/[escript]/trunk/finley/src/Mesh_line3.c
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Contents of /trunk/finley/src/Mesh_line3.c

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Revision 123 - (show annotations)
Fri Jul 8 04:08:13 2005 UTC (14 years, 4 months ago) by jgs
Original Path: trunk/esys2/finley/src/finleyC/Mesh_line3.c
File MIME type: text/plain
File size: 4674 byte(s)
Merge of development branch back to main trunk on 2005-07-08

1 /**************************************************************/
2
3 /* Finley: generates rectangular meshes */
4
5 /* Generates numElements[0] mesh with second order elements (Line3) in the interval */
6 /* [0,Length[0]]. order is the desired accuracy of the integration scheme. */
7
8 /**************************************************************/
9
10 /* Copyrights by ACcESS Australia 2003/04 */
11 /* Author: gross@access.edu.au */
12 /* Version: $Id$ */
13
14 /**************************************************************/
15
16 #include "Common.h"
17 #include "Finley.h"
18 #include "Mesh.h"
19 #include "RectangularMesh.h"
20
21 /**************************************************************/
22
23 Finley_Mesh* Finley_RectangularMesh_Line3(dim_t* numElements,double* Length,bool_t* periodic,index_t order,bool_t useElementsOnFace) {
24 dim_t N0,NE0,i0,NDOF0,NFaceElements,NUMNODES;
25 index_t k,node0;
26 Finley_Mesh* out;
27 char name[50];
28 double time0=Finley_timer();
29 NE0=MAX(1,numElements[0]);
30 N0=2*NE0+1;
31 if (!periodic[0]) {
32 NDOF0=N0;
33 NFaceElements=2;
34 } else {
35 NDOF0=N0-1;
36 NFaceElements=0;
37 }
38
39 /* allocate mesh: */
40
41 sprintf(name,"Rectangular mesh with %d nodes",N0);
42 out=Finley_Mesh_alloc(name,1,order);
43 if (Finley_ErrorCode!=NO_ERROR) return NULL;
44
45 out->Elements=Finley_ElementFile_alloc(Line3,out->order);
46 if (useElementsOnFace) {
47 out->FaceElements=Finley_ElementFile_alloc(Line3Face,out->order);
48 out->ContactElements=Finley_ElementFile_alloc(Line3Face_Contact,out->order);
49 } else {
50 out->FaceElements=Finley_ElementFile_alloc(Point1,out->order);
51 out->ContactElements=Finley_ElementFile_alloc(Point1_Contact,out->order);
52 }
53 out->Points=Finley_ElementFile_alloc(Point1,out->order);
54 if (Finley_ErrorCode!=NO_ERROR) {
55 Finley_Mesh_dealloc(out);
56 return NULL;
57 }
58
59 /* allocate tables: */
60
61 Finley_NodeFile_allocTable(out->Nodes,N0);
62 Finley_ElementFile_allocTable(out->Elements,NE0);
63 Finley_ElementFile_allocTable(out->FaceElements,NFaceElements);
64 if (Finley_ErrorCode!=NO_ERROR) {
65 Finley_Mesh_dealloc(out);
66 return NULL;
67 }
68
69 /* set nodes: */
70
71 #pragma omp parallel for private(i0,k)
72 for (i0=0;i0<N0;i0++) {
73 k=i0;
74 out->Nodes->Coordinates[INDEX2(0,k,1)]=DBLE(i0)/DBLE(N0-1)*Length[0];
75 out->Nodes->Id[k]=k;
76 out->Nodes->Tag[k]=0;
77 out->Nodes->degreeOfFreedom[k]=(i0%NDOF0);
78 }
79 if (!periodic[0]) {
80 out->Nodes->Tag[0]=1;
81 out->Nodes->Tag[N0-1]=2;
82 }
83
84 /* set the elements: */
85
86 #pragma omp parallel for private(i0,k,node0)
87 for (i0=0;i0<NE0;i0++) {
88 k=i0;
89 node0=2*i0;
90
91 out->Elements->Id[k]=k;
92 out->Elements->Tag[k]=0;
93 out->Elements->Color[k]=COLOR_MOD(i0);
94
95 out->Elements->Nodes[INDEX2(0,k,3)]=node0;
96 out->Elements->Nodes[INDEX2(1,k,3)]=node0+2;
97 out->Elements->Nodes[INDEX2(2,k,3)]=node0+1;
98 }
99 out->Elements->minColor=0;
100 out->Elements->maxColor=COLOR_MOD(0);
101
102 /* face elements: */
103 if (useElementsOnFace) {
104 NUMNODES=3;
105 } else {
106 NUMNODES=1;
107 }
108
109 if (!periodic[0]) {
110 out->FaceElements->Id[0]=NE0;
111 out->FaceElements->Tag[0]=1;
112 out->FaceElements->Color[0]=0;
113 if (useElementsOnFace) {
114 out->FaceElements->Nodes[INDEX2(0,0,NUMNODES)]=0;
115 out->FaceElements->Nodes[INDEX2(1,0,NUMNODES)]=2;
116 out->FaceElements->Nodes[INDEX2(2,0,NUMNODES)]=1;
117 } else {
118 out->FaceElements->Nodes[INDEX2(0,0,NUMNODES)]=0;
119 }
120
121 out->FaceElements->Id[1]=NE0+1;
122 out->FaceElements->Tag[1]=2;
123 out->FaceElements->Color[1]=1;
124 if (useElementsOnFace) {
125 out->FaceElements->Nodes[INDEX2(0,1,NUMNODES)]=N0-1;
126 out->FaceElements->Nodes[INDEX2(1,1,NUMNODES)]=N0-3;
127 out->FaceElements->Nodes[INDEX2(2,1,NUMNODES)]=N0-2;
128 } else {
129 out->FaceElements->Nodes[INDEX2(0,1,NUMNODES)]=N0-1;
130 }
131 }
132 out->FaceElements->minColor=0;
133 out->FaceElements->maxColor=1;
134
135 /* face elements done: */
136
137 /* condense the nodes: */
138
139 Finley_Mesh_resolveNodeIds(out);
140
141 /* prepare mesh for further calculations:*/
142
143 Finley_Mesh_prepare(out) ;
144
145 printf("timing: mesh generation: %.4e sec\n",Finley_timer()-time0);
146
147 if (Finley_ErrorCode!=NO_ERROR) {
148 Finley_Mesh_dealloc(out);
149 return NULL;
150 }
151 return out;
152 }
153
154 /*
155 * $Log$
156 * Revision 1.2 2005/07/08 04:07:53 jgs
157 * Merge of development branch back to main trunk on 2005-07-08
158 *
159 * Revision 1.1.1.1.2.1 2005/06/29 02:34:52 gross
160 * some changes towards 64 integers in finley
161 *
162 * Revision 1.1.1.1 2004/10/26 06:53:57 jgs
163 * initial import of project esys2
164 *
165 * Revision 1.1.1.1 2004/06/24 04:00:40 johng
166 * Initial version of eys using boost-python.
167 *
168 *
169 */
170

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