Hi John, On Mon, Dec 14, 2009 at 10:21 PM, Jan Pečiva <[email protected]> wrote: >> OSG plugin takes one look at the "foo" extension and returns an error. >> (This is correct behavior; the .osg plugin doesn't support the "foo" >> extension.) > > This is exactly the point I am trying to point out! The plugin reports that > it does not support the extension! > > I am telling that this is NOT a good idea. And finally, the discussion about > "design" ideas can start.
For your it's NOT a good idea. So please couch it without the capitals and within the context of your opinion, and please don't "telling" us, we aren't children. The alias scheme in osgDB has been a good idea for the majority for over a decade. Rejecting extensions that aren't supported by the plugin is a good idea - it leaves the plugin with a complete responsibility for what it can handle. What you are asking is not what osgDB alias does at present, nor what the plugins do. The aliases at present are based around the idea that plugins with a different name can handle extensions that are named different from the plugin. This allows a tif plugin to handle tiff files, or the quicktime to handle .mov, .mpg etc. etc. The osgDB alias is not a scheme for co-opting an existing plugin to handle a file extensions that isn't a recognized one. One might propose an additional scheme for doing this, and we might debate the merits of this, personally I'm rather dubious that it's that a great thing to do, and given we've gone a decade without needing this I would suggest that it's not at all a common requirement. I don't know if you are aware but one way of tackling what you are trying might simply have your own plugin as your were originally talking about and have it open the file you want with whatever extensions you have as an istream and then load the plugin you want to do the actual loaded and pass this to it. Given what you after is such a niche requirement then I would think this is a sensible route to take rather than expect intrusive changes to the OSG to achieve what you specifically want. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
