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00002 #include <blort/Tracker/Timer.h>
00003
00004
00005
00006 using namespace Tracking;
00007
00008 Timer::Timer(void) {
00009 #ifdef WIN32
00010 QueryPerformanceFrequency((LARGE_INTEGER*) &m_Frequency);
00011 QueryPerformanceCounter((LARGE_INTEGER*)(&m_StartTicks));
00012 m_EndTicks = m_StartTicks;
00013 #else
00014 clock_gettime(CLOCK_REALTIME, &AppStart);
00015 clock_gettime(CLOCK_REALTIME, &old);
00016 #endif
00017 m_fAppTime = 0.0;
00018 }
00019
00020 Timer::~Timer(void) {
00021 }
00022
00023 void Timer::Reset() {
00024 #ifdef WIN32
00025 QueryPerformanceFrequency((LARGE_INTEGER*) &m_Frequency);
00026 QueryPerformanceCounter((LARGE_INTEGER*)(&m_StartTicks));
00027 m_EndTicks = m_StartTicks;
00028 #else
00029 clock_gettime(CLOCK_REALTIME, &AppStart);
00030 clock_gettime(CLOCK_REALTIME, &old);
00031 #endif
00032 m_fAppTime = 0.0;
00033 }
00034
00035 double Timer::Update() {
00036 #ifdef WIN32
00037 QueryPerformanceCounter((LARGE_INTEGER*)(&m_EndTicks));
00038 fNow = (double)(m_EndTicks - m_StartTicks) / m_Frequency;
00039 m_fTime = fNow - m_fAppTime;
00040 m_fAppTime = fNow;
00041 #else
00042 clock_gettime(CLOCK_REALTIME, &act);
00043 m_fTime = (act.tv_sec - old.tv_sec) + (act.tv_nsec - old.tv_nsec) / 1e9;
00044 old = act;
00045 m_fAppTime += m_fTime;
00046 #endif
00047 return m_fTime;
00048 }