Hello OSG users,
I extract geometries from the scene graph and perform some line intersections
directly on them. If there are some transformations above in the tree then the
intersections will not take them into account. I'd like to use
osgUtil::Optimizer::FLATTEN_STATIC_TRANSFORMS so that the geometries are
flattened and the intersections work on the transformed/flattened geometries.
So I do:
// Create a node visitor to set all transforms to static in scene.
// Optimize
osgUtil::Optimizer optimzer;
optimzer.optimize(pScene.get(), osgUtil::Optimizer::FLATTEN_STATIC_TRANSFORMS |
osgUtil::Optimizer::MERGE_GEOMETRY |
osgUtil::Optimizer::CHECK_GEOMETRY |
osgUtil::Optimizer::MAKE_FAST_GEOMETRY);
// Gather geometries.
// Do intersections.
When I do this the geometries look transformed/flattened but the line
intersections do not. However, if I write / read the scene to disk before I
gather geometries then the intersections are good (transformation/flattened):
// Optimize
// ...
osgDB::writeNodeFile(*pScene.get(), "tmp.osg");
pScene = osgDB::readNodeFile("tmp.osg");
// ...
I'd rather not do that ! What am I missing here ??!
cheers,
bill
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