libcruft-util/region.cpp

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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 Danny Robson <danny@blubinc.net>
*/
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#include "region.hpp"
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#include "enable_if.hpp"
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#include "debug.hpp"
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#include <type_traits>
using namespace util;
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/*
* Rect
*/
template <typename T>
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extent<T>::extent (const T _width, const T _height):
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width (_width),
height (_height)
{ ; }
template <typename T>
T
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extent<T>::area (void) const
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{ return width * height; }
template <typename T>
bool
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extent<T>::empty (void) const
{ return almost_equal (area(), 0); }
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template <typename T>
bool
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extent<T>::operator ==(const extent& rhs) const {
return almost_equal (width, rhs.width) &&
almost_equal (height, rhs.height);
}
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template <typename T>
void
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extent<T>::sanity (void) const
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{ check (width >= 0 && height >= 0); }
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namespace util {
template <>
void
extent<unsigned int>::sanity (void) const
{ return; }
}
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template struct extent<unsigned int>;
template struct extent<double>;
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/*
* Region
*/
template <typename T>
_region<T>::_region (T _x, T _y, T _width, T _height):
x (_x),
y (_y),
width (_width),
height (_height)
{ ; }
template <typename T>
T
_region<T>::area (void) const
{ return width * height; }
template <typename T>
bool
_region<T>::empty (void) const
{ return area () == 0; }
template <typename T>
bool
_region<T>::operator ==(const _region& rhs) const
{ return x == rhs.x &&
y == rhs.y &&
width == rhs.width &&
height == rhs.height; }
template <typename T>
void _region<T>::sanity (void) const
{ check (width >= 0 && height >= 0); }