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

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Revision 616 - (show annotations)
Wed Mar 22 02:46:56 2006 UTC (13 years, 7 months ago) by elspeth
File MIME type: text/plain
File size: 6212 byte(s)
Copyright added to more source files.

1 /*
2 ************************************************************
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 */
12
13 /**************************************************************/
14
15 /* Finley: Mesh */
16
17 /* detects faces in the mesh that match and replaces it by step elements */
18
19 /**************************************************************/
20
21 /* Author: gross@access.edu.au */
22 /* Version: $Id$ */
23
24 /**************************************************************/
25
26 #include "Mesh.h"
27
28 /**************************************************************/
29
30 void Finley_Mesh_joinFaces(Finley_Mesh* self,double safety_factor,double tolerance) {
31
32 char error_msg[LenErrorMsg_MAX];
33 index_t e0,e1,*elem1=NULL,*elem0=NULL,*elem_mask=NULL,*matching_nodes_in_elem1=NULL;
34 Finley_ElementFile *newFaceElementsFile=NULL,*newContactElementsFile=NULL;
35 dim_t e,i,numPairs;
36 if (self->FaceElements==NULL) return;
37
38 if (self->FaceElements->ReferenceElement->Type->numNodesOnFace<=0) {
39 sprintf(error_msg,"Finley_Mesh_joinFaces:joining faces cannot be applied to face elements of type %s",self->FaceElements->ReferenceElement->Type->Name);
40 Finley_setError(TYPE_ERROR,error_msg);
41 return;
42 }
43 if (self->ContactElements==NULL) {
44 Finley_setError(TYPE_ERROR,"Finley_Mesh_joinFaces: no contact element file present.");
45 return;
46 }
47
48 int NN=self->FaceElements->ReferenceElement->Type->numNodes;
49 int NN_Contact=self->ContactElements->ReferenceElement->Type->numNodes;
50
51 if (2*NN!=NN_Contact) {
52 sprintf(error_msg,"Finley_Mesh_joinFaces:contact element file for %s cannot hold elements created from face elements %s",
53 self->ContactElements->ReferenceElement->Type->Name,self->FaceElements->ReferenceElement->Type->Name);
54 Finley_setError(TYPE_ERROR,error_msg);
55 return;
56 }
57
58 /* allocate work arrays */
59 elem1=TMPMEMALLOC(self->FaceElements->numElements,index_t);
60 elem0=TMPMEMALLOC(self->FaceElements->numElements,index_t);
61 elem_mask=TMPMEMALLOC(self->FaceElements->numElements,index_t);
62 matching_nodes_in_elem1=TMPMEMALLOC(self->FaceElements->numElements*NN,index_t);
63
64 if (!(Finley_checkPtr(elem1) || Finley_checkPtr(elem0) || Finley_checkPtr(elem_mask) || Finley_checkPtr(matching_nodes_in_elem1))) {
65 /* find the matching face elements */
66 Finley_Mesh_findMatchingFaces(self->Nodes,self->FaceElements,safety_factor,tolerance,&numPairs,elem0,elem1,matching_nodes_in_elem1);
67 if (Finley_noError()) {
68 /* get a list of the face elements to be kept */
69 #pragma omp parallel for private(e) schedule(static)
70 for(e=0;e<self->FaceElements->numElements;e++) elem_mask[e]=1;
71 for(e=0;e<numPairs;e++) {
72 elem_mask[elem0[e]]=0;
73 elem_mask[elem1[e]]=0;
74 }
75 dim_t new_numFaceElements=0;
76 /* OMP */
77 for(e=0;e<self->FaceElements->numElements;e++) {
78 if (elem_mask[e]>0) {
79 elem_mask[new_numFaceElements]=e;
80 new_numFaceElements++;
81 }
82 }
83 /* allocate new face element and Contact element files */
84 newContactElementsFile=Finley_ElementFile_alloc(self->ContactElements->ReferenceElement->Type->TypeId,self->ContactElements->order);
85 newFaceElementsFile=Finley_ElementFile_alloc(self->FaceElements->ReferenceElement->Type->TypeId,self->FaceElements->order);
86 if (Finley_noError()) {
87 Finley_ElementFile_allocTable(newContactElementsFile,numPairs+self->ContactElements->numElements);
88 Finley_ElementFile_allocTable(newFaceElementsFile,new_numFaceElements);
89 }
90 /* copy the old elements over */
91 if (Finley_noError()) {
92 /* get the face elements which are still in use:*/
93 Finley_ElementFile_gather(elem_mask,self->FaceElements,newFaceElementsFile);
94 /* get the Contact elements which are still in use:*/
95 Finley_ElementFile_copyTable(0,newContactElementsFile,0,0,self->ContactElements);
96 dim_t c=self->ContactElements->numElements;
97 /* OMP */
98 for (e=0;e<numPairs;e++) {
99 e0=elem0[e];
100 e1=elem1[e];
101 newContactElementsFile->Id[c]=MIN(self->FaceElements->Id[e0],self->FaceElements->Id[e1]);
102 newContactElementsFile->Tag[c]=MIN(self->FaceElements->Tag[e0],self->FaceElements->Tag[e1]);
103 newContactElementsFile->Color[c]=e;
104 for (i=0;i<NN;i++) newContactElementsFile->Nodes[INDEX2(i,c,NN_Contact)]=self->FaceElements->Nodes[INDEX2(i,e0,NN)];
105 for (i=0;i<NN;i++) newContactElementsFile->Nodes[INDEX2(i+NN,c,NN_Contact)]=matching_nodes_in_elem1[INDEX2(i,e,NN)];
106 c++;
107 }
108 newContactElementsFile->minColor=0;
109 newContactElementsFile->maxColor=numPairs-1;
110 }
111 /* set new face and Contact elements */
112 if (Finley_noError()) {
113
114 Finley_ElementFile_dealloc(self->FaceElements);
115 self->FaceElements=newFaceElementsFile;
116 Finley_ElementFile_prepare(&(self->FaceElements),self->Nodes->numNodes,self->Nodes->degreeOfFreedom);
117
118 Finley_ElementFile_dealloc(self->ContactElements);
119 self->ContactElements=newContactElementsFile;
120 Finley_ElementFile_prepare(&(self->ContactElements),self->Nodes->numNodes,self->Nodes->degreeOfFreedom);
121
122 Finley_Mesh_prepare(self);
123
124 } else {
125 Finley_ElementFile_dealloc(newFaceElementsFile);
126 Finley_ElementFile_dealloc(newContactElementsFile);
127 }
128 }
129 }
130 TMPMEMFREE(elem1);
131 TMPMEMFREE(elem0);
132 TMPMEMFREE(matching_nodes_in_elem1);
133 TMPMEMFREE(elem_mask);
134 }

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