55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/*
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* This file is part of the Colobot: Gold Edition source code
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* Copyright (C) 2001-2023, Daniel Roux, EPSITEC SA & TerranovaTeam
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* http://epsitec.ch; http://colobot.info; http://github.com/colobot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://gnu.org/licenses
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*/
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#include "common/timeutils.h"
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#include <cassert>
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namespace TimeUtils
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{
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TimeStamp Lerp(TimeStamp a, TimeStamp b, float t)
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{
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return a + std::chrono::duration_cast<TimeStamp::duration>((b - a) * t);
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}
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float Diff(TimeStamp before, TimeStamp after, TimeUnit unit)
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{
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long long exact = ExactDiff(before, after);
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float result = 0.0f;
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if (unit == TimeUnit::SECONDS)
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result = exact * 1e-9;
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else if (unit == TimeUnit::MILLISECONDS)
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result = exact * 1e-6;
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else if (unit == TimeUnit::MICROSECONDS)
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result = exact * 1e-3;
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else
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assert(false);
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return result;
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}
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long long ExactDiff(TimeStamp before, TimeStamp after)
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{
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return std::chrono::duration_cast<std::chrono::nanoseconds>(after - before).count();
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}
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} // namespace TimeUtils
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