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neighborhood_max_criterion.cc
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			/**
			* @file neighborhood_max_criterion.cc
			*
			* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
			*
			* @date creation: Thu Oct 15 2015
			* @date last modification: Tue Nov 24 2015
			*
			* @brief Implementation of class NeighborhoodMaxCriterion
			*
			* @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/>.
			*
			*/

			/* -------------------------------------------------------------------------- */
			#include "neighborhood_max_criterion.hh"

			__BEGIN_AKANTU__

			/* -------------------------------------------------------------------------- */
			NeighborhoodMaxCriterion::NeighborhoodMaxCriterion(const SolidMechanicsModel & model,
			const ElementTypeMapReal & quad_coordinates,
			const ID & criterion_id,
			const ID & id,
			const MemoryID & memory_id) :
			NeighborhoodBase(model, quad_coordinates, id, memory_id),
			Parsable(_st_non_local, id),
			is_highest("is_highest", id, memory_id),
			criterion(criterion_id, id, memory_id)
			{

			AKANTU_DEBUG_IN();

			this->registerParam("radius" , neighborhood_radius , 100.,
			_pat_parsable \| _pat_readable , "Non local radius");

			Mesh & mesh = this->model.getMesh();
			/// allocate the element type map arrays for _not_ghosts: One entry per quad
			GhostType ghost_type = _not_ghost;
			Mesh::type_iterator it = mesh.firstType(spatial_dimension, ghost_type);
			Mesh::type_iterator last_type = mesh.lastType (spatial_dimension, ghost_type);

			for(; it != last_type; ++it) {
			UInt new_size = this->quad_coordinates(*it, ghost_type).getSize();
			this->is_highest.alloc(new_size, 1, *it, ghost_type, true);
			this->criterion.alloc(new_size, 1, *it, ghost_type, true);
			}

			/// criterion needs allocation also for ghost
			ghost_type = _ghost;
			it = mesh.firstType(spatial_dimension, ghost_type);
			last_type = mesh.lastType(spatial_dimension, ghost_type);
			for(; it != last_type; ++it) {
			UInt new_size = this->quad_coordinates(*it, ghost_type).getSize();
			this->criterion.alloc(new_size, 1, *it, ghost_type, true);
			}

			AKANTU_DEBUG_OUT();

			}

			/* -------------------------------------------------------------------------- */
			NeighborhoodMaxCriterion::~NeighborhoodMaxCriterion() {
			AKANTU_DEBUG_IN();


			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void NeighborhoodMaxCriterion::initNeighborhood() {
			AKANTU_DEBUG_IN();

			/// parse the input parameter
			const Parser & parser = getStaticParser();
			const ParserSection & section_neighborhood = *(parser.getSubSections(_st_neighborhood).first);
			this->parseSection(section_neighborhood);

			AKANTU_DEBUG_INFO("Creating the grid");
			this->createGrid();

			/// insert the non-ghost quads into the grid
			this->insertAllQuads(_not_ghost);

			/// store the number of current ghost elements for each type in the mesh
			ElementTypeMap<UInt> nb_ghost_protected;
			Mesh & mesh = this->model.getMesh();
			Mesh::type_iterator it = mesh.firstType(spatial_dimension, _ghost);
			Mesh::type_iterator last_type = mesh.lastType(spatial_dimension, _ghost);
			for(; it != last_type; ++it)
			nb_ghost_protected(mesh.getNbElement(it, _ghost), it, _ghost);

			/// create the grid synchronizer
			this->createGridSynchronizer();

			/// insert the ghost quads into the grid
			this->insertAllQuads(_ghost);

			/// create the pair lists
			this->updatePairList();

			/// remove the unneccessary ghosts
			this->cleanupExtraGhostElements(nb_ghost_protected);

