PxBasicTemplates.h

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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
 
#ifndef PX_BASIC_TEMPLATES_H
#define PX_BASIC_TEMPLATES_H
 
#include "foundation/PxPreprocessor.h"
 
#if !PX_DOXYGEN
namespace physx
{
#endif
    template <typename A>
    struct PxEqual
    {
        bool operator()(const A& a, const A& b) const
        {
            return a == b;
        }
    };
 
    template <typename A>
    struct PxLess
    {
        bool operator()(const A& a, const A& b) const
        {
            return a < b;
        }
    };
 
    template <typename A>
    struct PxGreater
    {
        bool operator()(const A& a, const A& b) const
        {
            return a > b;
        }
    };
 
    template <class F, class S>
    class PxPair
    {
    public:
        F first;
        S second;
        PX_CUDA_CALLABLE PxPair() : first(F()), second(S())
        {
        }
        PX_CUDA_CALLABLE PxPair(const F& f, const S& s) : first(f), second(s)
        {
        }
        PX_CUDA_CALLABLE PxPair(const PxPair& p) : first(p.first), second(p.second)
        {
        }
        // CN - fix for /.../PxBasicTemplates.h(61) : warning C4512: 'physx::PxPair<F,S>' : assignment operator could
        // not be generated
        PX_CUDA_CALLABLE PxPair& operator=(const PxPair& p)
        {
            first = p.first;
            second = p.second;
            return *this;
        }
        PX_CUDA_CALLABLE bool operator==(const PxPair& p) const
        {
            return first == p.first && second == p.second;
        }
        PX_CUDA_CALLABLE bool operator<(const PxPair& p) const
        {
            if (first < p.first)
                return true;
            else
                return !(p.first < first) && (second < p.second);
        }
    };
 
    template <unsigned int A>
    struct PxLogTwo
    {
        static const unsigned int value = PxLogTwo<(A >> 1)>::value + 1;
    };
    template <>
    struct PxLogTwo<1>
    {
        static const unsigned int value = 0;
    };
 
    template <typename T>
    struct PxUnConst
    {
        typedef T Type;
    };
    template <typename T>
    struct PxUnConst<const T>
    {
        typedef T Type;
    };
 
    template <typename T>
    T PxPointerOffset(void* p, ptrdiff_t offset)
    {
        return reinterpret_cast<T>(reinterpret_cast<char*>(p) + offset);
    }
    template <typename T>
    T PxPointerOffset(const void* p, ptrdiff_t offset)
    {
        return reinterpret_cast<T>(reinterpret_cast<const char*>(p) + offset);
    }
 
    template <class T>
    PX_CUDA_CALLABLE PX_INLINE void PxSwap(T& x, T& y)
    {
        const T tmp = x;
        x = y;
        y = tmp;
    }
 
#if !PX_DOXYGEN
} // namespace physx
#endif
 
#endif