/[escript]/trunk/esys2/finley/src/finleyC/Mesh_joinFaces.c
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Annotation of /trunk/esys2/finley/src/finleyC/Mesh_joinFaces.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: 5857 byte(s)
Initial revision

1 jgs 82 /**************************************************************/
2    
3     /* Finley: Mesh */
4    
5     /* detects faces in the mesh that match and replaces it by step elements */
6    
7     /**************************************************************/
8    
9     /* Copyrights by ACcESS Australia 2003 */
10     /* Author: gross@access.edu.au */
11     /* Version: $Id$ */
12    
13     /**************************************************************/
14    
15     #include "Common.h"
16     #include "Finley.h"
17     #include "Mesh.h"
18    
19     /**************************************************************/
20    
21     void Finley_Mesh_joinFaces(Finley_Mesh* self,double safety_factor,double tolerance) {
22    
23     int numPairs,*elem1=NULL,*elem0=NULL,*elem_mask=NULL,*matching_nodes_in_elem1=NULL;
24     Finley_ElementFile *newFaceElementsFile=NULL,*newContactElementsFile=NULL;
25     int e,i,e0,e1;
26     if (self->FaceElements==NULL) return;
27    
28     if (self->FaceElements->ReferenceElement->Type->numNodesOnFace<=0) {
29     Finley_ErrorCode=TYPE_ERROR;
30     sprintf(Finley_ErrorMsg,"joining faces cannot be applied to face elements of type %s",self->FaceElements->ReferenceElement->Type->Name);
31     return;
32     }
33     if (self->ContactElements==NULL) {
34     Finley_ErrorCode=TYPE_ERROR;
35     sprintf(Finley_ErrorMsg,"no contact element file present.");
36     return;
37     }
38    
39     int NN=self->FaceElements->ReferenceElement->Type->numNodes;
40     int NN_Contact=self->ContactElements->ReferenceElement->Type->numNodes;
41    
42     if (2*NN!=NN_Contact) {
43     Finley_ErrorCode=TYPE_ERROR;
44     sprintf(Finley_ErrorMsg,"contact element file for %s cannot hold elements created from face elements %s",
45     self->ContactElements->ReferenceElement->Type->Name,self->FaceElements->ReferenceElement->Type->Name);
46     return;
47     }
48    
49     /* allocate work arrays */
50     elem1=(int*) TMPMEMALLOC(sizeof(int)*self->FaceElements->numElements);
51     elem0=(int*) TMPMEMALLOC(sizeof(int)*self->FaceElements->numElements);
52     elem_mask=(int*) TMPMEMALLOC(sizeof(int)*self->FaceElements->numElements);
53     matching_nodes_in_elem1=(int*) TMPMEMALLOC(sizeof(int)*self->FaceElements->numElements*NN);
54    
55     if (!(Finley_checkPtr(elem1) || Finley_checkPtr(elem0) || Finley_checkPtr(elem_mask) || Finley_checkPtr(matching_nodes_in_elem1))) {
56     /* find the matching face elements */
57     Finley_Mesh_findMatchingFaces(self->Nodes,self->FaceElements,safety_factor,tolerance,&numPairs,elem0,elem1,matching_nodes_in_elem1);
58     if (Finley_ErrorCode==NO_ERROR) {
59     /* get a list of the face elements to be kept */
60     #pragma omp parallel for private(e) schedule(static)
61     for(e=0;e<self->FaceElements->numElements;e++) elem_mask[e]=1;
62     for(e=0;e<numPairs;e++) {
63     elem_mask[elem0[e]]=0;
64     elem_mask[elem1[e]]=0;
65     }
66     int new_numFaceElements=0;
67     /* OMP */
68     for(e=0;e<self->FaceElements->numElements;e++) {
69     if (elem_mask[e]>0) {
70     elem_mask[new_numFaceElements]=e;
71     new_numFaceElements++;
72     }
73     }
74     /* allocate new face element and Contact element files */
75     newContactElementsFile=Finley_ElementFile_alloc(self->ContactElements->ReferenceElement->Type->TypeId,self->ContactElements->order);
76     newFaceElementsFile=Finley_ElementFile_alloc(self->FaceElements->ReferenceElement->Type->TypeId,self->FaceElements->order);
77     if (Finley_ErrorCode==NO_ERROR) {
78     Finley_ElementFile_allocTable(newContactElementsFile,numPairs+self->ContactElements->numElements);
79     Finley_ElementFile_allocTable(newFaceElementsFile,new_numFaceElements);
80     }
81     /* copy the old elements over */
82     if (Finley_ErrorCode==NO_ERROR) {
83     /* get the face elements which are still in use:*/
84     Finley_ElementFile_gather(elem_mask,self->FaceElements,newFaceElementsFile);
85     /* get the Contact elements which are still in use:*/
86     Finley_ElementFile_copyTable(0,newContactElementsFile,0,0,self->ContactElements);
87     int c=self->ContactElements->numElements;
88     /* OMP */
89     for (e=0;e<numPairs;e++) {
90     e0=elem0[e];
91     e1=elem1[e];
92     newContactElementsFile->Id[c]=MIN(self->FaceElements->Id[e0],self->FaceElements->Id[e1]);
93     newContactElementsFile->Tag[c]=MIN(self->FaceElements->Tag[e0],self->FaceElements->Tag[e1]);
94     newContactElementsFile->Color[c]=e;
95     for (i=0;i<NN;i++) newContactElementsFile->Nodes[INDEX2(i,c,NN_Contact)]=self->FaceElements->Nodes[INDEX2(i,e0,NN)];
96     for (i=0;i<NN;i++) newContactElementsFile->Nodes[INDEX2(i+NN,c,NN_Contact)]=matching_nodes_in_elem1[INDEX2(i,e,NN)];
97     c++;
98     }
99     newContactElementsFile->numColors=numPairs;
100     }
101     /* set new face and Contact elements */
102     if (Finley_ErrorCode==NO_ERROR) {
103    
104     Finley_ElementFile_dealloc(self->FaceElements);
105     self->FaceElements=newFaceElementsFile;
106     Finley_ElementFile_prepare(&(self->FaceElements),self->Nodes->numNodes,self->Nodes->degreeOfFreedom);
107    
108     Finley_ElementFile_dealloc(self->ContactElements);
109     self->ContactElements=newContactElementsFile;
110     Finley_ElementFile_prepare(&(self->ContactElements),self->Nodes->numNodes,self->Nodes->degreeOfFreedom);
111    
112     Finley_Mesh_prepareNodes(self);
113    
114     } else {
115     Finley_ElementFile_dealloc(newFaceElementsFile);
116     Finley_ElementFile_dealloc(newContactElementsFile);
117     }
118     }
119     }
120     TMPMEMFREE(elem1);
121     TMPMEMFREE(elem0);
122     TMPMEMFREE(matching_nodes_in_elem1);
123     TMPMEMFREE(elem_mask);
124     }
125    
126     /*
127     * $Log$
128     * Revision 1.1 2004/10/26 06:53:57 jgs
129     * Initial revision
130     *
131     * Revision 1.1.1.1 2004/06/24 04:00:40 johng
132     * Initial version of eys using boost-python.
133     *
134     *
135     */
136    

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