/*
 * Copyright (C) 2023  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_ILLUMINANT_HPP
#define ANTKEEPER_COLOR_ILLUMINANT_HPP

#include "math/vector.hpp"

namespace color {

/**
 * CIE standard illuminants.
 *
 * @see https://en.wikipedia.org/wiki/Standard_illuminant
 */
namespace illuminant {

/// CIE 1931 2 Degree Standard Observer illuminants.
namespace deg2 {

	template <class T>
	constexpr math::vector2<T> a    = {T{0.44757}, T{0.40745}};
	template <class T>
	constexpr math::vector2<T> b    = {T{0.34842}, T{0.35161}};
	template <class T>
	constexpr math::vector2<T> c    = {T{0.31006}, T{0.31616}};
	template <class T>
	constexpr math::vector2<T> d50  = {T{0.34567}, T{0.35850}};
	template <class T>
	constexpr math::vector2<T> d55  = {T{0.33242}, T{0.34743}};
	template <class T>
	constexpr math::vector2<T> d65  = {T{0.31271}, T{0.32902}};
	template <class T>
	constexpr math::vector2<T> d75  = {T{0.29902}, T{0.31485}};
	template <class T>
	constexpr math::vector2<T> d93  = {T{0.28315}, T{0.29711}};
	template <class T>
	constexpr math::vector2<T> e    = {T{0.33333}, T{0.33333}};
	template <class T>
	constexpr math::vector2<T> f1   = {T{0.31310}, T{0.33727}};
	template <class T>
	constexpr math::vector2<T> f2   = {T{0.37208}, T{0.37529}};
	template <class T>
	constexpr math::vector2<T> f3   = {T{0.40910}, T{0.39430}};
	template <class T>
	constexpr math::vector2<T> f4   = {T{0.44018}, T{0.40329}};
	template <class T>
	constexpr math::vector2<T> f5   = {T{0.31379}, T{0.34531}};
	template <class T>
	constexpr math::vector2<T> f6   = {T{0.37790}, T{0.38835}};
	template <class T>
	constexpr math::vector2<T> f7   = {T{0.31292}, T{0.32933}};
	template <class T>
	constexpr math::vector2<T> f8   = {T{0.34588}, T{0.35875}};
	template <class T>
	constexpr math::vector2<T> f9   = {T{0.37417}, T{0.37281}};
	template <class T>
	constexpr math::vector2<T> f10  = {T{0.34609}, T{0.35986}};
	template <class T>
	constexpr math::vector2<T> f11  = {T{0.38052}, T{0.37713}};
	template <class T>
	constexpr math::vector2<T> f12  = {T{0.43695}, T{0.40441}};
	template <class T>
	constexpr math::vector2<T> led_b1   = {T{0.4560}, T{0.4078}};
	template <class T>
	constexpr math::vector2<T> led_b2   = {T{0.4357}, T{0.4012}};
	template <class T>
	constexpr math::vector2<T> led_b3   = {T{0.3756}, T{0.3723}};
	template <class T>
	constexpr math::vector2<T> led_b4   = {T{0.3422}, T{0.3502}};
	template <class T>
	constexpr math::vector2<T> led_b5   = {T{0.3118}, T{0.3236}};
	template <class T>
	constexpr math::vector2<T> led_bh1  = {T{0.4474}, T{0.4066}};
	template <class T>
	constexpr math::vector2<T> led_rgb1 = {T{0.4557}, T{0.4211}};
	template <class T>
	constexpr math::vector2<T> led_v1   = {T{0.4560}, T{0.4548}};
	template <class T>
	constexpr math::vector2<T> led_v2   = {T{0.3781}, T{0.3775}};

} // deg2

/// CIE 1964 10 Degree Standard Observer illuminants.
namespace deg10 {

	template <class T>
	constexpr math::vector2<T> a   = {T{0.45117}, T{0.40594}};
	template <class T>
	constexpr math::vector2<T> b   = {T{0.34980}, T{0.35270}};
	template <class T>
	constexpr math::vector2<T> c   = {T{0.31039}, T{0.31905}};
	template <class T>
	constexpr math::vector2<T> d50 = {T{0.34773}, T{0.35952}};
	template <class T>
	constexpr math::vector2<T> d55 = {T{0.33411}, T{0.34877}};
	template <class T>
	constexpr math::vector2<T> d65 = {T{0.31382}, T{0.33100}};
	template <class T>
	constexpr math::vector2<T> d75 = {T{0.29968}, T{0.31740}};
	template <class T>
	constexpr math::vector2<T> d93 = {T{0.28327}, T{0.30043}};
	template <class T>
	constexpr math::vector2<T> e   = {T{0.33333}, T{0.33333}};
	template <class T>
	constexpr math::vector2<T> f1  = {T{0.31811}, T{0.33559}};
	template <class T>
	constexpr math::vector2<T> f2  = {T{0.37925}, T{0.36733}};
	template <class T>
	constexpr math::vector2<T> f3  = {T{0.41761}, T{0.38324}};
	template <class T>
	constexpr math::vector2<T> f4  = {T{0.44920}, T{0.39074}};
	template <class T>
	constexpr math::vector2<T> f5  = {T{0.31975}, T{0.34246}};
	template <class T>
	constexpr math::vector2<T> f6  = {T{0.38660}, T{0.37847}};
	template <class T>
	constexpr math::vector2<T> f7  = {T{0.31569}, T{0.32960}};
	template <class T>
	constexpr math::vector2<T> f8  = {T{0.34902}, T{0.35939}};
	template <class T>
	constexpr math::vector2<T> f9  = {T{0.37829}, T{0.37045}};
	template <class T>
	constexpr math::vector2<T> f10 = {T{0.35090}, T{0.35444}};
	template <class T>
	constexpr math::vector2<T> f11 = {T{0.38541}, T{0.37123}};
	template <class T>
	constexpr math::vector2<T> f12 = {T{0.44256}, T{0.39717}};
	
} // namespace deg10

} // namespace illuminant

} // namespace color

#endif // ANTKEEPER_COLOR_ILLUMINANT_HPP