Hi all, I'm working on a project that needs to add various data/metadata to the nodes. I was wondering: 1. Does something already exists for this (more flexible than the description string list)? 2. How would you implement this?
Personnally, I was looking towards aggregation. See http://cowboyprogramming.com/2007/01/05/evolve-your-heirachy/ and other similar articles to know what I mean. So I suggest to add something to nodes, using a compile-time option (in order to be able to turn it on or off when running CMake). For instance, there would be: - A Component abstract class (a very simple one) - A list of components in nodes (directly in the Node class, or by making Node inherit from something like a ComponentContainer class). Something like the nodes list in osg::Group sounds good (as it will be familiar to OSG users). - And a ComponentManager class, which references the components (weak references) by type, so that you can easily and quickly iterate over all "Physics" components, "AI" components, or whatever-components. That way, you may add whaterver component you need to any node. Say you need to add a meta to a node? Create a MetaComponent (Name + value), and call node->addComponent(new MetaComponent("Creation date", "2009-08-13")); I already coded something, but it's not really clean right now. Depending on your answers and on the moment my code will be cleaned, I'll send code to osg-submissions. Thanks. Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
