/[escript]/trunk/finley/src/Mesh.h
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Contents of /trunk/finley/src/Mesh.h

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Revision 782 - (show annotations)
Tue Jul 18 00:47:47 2006 UTC (13 years, 3 months ago) by bcumming
File MIME type: text/plain
File size: 6633 byte(s)
Large number of changes to Finley for meshing in MPI.

- optimisation and neatening up of rectcanglular mesh generation code
- first and second order 1D, 2D and 3D rectangular meshes are now
  available in finley and escript using MPI.
- reduced meshes now generated in MPI, and interpolation to and from 
  reduced data types now supported.  

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 /* Version: $Id$ */
13
14
15 #ifndef INC_FINLEY_MESH
16 #define INC_FINLEY_MESH
17
18 /**************************************************************/
19
20 /* Finley: Mesh */
21
22 /* A mesh is built from nodes and elements which are describing the
23 domain, the surface and point sources. (the latter are needed to
24 establish links with other codes, in particular to particle
25 codes). The nodes are stored a Finley_NodeFile and elements in a
26 Finley_ElementFile. A Finley_NodeFile and three Finley_ElementFile
27 containing the elements describing the domain, surface and point
28 sources respectively. Notice that the surface elements do not
29 necessaryly cover the entire surface of the domain. */
30
31 /* The element type is fixed by the reference element, see
32 ReferenceElement.h. The numbering of the nodes starts with 0. */
33
34 /* Important: it is assumed that every node is appearing in at least
35 one element or surface element and that any node used in an
36 element, surface element or as a point is specified in the
37 Finley_Node, see also Finley_resolveNodeIds. */
38
39 /* In some cases it is useful to refer to a mesh entirly built from
40 order 1 (=linear) elements. The linear version of the mesh can be
41 accessed by referning to the first few nodes of each element
42 (thanks to the way the nodes are ordered). As the numbering of
43 these nodes is not continuous a relabeling vectors are introduced
44 in the Finley_NodeFile. This feature is not fully implemented
45 yet. */
46
47 /* allnodes and elements are tagged. the tag allows to group nodes and
48 elements. A typical application is to mark surface elements on a
49 certain portion of the domain with the same tag. All these surface
50 elements can then assigned the same value eg. for the pressure. */
51
52 /* Thespacial dimension is determined by the type of elements
53 used. The spacial dimension should be accessed by the function
54 Finley_Mesh_getDim. Notice that the element type also determines
55 the type of surface elements to be used. */
56
57 /**************************************************************/
58
59 #include "Finley.h"
60 #include "NodeFile.h"
61 #include "ElementFile.h"
62 #include "paso/SystemMatrixPattern.h"
63 #include "escript/DataC.h"
64
65 #ifdef PASO_MPI
66 #include "paso/Paso_MPI.h"
67
68 #endif
69
70 /**************************************************************/
71
72 /* this struct holds a mesh: */
73
74 struct Finley_Mesh {
75 char* Name; /* the name of the mesh */
76 index_t order; /* integration order */
77 dim_t reference_counter; /* counts the number of references to the mesh; */
78 Finley_NodeFile* Nodes; /* the table of the nodes */
79 Finley_ElementFile* Elements; /* the table of the elements */
80 Finley_ElementFile* FaceElements; /* the table of the face elements */
