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// Copyright (C) 2016 2021 EDF
// All Rights Reserved
// This code is published under the GNU Lesser General Public License (GNU LGPL)
#ifndef MESHCALCULATIONLOCALREGRESSION_H
#define MESHCALCULATIONLOCALREGRESSION_H
#include <array>
#include <vector>
#include <memory>
#include <Eigen/Dense>
/** \file meshCalculationLocalRegression.h
* \brief Permits to calculate the adapted mesh to particle distribution
* \author Xavier Warin
*/
namespace StOpt
{
/**
* \addtogroup LocalLinear
* @{
*/
/// \brief Calculate the local mesh
/// \param p_particles particles used for the meshes.
/// First dimension : dimension of the problem,
/// second dimension : the number of particles
/// \param p_nbMesh number of meshes in each direction
/// \param p_simToCell for each simulation, gives its global position in the Cartesian meshing
/// \param p_mesh describe the mesh generated (first dimension is the dimension of the problem, the second dimension is the number of mesh)
/// For each cell and dimension gives the coordinates min and max of the cell
/// \param p_mesh1D second representation of the discretization per dimension (conform mesh)
void meshCalculationLocalRegression(const Eigen::ArrayXXd &p_particles, const Eigen::ArrayXi &p_nbMesh,
Eigen::ArrayXi &p_simToCell, Eigen::Array< std::array< double, 2>, Eigen::Dynamic, Eigen::Dynamic > &p_mesh,
std::vector< std::shared_ptr<Eigen::ArrayXd > > &p_mesh1D);
/// \brief Calculate the local mesh : in this version last dimension has discrete values that are gathered
/// \param p_particles particles used for the meshes.
/// First dimension : dimension of the problem,
/// second dimension : the number of particles
/// \param p_nbMesh number of meshes in each direction
/// \param p_simToCell for each simulation, gives its global position in the Cartesian meshing
/// \param p_mesh describe the mesh generated (first dimension is the dimension of the problem, the second dimension is the number of mesh)
/// For each cell and dimension gives the coordinates min and max of the cell
/// \param p_mesh1D second representation of the discretization per dimension (conform mesh)
void meshCalculationLocalRegressionDiscrLastDim(const Eigen::ArrayXXd &p_particles, const Eigen::ArrayXi &p_nbMesh,
Eigen::ArrayXi &p_simToCell, Eigen::Array< std::array< double, 2>, Eigen::Dynamic, Eigen::Dynamic > &p_mesh,
std::vector< std::shared_ptr<Eigen::ArrayXd > > &p_mesh1D);
}
/**@}*/
#endif /*MESHCALCULATIONLOCALREGRESSION_H*/
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