PScatterCrossSection.h

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// Author: I. Froehlich
// Written: 14.8.2012
// Revised:
 
#ifndef _PSCATTERCROSSSECTION_H_
#define _PSCATTERCROSSSECTION_H_
 
 
#include "TF1.h"
#include "TF2.h"
#include "PAngularDistribution.h"
#include "PProjector.h"
#include "PF2.h"
 
 
class PScatterCrossSection : public PAngularDistribution  {
 
 public:
    PScatterCrossSection();
    PScatterCrossSection(const Char_t *id, const Char_t *de);
    PDistribution *Clone(const char *delme=NULL) const;
 
    Bool_t Init(void);
    Bool_t Prepare(void);
 
    Bool_t AddEquation(char *command);
    Bool_t AddHistogram(TH2 *histo, char *command);
    Bool_t AddHistogram(TH1 *histo, char *command);
 
    using TF1::SetRange;
    void SetRange(Double_t mymin, Double_t mymax) {
    TF1::SetRange(qmin, qmax);
    qmax = mymax;
    qmin = mymin;
    };
 
    void SetNpx(Int_t my_npx);
    void SetNpy(Int_t my_npy);
 
    PF2 *GetFunction(void) {return pf2;};
 
 protected:
 
    double SamplePolarAngle(double);
 
    Double_t qmin,qmax;
    Double_t costheta, q;
 
    PF2 *pf2;
 
    PParticle *vprimary;
    Double_t  *vf;
    Bool_t MakeVars(void);
 
    Int_t npx, npy;
 
    ClassDef(PScatterCrossSection, 0)  //Cross section model for the reaction a+b -> c+d
 
};
 
#endif