/[escript]/branches/arrayview_from_1695_trunk/finley/src/Mesh_read.c
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Revision 616 - (hide annotations)
Wed Mar 22 02:46:56 2006 UTC (13 years, 2 months ago) by elspeth
Original Path: trunk/finley/src/Mesh_read.c
File MIME type: text/plain
File size: 8577 byte(s)
Copyright added to more source files.

1 jgs 150 /*
2 elspeth 616 ************************************************************
3     * Copyright 2006 by ACcESS MNRF *
4     * *
5     * http://www.access.edu.au *
6     * Primary Business: Queensland, Australia *
7     * Licensed under the Open Software License version 3.0 *
8     * http://www.opensource.org/licenses/osl-3.0.php *
9     * *
10     ************************************************************
11 jgs 150 */
12    
13 jgs 82 /**************************************************************/
14    
15     /* Finley: read mesh */
16    
17     /**************************************************************/
18    
19     /* Author: gross@access.edu.au */
20     /* Version: $Id$ */
21    
22     /**************************************************************/
23    
24     #include "Mesh.h"
25    
26     /**************************************************************/
27    
28     /* reads a mesh from a Finley file of name fname */
29    
30 jgs 123 Finley_Mesh* Finley_Mesh_read(char* fname,index_t order) {
31 jgs 82
32 jgs 123 dim_t numNodes, numDim, numEle, i0, i1;
33 jgs 150 char name[LenString_MAX],element_type[LenString_MAX],frm[20];
34     char error_msg[LenErrorMsg_MAX];
35 jgs 82 Finley_NodeFile *nodes_p=NULL;
36     double time0=Finley_timer();
37 jgs 150 Finley_resetError();
38 jgs 82
39     /* get file handle */
40     FILE * fileHandle_p = fopen(fname, "r");
41     if (fileHandle_p==NULL) {
42 jgs 150 sprintf(error_msg,"%s: Opening file %s for reading failed.",__FILE__,fname);
43     Finley_setError(IO_ERROR,error_msg);
44 jgs 82 return NULL;
45     }
46    
47     /* read header */
48 jgs 150 sprintf(frm,"%%%d[^\n]",LenString_MAX-1);
49     fscanf(fileHandle_p, frm, name);
50 jgs 82 /* get the nodes */
51    
52     fscanf(fileHandle_p, "%1d%*s %d\n", &numDim,&numNodes);
53     nodes_p=Finley_NodeFile_alloc(numDim);
54 jgs 150 if (! Finley_noError()) return NULL;
55 jgs 82 Finley_NodeFile_allocTable(nodes_p, numNodes);
56 jgs 150 if (! Finley_noError()) return NULL;
57 jgs 82
58     if (1 == numDim) {
59     for (i0 = 0; i0 < numNodes; i0++)
60     fscanf(fileHandle_p, "%d %d %d %le\n", &nodes_p->Id[i0],
61     &nodes_p->degreeOfFreedom[i0], &nodes_p->Tag[i0],
62     &nodes_p->Coordinates[INDEX2(0,i0,numDim)]);
63     } else if (2 == numDim) {
64     for (i0 = 0; i0 < numNodes; i0++)
65     fscanf(fileHandle_p, "%d %d %d %le %le\n", &nodes_p->Id[i0],
66     &nodes_p->degreeOfFreedom[i0], &nodes_p->Tag[i0],
67     &nodes_p->Coordinates[INDEX2(0,i0,numDim)],
68     &nodes_p->Coordinates[INDEX2(1,i0,numDim)]);
69     } else if (3 == numDim) {
70     for (i0 = 0; i0 < numNodes; i0++)
71     fscanf(fileHandle_p, "%d %d %d %le %le %le\n", &nodes_p->Id[i0],
72     &nodes_p->degreeOfFreedom[i0], &nodes_p->Tag[i0],
73     &nodes_p->Coordinates[INDEX2(0,i0,numDim)],
74     &nodes_p->Coordinates[INDEX2(1,i0,numDim)],
75     &nodes_p->Coordinates[INDEX2(2,i0,numDim)]);
76     } /* if else else */
77    
78     /* get the element type */
79    
80     fscanf(fileHandle_p, "%s %d\n", element_type, &numEle);
