107 lines
3.8 KiB
C++
107 lines
3.8 KiB
C++
/********************************************************************************
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* ReactPhysics3D physics library, http://www.reactphysics3d.com *
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* Copyright (c) 2010-2020 Daniel Chappuis *
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*********************************************************************************
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* *
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* This software is provided 'as-is', without any express or implied warranty. *
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* In no event will the authors be held liable for any damages arising from the *
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* use of this software. *
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* *
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* Permission is granted to anyone to use this software for any purpose, *
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* including commercial applications, and to alter it and redistribute it *
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* freely, subject to the following restrictions: *
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* *
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* 1. The origin of this software must not be misrepresented; you must not claim *
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* that you wrote the original software. If you use this software in a *
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* product, an acknowledgment in the product documentation would be *
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* appreciated but is not required. *
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* *
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* 2. Altered source versions must be plainly marked as such, and must not be *
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* misrepresented as being the original software. *
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* *
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* 3. This notice may not be removed or altered from any source distribution. *
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* *
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********************************************************************************/
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#ifndef REACTPHYSICS3D_PAIR_H
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#define REACTPHYSICS3D_PAIR_H
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// Libraries
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#include <reactphysics3d/configuration.h>
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#include <reactphysics3d/memory/MemoryAllocator.h>
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#include <reactphysics3d/containers/containers_common.h>
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#include <cstring>
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#include <iterator>
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namespace reactphysics3d {
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// Class Pair
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/**
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* This class represents a simple generic pair
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*/
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template<typename T1, typename T2>
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class Pair {
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public:
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// -------------------- Attributes -------------------- //
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/// First element of the pair
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T1 first;
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/// Second element of the pair
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T2 second;
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// -------------------- Methods -------------------- //
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/// Constructor
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Pair(const T1& item1, const T2& item2) : first(item1), second(item2) {
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}
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/// Copy constructor
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Pair(const Pair<T1, T2>& pair) : first(pair.first), second(pair.second) {
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}
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/// Destructor
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~Pair() = default;
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/// Overloaded equality operator
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bool operator==(const Pair<T1, T2>& pair) const {
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return first == pair.first && second == pair.second;
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}
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/// Overloaded not equal operator
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bool operator!=(const Pair<T1, T2>& pair) const {
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return !((*this) == pair);
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}
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/// Overloaded assignment operator
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Pair<T1, T2>& operator=(const Pair<T1, T2>& pair) {
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first = pair.first;
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second = pair.second;
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return *this;
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}
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};
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}
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// Hash function for a reactphysics3d Pair
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namespace std {
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template <typename T1, typename T2> struct hash<reactphysics3d::Pair<T1, T2>> {
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size_t operator()(const reactphysics3d::Pair<T1, T2>& pair) const {
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std::size_t seed = 0;
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reactphysics3d::hash_combine<T1>(seed, pair.first);
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reactphysics3d::hash_combine<T2>(seed, pair.second);
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return seed;
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}
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};
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}
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#endif
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