Couple of interface changes (#86)

Author: gartrog

k4Interface/include/k4Interface/ITopoClusterInputTool.h

@@ -4,6 +4,8 @@
 // Gaudi
 #include "GaudiKernel/IAlgTool.h"
 
+#include <unordered_map>
+
 namespace edm4hep {
 class CalorimeterHit;
 }
@@ -18,7 +20,7 @@ class ITopoClusterInputTool : virtual public IAlgTool {
 public:
   DeclareInterfaceID(ITopoClusterInputTool, 1, 0);
 
-  virtual StatusCode cellIDMap(std::map<uint64_t, double>& aCells) = 0;
+  virtual StatusCode cellIDMap(std::unordered_map<uint64_t, double>& aCells) = 0;
  };
 
 #endif /* RECINTERFACE_ITOPOCLUSTERINPUTTOOL_H */

k4Interface/include/k4Interface/ITowerTool.h

@@ -29,9 +29,10 @@ class ITowerTool : virtual public IAlgTool {
   virtual tower towersNumber() = 0;
   /**  Build calorimeter towers.
    *   @param[out] aTowers Calorimeter towers.
+   *   @param[in] fillTowersCells Whether to fill maps of cells into towers, for later use in attachCells
    *   @return Size of the cell collection.
    */
-  virtual uint buildTowers(std::vector<std::vector<float>>& aTowers) = 0;
+  virtual uint buildTowers(std::vector<std::vector<float>>& aTowers, bool fillTowersCells=true) = 0;
   /**  Get the radius for the position calculation.
    *   @return Radius
    */