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Mesh Oriented datABase
(version 5.4.1)
Array-based unstructured mesh datastructure
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Mesh Oriented datABase
(version 5.4.1)
Array-based unstructured mesh datastructure
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#include <stdlib.h>#include <stdio.h>#include <assert.h>#include <string.h>#include "mhdf.h"#include <H5Tpublic.h>
Include dependency graph for hexes_to_gmsh.c:Go to the source code of this file.
Defines | |
| #define | CHK_ERR(A) |
Functions | |
| int | main (int argc, char *argv[]) |
| #define CHK_ERR | ( | A | ) |
do \
{ \
if( mhdf_isError( A ) ) \
{ \
fprintf( stderr, "Error: %s\n", mhdf_message( A ) ); \
exit( 2 ); \
} \
} while( 0 )
MOAB, a Mesh-Oriented datABase, is a software component for creating, storing and accessing finite element mesh data.
Copyright 2006 Sandia Corporation. Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software.
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
Definition at line 56 of file hexes_to_gmsh.c.
Referenced by main().
| int main | ( | int | argc, |
| char * | argv[] | ||
| ) |
Definition at line 66 of file hexes_to_gmsh.c.
References CHK_ERR, mdhf_HEX_TYPE_NAME, mhdf_closeData(), mhdf_closeFile(), mhdf_getElemHandles(), mhdf_getElemTypeName(), mhdf_getTagInfo(), mhdf_haveDenseTag(), mhdf_INTEGER, mhdf_isError(), mhdf_node_type_handle(), mhdf_openConnectivity(), mhdf_openDenseTagData(), mhdf_openFile(), mhdf_openNodeCoords(), mhdf_openSparseTagData(), mhdf_readConnectivity(), mhdf_readNodeCoords(), and mhdf_readSparseTagEntities().
{
/* input file */
const char* filename;
mhdf_FileHandle file;
mhdf_Status status;
mhdf_Status* const sptr = &status;
hid_t handle; /* generic handle used to refer to any data block in file */
/* output file */
const char* gmsh_filename;
FILE* gmsh;
unsigned gmsh_type; /* hexahedral element type number */
double x, y, z; /* temp storage of node coordinates */
unsigned node_offset, node_id; /* temporary values */
unsigned* connectivity; /* temporary value */
/* node data */
long numnode; /* total number of nodes */
long nodestart; /* file id of first node in list */
int dimension; /* coordinate values per node */
double* nodecoords; /* interleaved node coordinates */
unsigned* nodeids; /* GLOBAL_ID value for nodes */
int have_nodeids = 0;
/* hex data */
char* hexgroup = NULL; /* name of element group containing hexes */
long numhex; /* total number of hexahedral elements */
long hexstart; /* file id of first hex in group */
int nodes_per_hex; /* length of connectivity list for a hex */
unsigned* hexconnectivity; /* hex connectivity data */
unsigned* hexids; /* GLOBAL_ID value for hexes */
int have_hexids = 0;
/* list of element groups in file */
char** elem_groups;
unsigned num_elem_groups;
char namebuffer[64];
/* tag data for accessing GLOBAL_ID */
int tagsize; /* number of values for each entity */
int ts, td, tg; /* unused tag properties */
int havesparse, havedense; /* Boolean values */
enum mhdf_TagDataType tagtype; /* base data type of tag */
hid_t sparse_handle[2]; /* handle pair for sparse tag data */
unsigned* sparse_entities; /* temp storage of sparse tag file ids */
