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MOAB: Mesh Oriented datABase
(version 5.4.1)
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MOAB: Mesh Oriented datABase
(version 5.4.1)
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#include <iostream>#include <sstream>#include <ctime>#include <cstdlib>#include <cstdio>#include <cstring>#include "moab/Core.hpp"#include "moab/Interface.hpp"#include "moab/IntxMesh/Intx2MeshOnSphere.hpp"#include <cmath>#include "TestUtil.hpp"#include "moab/ParallelComm.hpp"#include "moab/ProgOptions.hpp"#include "MBParallelConventions.h"#include "moab/ReadUtilIface.hpp"#include "MBTagConventions.hpp"#include "moab/IntxMesh/IntxUtils.hpp"
Include dependency graph for par_intx_sph.cpp:Go to the source code of this file.
Functions | |
| std::string | input_mesh_file ("Homme_2pt.h5m") |
| std::string | mpas_file ("mpas_p8.h5m") |
| void | test_intx_in_parallel_elem_based () |
| void | test_intx_mpas () |
| int | main (int argc, char **argv) |
| ErrorCode | manufacture_lagrange_mesh_on_sphere (Interface *mb, EntityHandle euler_set) |
Variables | |
| double | EPS1 = 0.2 |
| double | CubeSide = 6. |
| double | radius |
| std::string input_mesh_file | ( | "Homme_2pt.h5m" | ) |
| int main | ( | int | argc, |
| char ** | argv | ||
| ) |
Definition at line 44 of file par_intx_sph.cpp.
References CubeSide, EPS1, input_mesh_file(), radius, RUN_TEST, test_intx_in_parallel_elem_based(), and test_intx_mpas().
{
MPI_Init( &argc, &argv );
EPS1 = 0.2;
int result = 0;
if( argc > 1 )
{
int index = 1;
while( index < argc )
{
if( !strcmp( argv[index], "-eps" ) ) // this is for box error
{
EPS1 = atof( argv[++index] );
}
if( !strcmp( argv[index], "-input" ) )
{
input_mesh_file = argv[++index];
}
if( !strcmp( argv[index], "-cube" ) )
{
CubeSide = atof( argv[++index] );
}
index++;
}
}
radius = CubeSide / 2 * sqrt( 3. );
result += RUN_TEST( test_intx_in_parallel_elem_based );
radius = 1.;
result += RUN_TEST( test_intx_mpas );
MPI_Finalize();
return result;
}
| ErrorCode manufacture_lagrange_mesh_on_sphere | ( | Interface * | mb, |
| EntityHandle | euler_set | ||
| ) |
Definition at line 80 of file par_intx_sph.cpp.
References moab::Range::begin(), moab::IntxUtils::cart_to_spherical(), CHECK_ERR, moab::Range::end(), ErrorCode, moab::Interface::get_connectivity(), moab::Interface::get_coords(), moab::Interface::get_entities_by_dimension(), moab::IntxUtils::SphereCoords::lat, moab::CartVect::length(), moab::IntxUtils::SphereCoords::lon, MB_TAG_CREAT, MB_TAG_DENSE, MB_TYPE_DOUBLE, radius, moab::Range::size(), t, T, moab::Interface::tag_get_handle(), and moab::Interface::tag_iterate().
{
/*
* get all quads first, then vertices, then move them on the surface of the sphere
* radius is in, it comes from MeshKit/python/examples/manufHomme.py :
* length = 6.
* each edge of the cube will be divided using this meshcount
* meshcount = 11
* circumscribed sphere radius
* radius = length * math.sqrt(3) /2
*/
// radius = CubeSide/2*sqrt(3.);// our value depends on cube side
Range quads;
ErrorCode rval = mb->get_entities_by_dimension( euler_set, 2, quads );CHECK_ERR( rval );
Range connecVerts;
rval = mb->get_connectivity( quads, connecVerts );CHECK_ERR( rval );
// the LOC tag, should be provided by the user?
