int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates use node masks to create stereo images.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] image_file_left_eye image_file_right_eye");
arguments.getApplicationUsage()->addCommandLineOption("-d <float>","Time delay in seconds between the display of successive image pairs when in auto advance mode.");
arguments.getApplicationUsage()->addCommandLineOption("-a","Enter auto advance of image pairs on start up.");
arguments.getApplicationUsage()->addCommandLineOption("-x <float>","Horizontal offset of left and right images.");
arguments.getApplicationUsage()->addCommandLineOption("-y <float>","Vertical offset of left and right images.");
arguments.getApplicationUsage()->addCommandLineOption("--disk","Keep images on disk");
arguments.getApplicationUsage()->addCommandLineOption("-files <filename>","Load filenames from a file");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
arguments.getApplicationUsage()->addCommandLineOption("--SingleThreaded","Select SingleThreaded threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--CullDrawThreadPerContext","Select CullDrawThreadPerContext threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--DrawThreadPerContext","Select DrawThreadPerContext threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--CullThreadPerCameraDrawThreadPerContext","Select CullThreadPerCameraDrawThreadPerContext threading model for viewer.");
// construct the viewer.
osgViewer::Viewer viewer(arguments);
// register the handler to add keyboard and mouse handling.
SlideEventHandler* seh = new SlideEventHandler();
viewer.addEventHandler(seh);
// read any time delay argument.
float timeDelayBetweenSlides = 5.0f;
while (arguments.read("-d",timeDelayBetweenSlides)) {}
bool autoSteppingActive = false;
while (arguments.read("-a")) autoSteppingActive = true;
float offsetX=0.0f;
while (arguments.read("-x",offsetX)) {}
float offsetY=0.0f;
while (arguments.read("-y",offsetY)) {}
bool onDisk=false;
while (arguments.read("--disk")) {
onDisk=true;
}
std::string filename="";
FileList fileList;
// extract the filenames from the a file, one filename per line.
while (arguments.read("-files",filename)) {
osgDB::ifstream is(filename.c_str());
if (is) {
std::string line;
while (std::getline(is,line,'\n')) fileList.push_back(line);
is.close();
}
}
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
osgViewer::Viewer::ThreadingModel threading = osgViewer::Viewer::SingleThreaded;
while (arguments.read("--SingleThreaded")) threading = osgViewer::Viewer::SingleThreaded;
while (arguments.read("--CullDrawThreadPerContext")) threading = osgViewer::Viewer::CullDrawThreadPerContext;
while (arguments.read("--DrawThreadPerContext")) threading = osgViewer::Viewer::DrawThreadPerContext;
while (arguments.read("--CullThreadPerCameraDrawThreadPerContext")) threading = osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext;
viewer.setThreadingModel(threading);
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
// report any errors if they have occurred when parsing the program arguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
// extract the filenames from the arguments list.
for(int pos=1; pos<arguments.argc(); ++pos)
{
if (arguments.isString(pos)) fileList.push_back(arguments[pos]);
}
if (fileList.empty())
{
fileList.push_back("Images/dog_left_eye.jpg");
fileList.push_back("Images/dog_right_eye.jpg");
}
else if (fileList.size()<2)
{
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
return 1;
}
// now the windows have been realized we switch off the cursor to prevent it
// distracting the people seeing the stereo images.
double fovy, aspectRatio, zNear, zFar;
viewer.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
float radius = 1.0f;
float height = 2*radius*tan(osg::DegreesToRadians(fovy)*0.5f);
float length = osg::PI*radius; // half a cylinder.
// use a texture matrix to control the placement of the image.
osg::TexMat* texmatLeft = new osg::TexMat;
osg::TexMat* texmatRight = new osg::TexMat;
// creat the scene from the file list.
osg::ref_ptr<osg::Switch> rootNode;
if (!onDisk) rootNode = createScene(fileList,texmatLeft,texmatRight,radius,height,length);
else rootNode=new osg::Switch();
//osgDB::writeNodeFile(*rootNode,"test.osg");
viewer.getCamera()->setCullMask(0xffffffff);
viewer.getCamera()->setCullMaskLeft(0x00000001);
viewer.getCamera()->setCullMaskRight(0x00000002);
// set up the use of stereo by default.