81     ElementTypeId typeID=Finley_RefElement_getTypeId(element_type);
82     if (typeID==NoType) {
83 jgs 150 sprintf(error_msg,"%s :Unidentified element type %s",__FILE__,element_type);
84     Finley_setError(VALUE_ERROR,error_msg);
85 jgs 82 return NULL;
86     }
87    
88     /* allocate mesh */
89    
90     Finley_Mesh * mesh_p =Finley_Mesh_alloc(name,numDim,order);
91 jgs 150 if (! Finley_noError()) return NULL;
92 jgs 82 mesh_p->Nodes=nodes_p;
93    
94     /* read the elements */
95     mesh_p->Elements=Finley_ElementFile_alloc(typeID,mesh_p->order);
96     Finley_ElementFile_allocTable(mesh_p->Elements, numEle);
97 jgs 123 mesh_p->Elements->minColor=0;
98     mesh_p->Elements->maxColor=numEle-1;
99 jgs 82 for (i0 = 0; i0 < numEle; i0++) {
100     fscanf(fileHandle_p, "%d %d", &mesh_p->Elements->Id[i0], &mesh_p->Elements->Tag[i0]);
101     mesh_p->Elements->Color[i0]=i0;
102     for (i1 = 0; i1 < mesh_p->Elements->ReferenceElement->Type->numNodes; i1++) {
103 jgs 126 fscanf(fileHandle_p, " %d",
104 jgs 82 &mesh_p->Elements->Nodes[INDEX2(i1, i0, mesh_p->Elements->ReferenceElement->Type->numNodes)]);
105     } /* for i1 */
106     fscanf(fileHandle_p, "\n");
107     } /* for i0 */
108    
109     /* get the face elements */
110     fscanf(fileHandle_p, "%s %d\n", element_type, &numEle);
111     ElementTypeId faceTypeID=Finley_RefElement_getTypeId(element_type);
112     if (faceTypeID==NoType) {
113 jgs 150 sprintf(error_msg,"%s :Unidentified element type %s for face elements",__FILE__,element_type);
114     Finley_setError(VALUE_ERROR,error_msg);
115 jgs 82 return NULL;
116     }
117     mesh_p->FaceElements=Finley_ElementFile_alloc(faceTypeID,mesh_p->order);
118     Finley_ElementFile_allocTable(mesh_p->FaceElements, numEle);
119 jgs 123 mesh_p->FaceElements->minColor=0;
120     mesh_p->FaceElements->maxColor=numEle-1;
121 jgs 82 for (i0 = 0; i0 < numEle; i0++) {
122     fscanf(fileHandle_p, "%d %d", &mesh_p->FaceElements->Id[i0], &mesh_p->FaceElements->Tag[i0]);
123     mesh_p->FaceElements->Color[i0]=i0;
124     for (i1 = 0; i1 < mesh_p->FaceElements->ReferenceElement->Type->numNodes; i1++) {
125 jgs 126 fscanf(fileHandle_p, " %d",
126 jgs 82 &mesh_p->FaceElements->Nodes[INDEX2(i1, i0, mesh_p->FaceElements->ReferenceElement->Type->numNodes)]);
127     } /* for i1 */
128     fscanf(fileHandle_p, "\n");
129     } /* for i0 */
130    
131     /* get the Contact face element */
132     fscanf(fileHandle_p, "%s %d\n", element_type, &numEle);
133     ElementTypeId contactTypeID=Finley_RefElement_getTypeId(element_type);
134     if (contactTypeID==NoType) {
135 jgs 150 sprintf(error_msg,"%s: Unidentified element type %s for contact elements",__FILE__,element_type);
136     Finley_setError(VALUE_ERROR,error_msg);
137 jgs 82 return NULL;
138     }
139     mesh_p->ContactElements=Finley_ElementFile_alloc(contactTypeID,mesh_p->order);
140     Finley_ElementFile_allocTable(mesh_p->ContactElements, numEle);
141 jgs 123 mesh_p->ContactElements->minColor=0;
142     mesh_p->ContactElements->maxColor=numEle-1;
143 jgs 82 for (i0 = 0; i0 < numEle; i0++) {
144     fscanf(fileHandle_p, "%d %d", &mesh_p->ContactElements->Id[i0], &mesh_p->ContactElements->Tag[i0]);
145     mesh_p->ContactElements->Color[i0]=i0;
146     for (i1 = 0; i1 < mesh_p->ContactElements->ReferenceElement->Type->numNodes; i1++) {
147 jgs 126 fscanf(fileHandle_p, " %d",
