From 446ce137c6823ba9eff273bdafdaf266287c7c98 Mon Sep 17 00:00:00 2001 From: Bryan Galdrikian Date: Tue, 21 Feb 2017 12:07:59 -0800 Subject: first commit --- .../BlastPlugin/SampleBase/utils/SampleTime.h | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 NvBlast/tools/ArtistTools/source/BlastPlugin/SampleBase/utils/SampleTime.h (limited to 'NvBlast/tools/ArtistTools/source/BlastPlugin/SampleBase/utils/SampleTime.h') diff --git a/NvBlast/tools/ArtistTools/source/BlastPlugin/SampleBase/utils/SampleTime.h b/NvBlast/tools/ArtistTools/source/BlastPlugin/SampleBase/utils/SampleTime.h new file mode 100644 index 0000000..c62ced2 --- /dev/null +++ b/NvBlast/tools/ArtistTools/source/BlastPlugin/SampleBase/utils/SampleTime.h @@ -0,0 +1,58 @@ +/* +* Copyright (c) 2008-2015, NVIDIA CORPORATION. All rights reserved. +* +* NVIDIA CORPORATION and its licensors retain all intellectual property +* and proprietary rights in and to this software, related documentation +* and any modifications thereto. Any use, reproduction, disclosure or +* distribution of this software and related documentation without an express +* license agreement from NVIDIA CORPORATION is strictly prohibited. +*/ + +#ifndef SAMPLE_TIME_H +#define SAMPLE_TIME_H + +#include + +class Time +{ +public: + Time() : m_lastTickCount(getTimeTicks()) {} + + double Time::getElapsedSeconds() + { + const int64_t lastTickCount = m_lastTickCount; + m_lastTickCount = getTimeTicks(); + return (m_lastTickCount - lastTickCount) * s_secondsPerTick; + } + + double Time::peekElapsedSeconds() const + { + return (getTimeTicks() - m_lastTickCount) * s_secondsPerTick; + } + + double Time::getLastTime() const + { + return m_lastTickCount * s_secondsPerTick; + } + +private: + static double getTickDuration() + { + LARGE_INTEGER a; + QueryPerformanceFrequency(&a); + return 1.0 / (double)a.QuadPart; + } + + int64_t getTimeTicks() const + { + LARGE_INTEGER a; + QueryPerformanceCounter(&a); + return a.QuadPart; + } + + int64_t m_lastTickCount; + static const double s_secondsPerTick; +}; + + +#endif \ No newline at end of file -- cgit v1.2.3