osg::DisplaySettings::instance()->setStereo(true);
if (osg::DisplaySettings::instance()->getStereoMode()==osg::DisplaySettings::ANAGLYPHIC)
{
rootNode->setStateSet(createColorToGreyscaleStateSet());
}
// set the scene to render
viewer.setSceneData(rootNode.get());
// create the windows and run the threads.
viewer.realize();
// switch off the cursor
osgViewer::Viewer::Windows windows;
viewer.getWindows(windows);
for(osgViewer::Viewer::Windows::iterator itr = windows.begin();
itr != windows.end();
++itr)
{
(*itr)->useCursor(false);
}
viewer.setFusionDistance(osgUtil::SceneView::USE_FUSION_DISTANCE_VALUE,radius);
// set up the SlideEventHandler.
if (onDisk) seh->set(fileList,rootNode.get(),offsetX,offsetY,texmatLeft,texmatRight,radius,height,length,timeDelayBetweenSlides,autoSteppingActive);
else seh->set(rootNode.get(),offsetX,offsetY,texmatLeft,texmatRight,timeDelayBetweenSlides,autoSteppingActive);
osg::Matrix homePosition;
homePosition.makeLookAt(osg::Vec3(0.0f,0.0f,0.0f),osg::Vec3(0.0f,1.0f,0.0f),osg::Vec3(0.0f,0.0f,1.0f));
while( !viewer.done() )
{
viewer.getCamera()->setViewMatrix(homePosition);
// fire off the cull and draw traversals of the scene.
viewer.frame();
}
return 0;
}
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates use node masks to create stereo images.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] image_file [image_file]");
arguments.getApplicationUsage()->addCommandLineOption("-d <float>","Time delay in seconds between the display of successive image pairs when in auto advance mode.");
arguments.getApplicationUsage()->addCommandLineOption("-a","Enter auto advance of image pairs on start up.");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
arguments.getApplicationUsage()->addCommandLineOption("--create <filename>","Create an photo archive of specified files");
// construct the viewer.
osgViewer::Viewer viewer(arguments);
viewer.setThreadingModel(osgViewer::Viewer::SingleThreaded);
// register the handler to add keyboard and mouse handling.
SlideEventHandler* seh = new SlideEventHandler();
viewer.addEventHandler(seh);
// read any time delay argument.
float timeDelayBetweenSlides = 5.0f;
while (arguments.read("-d",timeDelayBetweenSlides)) {}
bool autoSteppingActive = false;
while (arguments.read("-a")) autoSteppingActive = true;
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
std::string archiveName;
while (arguments.read("--create",archiveName)) {}
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
// report any errors if they have occurred when parsing the program arguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
if (arguments.argc()<=1)
{
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
return 1;
}
if (!archiveName.empty())
{
// archive name set to create
PhotoArchive::FileNameList fileNameList;
for(int i=1;i<arguments.argc();++i)
{
if (arguments.isString(i)) fileNameList.push_back(std::string(arguments[i]));
}
PhotoArchive::buildArchive(archiveName,fileNameList);
return 0;
}
// now the windows have been realized we switch off the cursor to prevent it
// distracting the people seeing the stereo images.
double fovy, aspectRatio, zNear, zFar;
viewer.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
fovy = osg::DegreesToRadians(fovy);
double fovx = atan(tan(fovy*0.5)*aspectRatio)*2.0;
float radius = 1.0f;
float width = 2*radius*tan(fovx*0.5f);
float height = 2*radius*tan(fovy*0.5f);
osg::ref_ptr<Album> album = new Album(arguments,width,height);
// creat the scene from the file list.
osg::ref_ptr<osg::Group> rootNode = album->getScene();
if (!rootNode) return 0;
//osgDB::writeNodeFile(*rootNode,"test.osg");
// set the scene to render
viewer.setSceneData(album->getScene());
// set up the SlideEventHandler.
seh->set(album.get(),timeDelayBetweenSlides,autoSteppingActive);
viewer.realize();
// switch off the cursor
osgViewer::Viewer::Windows windows;
viewer.getWindows(windows);
for(osgViewer::Viewer::Windows::iterator itr = windows.begin();
itr != windows.end();
++itr)
{
(*itr)->useCursor(false);
}
return viewer.run();
}