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

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Revision 782 - (hide annotations)
Tue Jul 18 00:47:47 2006 UTC (13 years, 1 month 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 jgs 150 /*
2 elspeth 626 ************************************************************
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 jgs 150 */
12     /* Version: $Id$ */
13 jgs 82
14 jgs 150
15 jgs 82 #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 jgs 150 #include "Finley.h"
60 jgs 82 #include "NodeFile.h"
61     #include "ElementFile.h"
62 robwdcock 682 #include "paso/SystemMatrixPattern.h"
63     #include "escript/DataC.h"
64 jgs 82
65 bcumming 730 #ifdef PASO_MPI
66     #include "paso/Paso_MPI.h"
67 bcumming 782
68 bcumming 730 #endif
69    
70 jgs 82 /**************************************************************/
71    
72     /* this struct holds a mesh: */
73    
74     struct Finley_Mesh {
75     char* Name; /* the name of the mesh */
76 jgs 123 index_t order; /* integration order */
77     dim_t reference_counter; /* counts the number of references to the mesh; */
78 jgs 82 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 jgs 102
84     /* pointer to the sparse matrix pattern */
85    
86 jgs 150 Paso_SystemMatrixPattern *FullFullPattern;
87     Paso_SystemMatrixPattern *FullReducedPattern;
88     Paso_SystemMatrixPattern *ReducedFullPattern;
89     Paso_SystemMatrixPattern *ReducedReducedPattern;
90 bcumming 730 #ifdef PASO_MPI
91     Paso_MPIInfo *MPIInfo;
92     #endif
93 jgs 82 };
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 jgs 123 index_t refId;
101 jgs 82 double x[MAX_numDim];
102     };
103     typedef struct Finley_Mesh_findMatchingFaces_center Finley_Mesh_findMatchingFaces_center;
104    
105     /**************************************************************/
106    
107     /* interfaces: */
108 bcumming 730 #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 bcumming 751 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 bcumming 782 void Finley_Mesh_resolveDegreeOfFreedomOrder( Finley_Mesh *in, bool_t doReduced );
115     void print_mesh_statistics( Finley_Mesh *out, bool_t reduced );
116 bcumming 730 #endif
117     /*Finley_Mesh* Finley_Mesh_alloc(char*,int,int);*/
118 jgs 102 Finley_Mesh* Finley_Mesh_reference(Finley_Mesh*);
119 jgs 82 void Finley_Mesh_dealloc(Finley_Mesh*);
120 jgs 123 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 jgs 150 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 jgs 82 void Finley_Mesh_write(Finley_Mesh*,char*);
127 jgs 123 Finley_Mesh* Finley_Mesh_read(char*,index_t);
128 gross 532 void Finley_Mesh_setCoordinates(Finley_Mesh*,escriptDataC*);
129 jgs 82
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 jgs 123 Finley_Mesh* Finley_Mesh_merge(dim_t, Finley_Mesh**);
136 jgs 82
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 jgs 153 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 jgs 82
149     #endif /* #ifndef INC_FINLEY_MESH */
150 jgs 123

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