/* * This file is part of the Colobot: Gold Edition source code * Copyright (C) 2001-2021, 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 namespace TimeUtils { enum class TimeUnit { SECONDS, MILLISECONDS, MICROSECONDS }; using TimeStamp = std::chrono::time_point; //! 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