box type is now a template

Src/GroupTree/Core/FBuildGroupTree.hpp

@@ -43,9 +43,9 @@ namespace groupTree {
   // @param[inout]    localGroupTree  the LET of the octree
   // @param[out]    m_idx_distribution  Distribution of the leaves on the processors
   // @param[out]   nb_blocks
-  template <class LOADER, class particleType , class OCTREEGRPOUPCLASS>
+  template <class LOADER, class particleType , class OCTREEGRPOUPCLASS, class  FBox>
   void buildLetTree( inria::mpi::communicator & mpi_comm, LOADER& loader, std::vector<particleType> &myParticles,
-                     const  FBox<FPoint<FReal>> box,
+                     const  FBox /*<FPoint<FReal>> */box,
                      const int TreeHeight, const int groupSize,
                      OCTREEGRPOUPCLASS * &localGroupTree,
                      std::vector<MortonIndex> &m_idx_distribution, int & nb_blocks