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mesh_utils.hh
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mesh_utils.hh
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/**
* @file mesh_utils.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Dana Christen <dana.christen@epfl.ch>
* @author David Simon Kammer <david.kammer@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Leonardo Snozzi <leonardo.snozzi@epfl.ch>
* @author Marco Vocialta <marco.vocialta@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Sun Dec 03 2017
*
* @brief All mesh utils necessary for various tasks
*
*
* Copyright (©) 2010-2018 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "aka_csr.hh"
#include "mesh.hh"
/* -------------------------------------------------------------------------- */
#include <vector>
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_MESH_UTILS_HH__
#define __AKANTU_MESH_UTILS_HH__
namespace akantu {
class MeshUtils {
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// build a CSR<Element> that contains for each node the list of connected
/// elements of a given spatial dimension
static void buildNode2Elements(const Mesh & mesh, CSR<Element> & node_to_elem,
UInt spatial_dimension = _all_dimensions);
/// build a CSR<UInt> that contains for each node the number of
/// the connected elements of a given ElementType
static void
buildNode2ElementsElementTypeMap(const Mesh & mesh, CSR<UInt> & node_to_elem,
const ElementType & type,
const GhostType & ghost_type = _not_ghost);
/// build the facets elements on the boundaries of a mesh
static void buildFacets(Mesh & mesh);
/// build all the facets elements: boundary and internals and store them in
/// the mesh_facets for element of dimension from_dimension to to_dimension
static void buildAllFacets(const Mesh & mesh, Mesh & mesh_facets,
UInt from_dimension, UInt to_dimension);
/// build all the facets elements: boundary and internals and store them in
/// the mesh_facets
static void buildAllFacets(const Mesh & mesh, Mesh & mesh_facets,
UInt to_dimension = 0);
/// build facets for a given spatial dimension
static void buildFacetsDimension(const Mesh & mesh, Mesh & mesh_facets,
bool boundary_only, UInt dimension);
/// take the local_connectivity array as the array of local and ghost
/// connectivity, renumber the nodes and set the connectivity of the mesh
static void renumberMeshNodes(Mesh & mesh, Array<UInt> & local_connectivities,
UInt nb_local_element, UInt nb_ghost_element,
ElementType type, Array<UInt> & old_nodes);
/// compute pbc pair for a given direction
static void computePBCMap(const Mesh & mymesh, const UInt dir,
std::map<UInt, UInt> & pbc_pair);
/// compute pbc pair for a surface pair
static void computePBCMap(const Mesh & mymesh,
const std::pair<ID, ID> & surface_pair,
std::map<UInt, UInt> & pbc_pair);
/// remove not connected nodes /!\ this functions renumbers the nodes.
static void purifyMesh(Mesh & mesh);
#if defined(AKANTU_COHESIVE_ELEMENT)
/// function to insert cohesive elements on the selected facets
/// @return number of facets that have been doubled
static UInt
insertCohesiveElements(Mesh & mesh, Mesh & mesh_facets,
const ElementTypeMapArray<bool> & facet_insertion,
Array<UInt> & doubled_nodes,
Array<Element> & new_elements,
bool only_double_facets);
#endif
/// fill the subelement to element and the elements to subelements data
static void fillElementToSubElementsData(Mesh & mesh);
/// flip facets based on global connectivity
static void flipFacets(Mesh & mesh_facets,
const ElementTypeMapArray<UInt> & global_connectivity,
GhostType gt_facet);
/// provide list of elements around a node and check if a given
/// facet is reached
template <bool third_dim_points>
static bool findElementsAroundSubfacet(
const Mesh & mesh_facets, const Element & starting_element,
const Element & end_facet, const Vector<UInt> & subfacet_connectivity,
std::vector<Element> & elem_list, std::vector<Element> & facet_list,
std::vector<Element> * subfacet_list = nullptr);
/// function to check if a node belongs to a given element
static inline bool hasElement(const Vector<UInt> & nodes_element,
const Vector<UInt> & nodes);
/// reset facet_to_double arrays in the Mesh
static void resetFacetToDouble(Mesh & mesh_facets);
private:
/// match pairs that are on the associated pbc's
static void matchPBCPairs(const Mesh & mymesh, const UInt dir,
Array<UInt> & selected_left,
Array<UInt> & selected_right,
std::map<UInt, UInt> & pbc_pair);
/// function used by all the renumbering functions
static void
renumberNodesInConnectivity(Array<UInt> & list_nodes, UInt nb_nodes,
std::map<UInt, UInt> & renumbering_map);
/// update facet_to_subfacet
static void updateFacetToSubfacet(Mesh & mesh_facets,
ElementType type_subfacet,
GhostType gt_subfacet, bool facet_mode);
/// update subfacet_to_facet
static void updateSubfacetToFacet(Mesh & mesh_facets,
ElementType type_subfacet,
GhostType gt_subfacet, bool facet_mode);
/// function to double a given facet and update the list of doubled
/// nodes
static void doubleFacet(Mesh & mesh, Mesh & mesh_facets, UInt facet_dimension,
Array<UInt> & doubled_nodes, bool facet_mode);
/// function to double a subfacet given start and end index for
/// local facet_to_subfacet vector, and update the list of doubled
/// nodes
template <UInt spatial_dimension>
static void doubleSubfacet(Mesh & mesh, Mesh & mesh_facets,
Array<UInt> & doubled_nodes);
/// double a node
static void doubleNodes(Mesh & mesh, const std::vector<UInt> & old_nodes,
Array<UInt> & doubled_nodes);
/// fill facet_to_double array in the mesh
/// returns the number of facets to be doubled
static UInt
updateFacetToDouble(Mesh & mesh_facets,
const ElementTypeMapArray<bool> & facet_insertion);
/// find subfacets to be doubled
template <bool subsubfacet_mode>
static void findSubfacetToDouble(Mesh & mesh_facets);
/// double facets (points) in 1D
static void doublePointFacet(Mesh & mesh, Mesh & mesh_facets,
Array<UInt> & doubled_nodes);
#if defined(AKANTU_COHESIVE_ELEMENT)
/// update cohesive element data
static void updateCohesiveData(Mesh & mesh, Mesh & mesh_facets,
Array<Element> & new_elements);
#endif
/// update elemental connectivity after doubling a node
inline static void updateElementalConnectivity(
Mesh & mesh, UInt old_node, UInt new_node,
const std::vector<Element> & element_list,
const std::vector<Element> * facet_list = nullptr);
/// double middle nodes if facets are _segment_3
template <bool third_dim_segments>
static void updateQuadraticSegments(Mesh & mesh, Mesh & mesh_facets,
ElementType type_facet,
GhostType gt_facet,
Array<UInt> & doubled_nodes);
/// remove elements on a vector
inline static bool
removeElementsInVector(const std::vector<Element> & elem_to_remove,
std::vector<Element> & elem_list);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
};
} // namespace akantu
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "mesh_utils_inline_impl.hh"
#endif /* __AKANTU_MESH_UTILS_HH__ */

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