cohesive_element_inserter.cc
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cohesive_element_inserter.cc
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	/**
	* @file cohesive_element_inserter.cc
	*
	* @author Mathias Lebihain <mathias.lebihain@enpc.fr>
	* @author Nicolas Richart <nicolas.richart@epfl.ch>
	* @author Marco Vocialta <marco.vocialta@epfl.ch>
	*
	* @date creation: Wed Dec 04 2013
	* @date last modification: Wed Nov 11 2020
	*
	* @brief Cohesive element inserter functions
	*
	*
	* @section LICENSE
	*
	* Copyright (©) 2014-2021 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 "cohesive_element_inserter.hh"
	#include "cohesive_element_inserter_helper.hh"
	#include "communicator.hh"
	#include "element_group.hh"
	#include "element_synchronizer.hh"
	#include "global_ids_updater.hh"
	#include "mesh_accessor.hh"
	#include "mesh_iterators.hh"
	/* -------------------------------------------------------------------------- */
	#include <algorithm>
	#include <limits>
	/* -------------------------------------------------------------------------- */

	namespace akantu {

	CohesiveElementInserter::CohesiveElementInserter(Mesh & mesh, const ID & id)
	: Parsable(ParserType::_cohesive_inserter), id(id), mesh(mesh),
	mesh_facets(mesh.initMeshFacets()),
	insertion_facets("insertion_facets", id),
	insertion_limits(mesh.getSpatialDimension(), 2),
	check_facets("check_facets", id) {

	this->registerParam("cohesive_surfaces", physical_surfaces, _pat_parsable,
	"List of groups to consider for insertion");
	this->registerParam("cohesive_zones", physical_zones, _pat_parsable,
	"List of groups to consider for insertion");
	this->registerParam("bounding_box", insertion_limits, _pat_parsable,
	"Global limit for insertion");

	auto spatial_dimension = mesh.getSpatialDimension();

	/// init insertion limits
	for (Int dim = 0; dim < spatial_dimension; ++dim) {
	insertion_limits(dim, 0) = std::numeric_limits<Real>::max() * Real(-1.);
	insertion_limits(dim, 1) = std::numeric_limits<Real>::max();
	}

	insertion_facets.initialize(mesh_facets,
	_spatial_dimension = spatial_dimension - 1,
	_with_nb_element = true, _default_value = false);
	}

	/* -------------------------------------------------------------------------- */
	CohesiveElementInserter::~CohesiveElementInserter() = default;

	/* -------------------------------------------------------------------------- */
	void CohesiveElementInserter::parseSection(const ParserSection & section) {
	Parsable::parseSection(section);

	if (is_extrinsic) {
	limitCheckFacets(this->check_facets);
	}
	}

	/* -------------------------------------------------------------------------- */
	void CohesiveElementInserter::limitCheckFacets() {
	limitCheckFacets(this->check_facets);
	}

	/* -------------------------------------------------------------------------- */
	void CohesiveElementInserter::setLimit(SpatialDirection axis, Real first_limit,
	Real second_limit) {
	AKANTU_DEBUG_ASSERT(
	axis < mesh.getSpatialDimension(),
	"You are trying to limit insertion in a direction that doesn't exist");

	insertion_limits(axis, 0) = std::min(first_limit, second_limit);
	insertion_limits(axis, 1) = std::max(first_limit, second_limit);
	}

	/* -------------------------------------------------------------------------- */
	Int CohesiveElementInserter::insertIntrinsicElements() {
	limitCheckFacets(insertion_facets);
	return insertElements();
	}

	/* -------------------------------------------------------------------------- */
	void CohesiveElementInserter::limitCheckFacets(
	ElementTypeMapArray<bool> & check_facets) {
	AKANTU_DEBUG_IN();

	auto spatial_dimension = mesh.getSpatialDimension();

	check_facets.initialize(mesh_facets,
	_spatial_dimension = spatial_dimension - 1,
	_with_nb_element = true, _default_value = true);
	check_facets.set(true);

	// remove the pure ghost elements
	for_each_element(
	mesh_facets,
	[&](auto && facet) {
	const auto & element_to_facet = mesh_facets.getElementToSubelement(
	facet.type, facet.ghost_type)(facet.element);
	auto & left = element_to_facet[0];
	auto & right = element_to_facet[1];
	if (right == ElementNull \|\|
	(left.ghost_type == _ghost && right.ghost_type == _ghost)) {
	check_facets(facet) = false;
	return;
	}
	#ifndef AKANTU_NDEBUG
	if (left == ElementNull) {
	AKANTU_DEBUG_WARNING("By convention element should not have "
	"ElementNull on there first side: "
	<< facet);
	}
	#endif

	if (left.kind() == _ek_cohesive or right.kind() == _ek_cohesive) {
	check_facets(facet) = false;
	}
	},
	_spatial_dimension = spatial_dimension - 1);

	auto tolerance = Math::getTolerance();
	Vector<Real> bary_facet(spatial_dimension);
	// set the limits to the bounding box
	for_each_element(
	mesh_facets,
	[&](auto && facet) {
	auto & need_check = check_facets(facet);
	if (not need_check) {
	return;
	}

	mesh_facets.getBarycenter(facet, bary_facet);
	Int coord_in_limit = 0;

	while (coord_in_limit < spatial_dimension and
	bary_facet(coord_in_limit) >
	(insertion_limits(coord_in_limit, 0) - tolerance) and
	bary_facet(coord_in_limit) <
	(insertion_limits(coord_in_limit, 1) + tolerance)) {
	++coord_in_limit;
	}

	if (coord_in_limit != spatial_dimension) {
	need_check = false;
	}
	},
	_spatial_dimension = spatial_dimension - 1);

