From 3bc4210c9a3c10ffe61f0237bba101f9700b7668 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Thu, 31 Jan 2019 15:14:03 +0100
Subject: Report total number of active cells in refinement hierarchy

---
 apps/adrian/cylinder2d/cylinder2d.cpp     |  5 +++--
 apps/adrian/poiseuille2d/poiseuille2d.cpp |  1 +
 src/refinement/grid2D.h                   |  2 ++
 src/refinement/grid2D.hh                  | 10 ++++++++++
 4 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/apps/adrian/cylinder2d/cylinder2d.cpp b/apps/adrian/cylinder2d/cylinder2d.cpp
index 56866c4..a0732e4 100644
--- a/apps/adrian/cylinder2d/cylinder2d.cpp
+++ b/apps/adrian/cylinder2d/cylinder2d.cpp
@@ -251,7 +251,7 @@ int main(int argc, char* argv[])
     coarseGrid.getSuperGeometry().rename(4,0,refined);
   }
 
-  const Vector<T,2> fineExtend2 {4*cylinderD, 2*cylinderD};
+  const Vector<T,2> fineExtend2 {3.6*cylinderD, 2*cylinderD};
   const Vector<T,2> fineOrigin2 {1*cylinderD, 2*cylinderD-fineExtend2[1]/2};
 
   auto& fineGrid2 = fineGrid.refine(fineOrigin2, fineExtend2);
@@ -264,12 +264,13 @@ int main(int argc, char* argv[])
   prepareLattice(fineOutflowGrid);
   prepareLattice(fineGrid2);
 
+  clout << "Total number of active cells: " << coarseGrid.getActiveVoxelN() << endl;
   clout << "Starting simulation..." << endl;
   Timer<T> timer(
     coarseGrid.getConverter().getLatticeTime(maxPhysT),
     coarseGrid.getSuperGeometry().getStatistics().getNvoxel());
   timer.start();
-  const int statIter = coarseGrid.getConverter().getLatticeTime(0.5);
+  const int statIter = coarseGrid.getConverter().getLatticeTime(1);
 
   for (int iT = 0; iT < coarseGrid.getConverter().getLatticeTime(maxPhysT); ++iT) {
     setBoundaryValues(coarseGrid, iT);
diff --git a/apps/adrian/poiseuille2d/poiseuille2d.cpp b/apps/adrian/poiseuille2d/poiseuille2d.cpp
index 4091905..5a47f96 100644
--- a/apps/adrian/poiseuille2d/poiseuille2d.cpp
+++ b/apps/adrian/poiseuille2d/poiseuille2d.cpp
@@ -248,6 +248,7 @@ int main(int argc, char* argv[])
 
   prepareLattice(fineGrid);
 
+  clout << "Total number of active cells: " << coarseGrid.getActiveVoxelN() << endl;
   clout << "starting simulation..." << endl;
   Timer<T> timer(
     coarseGrid.getConverter().getLatticeTime(maxPhysT),
diff --git a/src/refinement/grid2D.h b/src/refinement/grid2D.h
index 37e764a..95324f7 100644
--- a/src/refinement/grid2D.h
+++ b/src/refinement/grid2D.h
@@ -110,6 +110,8 @@ public:
 
   RefiningGrid2D<T,DESCRIPTOR>& refine(Vector<T,2> origin, Vector<T,2> extend, bool addCouplers=true);
 
+  std::size_t getActiveVoxelN() const;
+
 };
 
 template <typename T, template<typename> class DESCRIPTOR>
diff --git a/src/refinement/grid2D.hh b/src/refinement/grid2D.hh
index 941bff7..504808a 100644
--- a/src/refinement/grid2D.hh
+++ b/src/refinement/grid2D.hh
@@ -217,6 +217,16 @@ Vector<T,2> Grid2D<T,DESCRIPTOR>::alignExtendToGrid(Vector<T,2> extend) const
   return util::floor(extend / deltaX) * deltaX;
 }
 
+template <typename T, template<typename> class DESCRIPTOR>
+std::size_t Grid2D<T,DESCRIPTOR>::getActiveVoxelN() const
+{
+  std::size_t n = _geometry->getStatistics().getNvoxel();
+  for (const auto& grid : _fineGrids) {
+    n += grid->getActiveVoxelN();
+  }
+  return n;
+}
+
 template <typename T, template<typename> class DESCRIPTOR>
 RefiningGrid2D<T,DESCRIPTOR>& Grid2D<T,DESCRIPTOR>::refine(
   Vector<T,2> wantedOrigin, Vector<T,2> wantedExtend, bool addCouplers)
-- 
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