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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_LOCAL_AVERAGE_2D_HH
#define BLOCK_LOCAL_AVERAGE_2D_HH
#include "blockLocalAverage2D.h"
#include "indicator/blockIndicatorF2D.h"
namespace olb {
template<typename T, typename W>
BlockLocalAverage2D<T,W>::BlockLocalAverage2D(
BlockF2D<W>& f,
BlockIndicatorF2D<T>& indicatorF,
T radius)
: BlockF2D<W>(f.getBlockStructure(), f.getTargetDim()),
_f(f),
_indicatorF(indicatorF),
_radius(radius)
{
this->getName() = "BlockLocalAverage(" + _f.getName() + ")";
}
template<typename T, typename W>
bool BlockLocalAverage2D<T,W>::operator() (W output[], const int input[])
{
const auto& geometry = _indicatorF.getBlockGeometryStructure();
for (int i = 0; i < this->getTargetDim(); ++i) {
output[i] = 0.;
}
if (!_indicatorF(input)) {
return true;
}
T centerOfCircle[2];
geometry.getPhysR(centerOfCircle, input);
IndicatorCircle2D<T> analyticalCircle(centerOfCircle, _radius);
BlockIndicatorFfromIndicatorF2D<T> latticeCircle(
analyticalCircle,
_indicatorF.getBlockGeometryStructure());
std::size_t voxels(0);
int inputTmp[2];
for (inputTmp[0] = 0; inputTmp[0] < geometry.getNx(); ++inputTmp[0]) {
for (inputTmp[1] = 0; inputTmp[1] < geometry.getNy(); ++inputTmp[1]) {
if (latticeCircle(inputTmp) && _indicatorF(inputTmp)) {
T outputTmp[_f.getTargetDim()];
_f(outputTmp, inputTmp);
for (int i = 0; i < this->getTargetDim(); ++i) {
output[i] += outputTmp[i];
}
voxels += 1;
}
}
}
if (voxels > 0) {
for (int i = 0; i < this->getTargetDim(); ++i) {
output[i] /= voxels;
}
}
return true;
}
}
#endif
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