A while back, I posted a submission that tried to programmatically determine which formats were supported, did they support read or write, and did they support the "read/writeNode", "read/writeImage", "read/writeObject", or "read/writeHeightfield" interface.
To query for reading, the code created an empty file in a temp directory with the appropriate extension, then tried to read that file with OSG. It depended on the plugin returning the correct error code: FILE_LOADED or ERROR_READING_FILE (because it was, after all, an empty file) meant it was supported, anything else indicated a lack of support. And it tried to do something similar with writing. Unfortunately, this algorithm didn't work because many plugins contain bugs than cause them to return the incorrect error code. This caused my algorithm to return incorrect results a large percentage of the time. As a result, the submission was rejected. Ultimately, though, Robert did see value in having a way to determine some level of file support, and he coded up the "osgconv --formats" support. While this lists supported formats, unfortunately it provides no information about whether read or write is supported, or which interface is supported. On the plus side, the current implementation has a mechanism to display information about supported plugin Options; on the minus side, the output is somewhat incomplete, and we're still waiting for members of the community to flesh this out. In summary, the best mechanism available today to determine supported formats is to look at the code. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com +1 303 859 9466 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Morné Pistorius Sent: Thursday, January 08, 2009 3:11 AM To: OpenSceneGraph Users Subject: [osg-users] Exportable file formats Hi guys, I am trying to figure out which of the osg plugins support writing/exporting. Is there a list of supported formats or a way to query osg to find out which plugins support exporting? I will be happy if I can just get a handful - from comments read on the list, I think these are all supported: osg ive obj flt collada (dae) Thanks, Morne _______________________________________________ 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
