ReadResult readNode(const std::string& fileName, const osgDB::ReaderWriter::Options* options) const
{
std::string ext( osgDB::getLowerCaseFileExtension(fileName) );
if( !acceptsExtension(ext) )
return ReadResult::FILE_NOT_HANDLED;
osg::notify(osg::INFO) << "ReaderWriterOSGVIEWER( \"" << fileName << "\" )" << std::endl;
// strip the pseudo-loader extension, which must leave a sub-filename.
std::string subFileName( osgDB::getNameLessExtension( fileName ) );
if( subFileName == fileName )
{
osg::notify(osg::WARN) << "Missing subfilename for " EXTENSION_NAME " pseudo-loader" << std::endl;
return ReadResult::FILE_NOT_HANDLED;
}
// recursively load the subfile.
// first try to load as osg::Node
osg::Node* node( osgDB::readNodeFile( subFileName, options ) );
if( node )
{
return node;
}
// else try to load as osg::Image, which will be applied to a quad.
osg::Image* image( readImageFile(subFileName.c_str(), options) );
if( image )
{
return osg::createGeodeForImage(image);
}
// propagate the read failure upwards
osg::notify(osg::WARN) << "Subfile \"" << subFileName << "\" could not be loaded" << std::endl;
return ReadResult::FILE_NOT_HANDLED;
}
osg::ref_ptr<osg::Node> p3d::readShowFiles(osg::ArgumentParser& arguments,const osgDB::ReaderWriter::Options* options)
{
osg::ref_ptr<osgDB::Options> local_options = createOptions(options);
local_options->setOptionString("main");
typedef std::vector< osg::ref_ptr<osg::Node> > NodeList;
NodeList nodeList;
std::string filename;
while (arguments.read("--image",filename))
{
osg::ref_ptr<osg::Image> image = readImageFile(filename.c_str(), local_options.get());
if (image.valid()) nodeList.push_back(osg::createGeodeForImage(image.get()));
}
while (arguments.read("--movie",filename))
{
osg::ref_ptr<osg::Image> image = readImageFile(filename.c_str(), local_options.get());
osg::ref_ptr<osg::ImageStream> imageStream = dynamic_cast<osg::ImageStream*>(image.get());
if (image.valid())
{
imageStream->play();
nodeList.push_back(osg::createGeodeForImage(imageStream.get()));
}
}
while (arguments.read("--dem",filename))
{
osg::HeightField* hf = readHeightFieldFile(filename.c_str(), local_options.get());
if (hf)
{
osg::Geode* geode = new osg::Geode;
geode->addDrawable(new osg::ShapeDrawable(hf));
nodeList.push_back(geode);
}
}
// note currently doesn't delete the loaded file entries from the command line yet...
for(int pos=1;pos<arguments.argc();++pos)
{
if (!arguments.isOption(pos))
{
// not an option so assume string is a filename.
osg::Node *node = osgDB::readNodeFile( arguments[pos], local_options.get());
if(node)
{
if (node->getName().empty()) node->setName( arguments[pos] );
nodeList.push_back(node);
}
}
}
if (nodeList.empty())
{
return NULL;
}
osg::ref_ptr<osg::Node> root;
if (nodeList.size()==1)
{
root = nodeList.front().get();
}
else // size >1
{
osg::Switch* sw = new osg::Switch;
for(NodeList::iterator itr=nodeList.begin();
itr!=nodeList.end();
++itr)
{
sw->addChild((*itr).get());
}
sw->setSingleChildOn(0);
sw->setEventCallback(new p3d::ShowEventHandler());
root = sw;
}
if (root.valid())
{
osg::notify(osg::INFO)<<"Got node now adding callback"<<std::endl;
AddVolumeEditingCallbackVisitor avecv;
root->accept(avecv);
}
return root;
}
