Conv4HitsReco2.h

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//
//  Simple photon conversion seeding class (inc)
//
//  Author: E Song
//
//  Version: 1;     6 Aug 2012
//

#ifndef Conv4HitsReco2_h
#define Conv4HitsReco2_h

#include <iostream>
#include <iomanip>
#include <math.h>
#include "DataFormats/Math/interface/Vector3D.h"
#include "DataFormats/Math/interface/Point3D.h"

class Conv4HitsReco2 {

    public:
    Conv4HitsReco2(math::XYZVector &, math::XYZVector &, math::XYZVector &, math::XYZVector &, math::XYZVector &);
    Conv4HitsReco2();
    ~Conv4HitsReco2();

    // Main publics
    int ConversionCandidate(math::XYZVector&, double&, double&);
    void Reconstruct(); // Not directly called when in use
    void Dump();
    void Refresh(math::XYZVector &vPhotVertex, math::XYZVector &h1, math::XYZVector &h2, math::XYZVector &h3, math::XYZVector &h4);

    math::XYZVector GetPlusCenter(double &);
    math::XYZVector GetMinusCenter(double &);

    // Optional publics
    void SetMaxNumberOfIterations(int val) { fMaxNumberOfIterations=val; };
    void SetRadiusECut(double val) { fRadiusECut=val; };
    void SetPhiECut(double val) { fPhiECut=val; };
    void SetRECut(double val) { fRECut=val; };
    void SetFixedNumberOfIterations(double val) { fFixedNumberOfIterations=val; };
    void SetBField(double val) { fBField=val; };

    double GetRecPhi() { return fRecPhi; };
    double GetRecR() { return fRecR; }; 
    double GetRecR1() { return fRecR1; };
    double GetRecR2() { return fRecR2; };
    int GetLoop() { return fLoop; };

    bool RegisterUnsolvable(int &num) { if (fSolved==1) return true; else {num+=1; return false;}};
    bool RegisterUnsolvable() { if (fSolved==1) return true; else return false; };
    bool RegisterBadSign(int &num) { if (fSignSatisfied==1) return true; else {num+=1; return false;}};
    bool RegisterBadSign() { if (fSignSatisfied==1) return true; else return false; };
    bool RegisterBadConverge(int &num) { if (fCutSatisfied==1) return true; else {num+=1; return false;}};
    bool RegisterBadConverge() { if (fCutSatisfied==1) return true; else return false;};

    private:
    void LocalTransformation(math::XYZVector v11, math::XYZVector v12, math::XYZVector v21, math::XYZVector v22,
                 math::XYZVector &V11, math::XYZVector &V12, math::XYZVector &V21, math::XYZVector &V22,
                 double Phi);
    math::XYZVector fHitv11, fHitv12, fHitv21, fHitv22;
    math::XYZVector fPV;
    math::XYZVector fRecV, fRecC1, fRecC2;
    
    double fRecPhi;
    double fRecR;
    double fRecR1;
    double fRecR2;  // original input coordinates in cm,

    int fCutSatisfied;  // Target cut met within iters?
    int fSignSatisfied; // All values positive?
    int fSolved;        // No break due to /0 or no real root?

    int fMaxNumberOfIterations;
    int fLoop;  // The number of loops actually performed
    int fFixedNumberOfIterations;   // Default 0: use cuts.  If > 0, employ fixed loop.
    double fRadiusECut;
    double fPhiECut;
    double fRECut;  // Note that these cuts are NOT independent.

    double fRadiusE;
    double fPhiE;
    double fRE;
    double fBField; // tesla
};

#endif