/data/refman/pasoursint/CMSSW_4_1_8_patch9/src/TrackingTools/PatternTools/interface/TrajectoryStateClosestToPointBuilder.h

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#ifndef TrajectoryStateClosestToPointBuilder_H
#define TrajectoryStateClosestToPointBuilder_H

#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateClosestToPoint.h"

class TrajectoryStateClosestToPointBuilder
{
public: 
  typedef TrajectoryStateOnSurface      TSOS;
  typedef FreeTrajectoryState           FTS;

  virtual ~TrajectoryStateClosestToPointBuilder(){}

  virtual TrajectoryStateClosestToPoint operator() (const FTS& originalFTS, 
    const GlobalPoint& referencePoint) const = 0;

  virtual TrajectoryStateClosestToPoint operator() (const TSOS& originalTSOS, 
    const GlobalPoint& referencePoint) const = 0;

  bool positionEqual(const GlobalPoint& ptB, const GlobalPoint& ptA) const 
  {
    if ((ptA.x() == ptB.x()) && (ptA.y() == ptB.y()) && (ptA.z() == ptB.z()))
      return true;
    else return false;
  }

protected:

  TrajectoryStateClosestToPoint constructTSCP(const FTS& originalFTS, 
    const GlobalPoint& referencePoint) const
    {return TrajectoryStateClosestToPoint(originalFTS, referencePoint);}


};
#endif