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mesh_sphere_intersector_tmpl.hh
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mesh_sphere_intersector_tmpl.hh
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/**
* @file mesh_sphere_intersector_tmpl.hh
*
* @author Clément Roux-Langlois <clement.roux@epfl.ch>
*
* @date creation: Wed june 10 2015
* @date last modification: Wed June 17 2015
*
* @brief Computation of mesh intersection with spheres
*
* @section LICENSE
*
* Copyright (©) 2010-2015 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_SPHERE_INTERSECTOR_TMPL_HH__
#define __AKANTU_MESH_SPHERE_INTERSECTOR_TMPL_HH__
#include "aka_common.hh"
#include "mesh_geom_common.hh"
#include "tree_type_helper.hh"
__BEGIN_AKANTU__
template<UInt dim, ElementType type>
MeshSphereIntersector<dim, type>::MeshSphereIntersector(const Mesh & mesh):
parent_type(mesh),
new_node_per_elem(0, 1 + 4*(dim-1)),
nb_nodes_fem(mesh.getNodes().getSize())
{
this->constructData();
#if defined(AKANTU_IGFEM)
this->addIgfemTypes();
#endif
for(Mesh::type_iterator it = mesh.firstType(); it != mesh.lastType(); ++it){
#if defined(AKANTU_IGFEM)
if( (*it != _triangle_3) && (*it != _segment_2) && (*it != _igfem_triangle_4)
&& (*it != _igfem_triangle_5) )
AKANTU_DEBUG_ERROR("Not ready for mesh type " << *it);
#else
if( (*it != _triangle_3) && (*it != _segment_2) )
AKANTU_DEBUG_ERROR("Not ready for mesh type " << *it);
#endif
}
}
template<UInt dim, ElementType type>
MeshSphereIntersector<dim, type>::~MeshSphereIntersector()
{}
template<UInt dim, ElementType type>
void MeshSphereIntersector<dim, type>::constructData() {
this->new_node_per_elem.resize(this->mesh.getConnectivity(type).getSize());
this->new_node_per_elem.clear();
MeshGeomIntersector<dim, type, Line_arc<SK>, SK::Sphere_3, SK>::constructData();
}
template<UInt dim, ElementType type>
void MeshSphereIntersector<dim, type>::computeIntersectionQuery(const SK::Sphere_3 & query) {
AKANTU_DEBUG_IN();
Array<Real> & nodes = const_cast<Array<Real> &>(this->mesh.getNodes());
UInt nb_node = nodes.getSize() ;
Real tol = 1e-10;
typedef boost::variant<pair_type> sk_inter_res;
TreeTypeHelper<Line_arc<Spherical>, Spherical>::const_iterator
it = this->factory.getPrimitiveList().begin(),
end= this->factory.getPrimitiveList().end();
NewNodesEvent new_nodes;
for(; it!=end; ++it){
std::list<sk_inter_res> s_results;
CGAL::intersection(*it, query, std::back_inserter(s_results));
if(s_results.size()==1){ // just one point
if (pair_type * pair = boost::get<pair_type>(&s_results.front())){
if(pair->second==1){ // not a point tangent to the sphere
// Addition of the new node
Vector<Real> new_node(dim, 0.0);
SK::Circular_arc_point_3 arc_point = pair->first;
new_node(0) = to_double(arc_point.x());
new_node(1) = to_double(arc_point.y());
bool is_on_mesh = false, is_new = true;
UInt n = nb_nodes_fem-1;
for(; n != nb_node; ++n){
if( ( pow((new_node(0)-nodes(n,0)),2) +
pow((new_node(1)-nodes(n,1)),2) ) < pow(tol,2) ){
is_new = false;
break;
}
}
Real x1 = to_double(it->source().x()), y1 = to_double(it->source().y()),
x2 = to_double(it->target().x()), y2 = to_double(it->target().y()),
l = pow( pow((new_node(0)-x1),2) + pow((new_node(1)-y1),2), 1/2);
if( ( ( pow((new_node(0)-x1),2) + pow((new_node(1)-y1),2) ) < pow(l*tol,2) )
|| ( ( pow((new_node(0)-x2),2) + pow((new_node(1)-y2),2) ) < pow(l*tol,2) ) ){
is_on_mesh = true;
is_new = false;
}
if(is_new){
nodes.push_back(new_node);
new_nodes.getList().push_back(nb_node);
nb_node += 1 ;
}
if(!is_on_mesh){
new_node_per_elem(it->id(), 0) += 1;
new_node_per_elem(it->id(), ( 2*new_node_per_elem(it->id(),0)) - 1 ) = n ;
new_node_per_elem(it->id(), 2*new_node_per_elem(it->id(),0) ) = it->segId() ;
}
}
}
}
}
const_cast<Mesh &>(this->mesh).sendEvent(new_nodes);
AKANTU_DEBUG_OUT();
}
template<UInt dim, ElementType type>
void MeshSphereIntersector<dim, type>::removeAdditionnalNodes() {
AKANTU_DEBUG_IN();
RemovedNodesEvent remove_nodes(this->mesh);
Array<UInt> & nodes_removed = remove_nodes.getList();
Array<UInt> & new_numbering = remove_nodes.getNewNumbering();
UInt nnod = 0;
for(; nnod != nb_nodes_fem ; ++nnod){
new_numbering(nnod) = nnod ;
}
for(nnod = nb_nodes_fem ; nnod != this->mesh.getNodes().getSize(); ++nnod){
new_numbering(nnod) = UInt(-1) ;
nodes_removed.push_back(nnod);
}
const_cast<Mesh &>(this->mesh).sendEvent(remove_nodes);
AKANTU_DEBUG_OUT();
}
#if defined(AKANTU_IGFEM)
template<UInt dim, ElementType type>
void MeshSphereIntersector<dim, type>::addIgfemTypes() {
AKANTU_DEBUG_IN();
// Addition of the igfem types in the mesh
//TODO Mesh & mesh_no_const = const_cast<Mesh &>(this->mesh); or remove init const...
