Imported Healpix, cfitsio, cosmotool. Added cmake tool to build dependencies (cfitsio, hdf5, netcdf, boost, healpix, gsl, ..). Adjusted CMakeLists.txt

external/cosmotool/src/sparseGrid.hpp

@@ -0,0 +1,87 @@
+#ifndef __VOID_SPARSE_GRID_HPP
+#define __VOID_SPARSE_GRID_HPP
+
+#include <cmath>
+#include "config.hpp"
+#include <list>
+
+namespace CosmoTool 
+{
+  
+  template <typename T>
+  struct bracketAccessor
+  {
+    typedef typename T::value_type result_type;
+
+    result_type
+    operator()(T const& V, size_t const N) const throw ()
+    {
+      return V[N];
+    }
+  };
+
+  template<typename T>
+  struct GridElement
+  {
+    std::list<T> eList;
+  };
+
+  template<typename T, typename CType = double>
+  struct GridDesc
+  {
+    GridElement<T> *grid;
+    uint32_t gridRes;
+    CType boxSize;
+  };
+
+  template<typename T, int N, typename CType = double>
+  class SparseIterator
+  {
+  protected:
+    typedef CType coord[N];
+
+    int32_t index_min[N], index_max[N], index_cur[N];
+    GridElement<T> *eCur;
+    GridDesc<T> desc;
+    typename std::list<T>::iterator eIterator;
+
+    GridElement<T> *getElement();
+  public:
+    SparseIterator(GridDesc<T>& d, coord& c, CType R);
+    SparseIterator();
+    ~SparseIterator();
+    
+    SparseIterator& operator++();
+
+    bool last();
+
+    T& operator*() { return *eIterator; }
+    T *operator->() { return eIterator.operator->(); }
+  };
+
+  template<typename T, int N, typename CType = double,
+	   typename CAccessor = bracketAccessor<T> >
+  class SparseGrid
+  {
+  public:
+    typedef CType coord[N];
+    typedef SparseIterator<T, N, CType> iterator;
+    CAccessor acc;
+
+    SparseGrid(CType L, uint32_t gridRes);
+    ~SparseGrid();
+    
+    void addElementInGrid(T& e);
+
+    iterator locateElements(coord& c, CType R);
+    void clear();
+
+  protected:
+    GridDesc<T> grid;
+  };
+
+};
+
+#include "sparseGrid.tcc"
+
+#endif