void VideoViewer::videoFrameCallback(const Video::FrameBuffer* frameBuffer)
{
double timeStamp=saveVideoTimer.peekTime();
/* Start a new value in the input triple buffer: */
Images::RGBImage& image=videoFrames.startNewValue();
/* Extract an RGB image from the provided frame buffer into the new value: */
videoExtractor->extractRGB(frameBuffer,image.modifyPixels());
/* Finish the new value in the triple buffer and wake up the main loop: */
videoFrames.postNewValue();
Vrui::requestUpdate();
if(saveVideoFrames)
{
/* Create a filename for the new video frame: */
char videoFrameFileName[1024];
snprintf(videoFrameFileName,sizeof(videoFrameFileName),saveVideoFrameNameTemplate.c_str(),saveVideoNextFrameIndex);
/* Save the new video frame: */
Images::writeImageFile(image,videoFrameFileName);
std::cout<<"Saving frame "<<videoFrameFileName<<" at "<<timeStamp*1000.0<<" ms"<<std::endl;
/* Increment the frame counter: */
++saveVideoNextFrameIndex;
}
}
int main(int argc,char* argv[])
{
/* Parse the command line: */
SharedJelloServer::Index numAtoms(4,4,8);
SharedJelloServer::Box domain(SharedJelloServer::Box::Point(-60.0,-36.0,0.0),SharedJelloServer::Box::Point(60.0,60.0,96.0));
int listenPortID=-1; // Assign any free port
double updateTime=0.02; // Aim for 50 updates/sec
for(int i=1;i<argc;++i)
{
if(argv[i][0]=='-')
{
if(strcasecmp(argv[i]+1,"numAtoms")==0)
{
/* Read the number of atoms: */
++i;
for(int j=0;j<3&&i<argc;++j,++i)
numAtoms[j]=atoi(argv[i]);
}
else if(strcasecmp(argv[i]+1,"domain")==0)
{
/* Read the simulation domain: */
++i;
for(int j=0;j<3&&i<argc;++j,++i)
domain.min[j]=SharedJelloServer::Box::Scalar(atof(argv[i]));
for(int j=0;j<3&&i<argc;++j,++i)
domain.max[j]=SharedJelloServer::Box::Scalar(atof(argv[i]));
}
else if(strcasecmp(argv[i]+1,"port")==0)
{
/* Read the server listening port: */
++i;
if(i<argc)
listenPortID=atoi(argv[i]);
}
else if(strcasecmp(argv[i]+1,"tick")==0)
{
/* Read the server update time interval: */
++i;
if(i<argc)
updateTime=atof(argv[i]);
}
}
}
/* Ignore SIGPIPE and leave handling of pipe errors to TCP sockets: */
struct sigaction sigPipeAction;
sigPipeAction.sa_handler=SIG_IGN;
sigemptyset(&sigPipeAction.sa_mask);
sigPipeAction.sa_flags=0x0;
sigaction(SIGPIPE,&sigPipeAction,0);
/* Create a shared Jell-O server: */
SharedJelloServer sjs(numAtoms,domain,listenPortID);
std::cout<<"SharedJelloServer::main: Created Jell-O server listening on port "<<sjs.getListenPortID()<<std::endl<<std::flush;
/* Run the simulation loop full speed: */
Misc::Timer timer;
double lastFrameTime=timer.peekTime();
double nextUpdateTime=timer.peekTime()+updateTime;
int numFrames=0;
while(true)
{
/* Calculate the current time step duration: */
double newFrameTime=timer.peekTime();
double timeStep=newFrameTime-lastFrameTime;
lastFrameTime=newFrameTime;
/* Perform a simulation step: */
sjs.simulate(timeStep);
++numFrames;
/* Check if it's time for a state update: */
if(lastFrameTime>=nextUpdateTime)
{
/* Send a state update to all connected clients: */
sjs.sendServerUpdate();
// std::cout<<"\rFrame rate: "<<double(numFrames)/updateTime<<" fps"<<std::flush;
nextUpdateTime+=updateTime;
numFrames=0;
}
}
return 0;
}
void* ClusterJello::simulationThreadMethodMaster(void)
