Hi Enrico,
On Thu, 2004-09-09 at 03:38, Enrico Borrione wrote:
> hi all,
> i am trying to determine what point of my geo is closest to the camera.
> I need to compare only the distance of visible vertices, which means
> those who are include in the camera Field Of View.
> Is there in OSG afast way of determining whether a point is in the FOV
> or behind the camera?
yup. You need the Camera and the Viewport that you're interested in. The
Camera can give you the current viewing frustum
(Camera::getFrustum(FrustumVolume& result, const Viewport& p), and that
being a Volume, you can test points for inclusion
(Volume::intersect(const Pnt3f &p)).
Hope it helps
Dirk
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