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void NeighborhoodMaxCriterion::createGridSynchronizer() {
			this->is_creating_grid = true;
			std::set<SynchronizationTag> tags;
			tags.insert(_gst_nh_criterion);

			std::stringstream sstr; sstr << getID() << ":grid_synchronizer";
			this->grid_synchronizer = GridSynchronizer::createGridSynchronizer(this->model.getMesh(),
			*spatial_grid,
			sstr.str(),
			synch_registry,
			tags, 0, false);
			this->is_creating_grid = false;
			}

			/* -------------------------------------------------------------------------- */
			void NeighborhoodMaxCriterion::insertAllQuads(const GhostType & ghost_type) {
			IntegrationPoint q;
			q.ghost_type = ghost_type;
			Mesh & mesh = this->model.getMesh();

			Mesh::type_iterator it = mesh.firstType(spatial_dimension, ghost_type);
			Mesh::type_iterator last_type = mesh.lastType (spatial_dimension, ghost_type);
			for(; it != last_type; ++it) {
			UInt nb_element = mesh.getNbElement(*it, ghost_type);
			UInt nb_quad = this->model.getFEEngine().getNbIntegrationPoints(*it, ghost_type);

			const Array<Real> & quads = this->quad_coordinates(*it, ghost_type);
			q.type = *it;

			Array<Real>::const_vector_iterator quad = quads.begin(spatial_dimension);

			for (UInt e = 0; e < nb_element; ++e) {
			q.element = e;
			for (UInt nq = 0; nq < nb_quad; ++nq) {
			q.num_point = nq;
			q.global_num = q.element * nb_quad + nq;
			spatial_grid->insert(q, *quad);
			++quad;
			}
			}
			}
			}

			/* -------------------------------------------------------------------------- */
			void NeighborhoodMaxCriterion::findMaxQuads(std::vector<IntegrationPoint> & max_quads) {
			AKANTU_DEBUG_IN();

			/// clear the element type maps
			this->is_highest.clear();
			this->criterion.clear();
			/// update the values of the criterion
			const ID field_name = criterion.getName();
			for (UInt m = 0; m < this->model.getNbMaterials(); ++m) {
			const Material & material = this->model.getMaterial(m);
			if (material.isInternal<Real>(field_name, _ek_regular))
			for(UInt g = _not_ghost; g <= _ghost; ++g) {
			GhostType ghost_type = (GhostType) g;
			material.flattenInternal(field_name, criterion, ghost_type, _ek_regular);
			}
			}

			/// start the exchange the value of the criterion on the ghost elements
			SynchronizerRegistry & synch_registry = this->model.getSynchronizerRegistry();
			synch_registry.asynchronousSynchronize(_gst_nh_criterion);

			/// compare to not-ghost neighbors
			checkNeighbors(_not_ghost);

			/// finish the exchange
			synch_registry.waitEndSynchronize(_gst_nh_criterion);

			/// compare to ghost neighbors
			checkNeighbors(_ghost);


			/// extract the quads with highest criterion in their neighborhood
			IntegrationPoint quad;
			quad.ghost_type = _not_ghost;
			Mesh & mesh = this->model.getMesh();
			Mesh::type_iterator it = mesh.firstType(spatial_dimension, _not_ghost);
			Mesh::type_iterator last_type = mesh.lastType(spatial_dimension, _not_ghost);
			for(; it != last_type; ++it) {
			quad.type = *it;
			Array<bool>::const_scalar_iterator is_highest_it = is_highest(*it, _not_ghost).begin();
			Array<bool>::const_scalar_iterator is_highest_end = is_highest(*it, _not_ghost).end();

			UInt nb_quadrature_points = this->model.getFEEngine().getNbIntegrationPoints(*it, _not_ghost);
			UInt q = 0;

			/// loop over is_highest for the current element type
			for (;is_highest_it != is_highest_end; ++is_highest_it, ++q) {
			if (*is_highest_it) {
			/// gauss point has the highest stress in his neighbourhood
			quad.element = q / nb_quadrature_points;
			quad.global_num = q;
			quad.num_point = q % nb_quadrature_points;
			max_quads.push_back(quad);
			}
			}
			}

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void NeighborhoodMaxCriterion::checkNeighbors(const GhostType & ghost_type2) {
			AKANTU_DEBUG_IN();