	// remove the physical zones
	if (mesh.hasData("physical_names") and not physical_zones.empty()) {
	auto && physical_names = mesh.getData<std::string>("physical_names");
	for_each_element(
	mesh_facets,
	[&](auto && facet) {
	const auto & element_to_facet = mesh_facets.getElementToSubelement(
	facet.type, facet.ghost_type)(facet.element);
	auto count = 0;
	for (auto i : arange(2)) {
	const auto & element = element_to_facet[i];
	if (element == ElementNull) {
	continue;
	}
	const auto & name = physical_names(element);
	count += find(physical_zones.begin(), physical_zones.end(), name) !=
	physical_zones.end();
	}

	if (count != 2) {
	check_facets(facet) = false;
	}
	},
	_spatial_dimension = spatial_dimension - 1);
	}

	if (physical_surfaces.empty()) {
	AKANTU_DEBUG_OUT();
	return;
	}

	if (not mesh_facets.hasData("physical_names")) {
	AKANTU_DEBUG_ASSERT(
	physical_surfaces.empty(),
	"No physical names in the mesh but insertion limited to a group");
	AKANTU_DEBUG_OUT();
	return;
	}

	const auto & physical_ids =
	mesh_facets.getData<std::string>("physical_names");

	// set the limits to the physical surfaces
	for_each_element(
	mesh_facets,
	[&](auto && facet) {
	auto & need_check = check_facets(facet, 0);
	if (not need_check) {
	return;
	}

	const auto & physical_id = physical_ids(facet);
	auto it = find(physical_surfaces.begin(), physical_surfaces.end(),
	physical_id);

	need_check = (it != physical_surfaces.end());
	},
	_spatial_dimension = spatial_dimension - 1);

	AKANTU_DEBUG_OUT();
	}

	/* -------------------------------------------------------------------------- */
	UInt CohesiveElementInserter::insertElements(bool only_double_facets) {
	CohesiveNewNodesEvent node_event(AKANTU_CURRENT_FUNCTION);
	NewElementsEvent element_event(AKANTU_CURRENT_FUNCTION);

	if (mesh_facets.isDistributed()) {
	mesh_facets.getElementSynchronizer().synchronizeOnce(
	*this, SynchronizationTag::_ce_groups);
	}

	CohesiveElementInserterHelper cohesive_element_inserter_helper(
	mesh, insertion_facets);

	UInt nb_new_elements{0};
	if (only_double_facets) {
	nb_new_elements = cohesive_element_inserter_helper.insertFacetsOnly();
	} else {
	nb_new_elements = cohesive_element_inserter_helper.insertCohesiveElement();
	element_event.getList().copy(
	cohesive_element_inserter_helper.getNewElements());
	}

	auto && doubled_nodes = cohesive_element_inserter_helper.getDoubledNodes();
	auto nb_new_nodes = doubled_nodes.size();

	node_event.getList().reserve(nb_new_nodes);
	node_event.getOldNodesList().reserve(nb_new_nodes);

	for (auto && doubled_node : make_view(doubled_nodes, 2)) {
	node_event.getList().push_back(doubled_node(1));
	node_event.getOldNodesList().push_back(doubled_node(0));
	}

	if (nb_new_elements > 0) {
	updateInsertionFacets();
	}

	MeshAccessor mesh_accessor(mesh);
	std::tie(nb_new_nodes, nb_new_elements) =
	mesh_accessor.updateGlobalData(node_event, element_event);

	return nb_new_elements;
	}

	/* -------------------------------------------------------------------------- */
	void CohesiveElementInserter::updateInsertionFacets() {
	AKANTU_DEBUG_IN();

	auto spatial_dimension = mesh.getSpatialDimension();

	for (auto && facet_gt : ghost_types) {
	for (auto && facet_type :
	mesh_facets.elementTypes(spatial_dimension - 1, facet_gt)) {
	auto & ins_facets = insertion_facets(facet_type, facet_gt);

	// this is the intrinsic case
	if (not is_extrinsic) {
	continue;
	}

	auto & f_check = check_facets(facet_type, facet_gt);
	for (auto && pair : zip(ins_facets, f_check)) {
	bool & ins = std::get<0>(pair);
	bool & check = std::get<1>(pair);
	if (ins) {
	ins = check = false;
	}
	}
	}
	}

	// resize for the newly added facets
	insertion_facets.initialize(mesh_facets,
	_spatial_dimension = spatial_dimension - 1,
	_with_nb_element = true, _default_value = false);

	// resize for the newly added facets
	if (is_extrinsic) {
	check_facets.initialize(mesh_facets,
	_spatial_dimension = spatial_dimension - 1,
	_with_nb_element = true, _default_value = false);
	} else {
	insertion_facets.set(false);
	}

	AKANTU_DEBUG_OUT();
	}

	} // namespace akantu

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