HI Matthieu, An osg::BoundingBox is an axis aligned bounding box, all faces could be the same size as in a cube, but this is certainly not constrained to represent cubes.
Secondly the scene graph uses BoundingBox for the Drawable leaves, and BoundingSphere for nodes of the scene graph. This combination provides the best combination of cull performance. Third, the bounding volumes in the scene graph hierarchy enclose all of the subgraph below them. This normally leads to the root bounding sphere being larger than the tightest bounding box you could create for the scene graph. If you wish to compute the tightest bound BounidingBox for your scene you need to use the osg::ComputeBoundsVisitor. Robert. On Thu, Oct 2, 2008 at 3:03 PM, Matthieu DIRRENBERGER <[EMAIL PROTECTED]> wrote: > Hello OSG masters, > > > > I have a question about BoundingBox (I checked the mailing archives before). > > You know that OSG generate BoundingBox, but it is really a box (all faces > have the same size). > > I need the Bounding Parallelepiped of my scene. Not just the bigger radius > from the center applied on each side, but the min/max coordinates on Z axis, > on X axis and on Y axis individually. > > I have wasted some time to try myself, but I don't understand how to do that > simply? > > I saw this example: > http://www.3drealtimesimulation.com/osg/code/osgcode_bbox1.htm > > But it is the same problem than with OSG integrated functions. Can you help > me? > > > > Thanks in advance > > > > Matthieu DIRRENBERGER > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
