Hi Paul, W.r.t UserData I'd suggest placing osgSim container for the extra OpenFlight flags, users can then do a dynamic cast of UserData and get the info they want. The osgSim::GeographicLocation class already serves this purpose.
W.r.t one or two plugins. Simplicity of high level management would suggest using a single plugin. A single plugin would also promote code reuse. But... if there isn't much code reuse it could make the two sets of code rather unwieldy. If we do continue with two plugins then one could get the .flt reader plugin to load the .flt write plugin on demand. Or extend osgDB::Registry so that one can have multiple plugins registered per format, but I feel this is quite a bit of extra complexity for a small amount of gain in terms of functionality - code complexity in osgDB::Registry itself does need to be taken into consideration, personally I already find it complex enough. Robert. On Tue, Mar 11, 2008 at 5:39 PM, Paul Martz <[EMAIL PROTECTED]> wrote: > > > Hi Robert -- I'm making good progress on the OpenFlight exporter plugin and > wanted to bounce a couple ideas off you. > > There is a customer requirement to be able to preserve the OpenFlight Object > record flags that indicate "don't display at night", "don't display at day", > etc. Currently, the importer ignores these flags and just creates an > osg::Group for an OpenFlight Object record. I'm thinking about saving these > flags as UserData on the osg::Group. > > This brings about the question: Will there be two separate OpenFlight > plugins, one for import and one for export? This is the way I had originally > envisioned it, but there is an issue with the osgDB not (fully) supporting > two plugins for one extension; the only way I've found to get it to work is > to explicitly load one of the plugins first. > > If the import and export are separate plugins, then this complicates sharing > data structures such as the proposed UserData to preserve FLT Object flags. > > If the two plugins should be combined, then I should probably get to work on > this now to save me work in the future. > > Thoughts? > > Paul Martz > Skew Matrix Software LLC > http://www.skew-matrix.com > 303 859 9466 > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
