Hi John and Colin, I'm also looking to get C# and OSG working well together. I've been seriously considering creating managed OSG wrappers on my own, so I'd definitely be interested in working with anyone else wanting to do the same.
Recently I've actually developed a C# app that uses OSG via a hand-coded C++/CLI assembly. In the process I hit so many pain points that I became convinced that an auto-generated wrapper at the OSG level is the only reasonable way to provide a managed interface to OSG functionality. The worst of the problems were: - duplication of complex types due to the fact that managed and unmanaged data does not integrate at any level higher than POD types - the added complexity of managing object lifetimes in the presence of garbage collection - ensuring thread safety if any work is done in finalizers, since the garbage collector runs on an arbitrary thread - the second-class state of C++/CLI and native development tools when working within a managed application In terms of wrappers, I think the two main options are auto-generating C++/CLI bindings using osgIntrospection and using SWIG to create C# bindings. IMHO the former is really the way to go. It's more work up-front, but it's likely to be a lot more flexible and higher performing in the long run. -Mike -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Monday, November 13, 2006 9:08 AM To: osg users Subject: RE: [osg-users] OSG and C# Hi Colin, I'm glad I'm not the only one contemplating this. The biggest problem with wrapping OSG with C++/CLI as far as I can see is reference-counted objects. I'm not sure I could justify to my boss spending lots of time writing a C# wrapper on my own, but if there are a few people willing to invest time, I'd be happy to be part of the team. For speed of development, I've considered writing a high-level, unmanaged viewer DLL that just gets passed the DC of my C# render surface,and any input events, and then use osgLua or similar to handle the scenegraph. John Donovan Sony Computer Entertainment Europe http://www.scee.com [EMAIL PROTECTED] wrote on 13/11/2006 14:31:10: > > We're also about to try an integrate C# with OSG so would be interested > in any experiences as well. I would imagine the main issue is the > relationship between managed and unmanaged code (that's been discussed > on other threads. Also, my understanding is that you need to go via a > C++/.Net managed intermediate layer. > ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify [EMAIL PROTECTED] This footnote also confirms that this email message has been checked for all known viruses. ********************************************************************** Sony Computer Entertainment Europe _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