const_cast<Mesh &>(this->mesh).addConnectivityType(_igfem_triangle_4, _not_ghost);
const_cast<Mesh &>(this->mesh).addConnectivityType(_igfem_triangle_4, _ghost);
const_cast<Mesh &>(this->mesh).addConnectivityType(_igfem_triangle_5, _not_ghost);
const_cast<Mesh &>(this->mesh).addConnectivityType(_igfem_triangle_5, _ghost);
AKANTU_DEBUG_OUT();
}
template<UInt dim, ElementType type>
void MeshSphereIntersector<dim, type>::buildIgfemMesh(const std::list<SK::Sphere_3> & query_list) {
AKANTU_DEBUG_IN();
this->computeIntersectionQueryList(query_list);
Array<UInt> connec_type_tmpl = this->mesh.getConnectivity(type);
Array<UInt> &
connec_igfem_tri4 = const_cast<Array<UInt> &>(this->mesh.getConnectivity(_igfem_triangle_4)),
& connec_igfem_tri5 = const_cast<Array<UInt> &>(this->mesh.getConnectivity(_igfem_triangle_5)),
& connec_tri3 = const_cast<Array<UInt> &>(this->mesh.getConnectivity(_triangle_3));
Element element_tri3(_triangle_3, 0, _not_ghost, _ek_regular),
element_tri4(_igfem_triangle_4, 0, _not_ghost, _ek_igfem),
element_tri5(_igfem_triangle_5, 0, _not_ghost, _ek_igfem);
NewElementsEvent new_elements;
UInt n_new_el = 0;
Array<Element> & new_elements_list = new_elements.getList() ;
new_elements.getList().extendComponentsInterlaced(2, 1);
RemovedElementsEvent remove_elem(this->mesh);
remove_elem.getNewNumbering().alloc(connec_type_tmpl.getSize(), 1, type, _not_ghost);
Array<UInt> & new_numbering = remove_elem.getNewNumbering(type, _not_ghost);
UInt new_nb_type_tmpl = 0; // Meter of the number of element (type) will we loop on elements
for(UInt nel=0; nel != new_node_per_elem.getSize(); ++nel){
if( (type != _triangle_3) && (new_node_per_elem(nel,0)==0) ){
Element element_type_tmpl(type, 0, _not_ghost);
new_elements_list.resize(n_new_el+1);
Vector<UInt> ctri3(3);
ctri3(0) = connec_type_tmpl(nel,0);
ctri3(1) = connec_type_tmpl(nel,1);
ctri3(2) = connec_type_tmpl(nel,2);
UInt nb_tri3 = connec_tri3.getSize();
connec_tri3.push_back(ctri3);
element_tri3.element = nb_tri3;
new_elements_list(n_new_el,0) = element_tri3;
element_type_tmpl.element = nel;
new_elements_list(n_new_el,1) = element_type_tmpl;
new_numbering(nel) = UInt(-1);
++n_new_el;
}
else if(new_node_per_elem(nel,0)!=0){
Element element_type_tmpl(type, 0, _not_ghost);
new_elements_list.resize(n_new_el+1);
switch(new_node_per_elem(nel,0)){
case 1 :{
Vector<UInt> ctri4(4);
switch(new_node_per_elem(nel,2)){
case 1 :
ctri4(0) = connec_type_tmpl(nel,2);
ctri4(1) = connec_type_tmpl(nel,0);
ctri4(2) = connec_type_tmpl(nel,1);
break;
case 2 :
ctri4(0) = connec_type_tmpl(nel,0);
ctri4(1) = connec_type_tmpl(nel,1);
ctri4(2) = connec_type_tmpl(nel,2);
break;
case 3 :
ctri4(0) = connec_type_tmpl(nel,1);
ctri4(1) = connec_type_tmpl(nel,2);
ctri4(2) = connec_type_tmpl(nel,0);
break;
default :
AKANTU_DEBUG_ERROR("A triangle have only 3 segments not "<< new_node_per_elem(nel,2));
