes->numNodes;i++) {
159     if (mesh_p->Nodes->toReduced[i]>=0) {
160     switch (nodetype) {
161     case(FINLEY_DEGREES_OF_FREEDOM):
162     values=getSampleData(data_p,mesh_p->Nodes->degreeOfFreedom[i]);
163     break;
164     case(FINLEY_REDUCED_DEGREES_OF_FREEDOM):
165     values=getSampleData(data_p,mesh_p->Nodes->reducedDegreeOfFreedom[i]);
166     break;
167     case(FINLEY_NODES):
168     values=getSampleData(data_p,i);
169     break;
170     }
171     }
172     for (k=0;k<nComp;k++) fprintf(fileHandle_p, " %f", values[k]);
173     fprintf(fileHandle_p, "\n");
174     }
175     fprintf(fileHandle_p, "attribute \"dep\" string \"positions\"\n");
176     }
177     }
178    
179     /* and finish it up */
180     fprintf(fileHandle_p, "object 4 class field\n");
181     fprintf(fileHandle_p, "component \"positions\" value 1\n");
182     if (elements!=NULL) fprintf(fileHandle_p, "component \"connections\" value 2\n");
183     if (!isEmpty(data_p)) fprintf(fileHandle_p, "component \"data\" value 3\n");
184     fprintf(fileHandle_p, "end\n");
185     /* close the file */
186     fclose(fileHandle_p);
187     return;
188     }
189    
190     /*
191     * $Log$
192     * Revision 1.1 2004/10/26 06:53:57 jgs
193     * Initial revision
194     *
195     * Revision 1.1 2004/07/27 08:27:11 gross
196     * Finley: saveDX added: now it is possible to write data on boundary and contact elements
197     *
198     */

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