260 lines
8.6 KiB
C++
260 lines
8.6 KiB
C++
/**
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This file is a part of the rexy/r0nk/atlas project
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Copyright (C) 2020 rexy712
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef REXY_MAT_HPP
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#define REXY_MAT_HPP
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#include <cstdlib> //size_t
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#include <utility> //integer_sequence
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#include <type_traits> //decay_t, is_same, integral_constant
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#include "detail/math.hpp"
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namespace math{
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template<typename T, size_t W, size_t H>
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class matrix_base
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{
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static_assert(W > 0, "Cannot have 0 columns matrix");
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static_assert(H > 0, "Cannot have 0 rows matrix");
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public:
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using value_type = T;
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using size_type = size_t;
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using pointer = value_type*;
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using const_pointer = const value_type*;
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using reference = value_type&;
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using const_reference = const value_type&;
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static constexpr size_type Columns = W;
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static constexpr size_type Rows = H;
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protected:
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value_type m_data[W*H];
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protected:
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template<size_t... Ss>
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constexpr matrix_base(std::integer_sequence<size_type,Ss...>);
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public:
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//Default construct as identity when square, zero otherwise
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constexpr matrix_base();
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//Range initializing constructors
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constexpr explicit matrix_base(detail::zero_initialize_t);
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constexpr explicit matrix_base(detail::no_initialize_t);
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//Value initializing constructors
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constexpr explicit matrix_base(value_type v);
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template<typename... Args>
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constexpr explicit matrix_base(Args&&... args);
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//Copying constructors
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constexpr matrix_base(const matrix_base&) = default;
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constexpr matrix_base(matrix_base&&) = default;
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template<typename U>
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constexpr matrix_base(const matrix_base<U,Columns,Rows>& m);
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~matrix_base() = default;
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constexpr matrix_base& operator=(const matrix_base&) = default;
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constexpr matrix_base& operator=(matrix_base&&) = default;
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template<typename U>
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constexpr matrix_base& operator=(const matrix_base<U,Columns,Rows>& m);
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//Getters/Setters
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constexpr auto operator[](size_type x);
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constexpr auto operator[](size_type x)const;
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constexpr reference get(size_type x, size_type y);
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constexpr const_reference get(size_type x, size_type y)const;
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constexpr reference get(size_type i);
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constexpr const_reference get(size_type i)const;
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constexpr size_type columns()const;
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constexpr size_type rows()const;
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constexpr size_type size()const;
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constexpr pointer raw();
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constexpr const_pointer raw()const;
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constexpr operator pointer();
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constexpr operator const_pointer()const;
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};
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template<typename T, size_t W, size_t H>
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class matrix : public matrix_base<T,W,H>
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{
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private:
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using base = matrix_base<T,W,H>;
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public:
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using value_type = typename base::value_type;
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using size_type = typename base::size_type;
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using pointer = typename base::pointer;
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using const_pointer = typename base::const_pointer;
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using reference = typename base::reference;
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using const_reference = typename base::const_reference;
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public:
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using base::base;
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constexpr matrix(const matrix&) = default;
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constexpr matrix(matrix&&) = default;
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~matrix() = default;
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//Assignement
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constexpr matrix& operator=(const matrix&) = default;
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constexpr matrix& operator=(matrix&&) = default;
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template<typename U>
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constexpr matrix& operator=(const matrix<U,W,H>& m);
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};
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template<typename T, size_t W>
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class matrix<T,W,W> : public matrix_base<T,W,W>
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{
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private:
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using base = matrix_base<T,W,W>;
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public:
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using value_type = typename base::value_type;
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using size_type = typename base::size_type;
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using pointer = typename base::pointer;
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using const_pointer = typename base::const_pointer;
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using reference = typename base::reference;
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using const_reference = typename base::const_reference;
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public:
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using base::base;
