164 lines
4.3 KiB
C++
164 lines
4.3 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2010-2015 Danny Robson <danny@nerdcruft.net>
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*/
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#include "extent.hpp"
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#include "debug.hpp"
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#include "maths.hpp"
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#include <cmath>
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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util::extent<T>::extent (const T _width, const T _height):
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w (_width),
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h (_height)
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{ ; }
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//-----------------------------------------------------------------------------
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template <typename T>
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util::extent<T>::extent (const util::extent<T> &rhs):
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w (rhs.w),
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h (rhs.h)
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{ ; }
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//-----------------------------------------------------------------------------
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template <typename T>
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util::extent<T>&
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util::extent<T>::operator= (const util::extent<T> &rhs)
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{
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w = rhs.w;
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h = rhs.h;
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return *this;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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T
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util::extent<T>::diameter (void) const
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{
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return static_cast<T> (sqrt (w * w + h * h));
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}
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//-----------------------------------------------------------------------------
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template <typename T>
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T
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util::extent<T>::area (void) const
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{
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return w * h;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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util::extent<T>
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util::extent<T>::expanded (util::vector<2,T> size) const
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{
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return {
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w + size.x,
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h + size.y
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};
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}
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//-----------------------------------------------------------------------------
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template <typename T>
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util::extent<T>
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util::extent<T>::expanded (T t) const
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{
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return expanded (util::vector<2,T> {t});
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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float
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util::extent<T>::aspect (void) const
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{
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return static_cast<float> (w) / static_cast<float> (h);
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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bool
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util::extent<T>::empty (void) const
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{
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return almost_equal (area(), 0);
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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bool
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util::extent<T>::operator ==(const extent& rhs) const
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{
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return almost_equal (w, rhs.w) &&
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almost_equal (h, rhs.h);
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}
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///////////////////////////////////////////////////////////////////////////////
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namespace debug {
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template <typename T>
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struct validator<util::extent,T> {
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static bool is_valid (const util::extent<T> &e)
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{
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return e.w >= 0 && e.h >= 0;
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}
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};
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}
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template bool debug::valid (const util::extent<float>&);
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template bool debug::valid (const util::extent<double>&);
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template bool debug::valid (const util::extent<uint16_t>&);
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template bool debug::valid (const util::extent<uint32_t>&);
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template bool debug::valid (const util::extent<uint64_t>&);
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///////////////////////////////////////////////////////////////////////////////
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template <typename T>
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std::ostream&
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util::operator<< (std::ostream &os, util::extent<T> e)
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{
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os << "[" << e.w << ", " << e.h << "]";
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return os;
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}
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template std::ostream& util::operator<< (std::ostream&, util::extent<uint16_t>);
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template std::ostream& util::operator<< (std::ostream&, util::extent<uint32_t>);
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template std::ostream& util::operator<< (std::ostream&, util::extent<uint64_t>);
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template std::ostream& util::operator<< (std::ostream&, util::extent<float>);
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template std::ostream& util::operator<< (std::ostream&, util::extent<double>);
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//-----------------------------------------------------------------------------
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namespace util {
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template struct extent<uint32_t>;
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template struct extent<uint64_t>;
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template struct extent<float>;
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template struct extent<double>;
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}
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