HI Lionel, On 13 May 2014 16:56, Lionel Lagarde <[email protected]> wrote: > Wonderful. Our code is full of: > if the object is a drawable then > do something for the drawable > else > do something for the node
This is one of the benefits. The existence of Geode and Drawable not being a Node is actually a hang up of the very early days of the OSG. Attempting to promote Drawable to Node and sucumvent the need for using Geode is something I've been pondering for a very long time as it simplifies usage of the scene graph in a number of cases, but always known that some bits of the changes might be painful. I think I've solved most of the painful bits already but I'm stuck trying to find a way to keep end user code compiling when they use const BoundingBox& bb = drawable->getBound(). > For the getBound problem, I think there is no solution. The return type > is not included in the function prototype. The straight forward interpretation of C++ suggests this, and that the only way to differentiate will be to have a different method name as I have done the work I have done so far. However, I know that C++ is quite a rich language and there are sometimes "clever" ways to solve certain problems, so I'm not giving up right away. I'm currently wondering if a helper Bound class might be able to help, with it providing automatic type conversion to BoundingSphere or BoundingBox, the Node::getBound() would then return a Bound object, that gets automatically cast to the type the user is using. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
