I can probably post up the scenegraph, need to double check, but it will have to wait till tomorrow, I left the laptop it's on at home. As for multiple parents, I did check that and everything in the graph has only 1 parent. All I am using the optimizer for is to remove nested groups created for modelling purposes that aren't needed and to collapse the transforms, as they are not needed once modelling is finished as well. Since rebuilding OSG is pain in our current environment, I may just try copying the flatten code from the optimizer in to my own function and do some debugging to try and find out why they are not being collapsed.
-----Original Message----- From: osg-users [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Thursday, January 22, 2015 8:06 AM To: OpenSceneGraph Users Subject: Re: [osg-users] FLATTEN_STATIC_TRANSFORMS Not Always Working Hi Karl, There isn't any way for me to know whether you have hit upon a bug or just that the scene graph you are trying to optimize is structured in way that could can eliminate the transforms as I simply don't have a dataset that reproduces it. One of the things that prevent transforms being flattened and then removed is if a subgraph has two parents each with it's own unique transform. I would add that the Optimizer and all it's parts is a sticky plaster fix for bad scene graphs, it tries it's best to fix bad scene graphs but it can't always do everything that could be done. In an ideal world all scene graph would be built optimally in the modelling software and never need this fix up processing. Robert. On 22 January 2015 at 11:39, Cary, Karl A. <karl.a.c...@leidos.com> wrote: I was recently doing some updates to a converter we wrote and found that the FLATTEN_STATIC_TRANSFORMS option to the optimizer isn't always flattening the transforms and I do not understand why. I have verified that the MatrixTransforms are marked as STATIC. The only thing I can think of is that I have 2 transforms nested, i.e. 1 MatrixTransform has a MatrixTransform as it's child which in turn has multiple groups and geodes under it. I can flatten it eventually if I first do an optimization removing redundant nodes, and then do a second optimization to flatten the transforms. The problem is that then I have to do a 3rd optimization to remove redundant nodes again. This doesn't make any sense to me. I also tried throwing in the FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS, but this causes a crash. This is being run on the output of a maya2osg conversion from a maya file in to a .osg file. Any help in understanding what is wrong would be greatly appreciated. Thanks i n advance. Karl _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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