void HeartBeat::timerEvent( QTimerEvent */*event*/ )
{
osg::ref_ptr< osgViewer::ViewerBase > viewer;
if( !_viewer.lock( viewer ) )
{
// viewer has been deleted -> stop timer
stopTimer();
return;
}
// limit the frame rate
if( viewer->getRunMaxFrameRate() > 0.0)
{
double dt = _lastFrameStartTime.time_s();
double minFrameTime = 1.0 / viewer->getRunMaxFrameRate();
if (dt < minFrameTime)
OpenThreads::Thread::microSleep(static_cast<unsigned int>(1000000.0*(minFrameTime-dt)));
}
else
{
// avoid excessive CPU loading when no frame is required in ON_DEMAND mode
if( viewer->getRunFrameScheme() == osgViewer::ViewerBase::ON_DEMAND )
{
double dt = _lastFrameStartTime.time_s();
if (dt < 0.01)
OpenThreads::Thread::microSleep(static_cast<unsigned int>(1000000.0*(0.01-dt)));
}
// record start frame time
_lastFrameStartTime.setStartTick();
// make frame
if( viewer->getRunFrameScheme() == osgViewer::ViewerBase::ON_DEMAND )
{
if( viewer->checkNeedToDoFrame() )
{
viewer->frame();
}
}
else
{
viewer->frame();
}
}
}
void apply(Environment& env, Ocean& ocean)
{
if (chop.isSet())
{
ocean.SetChoppiness(chop.get());
chop.clear();
}
if (seaState.isSet())
{
env.SimulateSeaState(seaState.get(), 0.0);
seaState.clear();
}
osg::ref_ptr<TritonLayer> layer;
if (alpha.isSet() && tritonLayer.lock(layer))
{
layer->setOpacity(alpha.value());
alpha.clear();
}
}
void onMapModelChanged( const MapModelChange& change )
{
osg::ref_ptr<TerrainEngineNode> safeNode;
if (_node.lock(safeNode))
safeNode->onMapModelChanged( change );
}
void onMapInfoEstablished( const MapInfo& mapInfo )
{
osg::ref_ptr<TerrainEngineNode> safeNode;
if (_node.lock(safeNode))
safeNode->onMapInfoEstablished( mapInfo );
}