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Diffstat (limited to 'src/utilities/hyperplaneLattice2D.hh')
-rw-r--r-- | src/utilities/hyperplaneLattice2D.hh | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/utilities/hyperplaneLattice2D.hh b/src/utilities/hyperplaneLattice2D.hh new file mode 100644 index 0000000..94d101d --- /dev/null +++ b/src/utilities/hyperplaneLattice2D.hh @@ -0,0 +1,199 @@ +/* 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 HYPERPLANE_LATTICE_2D_HH +#define HYPERPLANE_LATTICE_2D_HH + +#include "hyperplaneLattice2D.h" + +namespace olb { + +template <typename T> +int HyperplaneLattice2D<T>::computeMaxLatticeDistance() const +{ + const Cuboid2D<T>& cuboid = _geometry.getMotherCuboid(); + const Vector<T,2> origin = cuboid.getOrigin(); + const Vector<int,2> extend = cuboid.getExtend(); + const T deltaR = cuboid.getDeltaR(); + + T maxPhysDistance = T(); + T tmp; + Vector<T,2> tmpO; + Vector<T,2> tmpE; + + for(int iDim=0; iDim<2; ++iDim){ + tmpO[iDim] = origin[iDim] - _origin[iDim]; + tmpE[iDim] = origin[iDim] + extend[iDim]*deltaR - _origin[iDim]; + } + tmp = sqrt(tmpO[0]*tmpO[0] + tmpO[1]*tmpO[1]); + if (maxPhysDistance < tmp) { + maxPhysDistance = tmp; + } + tmp = sqrt((tmpE[0]*tmpE[0] + tmpO[1]*tmpO[1])); + if (maxPhysDistance < tmp) { + maxPhysDistance = tmp; + } + tmp = sqrt(tmpO[0]*tmpO[0] + tmpE[1]*tmpE[1]); + if (maxPhysDistance < tmp) { + maxPhysDistance = tmp; + } + tmp = sqrt(tmpE[0]*tmpE[0] + tmpE[1]*tmpE[1]); + if (maxPhysDistance < tmp) { + maxPhysDistance = tmp; + } + + return int(maxPhysDistance/_h) + 1; +} + +template <typename T> +void HyperplaneLattice2D<T>::constructCuboid(int maxLatticeDistance) +{ + int iC; + int min = -maxLatticeDistance; + int max = maxLatticeDistance; + + for ( int i = -maxLatticeDistance; i < maxLatticeDistance; ++i ) { + if ( _geometry.getC(getPhysR(i), iC) ) { + min = i; + break; + } + } + for ( int i = maxLatticeDistance; i > -maxLatticeDistance; --i ) { + if ( _geometry.getC(getPhysR(i), iC) ) { + max = i; + break; + } + } + + _n = max - min + 1; + _origin = _origin + double(min)*_u; +} + +template <typename T> +void HyperplaneLattice2D<T>::setToResolution(int resolution) +{ + T newH = _n*_h/(T) resolution; + _n = resolution; + _h = newH; + _u.normalize(_h); +} + +template<typename T> +HyperplaneLattice2D<T>::HyperplaneLattice2D( + CuboidGeometry2D<T>& geometry, Hyperplane2D<T> hyperplane) + : _geometry(geometry), + _hyperplane(hyperplane), + _origin(hyperplane.origin), + _u(hyperplane.u), + _h(geometry.getMinDeltaR()) +{ + _u.normalize(_h); + + const int maxLatticeDistance = computeMaxLatticeDistance(); + // compute _hyperplane.origin, _nx, _ny so that the cuboid is right inside the geometry + constructCuboid(maxLatticeDistance); +} + +template<typename T> +HyperplaneLattice2D<T>::HyperplaneLattice2D( + CuboidGeometry2D<T>& geometry, Hyperplane2D<T> hyperplane, int resolution) + : _geometry(geometry), + _hyperplane(hyperplane), + _origin(hyperplane.origin), + _u(hyperplane.u), + _h(geometry.getMinDeltaR()) +{ + _u.normalize(_h); + + const int maxLatticeDistance = computeMaxLatticeDistance(); + // compute _hyperplane.origin, _nx, _ny so that the cuboid is right inside the geometry + constructCuboid(maxLatticeDistance); + + if ( resolution > 0 ) { + setToResolution(resolution); + } +} + +template<typename T> +HyperplaneLattice2D<T>::HyperplaneLattice2D( + CuboidGeometry2D<T>& geometry, Hyperplane2D<T> hyperplane, T h) + : _geometry(geometry), + _hyperplane(hyperplane), + _origin(hyperplane.origin), + _u(hyperplane.u), + _h(h) +{ + if ( util::nearZero(_h) ) { + _h = _geometry.getMinDeltaR(); + } + + _u.normalize(_h); + + const int maxLatticeDistance = computeMaxLatticeDistance(); + // compute _hyperplane.origin, _nx, _ny so that the cuboid is right inside the geometry + constructCuboid(maxLatticeDistance); +} + +template <typename T> +const Hyperplane2D<T>& HyperplaneLattice2D<T>::getHyperplane() const +{ + return _hyperplane; +} + +template <typename T> +Vector<T,2> HyperplaneLattice2D<T>::getPhysR(const int& n) const +{ + return Vector<T,2> { + _origin[0] + double(n)*_u[0], + _origin[1] + double(n)*_u[1] + }; +} + +template <typename T> +int HyperplaneLattice2D<T>::getN() const +{ + return _n; +} + +template <typename T> +T HyperplaneLattice2D<T>::getPhysSpacing() const +{ + return _h; +} + +template <typename T> +Vector<T,2> HyperplaneLattice2D<T>::getPhysOrigin() const +{ + return _origin; +} + +template <typename T> +Vector<T,2> HyperplaneLattice2D<T>::getVectorU() const +{ + return _u; +} + + +} + +#endif |