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

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Revision 201 - (show annotations)
Wed Nov 23 04:10:21 2005 UTC (13 years, 11 months ago) by jgs
Original Path: trunk/finley/src/finley/Mesh_joinFaces.c
File MIME type: text/plain
File size: 6534 byte(s)
copy finleyC and CPPAdapter to finley and finley/CPPAdapter to
facilitate scons builds

1 /*
2 ******************************************************************************
3 * *
4 * COPYRIGHT ACcESS 2003,2004,2005 - All Rights Reserved *
5 * *
6 * This software is the property of ACcESS. No part of this code *
7 * may be copied in any form or by any means without the expressed written *
8 * consent of ACcESS. Copying, use or modification of this software *
9 * by any unauthorised person is illegal unless that person has a software *
10 * license agreement with ACcESS. *
11 * *
12 ******************************************************************************
13 */
14
15 /**************************************************************/
16
17 /* Finley: Mesh */
18
19 /* detects faces in the mesh that match and replaces it by step elements */
20
21 /**************************************************************/
22
23 /* Author: gross@access.edu.au */
24 /* Version: $Id$ */
25
26 /**************************************************************/
27
28 #include "Mesh.h"
29
30 /**************************************************************/
31
32 void Finley_Mesh_joinFaces(Finley_Mesh* self,double safety_factor,double tolerance) {
33
34 char error_msg[LenErrorMsg_MAX];
35 index_t e0,e1,*elem1=NULL,*elem0=NULL,*elem_mask=NULL,*matching_nodes_in_elem1=NULL;
36 Finley_ElementFile *newFaceElementsFile=NULL,*newContactElementsFile=NULL;
37 dim_t e,i,numPairs;
38 if (self->FaceElements==NULL) return;
39
40 if (self->FaceElements->ReferenceElement->Type->numNodesOnFace<=0) {
41 sprintf(error_msg,"Finley_Mesh_joinFaces:joining faces cannot be applied to face elements of type %s",self->FaceElements->ReferenceElement->Type->Name);
42 Finley_setError(TYPE_ERROR,error_msg);
43 return;
44 }
45 if (self->ContactElements==NULL) {
46 Finley_setError(TYPE_ERROR,"Finley_Mesh_joinFaces: no contact element file present.");
47 return;
48 }
49
50 int NN=self->FaceElements->ReferenceElement->Type->numNodes;
51 int NN_Contact=self->ContactElements->ReferenceElement->Type->numNodes;
52
53 if (2*NN!=NN_Contact) {
54 sprintf(error_msg,"Finley_Mesh_joinFaces:contact element file for %s cannot hold elements created from face elements %s",
55 self->ContactElements->ReferenceElement->Type->Name,self->FaceElements->ReferenceElement->Type->Name);
56 Finley_setError(TYPE_ERROR,error_msg);
57 return;
58 }
59
60 /* allocate work arrays */
61 elem1=TMPMEMALLOC(self->FaceElements->numElements,index_t);
62 elem0=TMPMEMALLOC(self->FaceElements->numElements,index_t);
63 elem_mask=TMPMEMALLOC(self->FaceElements->numElements,index_t);
64 matching_nodes_in_elem1=TMPMEMALLOC(self->FaceElements->numElements*NN,index_t);
65
66 if (!(Finley_checkPtr(elem1) || Finley_checkPtr(elem0) || Finley_checkPtr(elem_mask) || Finley_checkPtr(matching_nodes_in_elem1))) {
67 /* find the matching face elements */
68 Finley_Mesh_findMatchingFaces(self->Nodes,self->FaceElements,safety_factor,tolerance,&numPairs,elem0,elem1,matching_nodes_in_elem1);
69 if (Finley_noError()) {
70 /* get a list of the face elements to be kept */
71 #pragma omp parallel for private(e) schedule(static)
72 for(e=0;e<self->FaceElements->numElements;e++) elem_mask[e]=1;
73 for(e=0;e<numPairs;e++) {
74 elem_mask[elem0[e]]=0;
75 elem_mask[elem1[e]]=0;
76 }
77 dim_t new_numFaceElements=0;
78 /* OMP */
79 for(e=0;e<self->FaceElements->numElements;e++) {
80 if (elem_mask[e]>0) {
81 elem_mask[new_numFaceElements]=e;
82 new_numFaceElements++;
83 }
84 }
85 /* allocate new face element and Contact element files */
86 newContactElementsFile=Finley_ElementFile_alloc(self->ContactElements->ReferenceElement->Type->TypeId,self->ContactElements->order);
87 newFaceElementsFile=Finley_ElementFile_alloc(self->FaceElements->ReferenceElement->Type->TypeId,self->FaceElements->order);
88 if (Finley_noError()) {
89 Finley_ElementFile_allocTable(newContactElementsFile,numPairs+self->ContactElements->numElements);
90 Finley_ElementFile_allocTable(newFaceElementsFile,new_numFaceElements);
91 }
92 /* copy the old elements over */
93 if (Finley_noError()) {
94 /* get the face elements which are still in use:*/
95 Finley_ElementFile_gather(elem_mask,self->FaceElements,newFaceElementsFile);
96 /* get the Contact elements which are still in use:*/
97 Finley_ElementFile_copyTable(0,newContactElementsFile,0,0,self->ContactElements);
98 dim_t c=self->ContactElements->numElements;
99 /* OMP */
100 for (e=0;e<numPairs;e++) {
101 e0=elem0[e];
102 e1=elem1[e];
103 newContactElementsFile->Id[c]=MIN(self->FaceElements->Id[e0],self->FaceElements->Id[e1]);
104 newContactElementsFile->Tag[c]=MIN(self->FaceElements->Tag[e0],self->FaceElements->Tag[e1]);
105 newContactElementsFile->Color[c]=e;
106 for (i=0;i<NN;i++) newContactElementsFile->Nodes[INDEX2(i,c,NN_Contact)]=self->FaceElements->Nodes[INDEX2(i,e0,NN)];
107 for (i=0;i<NN;i++) newContactElementsFile->Nodes[INDEX2(i+NN,c,NN_Contact)]=matching_nodes_in_elem1[INDEX2(i,e,NN)];
108 c++;
109 }
110 newContactElementsFile->minColor=0;
111 newContactElementsFile->maxColor=numPairs-1;
112 }
113 /* set new face and Contact elements */
114 if (Finley_noError()) {
115
116 Finley_ElementFile_dealloc(self->FaceElements);
117 self->FaceElements=newFaceElementsFile;
118 Finley_ElementFile_prepare(&(self->FaceElements),self->Nodes->numNodes,self->Nodes->degreeOfFreedom);
119
120 Finley_ElementFile_dealloc(self->ContactElements);
121 self->ContactElements=newContactElementsFile;
122 Finley_ElementFile_prepare(&(self->ContactElements),self->Nodes->numNodes,self->Nodes->degreeOfFreedom);
123
124 Finley_Mesh_prepare(self);
125
126 } else {
127 Finley_ElementFile_dealloc(newFaceElementsFile);
128 Finley_ElementFile_dealloc(newContactElementsFile);
129 }
130 }
131 }
132 TMPMEMFREE(elem1);
133 TMPMEMFREE(elem0);
134 TMPMEMFREE(matching_nodes_in_elem1);
135 TMPMEMFREE(elem_mask);
136 }

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