/data/refman/pasoursint/CMSSW_4_4_5_patch3/src/TrackingTools/GeomPropagators/interface/PropagationDirectionFromPath.h

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#ifndef _CR_PropagationDirectionFromPath
#define _CR_PropagationDirectionFromPath

#include "DataFormats/TrajectorySeed/interface/PropagationDirection.h"
class PropagationDirectionFromPath {
public:
  inline PropagationDirection operator()(const double& s) const
  {
    return s>=0 ? alongMomentum : oppositeToMomentum;
  }
  inline PropagationDirection 
  operator()(const double& s,
             const PropagationDirection propDir) const
  {
    if ( propDir!=anyDirection )  return propDir;
    return (*this)(s);
  }
};
#endif