💿🐜 Antkeeper source code
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.3 KiB
92 lines
2.3 KiB
/*
|
|
* Copyright (C) 2021 Christopher J. Howard
|
|
*
|
|
* This file is part of Antkeeper source code.
|
|
*
|
|
* Antkeeper source code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Antkeeper source code is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef ANTKEEPER_COLOR_XYZ_HPP
|
|
#define ANTKEEPER_COLOR_XYZ_HPP
|
|
|
|
#include "math/math.hpp"
|
|
|
|
namespace color {
|
|
|
|
/// Functions which operate in the CIE XYZ colorspace.
|
|
namespace xyz {
|
|
|
|
/**
|
|
* Returns the luminance of a CIE XYZ color.
|
|
*
|
|
* @param x CIE XYZ color.
|
|
* @return return Luminance of @p x.
|
|
*/
|
|
template <class T>
|
|
T luminance(const math::vector3<T>& x);
|
|
|
|
/**
|
|
* Transforms a CIE XYZ color into the ACEScg colorspace.
|
|
*
|
|
* @param x CIE XYZ color.
|
|
* @return ACEScg color.
|
|
*/
|
|
template <class T>
|
|
math::vector3<T> to_acescg(const math::vector3<T>& x);
|
|
|
|
/**
|
|
* Transforms a CIE XYZ color into the linear sRGB colorspace.
|
|
*
|
|
* @param x CIE XYZ color.
|
|
* @return Linear sRGB color.
|
|
*/
|
|
template <class T>
|
|
math::vector3<T> to_srgb(const math::vector3<T>& x);
|
|
|
|
template <class T>
|
|
inline T luminance(const math::vector3<T>& x)
|
|
{
|
|
return x[1];
|
|
}
|
|
|
|
template <class T>
|
|
math::vector3<T> to_acescg(const math::vector3<T>& x)
|
|
{
|
|
static const math::matrix3<T> xyz_to_acescg
|
|
{{
|
|
{ 1.641023379694326 -0.663662858722983 0.011721894328375},
|
|
{-0.324803294184790 1.615331591657338 -0.008284441996237},
|
|
{-0.236424695237612, 0.016756347685530, 0.988394858539022}
|
|
}};
|
|
|
|
return xyz_to_acescg * x;
|
|
}
|
|
|
|
template <class T>
|
|
math::vector3<T> to_srgb(const math::vector3<T>& x)
|
|
{
|
|
static const math::matrix3<T> xyz_to_srgb
|
|
{{
|
|
{ 3.240969941904523, -0.969243636280880, 0.055630079696994},
|
|
{-1.537383177570094, 1.875967501507721, -0.203976958888977},
|
|
{-0.498610760293003, 0.041555057407176, 1.056971514242879}
|
|
}};
|
|
|
|
return xyz_to_srgb * x;
|
|
}
|
|
|
|
} // namespace xyz
|
|
} // namespace color
|
|
|
|
#endif // ANTKEEPER_COLOR_XYZ_HPP
|