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rAKA/src/geometry/mesh_geom_factory_tmpl.hh
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mesh_geom_factory_tmpl.hh
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/**
* @file mesh_geom_factory_tmpl.hh
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @date creation: Thu Feb 26 2015
* @date last modification: Fri Mar 6 2015
*
* @brief Class for constructing the CGAL primitives of a mesh
*
* @section LICENSE
*
* Copyright (©) 2015 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef _AKANTU_MESH_GEOM_FACTORY_TMPL_HH__
#define _AKANTU_MESH_GEOM_FACTORY_TMPL_HH__
#include "mesh_geom_factory.hh"
#include "aka_common.hh"
#include "tree_type_helper.hh"
#include "triangle.hh"
#include "geom_helper_functions.hh"
#include <algorithm>
#include <CGAL/Cartesian.h>
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
typedef CGAL::Cartesian<Real> Cartesian;
template<UInt dim, ElementType type, class Primitive, class Kernel>
MeshGeomFactory<dim, type, Primitive, Kernel>::MeshGeomFactory(const Mesh & mesh) :
MeshGeomAbstract(mesh),
data_tree(NULL),
primitive_list()
{}
template<UInt dim, ElementType type, class Primitive, class Kernel>
MeshGeomFactory<dim, type, Primitive, Kernel>::~MeshGeomFactory() {
delete data_tree;
}
/**
* This function loops over the elements of `type` in the mesh and creates the
* AABB tree of geometrical primitves (`data_tree`).
*/
template<UInt dim, ElementType type, class Primitive, class Kernel>
void MeshGeomFactory<dim, type, Primitive, Kernel>::constructData() {
AKANTU_DEBUG_IN();
const GhostType ghost_type = _not_ghost;
primitive_list.clear();
UInt nb_nodes_per_element = mesh.getNbNodesPerElement(type);
const Array<UInt> & connectivity = mesh.getConnectivity(type, ghost_type);
const Array<Real> & nodes = mesh.getNodes();
Array<UInt>::const_vector_iterator begin = connectivity.begin(nb_nodes_per_element);
Array<UInt>::const_vector_iterator it = connectivity.begin(nb_nodes_per_element);
Array<UInt>::const_vector_iterator end = connectivity.end(nb_nodes_per_element);
// This loop builds the list of primitives
for (; it != end ; ++it) {
const Vector<UInt> & el_connectivity = *it;
Matrix<Real> node_coordinates(dim, nb_nodes_per_element);
for (UInt i = 0 ; i < nb_nodes_per_element ; i++)
for (UInt j = 0 ; j < dim ; j++)
node_coordinates(j, i) = nodes(el_connectivity(i), j);
addPrimitive(node_coordinates, it - begin);
}
delete data_tree;
data_tree = new typename TreeTypeHelper<Primitive, Kernel>::tree(primitive_list.begin(), primitive_list.end());
AKANTU_DEBUG_OUT();
}
// 2D and _triangle_3 implementation
template<>
void MeshGeomFactory<2, _triangle_3, Triangle<Cartesian>, Cartesian>::addPrimitive(
const Matrix<Real> & node_coordinates,
UInt id) {
TreeTypeHelper<Triangle<Cartesian>, Cartesian>::point_type a(node_coordinates(0, 0), node_coordinates(1, 0), 0.);
TreeTypeHelper<Triangle<Cartesian>, Cartesian>::point_type b(node_coordinates(0, 1), node_coordinates(1, 1), 0.);
TreeTypeHelper<Triangle<Cartesian>, Cartesian>::point_type c(node_coordinates(0, 2), node_coordinates(1, 2), 0.);
Triangle<Cartesian> t(a, b, c);
t.setId(id);
primitive_list.push_back(t);
}
// 3D and _tetrahedron_4 with triangles implementation
template<>
void MeshGeomFactory<3, _tetrahedron_4, Triangle<Cartesian>, Cartesian>::addPrimitive(
const Matrix<Real> & node_coordinates,
UInt id) {
TreeTypeHelper<Triangle<Cartesian>, Cartesian>::point_type
a(node_coordinates(0, 0), node_coordinates(1, 0), node_coordinates(2, 0)),
b(node_coordinates(0, 1), node_coordinates(1, 1), node_coordinates(2, 1)),
c(node_coordinates(0, 2), node_coordinates(1, 2), node_coordinates(2, 2)),
d(node_coordinates(0, 3), node_coordinates(1, 3), node_coordinates(2, 3));
Triangle<Cartesian>
t1(a, b, c),
t2(b, c, d),
t3(c, d, a),
t4(d, a, b);
t1.setId(id);
t2.setId(id);
t3.setId(id);
t4.setId(id);
primitive_list.push_back(t1);
primitive_list.push_back(t2);
primitive_list.push_back(t3);
primitive_list.push_back(t4);
}
__END_AKANTU__
#endif // _AKANTU_MESH_GEOM_FACTORY_TMPL_HH__
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