timeCode.h

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//
// Copyright 2019 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_USD_SDF_TIME_CODE_H
#define PXR_USD_SDF_TIME_CODE_H
 
 
#include "pxr/pxr.h"
#include "pxr/usd/sdf/api.h"
#include "pxr/base/vt/traits.h"
 
#include <algorithm>
#include <functional>
#include <iosfwd>
 
PXR_NAMESPACE_OPEN_SCOPE
 
class SdfTimeCode
{
public:
 
    constexpr SdfTimeCode(double time = 0.0) noexcept : _time(time) {};
 
 
 
    constexpr bool operator==(const SdfTimeCode &rhs) const noexcept
        { return _time == rhs._time; }
    constexpr bool operator!=(const SdfTimeCode &rhs) const noexcept
        { return _time != rhs._time; }
    constexpr bool operator<(const SdfTimeCode &rhs) const noexcept
        { return _time < rhs._time; }
    constexpr bool operator>(const SdfTimeCode &rhs) const noexcept
        { return _time > rhs._time; }
    constexpr bool operator<=(const SdfTimeCode &rhs) const noexcept
        { return _time <= rhs._time; }
    constexpr bool operator>=(const SdfTimeCode &rhs) const noexcept
        { return _time >= rhs._time; }
 
    constexpr SdfTimeCode operator*(const SdfTimeCode &rhs) const noexcept
        { return SdfTimeCode(_time * rhs._time); }
    constexpr SdfTimeCode operator/(const SdfTimeCode &rhs) const noexcept
        { return SdfTimeCode(_time / rhs._time); }
    constexpr SdfTimeCode operator+(const SdfTimeCode &rhs) const noexcept
        { return SdfTimeCode(_time + rhs._time); } 
    constexpr SdfTimeCode operator-(const SdfTimeCode &rhs) const noexcept
        { return SdfTimeCode(_time - rhs._time); }
 
    explicit constexpr operator double() const noexcept {return _time;}
    
    size_t GetHash() const {
        return std::hash<double>()(_time);
    }
 
    struct Hash
    {
        size_t operator()(const SdfTimeCode &ap) const {
            return ap.GetHash();
        }
    };
 
    friend size_t hash_value(const SdfTimeCode &ap) { return ap.GetHash(); }
 
 
 
    constexpr double GetValue() const noexcept {
        return _time;
    }
 
 
private:
    friend inline void swap(SdfTimeCode &lhs, SdfTimeCode &rhs) {
        std::swap(lhs._time, rhs._time);
    }
 
    double _time;
};
 
// SdfTimeCode supports value transformations.
VT_VALUE_TYPE_CAN_TRANSFORM(SdfTimeCode);
 
 
inline constexpr 
SdfTimeCode operator*(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) * timeCode; }
 
inline constexpr 
SdfTimeCode operator/(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) / timeCode; }
 
inline constexpr 
SdfTimeCode operator+(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) + timeCode; }
 
inline constexpr 
SdfTimeCode operator-(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) - timeCode; }
 
inline constexpr 
bool operator==(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) == timeCode; }
 
inline constexpr 
bool operator!=(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) != timeCode; }
 
inline constexpr 
bool operator<(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) < timeCode; }
 
inline constexpr 
bool operator>(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) > timeCode; }
 
inline constexpr 
bool operator<=(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) <= timeCode; }
 
inline constexpr 
bool operator>=(double time, const SdfTimeCode &timeCode) noexcept
    { return SdfTimeCode(time) >= timeCode; }
 
SDF_API std::ostream& operator<<(std::ostream& out, const SdfTimeCode& ap);
 
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif // PXR_USD_SDF_TIME_CODE_H