{
/* Enable immediate cancellation of this thread: */
Threads::Thread::setCancelState(Threads::Thread::CANCEL_ENABLE);
Threads::Thread::setCancelType(Threads::Thread::CANCEL_ASYNCHRONOUS);
/* Simulate the crystal state until interrupted: */
Misc::Timer timer;
double lastFrameTime=timer.peekTime();
double nextUpdateTime=timer.peekTime()+updateTime;
while(true)
{
/* Calculate the current time step duration: */
double newFrameTime=timer.peekTime();
double timeStep=newFrameTime-lastFrameTime;
lastFrameTime=newFrameTime;
/* Check if the simulation parameters have been changed: */
if(simulationParameters.hasNewValue())
{
/* Update the Jell-O crystal's simulation parameters: */
const SimulationParameters& sp=simulationParameters.lockNewValue();
crystal->setAtomMass(sp.atomMass);
crystal->setAttenuation(sp.attenuation);
crystal->setGravity(sp.gravity);
}
/* Check if the application has delivered new dragger states: */
if(draggerStates.hasNewValue())
{
/* Process the new dragger states: */
const DraggerStates& ds=draggerStates.lockNewValue();
for(int draggerIndex=0;draggerIndex<ds.numDraggers;++draggerIndex)
{
if(ds.draggerActives[draggerIndex])
{
/* Check if this dragger has just become active: */
if(!atomLocks.isEntry(ds.draggerIDs[draggerIndex]))
{
/* Find the atom picked by the dragger: */
AtomLock al;
if(ds.draggerRayBaseds[draggerIndex])
al.draggedAtom=crystal->pickAtom(ds.draggerRays[draggerIndex]);
else
al.draggedAtom=crystal->pickAtom(ds.draggerTransformations[draggerIndex].getOrigin());
/* Try locking the atom: */
if(crystal->lockAtom(al.draggedAtom))
{
/* Calculate the dragging transformation: */
al.dragTransformation=ds.draggerTransformations[draggerIndex];
al.dragTransformation.doInvert();
al.dragTransformation*=crystal->getAtomState(al.draggedAtom);
/* Store the atom lock in the hash table: */
atomLocks.setEntry(AtomLockHasher::Entry(ds.draggerIDs[draggerIndex],al));
}
}
/* Check if the dragger has an atom lock: */
AtomLockHasher::Iterator alIt=atomLocks.findEntry(ds.draggerIDs[draggerIndex]);
if(!alIt.isFinished())
{
/* Set the position/orientation of the locked atom: */
ONTransform transform=ds.draggerTransformations[draggerIndex];
transform*=alIt->getDest().dragTransformation;
crystal->setAtomState(alIt->getDest().draggedAtom,transform);
}
}
else
{
/* Check if this dragger has just become inactive: */
AtomLockHasher::Iterator alIt=atomLocks.findEntry(ds.draggerIDs[draggerIndex]);
if(!alIt.isFinished())
{
/* Release the atom lock: */
crystal->unlockAtom(alIt->getDest().draggedAtom);
atomLocks.removeEntry(alIt);
}
}
}
}
/* Advance the simulation time by the last frame time: */
crystal->simulate(timeStep);
/* Update the application's Jell-O state if the update interval is over: */
if(lastFrameTime>=nextUpdateTime)
{
if(clusterPipe!=0)
{
/* Broadcast the crystal state to all slave nodes: */
crystal->writeAtomStates(*clusterPipe);
clusterPipe->finishMessage();
}
/* Update the application's proxy crystal state: */
JelloCrystal& pc=proxyCrystal.startWrite();
pc.copyAtomStates(*crystal);
proxyCrystal.finishWrite();
Vrui::requestUpdate();
/* Start the next update interval: */
nextUpdateTime+=updateTime;
}
}
return 0;
}
