libcruft-util/vector.hpp

93 lines
2.8 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 2011-2016 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_VECTOR_HPP
#define __UTIL_VECTOR_HPP
#include "coord.hpp"
#include "json/fwd.hpp"
namespace util {
template <size_t S, typename T>
struct vector : public coord::base<S,T,vector,coord::xyzw,coord::stpq>
{
using coord::base<S,T,util::vector,coord::xyzw,coord::stpq>::base;
// representations
template <size_t D> vector<D,T> homog (void) const;
// constants
static constexpr vector<S,T> ones (void);
static constexpr vector<S,T> zeros (void);
void sanity (void) const;
};
template <typename T>
constexpr
vector<3,T>
cross (vector<3,T>, vector<3,T>);
template <typename T>
constexpr
T
cross (vector<2,T>, vector<2,T>);
// polar/cartesian conversions; assumes (mag, angle) form.
template <typename T> vector<2,T> polar_to_cartesian (vector<2,T>);
template <typename T> vector<2,T> cartesian_to_polar (vector<2,T>);
template <typename T> vector<3,T> spherical_to_cartesian (vector<3,T>);
template <typename T> vector<3,T> cartesian_to_spherical (vector<3,T>);
template <typename T> vector<2,T> to_euler (vector<3,T>);
template <typename T> vector<3,T> from_euler (vector<2,T>);
// output and serialisation operators
template <size_t S, typename T>
const json::tree::node&
operator>> (const json::tree::node&, vector<S,T>&);
template <typename T> using vector2 = vector<2,T>;
template <typename T> using vector3 = vector<3,T>;
template <typename T> using vector4 = vector<4,T>;
template <size_t S> using vectoru = vector<S,unsigned>;
template <size_t S> using vectori = vector<S,int>;
template <size_t S> using vectorf = vector<S,float>;
typedef vector2<unsigned> vector2u;
typedef vector3<unsigned> vector3u;
typedef vector4<unsigned> vector4u;
typedef vector2<int> vector2i;
typedef vector3<int> vector3i;
typedef vector4<int> vector4i;
typedef vector2<float> vector2f;
typedef vector3<float> vector3f;
typedef vector4<float> vector4f;
typedef vector2<double> vector2d;
typedef vector3<double> vector3d;
typedef vector4<double> vector4d;
}
#include "vector.ipp"
#endif