unsigned* sparse_ids; /* temp storage of GLOBAL_ID values in spasre tag */
long junk, numtag; /* number of entities for which tag data is available */
long fileid, globalid; /* temporary values */
long ncount = 0, hcount = 0; /* temporary count of number of tag values */
/* iteration */
long i;
int j;
unsigned k;
/* process CL args (expect input .h5m file and output .gmsh file name) */
if( argc != 3 )
{
fprintf( stderr, "Usage: %s \n", argv[0] );
return 1;
}
filename = argv[1];
gmsh_filename = argv[2];
/* Open the file */
file = mhdf_openFile( filename, 0, 0, sptr );CHK_ERR( sptr );
/* Read node coordinates. */
handle = mhdf_openNodeCoords( file, &numnode, &dimension, &nodestart, sptr );CHK_ERR( sptr );
nodecoords = (double*)malloc( dimension * numnode * sizeof( double ) );
mhdf_readNodeCoords( handle, 0, numnode, nodecoords, sptr );CHK_ERR( sptr );
mhdf_closeData( file, handle, sptr );CHK_ERR( sptr );
/* Find first element group containing hexahedra */
elem_groups = mhdf_getElemHandles( file, &num_elem_groups, sptr );CHK_ERR( sptr );
for( k = 0; k < num_elem_groups; ++k )
{
mhdf_getElemTypeName( file, elem_groups[k], namebuffer, sizeof( namebuffer ), sptr );CHK_ERR( sptr );
if( !hexgroup && !strcmp( mdhf_HEX_TYPE_NAME, namebuffer ) )
hexgroup = strdup( elem_groups[k] );
else
printf( "Skipping element group '%s' containing element of type '%s'\n", elem_groups[k], namebuffer );
}
free( elem_groups );
if( !hexgroup )
{
fprintf( stderr, "No Hexahedra defined in file\n" );
return 4;
}
/* Read Hexahedron connectivity */
handle = mhdf_openConnectivity( file, hexgroup, &nodes_per_hex, &numhex, &hexstart, sptr );CHK_ERR( sptr );
hexconnectivity = (unsigned*)malloc( numhex * nodes_per_hex * sizeof( unsigned ) );
mhdf_readConnectivity( handle, 0, numhex, H5T_NATIVE_UINT, hexconnectivity, sptr );CHK_ERR( sptr );
mhdf_closeData( file, handle, sptr );CHK_ERR( sptr );
/* Note: hex connectivity list contains file-space node IDs, which are
the nodes in the sequence they are read from the file, with
the first node having an ID of 'nodestart' */
/* Check for "GLOBAL_ID" tag */
nodeids = (unsigned*)malloc( numnode * sizeof( unsigned ) );
hexids = (unsigned*)malloc( numhex * sizeof( unsigned ) );
mhdf_getTagInfo( file, "GLOBAL_ID", &tagtype, &tagsize, &ts, &td, &tg, &havesparse, sptr );
/* If have GLOBAL_ID tag, try to read values for nodes and hexes */
if( !mhdf_isError( sptr ) )
{
/* Check that the tag contains what we expect */
if( tagtype != mhdf_INTEGER || tagsize != 1 )
{
fprintf( stderr, "ERROR: Invalid data type for 'GLOBAL_ID' tag.\n" );
exit( 3 );
}
/* Check for and read dense-format tag data for nodes */
havedense = mhdf_haveDenseTag( file, "GLOBAL_ID", mhdf_node_type_handle(), sptr );CHK_ERR( sptr );
if( havedense )
{
handle = mhdf_openDenseTagData( file, "GLOBAL_ID", mhdf_node_type_handle(), &numtag, sptr );CHK_ERR( sptr );
assert( numtag == numnode );
mhdf_readDenseTag( handle, 0, numtag, H5T_NATIVE_UINT, nodeids, sptr );CHK_ERR( sptr );
mhdf_closeData( file, handle, sptr );CHK_ERR( sptr );
have_nodeids = 1;
}
/* Check for and read dense-format tag data for hexes */
havedense = mhdf_haveDenseTag( file, "GLOBAL_ID", hexgroup, sptr );CHK_ERR( sptr );
if( havedense )
{
handle = mhdf_openDenseTagData( file, "GLOBAL_ID", hexgroup, &numtag, sptr );CHK_ERR( sptr );
