HoughTrans.h

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//
// HoughTrans
//
// Mark's hough transform.
//
// Created:  M. Dorman -- May, 2005
//
// $Author: kordosky $ 
//
// $Revision: 1.3 $
// 
// $Name:  $
//
// $Id: HoughTrans.h,v 1.3 2005/08/02 11:22:56 kordosky Exp $
//



#ifndef houghtrans_h
#define houghtrans_h

#include "TH2F.h"
#include "MadBase.h"

class HoughTrans {

 public:
  ~HoughTrans();
  HoughTrans();
  HoughTrans(Int_t numSamps,Float_t lowGrad,Float_t highGrad);
  HoughTrans(Int_t numSamps,Float_t lowGrad,Float_t highGrad,Float_t lowIcept,Float_t highIcept);
  void SetVtxz(Float_t vertz);
  void FillHough(NtpSRStrip* stp);
  void FillHough(Float_t zPos, Float_t tPos);
  void ResetHough();
  void DeleteHough();
  Int_t GetPeakHeight();
  Int_t GetPeakGradBin();
  Int_t GetPeakIceptBin();
  Float_t GetPeakGradVal();
  Float_t GetPeakIceptVal();
  Float_t GetRms(Float_t frac);

  // the arguement frac should take values from [0,1] and
  // represents the fraction of fullness a bin must have
  // relative to the peak to be included in the RMS 
  // calculation (I use 0.75)

  // before calling GetRms() it is worth checking that the
  // peak height in Hough space is not zero, in fact 'low'
  // values for the peak height mean that the hits that 
  // contribute to the peak (and hence the 'track' found)
  // may not actually be a track at all

  TH2F* houghSpace;
  Float_t vtxz;

 private:

  //TH2F houghSpace;
  //Float_t vtxz;

};

#endif

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