/data/refman/pasoursint/CMSSW_4_1_8_patch9/src/RecoTracker/NuclearSeedGenerator/interface/TangentHelix.h

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#ifndef _TangentHelix_H_
#define _TangentHelix_H_

#include "RecoTracker/NuclearSeedGenerator/interface/TangentCircle.h"

class TangentHelix {

   public :
       TangentHelix(){}

       TangentHelix(const GlobalVector& direction, const GlobalPoint& innerPoint, const GlobalPoint& outerPoint) : 
            theInnerPoint(innerPoint), theOuterPoint(outerPoint), theVertexPoint(innerPoint), theCircle(direction, innerPoint, outerPoint), 
            theDirectionAtVertex(direction) {}

       TangentHelix(const GlobalPoint& outerPoint, const GlobalPoint& innerPoint, const GlobalPoint& vertexPoint) : 
           theInnerPoint(innerPoint), theOuterPoint(outerPoint), theVertexPoint(vertexPoint), theCircle(outerPoint, innerPoint, vertexPoint) {
           theDirectionAtVertex = GlobalVector(1000,1000,1000);
       }

       TangentHelix(const TangentHelix& primCircle, const GlobalPoint& outerPoint, const GlobalPoint& innerPoint);

       GlobalPoint outerPoint() const { return theOuterPoint; }

       GlobalPoint innerPoint() const { return theInnerPoint; }

       GlobalPoint vertexPoint() const { return theVertexPoint; }

       TangentCircle circle() const { return theCircle; }

       GlobalVector directionAtVertex() ;

       int charge(float magz) { return theCircle.charge(magz); }

       double rho() const { return theCircle.rho(); }

       double curvatureError() { return theCircle.curvatureError(); }

        double vertexError() { return theCircle.vertexError(); }

   private :
       GlobalPoint theInnerPoint;
       GlobalPoint theOuterPoint;
       GlobalPoint theVertexPoint;

       TangentCircle theCircle;

       GlobalVector theDirectionAtVertex;
};

#endif