Ah yes, that did the trick. Thank you very much!
Here's the code in case anybody else needs it:
osg::ref_ptr<osgMyLibrary::MyObject> test = new osgMyLibrary::MyObject;
std::ostringstream sstream;
osg::ref_ptr<osgDB::Options> options = new osgDB::Options("Ascii");
osgDB::ReaderWriter::WriteResult wr =
osgDB::Registry::instance()->getReaderWriterForExtension("osgt")->writeObject(*test,
sstream, options);
std::cout << sstream.str() << std::endl;
So am I understanding correctly that "osg" and "osgt" are actually
different formats (and custom serialization automatically works with
"osgt", but not "osg")?
Cheers,
Peter
On Mon, Mar 18, 2013 at 11:05 AM, Robert Osfield
<[email protected]>wrote:
> Hi Peter,
>
> Looking at the plugin implementation it'll be the fact that the same
> ReaderWriter is used for all of the .osgt, .osgb and .osgx formats, if
> you use a readObject()/writeObject() with a filename the plugin will
> automatically set the type of file, but if you use a
> std::istream/ostream then it'll look to the Option string to see what
> type to read. To select .osgt ascii add an "Ascii" entry into the
> osgDB::Option::OptionString.
>
> The code in src/osgPlugin/osg/ReaderWriterOSG2.cpp that does the
> automatically assignment from the extension to the OptionsString is in
> prepareReading and prepareWriting method and looks like:
>
> if ( ext=="osgt" ) local_opt->setOptionString(
> local_opt->getOptionString() + " Ascii" );
> else if ( ext=="osgx" ) local_opt->setOptionString(
> local_opt->getOptionString() + " XML" );
>
> So adding this in yourself will be the thing to do.
>
> Robert.
>
> On 17 March 2013 22:58, peter klosowski <[email protected]> wrote:
> > Oddly enough, "osgt" also gives me the binary format, even when
> serializing
> > objects from the core library, e.g.:
> >
> > osg::ref_ptr<osg::Node> test = new osg::Node;
> > std::ostringstream sstream;
> > osgDB::ReaderWriter::WriteResult wr =
> >
> osgDB::Registry::instance()->getReaderWriterForExtension("osgt")->writeObject(*test,
> > sstream, 0);
> > std::cout << sstream.str() << std::endl;
> >
> > Results in output:
> >
> > í♫ælEE¹→♥ _ ☺ 0 osg::Node☺ ☻ ☺
> >
> > However, e.g.:
> >
> > osg::ref_ptr<osg::Node> test = new osg::Node;
> > std::ostringstream sstream;
> > osgDB::ReaderWriter::WriteResult wr =
> >
> osgDB::Registry::instance()->getReaderWriterForExtension("osg")->writeObject(*test,
> > sstream, 0);
> > std::cout << sstream.str() << std::endl;
> >
> > Results in output:
> >
> > Node {
> > nodeMask 0xffffffff
> > cullingActive TRUE
> > }
> >
> > Which is what I want, but for my custom object. With that, I get
> equivalent
> > results in the first case and nothing in the second.
> >
> > (I am using OpenSceneGraph 3.1.4, if that matters.)
> >
> > Cheers,
> > Peter
> >
> > On Sun, Mar 17, 2013 at 11:12 PM, Robert Osfield <
> [email protected]>
> > wrote:
> >>
> >> Try using the .osgt extension rather than .osg.
> >>
> >> On 17 Mar 2013 20:45, "peter klosowski" <[email protected]> wrote:
> >>>
> >>> Hi,
> >>>
> >>> I have created a new class derived from osg::Object. I would like to
> add
> >>> the ability to serialize the class to the human readable "osg" format.
> >>> Currently, serialization only works for "osgb".
> >>>
> >>> Here is a simplified version of my code:
> >>>
> >>> // In "MyObject", I have:
> >>>
> >>> namespace osgMyLibrary {
> >>>
> >>> class MyObject: public osg::Object
> >>> {
> >>> public:
> >>> MyObject(): _symbol("") {}
> >>> MyObject(MyObject const& other, osg::CopyOp const& =
> >>> osg::CopyOp::SHALLOW_COPY): _symbol(other._symbol) {}
> >>>
> >>> std::string const& getSymbol() const { return _symbol; }
> >>> void setSymbol(std::string const& symbol) { _symbol = symbol; }
> >>>
> >>> META_Object(osgMyLibrary, MyObject);
> >>>
> >>> protected:
> >>> // Use reference counting.
> >>> virtual ~MyObject();
> >>>
> >>> private:
> >>> std::string _symbol;
> >>> };
> >>>
> >>> }
> >>>
> >>> // In "MyObject.cpp", I have:
> >>>
> >>> REGISTER_OBJECT_WRAPPER(MyObject, new osgMyLibrary::MyObject,
> >>> osgMyLibrary::MyObject, "osg::Object osgMyLibrary::MyObject")
> >>> {
> >>> ADD_STRING_SERIALIZER(Symbol, "#1");
> >>> }
> >>>
> >>> // In "main.cpp", I have:
> >>>
> >>> osg::ref_ptr<osgMyLibrary::MyObject> test = new
> osgMyLibrary::MyObject();
> >>> std::ostringstream sstream;
> >>> osgDB::ReaderWriter::WriteResult wr =
> >>>
> osgDB::Registry::instance()->getReaderWriterForExtension("osg")->writeObject(*test,
> >>> sstream, 0);
> >>> std::cout << sstream.str() << std::endl;
> >>>
> >>> However, nothing is written to the console. If I change the extension
> to
> >>> "osgb", I can see the object, but it is obviously using the binary
> format.
> >>> What do I need to change in order to get human readable serialization?
> >>>
> >>> Cheers,
> >>> Peter
> >>>
> >>> _______________________________________________
> >>> osg-users mailing list
> >>> [email protected]
> >>>
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >>>
> >>
> >> _______________________________________________
> >> osg-users mailing list
> >> [email protected]
> >>
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >>
> >
> >
> > _______________________________________________
> > osg-users mailing list
> > [email protected]
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> _______________________________________________
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