Kino: kino::basic_hsv Class Reference

00183     {
00184         const sample_type red = sample_traits::convert(RHS.red);
00185         const sample_type green = sample_traits::convert(RHS.green);
00186         const sample_type blue = sample_traits::convert(RHS.blue);
00187         
00188         const sample_type maxcomponent = std::max(std::max(red, green), blue);
00189         const sample_type mincomponent = std::min(std::min(red, green), blue);
00190         const sample_type difference = maxcomponent - mincomponent;
00191 
00192         value = maxcomponent;
00193 
00194         saturation = maxcomponent ? difference / maxcomponent : sample_traits::minimum();
00195 
00196         if(saturation != sample_traits::minimum())
00197             {
00198                 const sample_type reddistance = (maxcomponent - red) / difference;
00199                 const sample_type greendistance = (maxcomponent - green) / difference;
00200                 const sample_type bluedistance = (maxcomponent - blue) / difference;
00201 
00202                 if (RHS.red == std::max(std::max(RHS.red, RHS.green), RHS.blue))
00203                     {
00204                         hue = bluedistance - greendistance;
00205                     }
00206                 else if (RHS.green == std::max(std::max(RHS.red, RHS.green), RHS.blue))
00207                     {
00208                         hue = 2 + reddistance - bluedistance;
00209                     }
00210                 else
00211                     {
00212                         hue = 4 + greendistance - reddistance;
00213                     }
00214 
00215                 hue *= 60;
00216                 while(hue < 0)
00217                     hue += 360;
00218                 while(hue >= 360)
00219                     hue -= 360;
00220             }
00221         else
00222             {
00223                 hue = sample_traits::minimum();
00224             }
00225     }


Public Types
typedef double	sample_type
typedef color_traits< sample_type >	sample_traits
typedef basic_hsv	this_type
Public Member Functions
	basic_hsv ()
	Default constructor sets all samples to zero.
	basic_hsv (const sample_type Hue, const sample_type Saturation, const sample_type Value)
	Constructor that takes hue, saturation, and value samples.
template<typename ForeignType, typename ForeignTraits>
	basic_hsv (const basic_luma< ForeignType, ForeignTraits > &RHS)
template<typename ForeignType>
	basic_hsv (const ForeignType &RHS)
Public Attributes
sample_type	hue
sample_type	saturation
sample_type	value
Friends
std::ostream &	operator<< (std::ostream &Stream, const basic_hsv &RHS)
	Serialization.
std::istream &	operator>> (std::istream &Stream, basic_hsv &RHS)
	Deserialization.

kino::basic_hsv Class Reference

Public Types

Public Member Functions

Public Attributes

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Friends And Related Function Documentation

Member Data Documentation