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/geometry/blockGeometryStatistics2D.hh | 517 ++++++++++++++++++++++++++++++
 1 file changed, 517 insertions(+)
 create mode 100644 src/geometry/blockGeometryStatistics2D.hh

(limited to 'src/geometry/blockGeometryStatistics2D.hh')

diff --git a/src/geometry/blockGeometryStatistics2D.hh b/src/geometry/blockGeometryStatistics2D.hh
new file mode 100644
index 0000000..ffd56e7
--- /dev/null
+++ b/src/geometry/blockGeometryStatistics2D.hh
@@ -0,0 +1,517 @@
+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2011, 2014 Mathias J. Krause, Simon Zimny
+ *  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.
+ */
+
+/** \file
+ * Representation of a statistic for a 2D geometry -- generic implementation.
+ */
+
+#ifndef BLOCK_GEOMETRY_STATISTICS_2D_HH
+#define BLOCK_GEOMETRY_STATISTICS_2D_HH
+
+#include <iostream>
+#include <math.h>
+#include <fstream>
+#include <sstream>
+#include <cmath>
+
+#include "geometry/blockGeometry2D.h"
+#include "geometry/blockGeometryStatistics2D.h"
+
+namespace olb {
+
+template<typename T>
+BlockGeometryStatistics2D<T>::BlockGeometryStatistics2D( BlockGeometryStructure2D<T>* blockGeometry)
+  : _blockGeometry(blockGeometry), clout(std::cout,"BlockGeometryStatistics2D")
+{
+  _statisticsUpdateNeeded=true;
+}
+
+
+template<typename T>
+bool& BlockGeometryStatistics2D<T>::getStatisticsStatus()
+{
+  return _statisticsUpdateNeeded;
+}
+
+template<typename T>
+bool const & BlockGeometryStatistics2D<T>::getStatisticsStatus() const
+{
+  return _statisticsUpdateNeeded;
+}
+
+
+template<typename T>
+void BlockGeometryStatistics2D<T>::update(bool verbose)
+{
+
+  if (getStatisticsStatus() ) {
+    _material2n.clear();
+
+    _nX = _blockGeometry->getNx();
+    _nY = _blockGeometry->getNy();
+    _h = _blockGeometry->getDeltaR();
+
+    for (int iX = 0; iX < _nX; ++iX) {
+      for (int iY = 0; iY < _nY; ++iY) {
+        takeStatistics(iX, iY);
+      }
+    }
+
+    _nMaterials=int();
+    std::map<int, int>::iterator iter;
+    for (iter = _material2n.begin(); iter != _material2n.end(); iter++) {
+      _nMaterials++;
+    }
+
+    if (verbose) {
+      clout << "updated" << std::endl;
+    }
+    getStatisticsStatus()=false;
+  }
+}
+
+
+template<typename T>
+int BlockGeometryStatistics2D<T>::getNmaterials()
+{
+  update();
+  return _nMaterials;
+}
+
+template<typename T>
+int BlockGeometryStatistics2D<T>::getNvoxel(int material)
+{
+  update();
+  return _material2n[material];
+}
+
+template<typename T>
+std::map<int, int> BlockGeometryStatistics2D<T>::getMaterial2n()
+{
+  update();
+  return _material2n;
+}
+
+template<typename T>
+int BlockGeometryStatistics2D<T>::getNvoxel()
+{
+  update();
+  int total = 0;
+  std::map<int, int>::iterator iter;
+  for (iter = _material2n.begin(); iter != _material2n.end(); iter++) {
+    if (iter->first!=0) {
+      total+=iter->second;
+    }
+  }
+  return total;
+}
+
+template<typename T>
+std::vector<int> BlockGeometryStatistics2D<T>::getMinLatticeR(int material)
+{
+  update();
+  return _material2min[material];
+}
+
+template<typename T>
+std::vector<int> BlockGeometryStatistics2D<T>::getMaxLatticeR(int material)
+{
+  update();
+  return _material2max[material];
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::getMinPhysR(int material)
+{
+  std::vector<T> tmp(2,T());
+  _blockGeometry->getPhysR(&(tmp[0]), &(getMinLatticeR(material)[0]));
+  return tmp;
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::getMaxPhysR(int material)
+{
+  std::vector<T> tmp(2,T());
+  _blockGeometry->getPhysR(&(tmp[0]), &(getMaxLatticeR(material)[0]));
+  return tmp;
