read_obj_test.cpp

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#include <iostream>
#include "moab/Interface.hpp"
#include "TestUtil.hpp"
#include "Internals.hpp"
#include "moab/Core.hpp"
#include "MBTagConventions.hpp"
#include "moab/Types.hpp"
#include "moab/GeomTopoTool.hpp"

using namespace moab;

#define CHKERR( A )                                                                                        \
    do                                                                                                     \
    {                                                                                                      \
        if( MB_SUCCESS != ( A ) )                                                                          \
        {                                                                                                  \
            std::cerr << "Failure (error code " << ( A ) << ") at " __FILE__ ":" << __LINE__ << std::endl; \
            return A;                                                                                      \
        }                                                                                                  \
    } while( false )

std::string test    = TestDir + "unittest/io/test.obj";
std::string shuttle = TestDir + "unittest/io/shuttle.obj";

GeomTopoTool* myGeomTool;

Tag geom_tag;
Tag name_tag;
Tag id_tag;

void read_file( Interface& moab, const char* input_file );
void test_check_num_entities();
void test_check_meshsets();
void test_check_groups();

int main()
{
    int result = 0;

    result += RUN_TEST( test_check_num_entities );
    result += RUN_TEST( test_check_meshsets );
    result += RUN_TEST( test_check_groups );

    return result;
}

void read_file( Interface& moab, const char* input_file )
{
    ErrorCode rval = moab.load_file( input_file );CHECK_ERR( rval );
}

void test_check_num_entities()
{
    ErrorCode rval;
    Core core;
    Interface* mbi = &core;
    read_file( core, test.c_str() );

    // check that number of verts created is 7
    Range verts;
    int vert_dim = 0;
    rval         = mbi->get_entities_by_dimension( 0, vert_dim, verts );CHECK_ERR( rval );
    CHECK_EQUAL( 7, (int)verts.size() );

    // check that number of tris created is 3
    Range tris;
    int tri_dim = 2;
    rval        = mbi->get_entities_by_dimension( 0, tri_dim, tris );CHECK_ERR( rval );
    CHECK_EQUAL( 3, (int)tris.size() );
}

void test_check_meshsets()
{
    ErrorCode rval;
    Core core;
    Interface* mbi = &core;
    read_file( core, test.c_str() );

    myGeomTool = new GeomTopoTool( mbi );

    Range ent_sets;
    rval = mbi->tag_get_handle( GEOM_DIMENSION_TAG_NAME, 1, MB_TYPE_INTEGER, geom_tag );CHECK_ERR( rval );
    rval = mbi->get_entities_by_type_and_tag( 0, MBENTITYSET, &geom_tag, NULL, 1, ent_sets );CHECK_ERR( rval );

    Range::iterator it;
    Range parents, children;
    int sense;
    int dim, num_surfs = 0, num_vols = 0;

    for( it = ent_sets.begin(); it != ent_sets.end(); ++it )
    {
        rval = mbi->tag_get_data( geom_tag, &( *it ), 1, &dim );

        if( dim == 2 )
        {
            num_surfs++;

            // check that one parent is created for each surface
            parents.clear();
            rval = mbi->get_parent_meshsets( *it, parents );CHECK_ERR( rval );
            CHECK_EQUAL( 1, (int)parents.size() );

            // check that sense of surface wrt parent is FORWARD = 1
            rval = myGeomTool->get_sense( *it, *parents.begin(), sense );CHECK_ERR( rval );
            CHECK_EQUAL( 1, sense );
        }
        else if( dim == 3 )
        {
            num_vols++;

            // check that one child is created for each volume
            children.clear();
            rval = mbi->get_child_meshsets( *it, children );CHECK_ERR( rval );
            CHECK_EQUAL( 1, (int)children.size() );
        }
    }

    // check that two surfaces and two volumes are created
    CHECK_EQUAL( 2, num_surfs );
    CHECK_EQUAL( 2, num_vols );

    delete myGeomTool;
}

void test_check_groups()
{
    ErrorCode rval;
    Core core;
    Interface* mbi = &core;
    read_file( core, shuttle.c_str() );

    // check that number of tris created is 616
    //  170 tris + 223 quads split into 2 tris = 616
    Range tris;
    int tri_dim = 2;
    rval        = mbi->get_entities_by_dimension( 0, tri_dim, tris );CHECK_ERR( rval );
    CHECK_EQUAL( 616, (int)tris.size() );

    // check that 11 mesh sets are created
    // 1 for global vert set + 1 for each of 10 groups
    Range ent_sets, mesh_sets;
    id_tag = mbi->globalId_tag();
    rval   = mbi->get_entities_by_type_and_tag( 0, MBENTITYSET, &id_tag, NULL, 1, ent_sets );

    CHECK_EQUAL( 11, (int)ent_sets.size() );
}