---

contrast.h

//---------------------------------------------------------------------------

#ifndef contrastH
#define contrastH
//---------------------------------------------------------------------------

class TContrast
{

        private:
                float _ratio;
                int _size;      // max value of input
                float _lower;
                float _upper;
                float _dist;    // distance between _lower and _upper
                int _lowerAbs;
                int _upperAbs;

                void __fastcall setLower(float val);
                void __fastcall setUpper(float val);

        public:
                TContrast(int s)
                : _size(s),
                  _ratio((float)0xFF/(float)s),
                  _lower(0.0),
                  _upper(1.0),
                  _dist(1.0),
                  _lowerAbs(0),
                  _upperAbs(s)
                {}

                __property float Lower = { read=_lower, write=setLower };
                __property float Upper = { read=_upper, write=setUpper };

                unsigned char __fastcall getVal(__int16 val);
                
};
#endif
 

---