LogTransform.h

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/* -*- mode: c++ -*- */

#ifndef _LogTransform_H_
#define _LogTransform_H_

#include "UnaryTransform.h"

namespace hippodraw {

class AxisModelBase;
class AxisTick;

class MDL_HIPPOPLOT_API LogTransform : public UnaryTransform
{
private:

  std::vector < AxisTick > m_ticks;

  void setFirstTick( AxisModelBase & );
  void setTickStep( AxisModelBase & );
  const std::vector < AxisTick > &
  genTicks ( AxisModelBase & );
  
  double prevStep ( double current, AxisModelBase & axis );
  double nextStep ( double current, AxisModelBase & axis );

  const Range & adjustLogValues ( AxisModelBase & axis );
  
public:

  LogTransform ();

  LogTransform ( const LogTransform & );

  virtual ~LogTransform();

#ifdef CLONE_DEFECT
  virtual TransformBase * clone () const;
#else
  virtual LogTransform  * clone () const;
#endif

  virtual bool isLinear () const;
  
  virtual void transform ( double & x ) const;
  
  virtual void inverseTransform ( double & x ) const;
  
  virtual void transform ( std::vector< double > & x ) const;
  
  virtual void validate ( Range & ) const;
  
  virtual const std::vector < AxisTick > &
  setTicks ( AxisModelBase & axis );
  
  const Range & adjustValues ( AxisModelBase & axis, const Range & limit );

};

} // namespace hippodraw

#endif // _LogTransform_H_