C++ (Cpp) Viewer::getStartTick示例

/// Utility function you call before something you want to time, so that the 
/// recorded times will all be consistent using the viewer's time.
void startTiming(osgViewer::Viewer& viewer, const std::string& name)
{
    osg::Timer_t tick = osg::Timer::instance()->tick();
    double currentTime = osg::Timer::instance()->delta_s(viewer.getStartTick(), tick);
    int framenumber = viewer.getFrameStamp()->getFrameNumber();

    viewer.getViewerStats()->setAttribute(framenumber, name + " begin", currentTime);
}

示例#2

显示文件

文件： osguserstats.cpp 项目： crimzon/osg

/// Utility function you call after something you want to time, so that the 
/// recorded times will all be consistent using the viewer's time.
void endTiming(osgViewer::Viewer& viewer, const std::string& name)
{
    osg::Timer_t tick = osg::Timer::instance()->tick();
    double currentTime = osg::Timer::instance()->delta_s(viewer.getStartTick(), tick);
    int framenumber = viewer.getFrameStamp()->getFrameNumber();

    viewer.getViewerStats()->setAttribute(framenumber, name + " end", currentTime);

    double begin = 0.0;
    double elapsed = 0.0;
    if (viewer.getViewerStats()->getAttribute(framenumber, name + " begin", begin))
    {
        elapsed = currentTime - begin;
    }

    viewer.getViewerStats()->setAttribute(framenumber, name + " time taken", elapsed);
}