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::getLatticeExtend(int material)
+{
+  update();
+  std::vector<T> extend;
+  for (int iDim = 0; iDim < 2; iDim++) {
+    extend.push_back(_material2max[material][iDim] - _material2min[material][iDim]);
+  }
+  return extend;
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::getPhysExtend(int material)
+{
+  update();
+  std::vector<T> extend;
+  for (int iDim = 0; iDim < 2; iDim++) {
+    extend.push_back(getMaxPhysR(material)[iDim] - getMinPhysR(material)[iDim]);
+  }
+  return extend;
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::getPhysRadius(int material)
+{
+  update();
+  std::vector<T> radius;
+  for (int iDim=0; iDim<2; iDim++) {
+    radius.push_back((getMaxPhysR(material)[iDim] - getMinPhysR(material)[iDim])/2.);
+  }
+  return radius;
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::getCenterPhysR(int material)
+{
+  update();
+  std::vector<T> center;
+  for (int iDim=0; iDim<2; iDim++) {
+    center.push_back(getMinPhysR(material)[iDim] + getPhysRadius(material)[iDim]);
+  }
+  return center;
+}
+
+template<typename T>
+std::vector<int> BlockGeometryStatistics2D<T>::getType(int iX, int iY)
+{
+
+  std::vector<int> discreteNormal(3, 0);
+
+  if (_blockGeometry->getMaterial(iX, iY) != 1
+      && _blockGeometry->getMaterial(iX, iY) != 0) {
+
+    ///boundary0N and boundary 0P
+    if (_blockGeometry->getMaterial(iX, iY + 1) != 1
+        && _blockGeometry->getMaterial(iX, iY + 1) != 0
+        && _blockGeometry->getMaterial(iX, iY - 1) != 1
+        && _blockGeometry->getMaterial(iX, iY - 1) != 0) {
+
+      if (_blockGeometry->getMaterial(iX + 1, iY) == 1) {
+        discreteNormal[0] = 0;
+        discreteNormal[1] = -1;
+        discreteNormal[2] = 0;
+      }
+
+      if (_blockGeometry->getMaterial(iX - 1, iY) == 1) {
+        discreteNormal[0] = 0;
+        discreteNormal[1] = 1;
+        discreteNormal[2] = 0;
+      }
+    }
+
+    /// boundary1N and boundary1P
+    if (_blockGeometry->getMaterial(iX + 1, iY) != 1
+        && _blockGeometry->getMaterial(iX + 1, iY) != 0
+        && _blockGeometry->getMaterial(iX - 1, iY) != 1
+        && _blockGeometry->getMaterial(iX - 1, iY) != 0) {
+
+      if (_blockGeometry->getMaterial(iX, iY + 1) == 1) {
+        discreteNormal[0] = 0;
+        discreteNormal[1] = 0;
+        discreteNormal[2] = -1;
+      }
+
+      if (_blockGeometry->getMaterial(iX, iY - 1) == 1) {
+        discreteNormal[0] = 0;
+        discreteNormal[1] = 0;
+        discreteNormal[2] = 1;
+      }
+    }
+
+    /// externalCornerNN and externalCornerNP
+    if (_blockGeometry->getMaterial(iX + 1, iY) != 1
+        && _blockGeometry->getMaterial(iX + 1, iY) != 0) {
+
+      if (_blockGeometry->getMaterial(iX, iY + 1) != 1
+          && _blockGeometry->getMaterial(iX, iY + 1) != 0
+          && _blockGeometry->getMaterial(iX + 1, iY + 1) == 1) {
+        discreteNormal[0] = 1;
+        discreteNormal[1] = -1;
+        discreteNormal[2] = -1;
+      }
+
+      if (_blockGeometry->getMaterial(iX, iY - 1) != 1
+          && _blockGeometry->getMaterial(iX, iY - 1) != 0
+          && _blockGeometry->getMaterial(iX + 1, iY - 1) == 1) {
+        discreteNormal[0] = 1;
+        discreteNormal[1] = -1;
+        discreteNormal[2] = 1;
+      }
+    }
+
+    /// externalCornerPN and externalCornerPP
+    if (_blockGeometry->getMaterial(iX - 1, iY) != 1
+        && _blockGeometry->getMaterial(iX - 1, iY) != 0) {
+
+      if (_blockGeometry->getMaterial(iX, iY + 1) != 1
+          && _blockGeometry->getMaterial(iX, iY + 1) != 0
+          && _blockGeometry->getMaterial(iX - 1, iY + 1) == 1) {
