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test_fem.cc
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test_fem.cc
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/**
* @file fem.cc
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @date Mon Jul 19 10:55:49 2010
*
* @brief test of the fem class
*
* @section LICENSE
*
* <insert license here>
*
*/
/* -------------------------------------------------------------------------- */
#include <cstdlib>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "fem.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char *argv[]) {
MeshIOMSH mesh_io;
Mesh my_mesh(1);
mesh_io.read("line.msh", my_mesh);
FEM *fem = new FEM(my_mesh,1,"my_fem");
fem->initShapeFunctions();
std::cout << *fem << std::endl;
StaticMemory * st_mem = StaticMemory::getStaticMemory();
std::cout << *st_mem << std::endl;
Vector<Real> const_val(fem->getMesh().getNbNodes(), 2, "const_val");
Vector<Real> val_on_quad(0, 2, "val_on_quad");
Vector<Real> grad_on_quad(0, 2, "grad_on_quad");
Vector<Real> int_val_on_elem(0, 2, "int_val_on_elem");
Vector<Real> val_on_nodes_per_elem(fem->getMesh().getNbElement(_line_1), 2 * 2,"val_on_nodes_per_elem");
Vector<Real> int_val_on_nodes_per_elem(0, 2 * 2,"int_val_on_nodes_per_elem");
Vector<Real> assemble_val_on_nodes(0, 2,"assemble_val_on_nodes");
const Vector<Real> & shapes = fem->getShapes(_line_1);
for (UInt i = 0; i < const_val.getSize(); ++i) {
const_val.values[i * 2 + 0] = 1.;
const_val.values[i * 2 + 1] = 2.;
}
fem->interpolateOnQuadraturePoints(const_val, val_on_quad, 2, _line_1);
std::cout << const_val << std::endl;
std::cout << val_on_quad << std::endl;
fem->gradientOnQuadraturePoints(const_val, grad_on_quad, 2, _line_1);
std::cout << grad_on_quad << std::endl;
fem->integrate(val_on_quad, int_val_on_elem, 2, _line_1);
std::cout << int_val_on_elem << std::endl;
for (UInt el = 0; el < shapes.getSize(); ++el) {
val_on_nodes_per_elem.values[el * 4 + 0] = val_on_quad.values[el * 2 + 0] * shapes.values[el * 2 + 0];
val_on_nodes_per_elem.values[el * 4 + 1] = val_on_quad.values[el * 2 + 1] * shapes.values[el * 2 + 0];
val_on_nodes_per_elem.values[el * 4 + 2] = val_on_quad.values[el * 2 + 0] * shapes.values[el * 2 + 1];
val_on_nodes_per_elem.values[el * 4 + 3] = val_on_quad.values[el * 2 + 1] * shapes.values[el * 2 + 1];
}
std::cout << val_on_nodes_per_elem << std::endl;
fem->integrate(val_on_nodes_per_elem, int_val_on_nodes_per_elem, 4, _line_1);
std::cout << int_val_on_nodes_per_elem << std::endl;
fem->assembleVector(int_val_on_nodes_per_elem, assemble_val_on_nodes, 2, _line_1);
std::cout << assemble_val_on_nodes << std::endl;
delete fem;
finalize();
return EXIT_SUCCESS;
}

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