mi32/stereoshift.h

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#ifndef  INC_MI32_STEREOSHIFT_H
#define  INC_MI32_STEREOSHIFT_H

#ifndef  INC_MI32_POINT_H
#include <mi32/point.h>
#endif

#ifndef  INC_MI32_STEREOVIEW_H
#include <mi32/stereoview.h>
#endif


#ifndef GENERATING_DOXYGEN_OUTPUT
class POLYLINE;
#endif


class STEREOSHIFT {
   public:

      STEREOSHIFT (
         ) : m_Scale(0), m_ZeroValue(0), m_View(STEREOVIEW_None) { }

      void CalcPointDual (
         const DPOINT3D& ptBase,                
         DPOINT2D& ptLeft,                      
         DPOINT2D& ptRight                      
         ) const;

      void CalcPointLeft (
         const DPOINT3D& ptBase,                
         DPOINT2D& ptDisplaced                  
         ) const { ptDisplaced.x = ptBase.x - CalcShift(ptBase.z); ptDisplaced.y = ptBase.y; }

      void CalcPointRight (
         const DPOINT3D& ptBase,                
         DPOINT2D& ptDisplaced                  
         ) const { ptDisplaced.x = ptBase.x + CalcShift(ptBase.z); ptDisplaced.y = ptBase.y; }

      void CalcPolylineDual (
         const POLYLINE& plBase,                
         POLYLINE& plLeft,                      
         POLYLINE& plRight                      
         ) const;

      void CalcPolylineSingle (
         const POLYLINE& plBase,                
         POLYLINE& plDisplaced                  
         ) const;

      double CalcShift (
         double z
         ) const { return ((m_ZeroValue - z) * m_Scale); }

      double GetScale () const
         { return (m_Scale); }

      STEREOVIEW GetView () const
         { return (m_View); }

      double GetZeroValue () const
         { return (m_ZeroValue); }

      void Invalidate ()
         { m_Scale = 0; m_View = STEREOVIEW_None; }
      
      bool IsValid () const
         { return (m_Scale != 0 && m_View != STEREOVIEW_None); }

      void Set (
         STEREOVIEW View,                    
         double Scale,                       
         double ZeroValue                    
         );

   private:
      #ifndef GENERATING_DOXYGEN_OUTPUT
      double m_Scale;
      double m_ZeroValue;
      STEREOVIEW m_View;
      #endif
   };

#endif   // INC_MI32_STEREOSHIFT_H

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