+        discreteNormal[0] = 1;
+        discreteNormal[1] = 1;
+        discreteNormal[2] = -1;
+      }
+
+      if (_blockGeometry->getMaterial(iX, iY - 1) != 1
+          && _blockGeometry->getMaterial(iX, iY - 1) != 0
+          && _blockGeometry->getMaterial(iX - 1, iY - 1) == 1) {
+        discreteNormal[0] = 1;
+        discreteNormal[1] = 1;
+        discreteNormal[2] = 1;
+      }
+    }
+
+    /// internalCornerNN and internalCornerNP
+    if (_blockGeometry->getMaterial(iX - 1, iY) != 1
+        && _blockGeometry->getMaterial(iX - 1, iY) != 0) {
+
+      if (_blockGeometry->getMaterial(iX, iY - 1) != 1
+          && _blockGeometry->getMaterial(iX, iY - 1) != 0
+          && _blockGeometry->getMaterial(iX - 1, iY - 1) == 0) {
+        discreteNormal[0] = 2;
+        discreteNormal[1] = -1;
+        discreteNormal[2] = -1;
+      }
+
+      if (_blockGeometry->getMaterial(iX, iY + 1) != 1
+          && _blockGeometry->getMaterial(iX, iY + 1) != 0
+          && _blockGeometry->getMaterial(iX - 1, iY + 1) == 0) {
+        discreteNormal[0] = 2;
+        discreteNormal[1] = -1;
+        discreteNormal[2] = 1;
+      }
+    }
+
+    /// internalCornerPN and internalCornerPP
+    if (_blockGeometry->getMaterial(iX + 1, iY) != 1
+        && _blockGeometry->getMaterial(iX + 1, iY) != 0) {
+
+      if (_blockGeometry->getMaterial(iX, iY - 1) != 1
+          && _blockGeometry->getMaterial(iX, iY - 1) != 0
+          && _blockGeometry->getMaterial(iX + 1, iY - 1) == 0) {
+        discreteNormal[0] = 2;
+        discreteNormal[1] = 1;
+        discreteNormal[2] = -1;
+      }
+
+      if (_blockGeometry->getMaterial(iX, iY + 1) != 1
+          && _blockGeometry->getMaterial(iX, iY + 1) != 0
+          && _blockGeometry->getMaterial(iX + 1, iY + 1) == 0) {
+        discreteNormal[0] = 2;
+        discreteNormal[1] = 1;
+        discreteNormal[2] = 1;
+      }
+    }
+  }
+  return discreteNormal;
+}
+
+template<typename T>
+std::vector<int> BlockGeometryStatistics2D<T>::computeNormal(int iX, int iY)
+{
+  update();
+  std::vector<int> normal (2,int(0));
+
+  if (iX != 0) {
+    if (_blockGeometry->getMaterial(iX - 1, iY) == 1) {
+      normal[0] = -1;
+    }
+  }
+  if (iX != _nX - 1) {
+    if (_blockGeometry->getMaterial(iX + 1, iY) == 1) {
+      normal[0] = 1;
+    }
+  }
+  if (iY != 0) {
+    if (_blockGeometry->getMaterial(iX, iY - 1) == 1) {
+      normal[1] = -1;
+    }
+  }
+  if (iY != _nY - 1) {
+    if (_blockGeometry->getMaterial(iX, iY + 1) == 1) {
+      normal[1] = 1;
+    }
+  }
+  return normal;
+}
+
+template<typename T>
+std::vector<T> BlockGeometryStatistics2D<T>::computeNormal(int material)
+{
+
+  update();
+  std::vector<T> normal (2,int(0));
+  std::vector<int> minC = getMinLatticeR(material);
+  std::vector<int> maxC = getMaxLatticeR(material);
+  for (int iX = minC[0]; iX<=maxC[0]; iX++) {
+    for (int iY = minC[1]; iY<=maxC[1]; iY++) {
+      if (_blockGeometry->getMaterial(iX,iY) == material) {
+        normal[0]+=computeNormal(iX,iY)[0];
+        normal[1]+=computeNormal(iX,iY)[1];
+      }
+    }
+  }
+  T norm = sqrt(normal[0]*normal[0]+normal[1]*normal[1]);
+  if (norm>0.) {
+    normal[0]/=norm;
+    normal[1]/=norm;
+  }
+  return normal;
+}
+
+template<typename T>
+std::vector<int> BlockGeometryStatistics2D<T>::computeDiscreteNormal(int material, T maxNorm)
+{
+
+  update();
+  std::vector<T> normal = computeNormal(material);
+  std::vector<int> discreteNormal(2,int(0));
+
+  T smallestAngle = T(0);
+  for (int iX = -1; iX<=1; iX++) {
+    for (int iY = -1; iY<=1; iY++) {
+      T norm = sqrt(iX*iX+iY*iY);
+      if (norm>0.&& norm<maxNorm) {