Tag tagh = 0;
std::string tag_name( "DP" );
rval = mb->tag_get_handle( tag_name.c_str(), 3, MB_TYPE_DOUBLE, tagh, MB_TAG_DENSE | MB_TAG_CREAT );CHECK_ERR( rval );
void* data; // pointer to the LOC in memory, for each vertex
int count;
rval = mb->tag_iterate( tagh, connecVerts.begin(), connecVerts.end(), count, data );CHECK_ERR( rval );
// here we are checking contiguity
assert( count == (int)connecVerts.size() );
double* ptr_DP = (double*)data;
// get the coordinates of the old mesh, and move it around the sphere in the same way as in the
// python script
// now put the vertices in the right place....
// int vix=0; // vertex index in new array
double t = 0.1, T = 5; // check the script
double time = 0.05;
double rot = M_PI / 10;
for( Range::iterator vit = connecVerts.begin(); vit != connecVerts.end(); ++vit )
{
EntityHandle oldV = *vit;
CartVect posi;
rval = mb->get_coords( &oldV, 1, &( posi[0] ) );CHECK_ERR( rval );
// do some mumbo jumbo, as in python script
moab::IntxUtils::SphereCoords sphCoord = moab::IntxUtils::cart_to_spherical( posi );
double lat1 = sphCoord.lat - 2 * M_PI * t / T; // 0.1/5
double uu = 3 * radius / T * pow( sin( lat1 ), 2 ) * sin( 2 * sphCoord.lon ) * cos( M_PI * t / T );
uu += 2 * M_PI * cos( sphCoord.lon ) / T;
double vv = 3 * radius / T * ( sin( 2 * lat1 ) ) * cos( sphCoord.lon ) * cos( M_PI * t / T );
double vx = -uu * sin( sphCoord.lon ) - vv * sin( sphCoord.lat ) * cos( sphCoord.lon );
double vy = -uu * cos( sphCoord.lon ) - vv * sin( sphCoord.lat ) * sin( sphCoord.lon );
double vz = vv * cos( sphCoord.lat );
posi = posi + time * CartVect( vx, vy, vz );
double x2 = posi[0] * cos( rot ) - posi[1] * sin( rot );
double y2 = posi[0] * sin( rot ) + posi[1] * cos( rot );
CartVect newPos( x2, y2, posi[2] );
double len1 = newPos.length();
newPos = radius * newPos / len1;
ptr_DP[0] = newPos[0];
ptr_DP[1] = newPos[1];
ptr_DP[2] = newPos[2];
ptr_DP += 3; // increment to the next node
}
return rval;
}
| std::string mpas_file | ( | "mpas_p8.h5m" | ) |
Referenced by test_intx_mpas().
| void test_intx_in_parallel_elem_based | ( | ) |
| void test_intx_mpas | ( | ) |
Definition at line 216 of file par_intx_sph.cpp.
References moab::IntxAreaUtils::area_on_sphere(), moab::ParallelComm::check_all_shared_handles(), CHECK_ERR, moab::Intx2Mesh::create_departure_mesh_2nd_alg(), moab::Interface::create_meshset(), moab::IntxUtils::enforce_convexity(), EPS1, ErrorCode, example, moab::Intx2Mesh::FindMaxEdges(), moab::ParallelComm::get_pcomm(), moab::Intx2Mesh::intersect_meshes(), moab::Interface::load_file(), manufacture_lagrange_mesh_on_sphere(), MESHSET_SET, mpas_file(), moab::ParallelComm::proc_config(), moab::ProcConfig::proc_rank(), radius, moab::Intx2Mesh::set_box_error(), moab::Intx2Mesh::set_error_tolerance(), moab::Intx2MeshOnSphere::set_radius_destination_mesh(), moab::Intx2MeshOnSphere::set_radius_source_mesh(), and moab::Interface::write_file().
Referenced by main().
