libcruft-util/matrix.hpp

90 lines
2.6 KiB
C++

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2011-2014 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_MATRIX_HPP
#define __UTIL_MATRIX_HPP
#include "point.hpp"
#include <iostream>
namespace util {
template <typename T>
struct matrix {
T values[4][4];
static const size_t rows = 4;
static const size_t cols = 4;
matrix& transpose (void);
matrix transposed (void) const;
matrix<T> inverse (void) const;
matrix<T>& invert (void);
matrix<T> inverse_affine (void) const;
matrix<T>& invert_affine (void);
T det (void) const;
matrix<T> operator* (const matrix<T>&) const;
matrix<T>& operator*=(const matrix<T>&);
vector<4,T> operator* (const vector<4,T>&) const;
point<4,T> operator* (const point<4,T> &) const;
matrix<T> operator* (T) const;
matrix<T>& operator*= (T);
matrix<T> operator/ (T) const;
matrix<T>& operator/= (T);
bool operator== (const matrix<T>&) const;
bool is_affine (void) const;
template <typename U>
matrix<U> cast (void) const;
// Perspective matrices
static matrix<T> ortho (T left, T right, T bottom, T top, T near, T far);
static matrix<T> ortho2D (T left, T right, T bottom, T top);
static matrix<T> perspective (T fov, T aspect, T near, T far);
static matrix<T> look_at (point<3,T> eye, point<3,T> centre, vector<3,T> up);
// Affine matrices
static matrix<T> translate (util::vector<2,T>);
static matrix<T> translate (util::vector<3,T>);
static matrix<T> scale (util::vector<3,T>);
static matrix<T> scale (T);
static matrix<T> rotate (T angle, util::vector<3,T> about);
// Constant matrices
static const matrix<T> IDENTITY;
static const matrix<T> ZEROES;
};
template <typename T> using matrix4 = matrix<T>;
typedef matrix<float> matrixf;
typedef matrix<float> matrix4f;
template <typename T>
std::ostream& operator<< (std::ostream&, const matrix<T>&);
}
#include "matrix.ipp"
#endif