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

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Revision 2748 - (show annotations)
Tue Nov 17 07:32:59 2009 UTC (10 years ago) by gross
File MIME type: text/plain
File size: 3921 byte(s)
Macro elements are implemented now. VTK writer for macro elements still needs testing.
1
2 /*******************************************************
3 *
4 * Copyright (c) 2003-2009 by University of Queensland
5 * Earth Systems Science Computational Center (ESSCC)
6 * http://www.uq.edu.au/esscc
7 *
8 * Primary Business: Queensland, Australia
9 * Licensed under the Open Software License version 3.0
10 * http://www.opensource.org/licenses/osl-3.0.php
11 *
12 *******************************************************/
13
14
15 /**************************************************************/
16
17 /* assemblage routines: */
18
19 /* calculates the minimum distance between two vertices of elements and assigns the value to each */
20 /* quadrature point in element_size */
21
22
23 /**************************************************************/
24
25 #include "Assemble.h"
26 #include "Util.h"
27 #ifdef _OPENMP
28 #include <omp.h>
29 #endif
30
31 /**************************************************************/
32 void Finley_Assemble_getSize(Finley_NodeFile* nodes, Finley_ElementFile* elements, escriptDataC* element_size) {
33
34 Finley_ShapeFunction *shape=NULL;
35 Finley_ReferenceElement* refElement=NULL;
36 double *local_X=NULL,*element_size_array;
37 dim_t e,n0,n1,q,i, NVertices, NN, NS, numQuad, numDim;
38 index_t node_offset;
39 double d,diff,min_diff, f;
40 Finley_resetError();
41
42 if (nodes==NULL || elements==NULL) return;
43 refElement=Finley_ReferenceElementSet_borrowReferenceElement(elements->referenceElementSet,Finley_Assemble_reducedIntegrationOrder(element_size));
44 shape= refElement->Parametrization;
45 numDim=nodes->numDim;
46 numQuad=shape->numQuadNodes;
47 NN=elements->numNodes;
48 NS=refElement->Parametrization->Type->numShapes;
49 NVertices=refElement->Parametrization->Type->numVertices;
50
51
52 /* set a few more parameters */
53
54 if (getFunctionSpaceType(element_size)==FINLEY_CONTACT_ELEMENTS_2) {
55 node_offset=refElement->Type->offsets[1];
56 } else {
57 node_offset=refElement->Type->offsets[0];
58 }
59 f=pow(0.5, pow((double)(refElement->Type->numSubElements), 1./(double)(numDim))-1);
60
61 /* check the dimensions of element_size */
62
63 if (! numSamplesEqual(element_size,numQuad,elements->numElements)) {
64 Finley_setError(TYPE_ERROR,"Finley_Assemble_getSize: illegal number of samples of element size Data object");
65 } else if (! isDataPointShapeEqual(element_size,0,&(numDim))) {
66 Finley_setError(TYPE_ERROR,"Finley_Assemble_getSize: illegal data point shape of element size Data object");
67 } else if (!isExpanded(element_size)) {
68 Finley_setError(TYPE_ERROR,"Finley_Assemble_getSize: expanded Data object is expected for element size.");
69 }
70 /* now we can start: */
71
72 if (Finley_noError()) {
73 requireWrite(element_size);
74 #pragma omp parallel private(local_X)
75 {
76 /* allocation of work arrays */
77 local_X=THREAD_MEMALLOC(NN*numDim,double);
78 if (! Finley_checkPtr(local_X) ) {
79 /* open the element loop */
80 #pragma omp for private(e,min_diff,diff,n0,n1,d,q,i,element_size_array) schedule(static)
81 for(e=0;e<elements->numElements;e++) {
82 /* gather local coordinates of nodes into local_X(numDim,NN): */
83 Finley_Util_Gather_double(NS,&(elements->Nodes[INDEX2(node_offset,e,NN)]),numDim,nodes->Coordinates,local_X);
84 /* calculate minimal differences */
85 min_diff=-1;
86 for (n0=0;n0<NVertices;n0++) {
87 for (n1=n0+1;n1<NVertices;n1++) {
88 diff=0;
89 for (i=0;i<numDim;i++) {
90 d=local_X[INDEX2(i,n0,numDim)]-local_X[INDEX2(i,n1,numDim)];
91 diff+=d*d;
92 }
93 if (min_diff<0) {
94 min_diff=diff;
95 } else {
96 min_diff=MIN(min_diff,diff);
97 }
98 }
99 }
100 min_diff=sqrt(MAX(min_diff,0))*f;
101 /* set all values to min_diff */
102 element_size_array=getSampleDataRW(element_size,e);
103 for (q=0;q<numQuad;q++) element_size_array[q]=min_diff;
104 }
105 }
106 THREAD_MEMFREE(local_X);
107 } /* end of parallel region */
108 }
109 return;
110 }

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