libcruft-util/extent.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/>.
*
* Copyright 2010-2015 Danny Robson <danny@nerdcruft.net>
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*/
#ifndef __UTIL_EXTENT_HPP
#define __UTIL_EXTENT_HPP
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#include "vector.hpp"
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#include <iostream>
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namespace util {
/**
* A pure two-dimensional size, without positioning
*/
template <typename T>
struct extent {
T w, h;
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extent (const T _width, const T _height);
extent (const extent&);
extent& operator= (const extent&);
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extent () = default;
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T area (void) const;
T diameter (void) const;
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extent<T> expanded (util::vector<2,T>) const;
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float aspect (void) const;
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bool empty (void) const;
bool operator ==(const extent& rhs) const;
bool operator !=(const extent& rhs) const
{ return !(*this == rhs); }
template <typename U>
extent<U> cast (void) const;
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void sanity (void) const;
};
typedef extent<size_t> extent2u;
typedef extent<float> extent2f;
template <typename T>
std::ostream& operator<< (std::ostream&, util::extent<T>);
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}
#include "extent.ipp"
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#endif