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#ifndef TSCPBuilderNoMaterial_H
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#define TSCPBuilderNoMaterial_H
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#include "TrackingTools/PatternTools/interface/TrajectoryStateClosestToPointBuilder.h"
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#include "DataFormats/GeometryVector/interface/GlobalTag.h"
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#include "DataFormats/GeometryVector/interface/Point3DBase.h"
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#include "DataFormats/GeometryVector/interface/Vector3DBase.h"
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/**
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* This class builds a TrajectoryStateClosestToPoint given an original
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* TrajectoryStateOnSurface or FreeTrajectoryState. This new state is then
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* defined at the point of closest approach to the reference point.
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* In case the propagation was not successful, this state can be invalid.
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*/
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class TSCPBuilderNoMaterial :
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public TrajectoryStateClosestToPointBuilder
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{
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public:
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virtual ~TSCPBuilderNoMaterial(){}
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virtual TrajectoryStateClosestToPoint operator()
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(const FTS& originalFTS, const GlobalPoint& referencePoint) const;
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virtual TrajectoryStateClosestToPoint operator()
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(const TSOS& originalTSOS, const GlobalPoint& referencePoint) const;
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private:
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typedef Point3DBase< double, GlobalTag> GlobalPointDouble;
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typedef Vector3DBase< double, GlobalTag> GlobalVectorDouble;
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typedef std::pair<bool, FreeTrajectoryState> PairBoolFTS;
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PairBoolFTS createFTSatTransverseImpactPoint(const FTS& originalFTS,
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const GlobalPoint& referencePoint) const;
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PairBoolFTS createFTSatTransverseImpactPointCharged(const FTS& originalFTS,
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const GlobalPoint& referencePoint) const;
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PairBoolFTS createFTSatTransverseImpactPointNeutral(const FTS& originalFTS,
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const GlobalPoint& referencePoint) const;
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};
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#endif
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