On 12/8/2010 2:42 PM, Paul Martz wrote: > Hi all -- Does anyone know of a state tracking NodeVisitor, either in core > OSG or in an > external project? I'd expect it to merge StateSets onto the top of stack as > it visits > nodes, allowing an application to access a snapshot of current state by > querying the > top-of-stack. > (osg::State doesn't quite do what I want. It keeps StateSets on a stack, but > doesn't merge > them during traversal; top-of-stack is simply the last StateSet encountered, > rather than a > snapshot of state at that point in the scene graph. It doesn't give me access > to a single > StateSet that I can query.)
Not aware of one, but it wouldn't seem to be too hard to create. just create a second stack, for the merged state. Whenever you push onto the State stack, push a new copy of the prior existing state onto the MergedState stack, and then merge the current State in. Whenever you pop the State stack, pop the MergedState stack too. > Thanks for any info. > -Paul -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Digital Imaging. OpenGL. Scene Graphs. GIS. GPS. Training. Consulting. Contracting. "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
