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ITouchableToDetectorElement.h

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#ifndef ITOUCHABLETODETECTORELEMENT_H
#define ITOUCHABLETODETECTORELEMENT_H


#include "GaudiKernel/IAlgTool.h"
#include "GaudiKernel/StatusCode.h"
#include <string>
#include <vector>

class G4TouchableHistory;
class IDetectorElement; 
class G4VPhysicalVolume;
class IPVolume;

class ITouchableToDetectorElement : virtual public IAlgTool
{
public:
    static const InterfaceID& interfaceID();

    virtual StatusCode GetBestDetectorElement(
                            const G4TouchableHistory* inHistory,     // The current particle location
                            const std::vector<std::string>& inPaths, // Name(s) of specific detElements, or paths to be searched
                            const IDetectorElement* &outElement,     // output: The best element (may be zero!) 
                            int& outCompatibility ) =0;              // output: the goodness of the match (higher is better)
  
    virtual StatusCode G4VolumeToDetDesc( 
                           const G4VPhysicalVolume* inVol,     
                           const IPVolume* &outVol             
                           ) = 0;
 
    virtual StatusCode ClearCache() = 0; // To be called to invalidate any caches in case the geometry changes in some substantial way,
                       // i.e. the top volume fed to G4 changes.
 

protected:
    
    virtual ~ITouchableToDetectorElement();
};



#endif /* ITOUCHABLETODETECTORELEMENT_H */

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