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fe_engine_inline_impl.hh
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Sat, May 25, 09:53

fe_engine_inline_impl.hh
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/**
* Copyright (©) 2010-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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/>.
*/
/* -------------------------------------------------------------------------- */
#include "element_class.hh"
//#include "fe_engine.hh"
#include "mesh.hh"
/* -------------------------------------------------------------------------- */
#include "element_type_conversion.hh"
/* -------------------------------------------------------------------------- */
// #ifndef __AKANTU_FE_ENGINE_INLINE_IMPL_CC__
// #define __AKANTU_FE_ENGINE_INLINE_IMPL_CC__
namespace akantu {
/* -------------------------------------------------------------------------- */
template <class Derived>
inline Real
FEEngine::getElementInradius(const Eigen::MatrixBase<Derived> & coord,
ElementType type) {
return tuple_dispatch<AllElementTypes>(
[&coord](auto && enum_type) -> Real {
constexpr ElementType type = aka::decay_v<decltype(enum_type)>;
return ElementClass<type>::getInradius(coord);
},
type);
}
/* -------------------------------------------------------------------------- */
inline Real FEEngine::getElementInradius(const Element & element) const {
auto spatial_dimension = mesh.getSpatialDimension();
auto positions = make_view(mesh.getNodes(), spatial_dimension).begin();
auto connectivity = mesh.getConnectivities().get(element);
Matrix<Real> coords(spatial_dimension, connectivity.size());
for (auto && data : zip(connectivity, coords)) {
std::get<1>(data) = positions[std::get<0>(data)];
}
return getElementInradius(coords, element.type);
}
/* -------------------------------------------------------------------------- */
inline constexpr auto FEEngine::getInterpolationType(ElementType type) {
return convertType<ElementType, InterpolationType>(type);
}
/* -------------------------------------------------------------------------- */
/// @todo rewrite this function in order to get the cohesive element
/// type directly from the facet
#if defined(AKANTU_COHESIVE_ELEMENT)
inline constexpr ElementType
FEEngine::getCohesiveElementType(ElementType type) {
return tuple_dispatch_with_default<ElementTypes_t<_ek_regular>>(
[&](auto && enum_type) -> ElementType {
constexpr ElementType type = aka::decay_v<decltype(enum_type)>;
return CohesiveFacetProperty<type>::cohesive_type;
},
type, [](auto && /*enum_type*/) { return _not_defined; });
}
#endif
/* -------------------------------------------------------------------------- */
#if defined(AKANTU_IGFEM)
} // akantu
#include "igfem_helper.hh"
namespace akantu {
inline Vector<ElementType> FEEngine::getIGFEMElementTypes(ElementType type) {
tuple_dispatch<ElementTypes_t<_ek_regular>>(
[&](auto && enum_type) {
constexpr ElementType type = aka::decay_v<decltype(enum_type)>;
return IGFEMHelper::getIGFEMElementTypes<type>();
},
type);
}
#endif
/* -------------------------------------------------------------------------- */
template <typename T>
void FEEngine::extractNodalToElementField(const Mesh & mesh,
const Array<T> & nodal_f,
Array<T> & elemental_f,
ElementType type,
GhostType ghost_type,
const Array<Int> & filter_elements) {
AKANTU_DEBUG_IN();
auto nb_nodes_per_element = Mesh::getNbNodesPerElement(type);
auto nb_degree_of_freedom = nodal_f.getNbComponent();
auto nb_element = mesh.getNbElement(type, ghost_type);
auto * conn_val = mesh.getConnectivity(type, ghost_type).data();
if (filter_elements != empty_filter) {
nb_element = filter_elements.size();
}
elemental_f.resize(nb_element);
const T * nodal_f_val = nodal_f.data();
T * f_val = elemental_f.data();
const Idx * el_conn;
for (Int el = 0; el < nb_element; ++el) {
if (filter_elements != empty_filter) {
el_conn = conn_val + filter_elements(el) * nb_nodes_per_element;
} else {
el_conn = conn_val + el * nb_nodes_per_element;
}
for (Int n = 0; n < nb_nodes_per_element; ++n) {
auto node = *(el_conn + n);
std::copy(nodal_f_val + node * nb_degree_of_freedom,
nodal_f_val + (node + 1) * nb_degree_of_freedom, f_val);
f_val += nb_degree_of_freedom;
}
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template <typename T>
void FEEngine::filterElementalData(const Mesh & mesh, const Array<T> & elem_f,
Array<T> & filtered_f, ElementType type,
GhostType ghost_type,
const Array<Int> & filter_elements) {
AKANTU_DEBUG_IN();
auto nb_element = mesh.getNbElement(type, ghost_type);
if (nb_element == 0) {
filtered_f.resize(0);
return;
}
auto nb_degree_of_freedom = elem_f.getNbComponent();
auto nb_data_per_element = elem_f.size() / nb_element;
if (filter_elements != empty_filter) {
nb_element = filter_elements.size();
}
filtered_f.resize(nb_element * nb_data_per_element);
const T * elem_f_val = elem_f.data();
T * f_val = filtered_f.data();
UInt el_offset;
for (Idx el = 0; el < nb_element; ++el) {
if (filter_elements != empty_filter) {
el_offset = filter_elements(el);
} else {
el_offset = el;
}
std::copy(elem_f_val +
el_offset * nb_data_per_element * nb_degree_of_freedom,
elem_f_val +
(el_offset + 1) * nb_data_per_element * nb_degree_of_freedom,
f_val);
f_val += nb_degree_of_freedom * nb_data_per_element;
}
AKANTU_DEBUG_OUT();
}
} // namespace akantu
//#endif /* __AKANTU_FE_ENGINE_INLINE_IMPL_CC__ */

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