Hi Alan, On 4/16/07, Alan Harris <[EMAIL PROTECTED]> wrote:
Out of interest, when on a terrain (view height 2m) what points of the terrain grid rectangle (say 50m x 50m) that you are "stood" on are used to determine culling. The middle or corner points - it's possible that all five could be outside the view frustrum? I ask because it appears this rectangle is sometimes culled although part of it is visible.
For view frustum culling the enclosing bounding volume is used so all points should be taken into account. For cluster culling a single control point is used with a deviation angle, these values should be computed to make sure that all points are always seen, the control point usually sits above all points on tile. If the values are computed correctly then the cluster culling will result in premature culling. Robert. _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
