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#ifndef DataFormats_TrackerRecHit2D_TrackingRecHitLessFromGlobalPosition_H
#define DataFormats_TrackerRecHit2D_TrackingRecHitLessFromGlobalPosition_H
#include "DataFormats/TrajectorySeed/interface/PropagationDirection.h"
#include "Geometry/CommonDetUnit/interface/GeomDet.h"
#include <functional>
#include "Geometry/CommonDetUnit/interface/TrackingGeometry.h"
#include "DataFormats/TrackingRecHit/interface/TrackingRecHit.h"
/** Defines order of layers in the Tracker as seen by straight tracks
* coming from the interaction region.
*/
class TrackingRecHitLessFromGlobalPosition {
public:
TrackingRecHitLessFromGlobalPosition(const TrackingGeometry* geometry_, PropagationDirection dir = alongMomentum)
: geometry(geometry_), theDir(dir) {}
bool operator()(const TrackingRecHit& a, const TrackingRecHit& b) const {
if (theDir == alongMomentum)
return insideOutLess(a, b);
else
return insideOutLess(b, a);
}
private:
bool insideOutLess(const TrackingRecHit& a, const TrackingRecHit& b) const;
bool barrelForwardLess(const TrackingRecHit& a, const TrackingRecHit& b) const;
const TrackingGeometry* geometry;
PropagationDirection theDir;
};
#endif
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