148 jgs 82 &mesh_p->ContactElements->Nodes[INDEX2(i1, i0, mesh_p->ContactElements->ReferenceElement->Type->numNodes)]);
149     } /* for i1 */
150     fscanf(fileHandle_p, "\n");
151     } /* for i0 */
152    
153     /* get the nodal element */
154     fscanf(fileHandle_p, "%s %d\n", element_type, &numEle);
155     ElementTypeId pointTypeID=Finley_RefElement_getTypeId(element_type);
156     if (pointTypeID==NoType) {
157 jgs 150 sprintf(error_msg,"%s: Unidentified element type %s for points",__FILE__,element_type);
158     Finley_setError(VALUE_ERROR,error_msg);
159 jgs 82 return NULL;
160     }
161     mesh_p->Points=Finley_ElementFile_alloc(pointTypeID,mesh_p->order);
162    
163     Finley_ElementFile_allocTable(mesh_p->Points, numEle);
164 jgs 123 mesh_p->Points->minColor=0;
165     mesh_p->Points->maxColor=numEle-1;
166 jgs 82 for (i0 = 0; i0 < numEle; i0++) {
167     fscanf(fileHandle_p, "%d %d", &mesh_p->Points->Id[i0], &mesh_p->Points->Tag[i0]);
168     mesh_p->Points->Color[i0]=i0;
169     for (i1 = 0; i1 < mesh_p->Points->ReferenceElement->Type->numNodes; i1++) {
170 jgs 126 fscanf(fileHandle_p, " %d",
171 jgs 82 &mesh_p->Points->Nodes[INDEX2(i1, i0, mesh_p->Points->ReferenceElement->Type->numNodes)]);
172     } /* for i1 */
173     fscanf(fileHandle_p, "\n");
174     } /* for i0 */
175    
176    
177     /* close file */
178    
179     fclose(fileHandle_p);
180    
181     /* resolve id's : */
182 jgs 126
183 jgs 82 Finley_Mesh_resolveNodeIds(mesh_p);
184 jgs 126
185 jgs 82 /* rearrange elements: */
186 jgs 126
187 jgs 82 Finley_Mesh_prepare(mesh_p);
188 jgs 126
189 jgs 82 /* that's it */
190 jgs 149 #ifdef Finley_TRACE
191 jgs 82 printf("timing: reading mesh: %.4e sec\n",Finley_timer()-time0);
192 jgs 149 #endif
193 jgs 150 if (! Finley_noError()) Finley_Mesh_dealloc(mesh_p);
194 jgs 82 return mesh_p;
195     }
196     /*
197     * $Log$
198 jgs 150 * Revision 1.5 2005/09/15 03:44:22 jgs
199     * Merge of development branch dev-02 back to main trunk on 2005-09-15
200     *
201 jgs 149 * Revision 1.4 2005/09/01 03:31:36 jgs
202     * Merge of development branch dev-02 back to main trunk on 2005-09-01
203     *
204 jgs 150 * Revision 1.3.2.3 2005/09/08 08:28:39 gross
205     * some cleanup in savevtk
206     *
207     * Revision 1.3.2.2 2005/09/07 06:26:19 gross
208     * the solver from finley are put into the standalone package paso now
209     *
210 jgs 149 * Revision 1.3.2.1 2005/08/24 02:02:18 gross
211     * timing output switched off. solver output can be swiched through getSolution(verbose=True) now.
212     *
213 jgs 126 * Revision 1.3 2005/07/22 03:53:08 jgs
214     * Merge of development branch back to main trunk on 2005-07-22
215     *
216 jgs 123 * Revision 1.2 2005/07/08 04:07:54 jgs
217     * Merge of development branch back to main trunk on 2005-07-08
218 jgs 82 *
219 jgs 126 * Revision 1.1.1.1.2.2 2005/07/18 10:34:54 gross
220     * some informance improvements when reading meshes
221     *
222 jgs 123 * Revision 1.1.1.1.2.1 2005/06/29 02:34:53 gross
223     * some changes towards 64 integers in finley
224     *
225     * Revision 1.1.1.1 2004/10/26 06:53:57 jgs
226     * initial import of project esys2
227     *
228 jgs 82 * Revision 1.1.1.1 2004/06/24 04:00:40 johng
229     * Initial version of eys using boost-python.
230     *
231     *
232     */
233    

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