hslcolor.hxx

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#ifndef INCLUDED_SLIDESHOW_SOURCE_INC_HSLCOLOR_HXX
#define INCLUDED_SLIDESHOW_SOURCE_INC_HSLCOLOR_HXX
 
 
/* Definition of HSLColor class */
 
namespace slideshow::internal
    {
        class RGBColor;
 
        class HSLColor
        {
        public:
            HSLColor();
            HSLColor( double nHue, double nSaturation, double nLuminance );
            explicit HSLColor( const RGBColor& rColor );
 
            double getHue() const {  return maHSLTriple.mnHue; }
 
            double getSaturation() const {  return maHSLTriple.mnSaturation; }
 
            double getLuminance() const {  return maHSLTriple.mnLuminance; }
 
            struct HSLTriple
            {
                HSLTriple();
                HSLTriple( double nHue, double nSaturation, double nLuminance );
 
                double mnHue;
                double mnSaturation;
                double mnLuminance;
            };
 
        private:
            // default copy/assignment are okay
            // HSLColor(const HSLColor&);
            // HSLColor& operator=( const HSLColor& );
 
            HSLTriple   maHSLTriple;
 
        };
 
        bool operator==( const HSLColor& rLHS, const HSLColor& rRHS );
        bool operator!=( const HSLColor& rLHS, const HSLColor& rRHS );
        HSLColor operator+( const HSLColor& rLHS, const HSLColor& rRHS );
        HSLColor operator*( double nFactor, const HSLColor& rRHS );
 
        HSLColor interpolate( const HSLColor& rFrom, const HSLColor& rTo, double t, bool bCCW );
 
}
 
#endif // INCLUDED_SLIDESHOW_SOURCE_INC_HSLCOLOR_HXX
 
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