Hi Torben,
2010/2/12 Torben Dannhauer <[email protected]>:
> My idea was something like a pointer to a buffer and size information how
> long the content is.
> This way I could read my serialized objects and pass the data to the cluster
> engine.
Yes, you may use writeNode() and readNode() to work with streams. Just
find the correct ReaderWriter first:
osgDB::ReaderWriter* rw =
osgDB::Registry::instance()->getReaderWriterForExtension("osgb");
if ( rw )
{
osgDB::ReaderWriter::WriteResult wr = rw->writeNode( *scene, ostream );
...
osgDB::ReaderWriter::ReadResult rr = rw->readNode( istream );
}
> How can I retireve the serialized data? Is it binary or a "large" ascii
> string? (because source and target of the compressor are std::string)
By default it writes binary data to std::ostream. To receive an ascii
one, add "Ascii" as the option string.
> Additionally I have a question regarding compressors. In the wiki page is
> noted, that zLib compressor is available. I found it in the source code, but
> how can I apply the compressor to the stream to get a smaller stream?
> I'm not sure to use it, but its an interesting option with that compressor..
# ./osgconv cow.osg cow.osgb -O Compressor=zlib
# ./osgviewer cow.osgb
That is, to add "Compressor=zlib" to the option string.
You may also write user-defined compressors yourself.
Wang Rui
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