/data/refman/pasoursint/CMSSW_4_1_8_patch9/src/TrackingTools/GsfTools/src/MultiStatePropagation.h

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#ifndef MultiStatePropagation_h_
#define MultiStatePropagation_h_

#include "TrackingTools/GeomPropagators/interface/Propagator.h"
#include "TrackingTools/GsfTools/interface/MultiTrajectoryStateAssembler.h"
#include "TrackingTools/GeomPropagators/interface/PropagationDirectionFromPath.h"

template <class T>
class MultiStatePropagation {  
  
public:
  MultiStatePropagation(const Propagator& aPropagator) :
    thePropagator(aPropagator) {}

  ~MultiStatePropagation() {};

  std::pair<TrajectoryStateOnSurface,double> 
  propagateWithPath (const TrajectoryStateOnSurface& tsos, 
                     const T& surface) const;

private:
  TrajectoryStateOnSurface setWeight (const TrajectoryStateOnSurface,
                                      const double) const;

private:
  // Single state propagator
  const Propagator& thePropagator;

  typedef std::pair<TrajectoryStateOnSurface,double> TsosWP;
  typedef std::vector<TrajectoryStateOnSurface> MultiTSOS;
};

#include "TrackingTools/GsfTools/src/MultiStatePropagation.icc"
#endif