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

external/cosmotool/src/dinterpolate.hpp

@@ -0,0 +1,94 @@
+#ifndef __COSMO_DINTERPOLATE_HPP
+#define __COSMO_DINTERPOLATE_HPP
+
+#include "config.hpp"
+#include "mykdtree.hpp"
+#include "kdtree_splitters.hpp"
+#include <gsl/gsl_eigen.h>
+
+namespace CosmoTool {
+ 
+  template<typename PType, typename IType, int N>
+  class DelaunayInterpolate {
+  public:
+    struct SimplexAccess {
+      int32_t *simplex_list;      
+    };
+ 
+    typedef KDTree<N, SimplexAccess, PType, KD_homogeneous_cell_splitter<N, SimplexAccess> > QuickTree;
+    typedef typename QuickTree::Cell QuickCell;
+    typedef PType CoordType[N];
+    
+    QuickTree *quickAccess;
+    QuickCell *cells;
+    PType *all_preweight;
+    int32_t *point_to_simplex_list_base;    
+    IType *values;
+    CoordType *positions;    
+    uint32_t numPoints;
+    uint32_t numSimplex;
+    uint32_t *simplex_list;
+    gsl_eigen_symmv_workspace *eigen_work;
+    bool *disable_simplex;
+    
+    /**
+     * This construct the interpolator. The construction is time consuming so
+     * please do it the less possible number of times, especially if you have
+     * a large number of points.
+     *
+     * @param positions list of the positions
+     * @param values list of the values taken at each position
+     * @param simplex_list list of points for each simplex. The packing
+     * is the following:
+     * [t(0,1),t(0,2),...,t(0,n+1),t(1,0),t(1,1),...,t(1,n+1),..],
+     * with t(i,j) the i-th simplex and j-th point of the simplex. The indexes
+     * refer to the previous list of points.
+     * @param numPoints the number of points
+     */
+    DelaunayInterpolate(CoordType *positions, IType *values, uint32_t *simplex_list,
+			uint32_t numPoints, uint32_t numSimplex)
+	throw (InvalidArgumentException)
+    {
+      this->positions = positions;
+      this->values = values;
+      this->simplex_list = simplex_list;
+      this->numPoints = numPoints;
+      this->numSimplex = numSimplex;
+      this->disable_simplex = new bool[numSimplex];
+      
+      buildPreweight();
+      buildQuickAccess();
+
+      eigen_work = gsl_eigen_symmv_alloc(N);
+
+    }
+    
+    ~DelaunayInterpolate()
+    {
+      delete[] cells;
+      delete quickAccess;
+      delete[] point_to_simplex_list_base;      
+      delete[] all_preweight;
+      delete[] disable_simplex;
+
+      gsl_eigen_symmv_free(eigen_work);
+    }
+
+    void buildPreweight()
+	throw (InvalidArgumentException);
+    void buildQuickAccess();
+    void buildHyperplane(const PType *v, CoordType& hyper);
+
+    bool checkPointInSimplex(const CoordType& pos, uint32_t simplex);
+    
+    uint32_t findSimplex(const CoordType& pos)
+      throw (InvalidArgumentException);
+
+    IType computeValue(const CoordType& pos)
+      throw (InvalidArgumentException);
+  };
+};
+
+#include "dinterpolate.tcc"
+
+#endif