81 Finley_ElementFile* ContactElements; /* the table of the contact elements */
82 Finley_ElementFile* Points; /* the table of points (treated as elements of dimension 0) */
83
84 /* pointer to the sparse matrix pattern */
85
86 Paso_SystemMatrixPattern *FullFullPattern;
87 Paso_SystemMatrixPattern *FullReducedPattern;
88 Paso_SystemMatrixPattern *ReducedFullPattern;
89 Paso_SystemMatrixPattern *ReducedReducedPattern;
90 #ifdef PASO_MPI
91 Paso_MPIInfo *MPIInfo;
92 #endif
93 };
94
95 typedef struct Finley_Mesh Finley_Mesh;
96
97 /* these structures are used for matching surfaces elements: */
98
99 struct Finley_Mesh_findMatchingFaces_center{
100 index_t refId;
101 double x[MAX_numDim];
102 };
103 typedef struct Finley_Mesh_findMatchingFaces_center Finley_Mesh_findMatchingFaces_center;
104
105 /**************************************************************/
106
107 /* interfaces: */
108 #ifndef PASO_MPI
109 Finley_Mesh* Finley_Mesh_alloc(char* name,dim_t numDim, index_t order);
110 #else
111 Finley_Mesh* Finley_Mesh_alloc(char* name,dim_t numDim, index_t order, Paso_MPIInfo *mpi_info);
112 void Finley_Mesh_markOrderedNodesLocation(index_t* mask,index_t offset,Finley_Mesh* in,bool_t useLinear);
113 void Finley_Mesh_markOrderedDegreesOfFreedomLocation(index_t* mask,index_t offset,Finley_Mesh* in,bool_t useLinear);
114 void Finley_Mesh_resolveDegreeOfFreedomOrder( Finley_Mesh *in, bool_t doReduced );
115 void print_mesh_statistics( Finley_Mesh *out, bool_t reduced );
116 #endif
117 /*Finley_Mesh* Finley_Mesh_alloc(char*,int,int);*/
118 Finley_Mesh* Finley_Mesh_reference(Finley_Mesh*);
119 void Finley_Mesh_dealloc(Finley_Mesh*);
120 dim_t Finley_Mesh_getDim(Finley_Mesh*);
121 dim_t Finley_Mesh_getNumNodes(Finley_Mesh*);
122 dim_t Finley_Mesh_getNumDegreesOfFreedom(Finley_Mesh*);
123 dim_t Finley_Mesh_getReducedNumDegreesOfFreedom(Finley_Mesh*);
124 Paso_SystemMatrixPattern* Finley_getPattern(Finley_Mesh *mesh,bool_t reduce_row_order, bool_t reduce_col_order);
125 Paso_SystemMatrixPattern* Finley_makePattern(Finley_Mesh *mesh,bool_t reduce_row_order, bool_t reduce_col_order);
126 void Finley_Mesh_write(Finley_Mesh*,char*);
127 Finley_Mesh* Finley_Mesh_read(char*,index_t);
128 void Finley_Mesh_setCoordinates(Finley_Mesh*,escriptDataC*);
129
130 void Finley_Mesh_prepare(Finley_Mesh* in);
131 void Finley_Mesh_prepareNodes(Finley_Mesh* in);
132 void Finley_Mesh_improveColoring(Finley_Mesh* in);
133 void Finley_Mesh_optimizeElementDistribution(Finley_Mesh* in);
134 void Finley_Mesh_resolveNodeIds(Finley_Mesh*);
135 Finley_Mesh* Finley_Mesh_merge(dim_t, Finley_Mesh**);
136
137 void Finley_Mesh_relableElementNodes(int*,int,Finley_Mesh*);
138 void Finley_Mesh_markNodes(int*,int,Finley_Mesh*,int);
139
140 void Finley_Mesh_glueFaces(Finley_Mesh* self,double safety_factor,double tolerance);
141 void Finley_Mesh_joinFaces(Finley_Mesh* self,double safety_factor,double tolerance);
142
143 int Finley_Mesh_findMatchingFaces_compar(const void*,const void*);
144 void Finley_Mesh_findMatchingFaces(Finley_NodeFile*,Finley_ElementFile *,double,double, int*, int*,int*,int*);
145 void Finley_Mesh_print(Finley_Mesh *in);
146 void Finley_Mesh_saveDX(const char * filename_p, Finley_Mesh *mesh_p, const dim_t num_data,char* *names_p,escriptDataC* *data_pp);
147 void Finley_Mesh_saveVTK(const char * filename_p, Finley_Mesh *mesh_p, const dim_t num_data,char* *names_p,escriptDataC* *data_pp);
148
149 #endif /* #ifndef INC_FINLEY_MESH */
150

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