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
>
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