+        T angle = (iX*normal[0] + iY*normal[1])/norm;
+        if (angle>=smallestAngle) {
+          smallestAngle=angle;
+          discreteNormal[0] = iX;
+          discreteNormal[1] = iY;
+        }
+      }
+    }
+  }
+  return discreteNormal;
+}
+
+
+template<typename T>
+bool BlockGeometryStatistics2D<T>::check(int material, int iX, int iY,
+    unsigned offsetX, unsigned offsetY)
+{
+  update();
+  bool found = true;
+  for (int iOffsetX = -offsetX; iOffsetX <= (int) offsetX; ++iOffsetX) {
+    for (int iOffsetY = -offsetY; iOffsetY <= (int) offsetY; ++iOffsetY) {
+      if (_blockGeometry->getMaterial(iX + iOffsetX, iY + iOffsetY) != material) {
+        found = false;
+      }
+    }
+  }
+  return found;
+}
+
+template<typename T>
+bool BlockGeometryStatistics2D<T>::find(int material, unsigned offsetX,
+                                        unsigned offsetY, int& foundX, int& foundY)
+{
+  update();
+  bool found = false;
+  for (foundX = 0; foundX < _nX; foundX++) {
+    for (foundY = 0; foundY < _nY; foundY++) {
+      found = check(material, foundX, foundY, offsetX, offsetY);
+      if (found) {
+        return found;
+      }
+    }
+  }
+  return found;
+}
+
+
+template<typename T>
+void BlockGeometryStatistics2D<T>::print()
+{
+
+  update();
+  std::map<int, int>::iterator iter;
+  for (iter = _material2n.begin(); iter != _material2n.end(); iter++) {
+    clout << "materialNumber=" << iter->first
+          << "; count=" << iter->second
+          << "; minLatticeR=(" << _material2min[iter->first][0] <<","<< _material2min[iter->first][1] <<")"
+          << "; maxLatticeR=(" << _material2max[iter->first][0] <<","<< _material2max[iter->first][1] <<")"
+          << std::endl;
+  }
+}
+
+
+template<typename T>
+void BlockGeometryStatistics2D<T>::takeStatistics(int iX, int iY)
+{
+
+  int type = _blockGeometry->getMaterial(iX, iY);
+  if (_material2n.count(type) == 0) {
+    _material2n[type] = 1;
+    std::vector<int> minCo;
+    std::vector<int> maxCo;
+    minCo.push_back(iX);
+    minCo.push_back(iY);
+    _material2min[type] = minCo;
+    maxCo.push_back(iX);
+    maxCo.push_back(iY);
+    _material2max[type] = maxCo;
+
+  } else {
+    _material2n[type]++;
+    if (iX < _material2min[type][0]) {
+      _material2min[type][0] = iX;
+    }
+    if (iY < _material2min[type][1]) {
+      _material2min[type][1] = iY;
+    }
+    if (iX > _material2max[type][0]) {
+      _material2max[type][0] = iX;
+    }
+    if (iY > _material2max[type][1]) {
+      _material2max[type][1] = iY;
+    }
+  }
+}
+
+// This function compares two discrete normals (discreteNormal, discreteNormal2) in case of a duplicate assignment of boundary types.
+// The goal of this function is to combine these special boundaryVoxels to an existing one (in this case boundary or externalEdge) according to
+// the x-, y- and z-values of their discrete normals.
+// In the following the algorithm is declared only for the x value, but it is also valid for the y and z values.
+//
+// for x1 = x2, the new value of x is x1 (1)
+// for x1*x2 = -1, the new value of x is 0 (2)
+// for x1*x2 = 0, the new value is 0   (3)
+//
+// It may be possible that all three values equal 0. To avoid that the values are tested again (x²+y²+z²==0) and the loosest assumption (3) is
+// redefined to.
+//
+// If x,y and z == 0 --> find those x,y or z which are 0 because of (3) and redefine them to the value !=0
+//
+// Additionally the calculated entries are multiplied with (-1) to get the right existing boundary.
+
+} // namespace olb
+
+#endif
-- 
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