{
std::string opts = std::string( "PARALLEL=READ_PART;PARTITION=PARALLEL_PARTITION" ) +
std::string( ";PARALLEL_RESOLVE_SHARED_ENTS" );
Core moab;
Interface& mb = moab;
EntityHandle euler_set;
ErrorCode rval;
rval = mb.create_meshset( MESHSET_SET, euler_set );CHECK_ERR( rval );
std::string example( TestDir + "unittest/" + mpas_file );
rval = mb.load_file( example.c_str(), &euler_set, opts.c_str() );
ParallelComm* pcomm = ParallelComm::get_pcomm( &mb, 0 );
rval = pcomm->check_all_shared_handles();CHECK_ERR( rval );
// everybody will get a DP tag, including the non owned entities; so exchange tags is not
// required for LOC (here)
rval = manufacture_lagrange_mesh_on_sphere( &mb, euler_set );CHECK_ERR( rval );
int rank = pcomm->proc_config().proc_rank();
std::stringstream ste;
ste << "initial" << rank << ".vtk";
mb.write_file( ste.str().c_str(), 0, 0, &euler_set, 1 );
Intx2MeshOnSphere worker( &mb );
// double radius= CubeSide/2 * sqrt(3.) ; // input
worker.set_radius_source_mesh( radius );
worker.set_radius_destination_mesh( radius );
worker.set_box_error( EPS1 ); //
// worker.SetEntityType(MBQUAD);
worker.set_error_tolerance( radius * 1.e-8 );
std::cout << "error tolerance epsilon_1=" << radius * 1.e-8 << "\n";
// worker.locate_departure_points(euler_set);
rval = worker.FindMaxEdges( euler_set, euler_set );
// we need to make sure the covering set is bigger than the euler mesh
EntityHandle covering_lagr_set;
rval = mb.create_meshset( MESHSET_SET, covering_lagr_set );CHECK_ERR( rval );
// set pcomm
worker.set_parallel_comm( pcomm );
rval = worker.create_departure_mesh_2nd_alg( euler_set, covering_lagr_set );CHECK_ERR( rval );
std::stringstream ss;
ss << "partial" << rank << ".vtk";
mb.write_file( ss.str().c_str(), 0, 0, &covering_lagr_set, 1 );
rval = moab::IntxUtils::enforce_convexity( &mb, covering_lagr_set, rank );CHECK_ERR( rval );
std::stringstream ss2;
ss2 << "partialConvex" << rank << ".vtk";
mb.write_file( ss2.str().c_str(), 0, 0, &covering_lagr_set, 1 );
EntityHandle outputSet;
rval = mb.create_meshset( MESHSET_SET, outputSet );CHECK_ERR( rval );
rval = worker.intersect_meshes( covering_lagr_set, euler_set, outputSet );CHECK_ERR( rval );
// std::string opts_write("PARALLEL=WRITE_PART");
// rval = mb.write_file("manuf.h5m", 0, opts_write.c_str(), &outputSet, 1);
// std::string opts_write("");
std::stringstream outf;
outf << "intersect" << rank << ".h5m";
rval = mb.write_file( outf.str().c_str(), 0, 0, &outputSet, 1 );
IntxAreaUtils areaAdaptor;
double intx_area = areaAdaptor.area_on_sphere( &mb, outputSet, radius );
double arrival_area = areaAdaptor.area_on_sphere( &mb, euler_set, radius );
std::cout << "On rank : " << rank << " arrival area: " << arrival_area << " intersection area:" << intx_area
<< " rel error: " << fabs( ( intx_area - arrival_area ) / arrival_area ) << "\n";CHECK_ERR( rval );
}
| double CubeSide = 6. |
Definition at line 39 of file par_intx_sph.cpp.
| double EPS1 = 0.2 |
Definition at line 36 of file par_intx_sph.cpp.
| double radius |
Definition at line 40 of file par_intx_sph.cpp.
1.7.6.1