From 94d3e79a8617f88dc0219cfdeedfa3147833719d Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 24 Jun 2019 14:43:36 +0200
Subject: Initialize at openlb-1-3

---
 src/functors/lattice/blockLocalAverage2D.hh | 94 +++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 src/functors/lattice/blockLocalAverage2D.hh

(limited to 'src/functors/lattice/blockLocalAverage2D.hh')

diff --git a/src/functors/lattice/blockLocalAverage2D.hh b/src/functors/lattice/blockLocalAverage2D.hh
new file mode 100644
index 0000000..2892572
--- /dev/null
+++ b/src/functors/lattice/blockLocalAverage2D.hh
@@ -0,0 +1,94 @@
+/*  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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