This submission adds shared array duplication (and moves the SharedArrayOptimizer declaration in MeshOptimizer to make it callable from the SmoothingVisitor)."
Submitted by Marc Helbling.
Edited by Robet Osfield to retain the usual OSG coding style.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14639 16af8721-9629-0410-8352-f15c8da7e697
* it sorts primitives to keep "more complex" primitives first; maybe you'll prefer to have this as an option (but usually it should make more sense to pre-transform triangles before e.g. lines)
* currently, the visitor rely on TriangleIndexFunctor and does not take care of points and lines (see https://github.com/openscenegraph/osg/blob/master/include/osg/TriangleIndexFunctor#L124-130). This can lead to issues e.g. if you store the wireframe lines along with some triangles: the triangles will be reindexed but not the line. I've therefore added osg/include/TriangleLinePointIndexFunctor to index triangles, lines and points and derived VertexReorder from this class.
* to avoid issues, shared arrays are duplicated. However, in some cases (e.g. an UV channel shared in the geometry only) this is not required. I'm adding a SharedArrayOptimizer to optimize this: it looks for duplicated UVs before the array duplication and deduplicate arrays after.
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git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14603 16af8721-9629-0410-8352-f15c8da7e697
