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/*
* This file is part of the Colobot: Gold Edition source code
* Copyright (C) 2001-2023, Daniel Roux, EPSITEC SA & TerranovaTeam
* http://epsitec.ch; http://colobot.info; http://github.com/colobot
*
* This program 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.
*
* This program 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 this program. If not, see http://gnu.org/licenses
*/
/**
* \file common/timeutils.h
* \brief Some useful cross-platform operations on timestamps
*/
#include <chrono>
namespace TimeUtils
{
enum class TimeUnit
{
SECONDS,
MILLISECONDS,
MICROSECONDS
};
using TimeStamp = std::chrono::time_point<std::chrono::high_resolution_clock>;
//! Linearly interpolates between two timestamps.
TimeStamp Lerp(TimeStamp a, TimeStamp b, float t);
//! Returns a difference between two timestamps in given time unit
/** The difference is \a after - \a before. */
float Diff(TimeStamp before, TimeStamp after, TimeUnit unit = TimeUnit::SECONDS);
//! Returns the exact (in nanosecond units) difference between two timestamps
/** The difference is \a after - \a before. */
long long ExactDiff(TimeStamp before, TimeStamp after);
} // namespace TimeUtils
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