[osg-users] bounding box of culled geometry

[OpenSceneGraph Users]

Hi Renzo,

On Thu, 15 Oct 2020 at 09:05, OpenSceneGraph Users <
osg-users at lists.openscenegraph.org> wrote:

> thanks for pointing out how cull traversal operates.
>
> Yes, it might be I am searching in the wrong direction. I need to get the
> minimum and the maximum Z coordinate of the geometry vertices in order to
> apply a color range. This is quite easy to do for the whole geometry but I
> would know if there is a way just for the vertices inside the view frustum.
>

The CullVisitor maintains the near and far values used in the view frustum
so after the cull traversal you should be able query the settings.  See
CullVisitor::getCalculatedNearPlane() and getCalculatedFarPlane()

Robert.
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