break;
}
ctri4(3) = new_node_per_elem(nel,1);
UInt nb_tri4 = connec_igfem_tri4.getSize();
connec_igfem_tri4.push_back(ctri4);
element_tri4.element = nb_tri4;
//new_elements.getList().push_back(element_tri4);
new_elements_list(n_new_el,0) = element_tri4;
break;
}
case 2 :{
Vector<UInt> ctri5(5);
if( (new_node_per_elem(nel,2)==1) && (new_node_per_elem(nel,4)==2) ){
ctri5(0) = connec_type_tmpl(nel,1);
ctri5(1) = connec_type_tmpl(nel,2);
ctri5(2) = connec_type_tmpl(nel,0);
ctri5(3) = new_node_per_elem(nel,3);
ctri5(4) = new_node_per_elem(nel,1);
}
else if((new_node_per_elem(nel,2)==1) && (new_node_per_elem(nel,4)==3)){
ctri5(0) = connec_type_tmpl(nel,0);
ctri5(1) = connec_type_tmpl(nel,1);
ctri5(2) = connec_type_tmpl(nel,2);
ctri5(3) = new_node_per_elem(nel,1);
ctri5(4) = new_node_per_elem(nel,3);
}
else if((new_node_per_elem(nel,2)==2) && (new_node_per_elem(nel,4)==3)){
ctri5(0) = connec_type_tmpl(nel,2);
ctri5(1) = connec_type_tmpl(nel,0);
ctri5(2) = connec_type_tmpl(nel,1);
ctri5(3) = new_node_per_elem(nel,3);
ctri5(4) = new_node_per_elem(nel,1);
}
else if((new_node_per_elem(nel,2)==2) && (new_node_per_elem(nel,4)==1)){
ctri5(0) = connec_type_tmpl(nel,1);
ctri5(1) = connec_type_tmpl(nel,2);
ctri5(2) = connec_type_tmpl(nel,0);
ctri5(3) = new_node_per_elem(nel,1);
ctri5(4) = new_node_per_elem(nel,3);
}
else if((new_node_per_elem(nel,2)==3) && (new_node_per_elem(nel,4)==1)){
ctri5(0) = connec_type_tmpl(nel,0);
ctri5(1) = connec_type_tmpl(nel,1);
ctri5(2) = connec_type_tmpl(nel,2);
ctri5(3) = new_node_per_elem(nel,3);
ctri5(4) = new_node_per_elem(nel,1);
}
else if((new_node_per_elem(nel,2)==3) && (new_node_per_elem(nel,4)==2)){
ctri5(0) = connec_type_tmpl(nel,2);
ctri5(1) = connec_type_tmpl(nel,0);
ctri5(2) = connec_type_tmpl(nel,1);
ctri5(3) = new_node_per_elem(nel,1);
ctri5(4) = new_node_per_elem(nel,3);
}
else{
AKANTU_DEBUG_ERROR("A triangle have only 3 segments not "<< new_node_per_elem(nel,2) << "and" << new_node_per_elem(nel,4));
}
UInt nb_tri5 = connec_igfem_tri5.getSize();
connec_igfem_tri5.push_back(ctri5);
element_tri5.element = nb_tri5;
//new_elements.getList().push_back(element_tri5);
new_elements_list(n_new_el,0) = element_tri5;
break;
}
default:
AKANTU_DEBUG_ERROR("Igfem cannot add "<< new_node_per_elem(nel,0) << " nodes to triangles");
break;
}
element_type_tmpl.element = nel;
new_elements_list(n_new_el,1) = element_type_tmpl;
remove_elem.getList().push_back(element_type_tmpl);
new_numbering(nel) = UInt(-1);
++n_new_el;
}
else{
new_numbering(nel) = new_nb_type_tmpl;
++new_nb_type_tmpl;
}
}
const_cast<Mesh &>(this->mesh).sendEvent(new_elements);
const_cast<Mesh &>(this->mesh).sendEvent(remove_elem);
AKANTU_DEBUG_OUT();
}
#endif
__END_AKANTU__
#endif // __AKANTU_MESH_SPHERE_INTERSECTOR_TMPL_HH__

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