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/* This file is part of the OpenLB library
*
* Copyright (C) 2018 Adrian Kummerlaender
* E-mail contact: info@openlb.net
* The most recent release of OpenLB can be downloaded at
* <http://www.openlb.net/>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef BLOCK_REDUCTION_2D1D_H
#define BLOCK_REDUCTION_2D1D_H
#include "core/blockData2D.h"
#include "core/vector.h"
#include "blockBaseF2D.h"
#include "superBaseF2D.h"
#include "utilities/hyperplane2D.h"
#include "utilities/hyperplaneLattice2D.h"
#include "utilities/functorPtr.h"
#include "utilities/blockDataSyncMode.h"
#include "utilities/blockDataReductionMode.h"
#include <tuple>
namespace olb {
/// BlockReduction2D1D reduces the data of a SuperF2D functor to the
/// intersection between a given 2D hyperplane and the super geometry.
/**
* This intersection is interpolated at a set of discrete points according to
* the given resolution and exposed as a 1-dimensional BlockDataF2D functor.
*
* The hyperplane is parametrized by a origin and a single directionb vector u.
* Definition of hyperplanes using e.g. origin and normal vectors is supported
* via the Hyperplane2D interface.
**/
template <typename T>
class BlockReduction2D1D final : public HyperplaneLattice2D<T>, public BlockDataF2D<T,T> {
private:
/// Data fields to hold the reduced data
std::unique_ptr<BlockData2D<T,T>> _blockDataMemory;
/// Functor to be reduced
FunctorPtr<SuperF2D<T>> _f;
/// Plane points scheduled for storage in _blockData
/// i.e. Plane points whose physical location intersects the mother cuboid
/// and is nearest to a rank-local cuboid
std::vector<std::tuple<int,int>> _rankLocalSubplane;
/// Synchronization mode, see BlockDataSyncMode enum for further information.
/// This value only matters when PARALLEL_MODE_MPI is defined.
const BlockDataSyncMode _syncMode;
/// Reduction mode, see BlockDataReductionMode enum for further information.
const BlockDataReductionMode _reductionMode;
void updateBlockAnalytical(BlockData2D<T,T>& block);
void updateBlockDiscrete(BlockData2D<T,T>& block);
public:
/// Construction using functor and hyperplane lattice
/**
* \param f Functor to be reduced as a (non-)owning pointer or reference to SuperF2D<T>.
* \param lattice Hyperplane lattice parametrization
* \param syncMode
* Defines MPI synchronization strategy of the interpolated block data.
* \param reductionMode
* Defines whether data is interpolated or read from discrete lattice locations.
* Note: BlockDataReductionMode::Analytical imposes restrictions on hyperplane
* definition and discretization.
**/
BlockReduction2D1D(FunctorPtr<SuperF2D<T>>&& f,
const HyperplaneLattice2D<T>& lattice,
BlockDataSyncMode syncMode=BlockDataSyncMode::ReduceAndBcast,
BlockDataReductionMode reductionMode=BlockDataReductionMode::Analytical);
/// Construction using functor and hyperplane
/**
* \param f Functor to be reduced as a (non-)owning pointer or reference to SuperF2D<T>.
* \param hyperplane Hyperplane parametrization
* \param syncMode
* Defines MPI synchronization strategy of the interpolated block data.
* \param reductionMode
* Defines whether data is interpolated or read from discrete lattice locations.
**/
BlockReduction2D1D(FunctorPtr<SuperF2D<T>>&& f,
const Hyperplane2D<T>& hyperplane,
BlockDataSyncMode syncMode=BlockDataSyncMode::ReduceAndBcast,
BlockDataReductionMode reductionMode=BlockDataReductionMode::Analytical);
/// Construction using functor, hyperplane and resolution
/**
* \param f Functor to be reduced as a (non-)owning pointer or reference to SuperF2D<T>.
* \param hyperplane Hyperplane parametrization
* \param resolution Defines the number of voxel of the longest side.
* If it equals zero, _h is set to the cuboid geometry's minDeltaR.
* \param mode Defines MPI synchronization strategy of the interpolated block data.
**/
BlockReduction2D1D(FunctorPtr<SuperF2D<T>>&& f,
const Hyperplane2D<T>& hyperplane,
int resolution=600,
BlockDataSyncMode mode=BlockDataSyncMode::ReduceAndBcast);
/// Construction using functor, origin, direction and resolution
/**
* \param f Functor to be reduced as a (non-)owning pointer or reference to SuperF2D<T>.
* \param direction Direction vector
* \param origin Origin vector
* \param resolution Defines the number of voxel of the longest side.
* If it equals zero, _h is set to the cuboid geometry's minDeltaR.
* \param mode Defines MPI synchronization strategy of the interpolated block data.
**/
BlockReduction2D1D(FunctorPtr<SuperF2D<T>>&& f,
const Vector<T,2>& origin, const Vector<T,2>& direction,
int resolution=600,
BlockDataSyncMode mode=BlockDataSyncMode::ReduceAndBcast);
/// Custom operator for easier access to 1-dimensional block data
bool operator() (T output[], int i);
/// Initialize rank-local list of plane points to be stored in _blockData
void initialize();
/// Updates and writes the data to _blockData using _rankLocalSubplane
void update();
/// Overload of virtual function from class BlockF2D
BlockStructure2D& getBlockStructure() override;
/// \return reference to the rank local list of discrete line points, cuboid ids
const std::vector<std::tuple<int,int>>& getRankLocalSubplane() const;
};
} // end namespace olb
#endif
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