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constexpr matrix(const matrix&) = default;
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constexpr matrix(matrix&&) = default;
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constexpr explicit matrix(detail::id_initialize_t);
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~matrix() = default;
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//Assignement
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constexpr matrix& operator=(const matrix&) = default;
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constexpr matrix& operator=(matrix&&) = default;
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template<typename U>
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constexpr matrix& operator=(const matrix<U,W,W>& m);
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//square matrix arithmetic operations
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constexpr value_type determinate()const;
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constexpr value_type trace()const;
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constexpr matrix transpose()const;
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constexpr matrix inverse()const;
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};
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template<typename T, size_t R>
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constexpr T determinate(const matrix<T,R,R>& m);
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template<typename T, size_t R>
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constexpr matrix<T,R,R> inverse(const matrix<T,R,R>& m);
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template<typename T>
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matrix<T,2,2> rotation2d_pure(T angle);
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template<typename T>
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constexpr matrix<T,2,2> rotation2d_pure(T sin, T cos);
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template<typename T>
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constexpr matrix<T,2,2> scale2d(T x, T y);
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template<typename T>
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matrix<T,3,3> rotation2d(T angle);
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template<typename T>
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constexpr matrix<T,3,3> rotation2d(T sin, T cos);
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template<typename T>
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matrix<T,3,3> rotation2d(T x, T y, T z);
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template<typename T>
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matrix<T,4,4> fov_projection(T fov, T asp, T near, T far);
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template<typename T>
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matrix<T,4,4> fov_asymetric_projection(T fovl, T fovr, T fovb, T fovt, T asp, T near, T far);
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template<typename T>
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matrix<T,4,4> ortho_projection(T w, T h, T n, T f);
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template<typename T>
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matrix<T,4,4> ortho_asymetric_projection(T l, T r, T b, T t, T n, T f);
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template<typename T>
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constexpr matrix<T,4,4> rotation3d(T angle_x, T angle_y, T angle_z);
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template<typename T>
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constexpr matrix<T,4,4> translation3d(T x, T y, T z);
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template<typename T>
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constexpr matrix<T,4,4> scale3d(T x, T y, T z);
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namespace detail{
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template<typename T>
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struct is_matrix_helper {
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template<typename U, size_t W, size_t H>
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static std::true_type test(matrix<U,W,H>*);
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static std::false_type test(void*);
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static constexpr bool value = std::is_same<std::true_type,decltype(test(static_cast<std::decay_t<T>*>(nullptr)))>::value;
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};
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}
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template<typename... Ms>
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struct is_matrix {
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static constexpr bool value = (detail::is_matrix_helper<Ms>::value && ...);
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};
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namespace detail{
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template<typename M1, typename M2>
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struct are_same_size_matrix {
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using l = std::decay_t<M1>;
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using r = std::decay_t<M2>;
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static constexpr bool value = is_matrix<M1,M2>::value && l::Columns == r::Columns && l::Rows == r::Rows;
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};
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template<typename... Ms>
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using enable_if_matrix = std::enable_if_t<is_matrix<Ms...>::value,int>;
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template<typename M1, typename M2>
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using enable_if_eq_matrix = std::enable_if_t<are_same_size_matrix<M1,M2>::value,int>;
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}
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template<typename T, typename U, size_t W, size_t H>
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constexpr bool operator==(const matrix<T,W,H>& left, const matrix<U,W,H> right);
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template<typename T, typename U, size_t W, size_t H>
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constexpr bool operator!=(const matrix<T,W,H>& left, const matrix<U,W,H> right);
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template<typename T, typename U, size_t R1, size_t C1, size_t C2>
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constexpr auto operator*(const matrix<T,C1,R1>& left, const matrix<U,C2,C1>& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr auto operator*(const matrix<T,C,R>& left, U&& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr auto operator*(U&& left, const matrix<T,C,R>& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr auto operator/(const matrix<T,C,R>& left, U&& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr auto operator+(const matrix<T,C,R>& left, const matrix<U,C,R>& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr auto operator-(const matrix<T,C,R>& left, const matrix<U,C,R>& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr auto operator-(const matrix<T,C,R>& left);
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template<typename T, typename U, size_t R1, size_t C1, size_t C2>
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constexpr decltype(auto) operator*=(matrix<T,C1,R1>& left, const matrix<U,C2,C1>& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr decltype(auto) operator*=(matrix<T,C,R>& left, U&& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr decltype(auto) operator/=(matrix<T,C,R>& left, U&& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr decltype(auto) operator+=(matrix<T,C,R>& left, const matrix<U,C,R>& right);
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template<typename T, typename U, size_t C, size_t R>
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constexpr decltype(auto) operator-=(matrix<T,C,R>& left, const matrix<U,C,R>& right);
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}
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#include "mat.tpp"
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#endif
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