💿🐜 Antkeeper source code
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99 lines
1.9 KiB
99 lines
1.9 KiB
/*
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* Copyright (C) 2021 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_MATH_CONSTANTS_HPP
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#define ANTKEEPER_MATH_CONSTANTS_HPP
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#include "math/matrix-type.hpp"
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#include "math/quaternion-type.hpp"
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#include "math/transform-type.hpp"
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namespace math {
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/**
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* Pi.
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*/
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template <class T>
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constexpr T pi = T(3.14159265358979323846);
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/**
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* Pi / 2.
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*/
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template <class T>
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constexpr T half_pi = pi<T> * T(0.5);
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/**
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* Pi * 2.
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*/
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template <class T>
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constexpr T two_pi = pi<T> * T(2);
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/**
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* 2x2 identity matrix.
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*/
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template <class T>
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constexpr matrix<T, 2, 2> identity2x2 =
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{{
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{1, 0},
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{0, 1}
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}};
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/**
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* 3x3 identity matrix.
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*/
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template <class T>
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constexpr matrix<T, 3, 3> identity3x3 =
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{{
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{1, 0, 0},
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{0, 1, 0},
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{0, 0, 1}
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}};
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/**
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* 4x4 identity matrix.
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*/
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template <class T>
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constexpr matrix<T, 4, 4> identity4x4 =
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{{
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{1, 0, 0, 0},
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{0, 1, 0, 0},
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{0, 0, 1, 0},
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{0, 0, 0, 1}
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}};
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/**
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* Unit quaternion.
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*/
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template <class T>
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constexpr quaternion<T> identity_quaternion = {T(1), T(0), T(0), T(0)};
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/**
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* Identity transform.
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*/
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template <class T>
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constexpr transform<T> identity_transform =
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{
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{T(0), T(0), T(0)},
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{T(1), T(0), T(0), T(0)},
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{T(1), T(1), T(1)}
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};
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} // namespace math
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#endif // ANTKEEPER_MATH_CONSTANTS_HPP
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