assert( numtag == numhex );
mhdf_readDenseTag( handle, 0, numtag, H5T_NATIVE_UINT, hexids, sptr );CHK_ERR( sptr );
mhdf_closeData( file, handle, sptr );CHK_ERR( sptr );
have_hexids = 1;
}
/* Check for and read sparse-format tag data */
if( havesparse )
{
mhdf_openSparseTagData( file, "GLOBAL_ID", &numtag, &junk, sparse_handle, sptr );CHK_ERR( sptr );
sparse_entities = (unsigned*)malloc( numtag * sizeof( unsigned ) );
mhdf_readSparseTagEntities( sparse_handle[0], 0, numtag, H5T_NATIVE_UINT, sparse_entities, sptr );CHK_ERR( sptr );
sparse_ids = (unsigned*)malloc( numtag * sizeof( unsigned ) );
mhdf_readSparseTagValues( sparse_handle[1], 0, numtag, H5T_NATIVE_UINT, sparse_ids, sptr );CHK_ERR( sptr );
mhdf_closeData( file, sparse_handle[0], sptr );CHK_ERR( sptr );
mhdf_closeData( file, sparse_handle[1], sptr );CHK_ERR( sptr );
/* Set hex and node ids from sparse tag data */
for( i = 0; i < numtag; ++i )
{
fileid = sparse_entities[i];
globalid = sparse_ids[i];
if( fileid >= nodestart && fileid - nodestart < numnode )
{
nodeids[fileid - nodestart] = globalid;
++ncount;
}
else if( fileid >= hexstart && fileid - hexstart < numhex )
{
hexids[fileid - hexstart] = globalid;
++hcount;
}
}
free( sparse_ids );
free( sparse_entities );
/* make sure there was an ID for each node and each hex */
if( ncount == numnode ) have_nodeids = 1;
if( hcount == numhex ) have_hexids = 1;
} /* end have sparse tag for GLOBAL_ID */
} /* end have GLOBAL_ID tag */
/* done with input file */
free( hexgroup );
mhdf_closeFile( file, sptr );CHK_ERR( sptr );
/* if no GLOBAL_ID, just use incrementing values */
if( !have_nodeids )
for( i = 0; i < numnode; ++i )
nodeids[i] = i + 1;
if( !have_hexids )
for( i = 0; i < numhex; ++i )
hexids[i] = i + 1;
/* write out as gmesh file version 1.0 */
/* get gmsh type for hexahedrons */
if( nodes_per_hex == 8 )
gmsh_type = 5;
else if( nodes_per_hex == 27 )
gmsh_type = 12;
else
{
fprintf( stderr, "Cannot store %d node hex in gmsh file.\n", nodes_per_hex );
exit( 4 );
}
/* open file */
gmsh = fopen( gmsh_filename, "w" );
/* Write node data. If dimension is less than 3,
write zero for other coordinate values. In the
(highly unlikely) case that dimension is greater
than three, disregard higher-dimension coordinate
values. */
fprintf( gmsh, "$NOD\n" );
fprintf( gmsh, "%lu\n", numnode );
for( i = 0; i < numnode; ++i )
{
x = nodecoords[dimension * i];
y = z = 0.0;
if( dimension > 1 )
{
y = nodecoords[dimension * i + 1];
if( dimension > 2 )
{
z = nodecoords[dimension * i + 2];
}
}
fprintf( gmsh, "%u %f %f %f\n", nodeids[i], x, y, z );
}
/* Write element connectivity data */
fprintf( gmsh, "$ENDNOD\n$ELM\n" );
fprintf( gmsh, "%lu\n", numhex );
for( i = 0; i < numhex; ++i )
{
fprintf( gmsh, "%u %u 1 1 %d", hexids[i], gmsh_type, nodes_per_hex );
/* connectivity list for this hex */
connectivity = hexconnectivity + i * nodes_per_hex;
for( j = 0; j < nodes_per_hex; ++j )
{
/* get offset in node list from file id */
node_offset = connectivity[j] - nodestart;
/* get node id from ID list */
node_id = nodeids[node_offset];
fprintf( gmsh, " %u", node_id );
}
fprintf( gmsh, "\n" );
}
fprintf( gmsh, "$ENDELM\n" );
fclose( gmsh );
return 0;
}
1.7.6.1.
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