HSIType Struct Reference

#include <KoColorSpaceMaths.h>

Static Public Member Functions
template<class TReal >
static TReal	getLightness (TReal r, TReal g, TReal b)
template<class TReal >
static TReal	getSaturation (TReal r, TReal g, TReal b)

Static Public Attributes
static constexpr bool	lightnessIsAverage = true

Detailed Description

Definition at line 924 of file KoColorSpaceMaths.h.

Member Function Documentation

getLightness()

template<class TReal >

static TReal HSIType::getLightness ( TReal r, TReal g, TReal b )

inlinestatic

Definition at line 927 of file KoColorSpaceMaths.h.

                                                                {
        return (r + g + b) * TReal(0.33333333333333333333); // (r + g + b) / 3.0
    }

getSaturation()

template<class TReal >

static TReal HSIType::getSaturation ( TReal r, TReal g, TReal b )

inlinestatic

Definition at line 932 of file KoColorSpaceMaths.h.

                                                                 {
        TReal max    = Arithmetic::max(r, g, b);
        TReal min    = Arithmetic::min(r, g, b);
        TReal chroma = max - min;
        
        return (chroma > std::numeric_limits<TReal>::epsilon()) ?
            (TReal(1.0) - min / getLightness(r, g, b)) : TReal(0.0);
    }

References getLightness(), Arithmetic::max(), and Arithmetic::min().

Member Data Documentation

lightnessIsAverage

constexpr bool HSIType::lightnessIsAverage = true

staticconstexpr

Definition at line 941 of file KoColorSpaceMaths.h.

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The documentation for this struct was generated from the following file:

• libs/pigment/KoColorSpaceMaths.h