blockStdDeviationF3D.hh

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/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2019 Jakob Mangold, Mathias J. Krause
 *  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_STDDEVIATION_F3D_HH
#define BLOCK_STDDEVIATION_F3D_HH
 
#include "blockStdDeviationF3D.h"
 
namespace olb {
 
 
template <typename T, typename W>
BlockStdDeviationF3D<T,W>::BlockStdDeviationF3D(BlockF3D<W>&          f,
    BlockIndicatorF3D<T>& indicatorF,
    Cuboid3D<T>&      cuboid,
    T expectedValue)
  : BlockAverage3D<T,W>(f, indicatorF),
    _f(f),
    _indicatorF(indicatorF),
    _cuboid(cuboid),
    _expectedValue(expectedValue)
{
  this->getName() = "BlockStdDeviation("+_f.getName()+")";
}
 
template <typename T, typename W>
bool BlockStdDeviationF3D<T,W>::operator() (W output[], const int input[])
{
  OLB_ASSERT(_f.getSourceDim() == _indicatorF.getSourceDim(),
             "functor source dimension equals indicator source dimension");
 
  std::size_t voxels(0);
 
  W outputTmp[_f.getTargetDim()];
 
  int inputTmp[_f.getSourceDim()];
 
  for (int i = 0; i < this->getTargetDim(); ++i) {
    output[i] = W(0);
  }
 
 
  for (inputTmp[0] = 0; inputTmp[0] < _cuboid.getNx(); ++inputTmp[0]) {
    for (inputTmp[1] = 0; inputTmp[1] < _cuboid.getNy(); ++inputTmp[1]) {
      for (inputTmp[2] = 0; inputTmp[2] < _cuboid.getNz(); ++inputTmp[2]) {
        if (_indicatorF(inputTmp)) {
          _f(outputTmp,inputTmp);
          for (int i = 0; i < _f.getTargetDim(); ++i) {
            output[i] += util::pow((outputTmp[i] - _expectedValue), 2);
          }
          voxels += 1;
        }
      }
    }
  }
 
//  std::cout << output[0] << "   " << voxels << "   " << _expectedValue << "\n";
 
  output[_f.getTargetDim()] += voxels;
 
  return true;
}
 
}
 
#endif