////////////////////////////////////////////////////////////////////////
/// \class RAT::GeoCerenkovSourceFactory
///
/// \brief   Geometry for the Cerenkov source
///
/// \author Olivia Wasalski <owasalski@lbl.gov>
/// \author Benjamin Land <benland100@gmail.com> -- contact person
///
/// REVISION HISTORY:\n
/// 	29/04/2011 : O. Wasalski - First version. \n
/// 	11/05/2011 : O. Wasalski - Second Version. \n
///     22/08/2012 : O. Wasalski - Changed parameter to move source. \n
///
/// \details 	Constructs a possible geometry for a Cerenkov source.
///		The geometry resembles that of the Li8 source used for SNO,
///		with the change from a stainless steel sphere to one made
///		from acrylic. To load this geometry into the simulation, use:
///
///		/rat/db/load geo/CerenkovSource.geo
///
///		All of the layers and components scale according to the values
///		found in data/geo/CerenkovSource.geo. Any of these values can
///		be changed in the RAT macro using:
///
///		/rat/db/set GEO[CerenkovSource] acrylic_ball_thickness 60.0
///		/rat/db/set GEO[CerenkovSource] window_material "acrylic_sno"
///		ect...
///
///		You can shift the position of the source by using the following
///		commands in your RAT macro:
///
///		/rat/db/set GEO[CerenkovSource] position [x, y, z]
///
///		Where x, y and z are the distances from the AV center in mm.
///
////////////////////////////////////////////////////////////////////////

#ifndef __RAT_GeoCerenkovSourceFactory__
#define __RAT_GeoCerenkovSourceFactory__

#include <RAT/GeoFactory.hh>
#include <G4VPhysicalVolume.hh>
#include <G4VisAttributes.hh>
#include <vector>

namespace RAT {

  class GeoCerenkovSourceFactory : public GeoFactory {

  public:

    // Constructor - index of factory is "CerenkovSource"
    GeoCerenkovSourceFactory() : GeoFactory("CerenkovSource") {};

    // Return the cerenkov source physical volume
    /// @param[in] checkOverlaps when placing
    virtual void Construct(DBLinkPtr table,
                           const bool checkOverlaps);

  protected:
    G4VisAttributes* getColour(std::vector<float> colour);
    void checkFieldDoesNotExist(DBLinkPtr table, std::string field);
  };

} // namespace RAT

#endif  // __RAT_GeoCerenkovSourceFactory__