libcruft-util/point.hpp

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/*
* This file is part of libgim.
*
* libgim 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.
*
* libgim 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 libgim. If not, see <http://www.gnu.org/licenses/>.
*
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* Copyright 2011-14 Danny Robson <danny@nerdcruft.net>
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*/
#ifndef __UTIL_POINT_HPP
#define __UTIL_POINT_HPP
#include "vector.hpp"
#include "detail/coord.hpp"
#include <array>
#include <initializer_list>
#include <iostream>
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namespace util {
/// An n-dimensional position in space.
template <size_t S, typename T>
struct point : public detail::coord<S,T> {
static_assert (S > 0, "point dimensions must be strictly positive.");
point ();
template <typename... U>
point (U ...u): detail::coord<S,T> {std::forward<U> (u)...} { ; }
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// point operators
T distance (const point &) const;
T distance2 (const point &) const;
T manhattan (const point &) const;
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vector<S,T> to (const point&) const;
// arithetic operators
point<S,T>& operator*= (T);
point<S,T> operator* (T) const;
point<S,T> operator- (const point<S,T>&) const;
point<S,T> operator- (const vector<S,T>&) const;
point<S,T>& operator-= (const vector<S,T>&);
point<S,T> operator+ (const vector<S,T>&) const;
point<S,T>& operator+= (const vector<S,T>&);
template <size_t D> point<D,T> redim (void) const;
void sanity (void) const;
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};
// free maths operators
template <size_t S, typename T> point<S,T> operator* (const vector<S,T>&, const point<S,T>&);
template <size_t S, typename T> point<S,T> operator* (const point<S,T>&, const vector<S,T>&);
// iostream operators
template <size_t S, typename T>
std::ostream& operator<< (std::ostream&, const point<S,T>&);
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// Convenience typedefs
typedef point<2,float> point2f;
typedef point<3,float> point3f;
typedef point<2,double> point2d;
typedef point<3,double> point3d;
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}
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#include "point.ipp"
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#endif // __UTIL_POINT_HPP