Mesh Oriented datABase  (version 5.5.1)
An array-based unstructured mesh library
SetsNTags.cpp

Description: Get the sets representing materials and Dirichlet/Neumann boundary conditions and list their contents.
This example shows how to get entity sets, and tags on those sets.

To run: ./SetsNTags [meshfile]
(default values can run if users don't specify a mesh file)

/** @example SetsNTags.cpp
* Description: Get the sets representing materials and Dirichlet/Neumann boundary conditions and
* list their contents.\n This example shows how to get entity sets, and tags on those sets.
*
* To run: ./SetsNTags [meshfile]\n
* (default values can run if users don't specify a mesh file)
*/
#include "moab/Core.hpp"
#include "moab/Range.hpp"
#include <iostream>
using namespace moab;
using namespace std;
#ifndef MESH_DIR
#define MESH_DIR "."
#endif
string test_file_name = string( MESH_DIR ) + string( "/hex01.vtk" );
// Tag names for these conventional tags come from MBTagConventions.hpp
int main( int argc, char** argv )
{
// Get the material set tag handle
Tag mtag;
ErrorCode rval;
Range sets, set_ents;
// Get MOAB instance
Interface* mb = new( std::nothrow ) Core;
if( NULL == mb ) return 1;
// Need option handling here for input filename
if( argc > 1 )
{
// User has input a mesh file
test_file_name = argv[1];
}
// Load a file
rval = mb->load_file( test_file_name.c_str() );MB_CHK_ERR( rval );
// Loop over set types
for( int i = 0; i < 3; i++ )
{
// Get the tag handle for this tag name; tag should already exist (it was created during
// file read)
rval = mb->tag_get_handle( tag_nms[i], 1, MB_TYPE_INTEGER, mtag );MB_CHK_ERR( rval );
// Get all the sets having that tag (with any value for that tag)
sets.clear();
rval = mb->get_entities_by_type_and_tag( 0, MBENTITYSET, &mtag, NULL, 1, sets );MB_CHK_ERR( rval );
// Iterate over each set, getting the entities and printing them
for( set_it = sets.begin(); set_it != sets.end(); ++set_it )
{
// Get the id for this set
int set_id;
rval = mb->tag_get_data( mtag, &( *set_it ), 1, &set_id );MB_CHK_ERR( rval );
// Get the entities in the set, recursively
rval = mb->get_entities_by_handle( *set_it, set_ents, true );MB_CHK_ERR( rval );
cout << tag_nms[i] << " " << set_id << " has " << set_ents.size() << " entities:" << endl;
set_ents.print( " " );
set_ents.clear();
}
}
delete mb;
return 0;
}