AliTPCPRF2D.h

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#ifndef ALITPCPRF2D_H
#define ALITPCPRF2D_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */


#include "TObject.h"

class TF2;
class TArrayF;
class TH1F;
class AliH2F;
class TPaveText;

class AliTPCPRF2D : public TObject {
public :
  AliTPCPRF2D();
  virtual ~AliTPCPRF2D();
  virtual void Update();  //recalculate tables for charge calculation
  Float_t GetGRF(Float_t xin, Float_t yin);
  //return generic response function  in xin
  virtual TF2 * GetGRF(){return fGRF;}
  virtual Float_t GetPRF(Float_t xin, Float_t yin);
  //return PRF in point xin,yin

  virtual void DrawX(Float_t x1 ,Float_t x2,Float_t y1,Float_t y2=0, Int_t N=1);
  virtual void DrawPRF(Float_t x1, Float_t x2, Float_t y1, Float_t y2, Int_t Nx=20, Int_t Ny=20);
  //draw two dimensional PRF

  virtual void DrawDist(Float_t x1, Float_t x2, Float_t y1, Float_t y2, Int_t Nx=20, Int_t Ny=20,
    Float_t  thr=0);
  //draw distortion of COG method
  //we suppose threshold equal to thr
  TH1F *  GenerDrawXHisto(Float_t x1, Float_t x2,Float_t y);
  AliH2F * GenerDrawHisto(Float_t x1, Float_t x2, Float_t y1, Float_t y2, Int_t Nx=20, Int_t Ny=20);
  AliH2F * GenerDrawDistHisto(Float_t x1, Float_t x2, Float_t y1, Float_t y2, Int_t Nx=20, Int_t Ny=20,
    Float_t  thr=0);

  virtual void SetPad(Float_t width, Float_t height);
  //set base chevron parameters
  virtual void SetChevron(Float_t hstep, Float_t shifty, Float_t fac);
  //set chevron parameters
  virtual void SetChParam(Float_t width, Float_t height,
      Float_t hstep, Float_t shifty, Float_t fac);
  //set all geometrical parameters
  virtual void SetY(Float_t y1, Float_t y2, Int_t nYdiv) ;
  virtual void SetChargeAngle(Float_t angle){fChargeAngle = angle;} //set angle of pad and charge distribution
                                                            //axes
  virtual void SetCurrentAngle(Float_t /*angle*/){return;}
  virtual void SetPadAngle(Float_t angle){fPadAngle = angle;} //set pad angle
  void SetInterpolationType(Int_t interx, Int_t intery) {fInterX=interx; fInterY =intery;}
  virtual void SetGauss(Float_t sigmaX,Float_t sigmaY , Float_t kNorm=1);
  //adjust PRF with GAUSIAN as generic GRF
  //if  direct = kTRUE then it does't convolute distribution
  virtual void SetCosh(Float_t sigmaX,Float_t sigmaY , Float_t kNorm=1);
  //adjust PRF with 1/Cosh  as generic GRF
  virtual void  SetGati(Float_t K3X, Float_t K3Y,
         Float_t padDistance,
         Float_t kNorm=1);
  void SetParam(TF2 *const GRF,Float_t kNorm,
    Float_t sigmaX=0, Float_t sigmaY=0);
  void SetNdiv(Int_t Ndiv){fNdiv=Ndiv;}
  virtual Float_t GetSigmaX() const {return fSigmaX;}
  virtual Float_t GetSigmaY() const {return fSigmaY;}


protected:
  void Update1();
  virtual void UpdateSigma();  //recalculate sigma of PRF
  Float_t GetPRFActiv(Float_t xin); //return PRF in point xin and actual y
  Float_t  * fcharge; 
  Float_t fY1;        
  Float_t fY2;        
  Int_t fNYdiv;       
  Int_t fNChargeArray;  
  Float_t * fChargeArray;  //[fNChargeArray]

  void DrawComment(TPaveText * comment);  //draw comments to picture
  //chevron parameters
  Float_t fHeightFull;  
  Float_t fHeightS;     
  Float_t fShiftY;      
  Float_t fWidth;       
  Float_t fK;           

  Double_t funParam[5];
  Int_t  fNPRF;      
  Int_t  fNdiv;      
  Float_t fDStep;    
  Float_t fKNorm;     
  Float_t fInteg;     
  TF2 *  fGRF;        

  Float_t fK3X;       
  Float_t fK3Y;       
  Float_t fPadDistance; 

  Float_t  fOrigSigmaX; 
  Float_t  fOrigSigmaY; 

  Float_t  fChargeAngle;
  Float_t  fPadAngle;   

  Float_t  fSigmaX;    
  Float_t  fSigmaY;    
  Float_t  fMeanX;     
  Float_t  fMeanY;     
  Int_t    fInterX;    
  Int_t    fInterY;    
  //calculated during update

  char  fType[5];       
  Float_t fCurrentY;    
  Float_t fDYtoWire;    
  Float_t fDStepM1;     
  //
  static const Double_t fgkDegtoRad; 
  static const Double_t fgkSQRT12; 
  static const Int_t   fgkNPRF;   

private:
  AliTPCPRF2D(const AliTPCPRF2D &prf);
  AliTPCPRF2D &operator = (const AliTPCPRF2D &/*prf*/) {return *this;}

  ClassDef(AliTPCPRF2D,1)
};

#endif /* ALITPCPRF2D_H */