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TouchableToDetectorElement.h

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#ifndef TOUCHABLETODETECTORELEMENT_H
#define TOUCHABLETODETECTORELEMENT_H


#include "G4DataHelpers/ITouchableToDetectorElement.h"
#include "GaudiAlg/GaudiTool.h"

#include "DetDesc/ILVolume.h"

class TouchableToDetectorElement : public GaudiTool, virtual ITouchableToDetectorElement
{
  public:
  TouchableToDetectorElement(const std::string& type,
                             const std::string& name,
                            const IInterface* parent);
  virtual ~TouchableToDetectorElement() {};

  virtual StatusCode GetBestDetectorElement(
                          const G4TouchableHistory* inHistory,  // The current particle location
                          const std::vector<std::string>& inPath,// Name(s) of specific detElements, or paths to be searched
                          const IDetectorElement* &outElement,  // output: The best element (may be zero!) 
                          int& outCompatibility );              // output: the goodness of the match (lower is better, -ve is no match)

  virtual StatusCode G4VolumeToDetDesc( const G4VPhysicalVolume* inVol,     
                                        const IPVolume* &outVol             
                                       );


  virtual StatusCode ClearCache() { return StatusCode::SUCCESS; }; // no caches here.

  // And now the machinery:
   struct SpecifiedVolume {
     const IDetectorElement*  mTop;
     ILVolume::ReplicaPath mRpath;
   };
  virtual StatusCode G4VolumeToDetDesc( const G4VPhysicalVolume* inVol,     
                                        const IPVolume* &outVol,            
                                        ILVolume::ReplicaPath& outPath 
                                       );

  StatusCode GetSpecifiedVolume(const G4TouchableHistory* inHistory, SpecifiedVolume& outVol);
  StatusCode GetSpecifiedVolume(const IDetectorElement* inElem,   const IDetectorElement* inTopElem, SpecifiedVolume& outVol);


  int        Compatability(const SpecifiedVolume& inPlace, const SpecifiedVolume& inContainer);
  
  template < class T  >
  StatusCode FindObjectsInDirectory(const std::string& dirname, std::vector<const T*>& outList);
  
};


#endif /* TOUCHABLETODETECTORELEMENT_H */

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