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rAKA/test/test_igfem/test_interpolate.cc
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test_interpolate.cc
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/**
* @file test_interpolate.cc
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
*
* @brief test the interpolation function of the igfem elements
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "shape_igfem.hh"
#include "integrator_gauss_igfem.hh"
#include "fe_engine.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "dumper_paraview.hh"
#include "dumper_nodal_field.hh"
/* -------------------------------------------------------------------------- */
#include <cstdlib>
#include <fstream>
#include <iostream>
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char *argv[]) {
initialize(argc, argv);
const ElementType type_igfem = _igfem_triangle_4;
const ElementType type_regular = _triangle_3;
/// debug::setDebugLevel(dblTest);
UInt dim = ElementClass<type_igfem>::getSpatialDimension();
// create a mesh that containes one IGFEM triangle 4
UInt nb_elements_igfem = 1;
UInt nb_elements_regular = 1;
UInt nb_nodes = 5;
Mesh mesh(dim);
std::cout << "Generating mesh..." << std::endl;
Array<Real> & nodes = const_cast<Array<Real> &>(mesh.getNodes());
nodes.resize(nb_nodes);
mesh.addConnectivityType(type_regular);
mesh.addConnectivityType(type_igfem);
Array<UInt> & connectivity_igfem = const_cast<Array<UInt> &>(mesh.getConnectivity(type_igfem));
connectivity_igfem.resize(nb_elements_igfem);
Array<UInt> & connectivity_regular = const_cast<Array<UInt> &>(mesh.getConnectivity(type_regular));
connectivity_regular.resize(nb_elements_regular);
// set the nodal coordinates
nodes.storage()[0] = 0.;
nodes.storage()[1] = 0.;
nodes.storage()[2] = 1.;
nodes.storage()[3] = 0.;
nodes.storage()[4] = 0.;
nodes.storage()[5] = 1.;
nodes.storage()[6] = 0.5;
nodes.storage()[7] = 0.5;
nodes.storage()[8] = -1.;
// set the element connectivity
// first element
connectivity_igfem[0] = 0;
connectivity_igfem[1] = 1;
connectivity_igfem[2] = 2;
connectivity_igfem[3] = 3;
// second element
connectivity_regular[0] = 0;
connectivity_regular[1] = 2;
connectivity_regular[2] = 4;
FEEngine *fem = new FEEngineTemplate<IntegratorGauss,ShapeLagrange,_ek_igfem>(mesh, dim, "my_fem");
std::stringstream outfilename; outfilename << "out_" << type_igfem << ".txt";
std::ofstream my_file(outfilename.str().c_str());
fem->initShapeFunctions();
std::cout << *fem << std::endl;
Array<Real> const_val(fem->getMesh().getNbNodes(), 2, "const_val");
UInt nb_quadrature_points = fem->getNbQuadraturePoints(type_igfem) * nb_elements_igfem;
Array<Real> val_on_quad(nb_quadrature_points, 2, "val_on_quad");
// for (UInt i = 0; i < const_val.getSize(); ++i) {
// const_val.storage()[i * 2 + 0] = 1.;
// const_val.storage()[i * 2 + 1] = 2.;
// }
const_val.storage()[0] = 1.;
const_val.storage()[1] = 2.;
const_val.storage()[2] = 1.;
const_val.storage()[3] = 2.;
const_val.storage()[4] = 1.;
const_val.storage()[5] = 2.;
const_val.storage()[6] = 0.;
const_val.storage()[7] = 0.;
const_val.storage()[8] = 1.;
const_val.storage()[9] = 2.;
fem->interpolateOnQuadraturePoints(const_val, val_on_quad, 2, type_igfem);
my_file << const_val << std::endl;
my_file << val_on_quad << std::endl;
// DumperParaview dumper_regular("mesh");
DumperParaview dumper_igfem("mesh");
dumper_igfem.registerMesh(mesh, dim, _not_ghost, _ek_igfem);
dumper_igfem.registerMesh(mesh, dim, _not_ghost, _ek_regular);
dumper_igfem.registerField("displacement", new dumper::NodalField<Real,false>(const_val, 0, 0));
// dumper_regular.registerField("displacement", new dumper::NodalField<Real,false>(const_val, 0, 0));
dumper_igfem.dump();
// dumper_regular.dump();
// // interpolate coordinates
// Array<Real> coord_on_quad(nb_quadrature_points, mesh.getSpatialDimension(), "coord_on_quad");
// fem->interpolateOnQuadraturePoints(mesh.getNodes(),
// coord_on_quad,
// mesh.getSpatialDimension(),
// type);
// my_file << mesh.getNodes() << std::endl;
// my_file << coord_on_quad << std::endl;
delete fem;
finalize();
return EXIT_SUCCESS;
}
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