HoughTransformation.h

//-----------------------------------------------------------------------------
// $Id$
//-----------------------------------------------------------------------------
// Filename : HoughTransformation.h
// Section  : TRG CDC
// Owner    : Yoshihito Iwasaki
// Email    : yoshihito.iwasaki@kek.jp
//-----------------------------------------------------------------------------
// Description : An abstract class to represent a Hough transformation.
//-----------------------------------------------------------------------------
// $Log$
//-----------------------------------------------------------------------------
 
#ifndef TRGCDCHoughTransformation_FLAG_
#define TRGCDCHoughTransformation_FLAG_
 
#include <string>
 
#ifdef TRGCDC_SHORT_NAMES
#define TCHTransformation TRGCDCHoughTransformation
#endif
 
namespace Belle2 {
  class TRGPoint2D;
 
  class TRGCDCHoughTransformation {
 
  public:
    TRGCDCHoughTransformation(const std::string& name);
 
    virtual ~TRGCDCHoughTransformation();
 
  public:// Selectors
    std::string name(void) const;
 
    virtual float y(float xReal, float yReal, float x) const = 0;
 
    virtual bool diverge(float xReal, float yReal, float x0, float x1)
    const = 0;
 
    virtual bool positiveDiverge(float xReal, float yReal, float x0, float x1)
    const = 0;
 
    virtual bool negativeDiverge(float xReal, float yReal, float x0, float x1)
    const = 0;
 
//     /// returns a gradient at given regsion.
//     virtual float gradient(float xReal, float yReal, float x) const = 0;
 
    virtual TRGPoint2D convert(const TRGPoint2D&) const;
 
  public:// Modifiers
 
  private:
    const std::string _name;
  };
 
  inline
  std::string
  TRGCDCHoughTransformation::name(void) const
  {
    return _name;
  }
 
} // namespace Belle
 
#endif