			PairList::const_iterator first_pair = pair_list[ghost_type2].begin();
			PairList::const_iterator last_pair = pair_list[ghost_type2].end();

			// Compute the weights
			for(;first_pair != last_pair; ++first_pair) {
			const IntegrationPoint & lq1 = first_pair->first;
			const IntegrationPoint & lq2 = first_pair->second;

			Array<bool> & has_highest_eq_stress_1 = is_highest(lq1.type, lq1.ghost_type);

			const Array<Real> & criterion_1 = this->criterion(lq1.type, lq1.ghost_type);
			const Array<Real> & criterion_2 = this->criterion(lq2.type, lq2.ghost_type);

			if(criterion_1(lq1.global_num) < criterion_2(lq2.global_num))
			has_highest_eq_stress_1(lq1.global_num) = false;
			else if (ghost_type2 != _ghost) {
			Array<bool> & has_highest_eq_stress_2 = is_highest(lq2.type, lq2.ghost_type);
			has_highest_eq_stress_2(lq2.global_num) = false;
			}
			}
			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void NeighborhoodMaxCriterion::cleanupExtraGhostElements(const ElementTypeMap<UInt> & nb_ghost_protected) {

			Mesh & mesh = this->model.getMesh();
			/// create remove elements event
			RemovedElementsEvent remove_elem(mesh);
			/// create set of ghosts to keep
			std::set<Element> relevant_ghost_elements;
			PairList::const_iterator first_pair = pair_list[_ghost].begin();
			PairList::const_iterator last_pair = pair_list[_ghost].end();
			for(;first_pair != last_pair; ++first_pair) {
			const IntegrationPoint & q2 = first_pair->second;
			relevant_ghost_elements.insert(q2);
			}

			Array<Element> ghosts_to_erase(0);
			Mesh::type_iterator it = mesh.firstType(spatial_dimension, _ghost);
			Mesh::type_iterator last_type = mesh.lastType(spatial_dimension, _ghost);

			Element element;
			element.ghost_type = _ghost;

			std::set<Element>::const_iterator end = relevant_ghost_elements.end();
			for(; it != last_type; ++it) {
			element.type = *it;
			UInt nb_ghost_elem = mesh.getNbElement(*it, _ghost);
			UInt nb_ghost_elem_protected = 0;
			try {
			nb_ghost_elem_protected = nb_ghost_protected(*it, _ghost);
			} catch (...) {}

			if(!remove_elem.getNewNumbering().exists(*it, _ghost))
			remove_elem.getNewNumbering().alloc(nb_ghost_elem, 1, *it, _ghost);
			else remove_elem.getNewNumbering(*it, _ghost).resize(nb_ghost_elem);
			Array<UInt> & new_numbering = remove_elem.getNewNumbering(*it, _ghost);
			for (UInt g = 0; g < nb_ghost_elem; ++g) {
			element.element = g;
			if (element.element >= nb_ghost_elem_protected && relevant_ghost_elements.find(element) == end) {
			ghosts_to_erase.push_back(element);
			new_numbering(element.element) = UInt(-1);
			}
			}
			/// renumber remaining ghosts
			UInt ng = 0;
			for (UInt g = 0; g < nb_ghost_elem; ++g) {
			if (new_numbering(g) != UInt(-1)) {
			new_numbering(g) = ng;
			++ng;
			}
			}
			}

			mesh.sendEvent(remove_elem);
			this->onElementsRemoved(ghosts_to_erase, remove_elem.getNewNumbering(), remove_elem);

			}


			__END_AKANTU__

rAKA/src/model/common/neighborhoods_criterion_evaluation/neighborhood_max_criterion.cc6aa0b05eb32efeatures/cohesive_clust…

neighborhood_max_criterion.ccView Options

rAKA/src/model/common/neighborhoods_criterion_evaluation/neighborhood_max_criterion.cc
6aa0b05eb32efeatures/cohesive_clust…

neighborhood_max_criterion.cc
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