I take it GroundObject is your own class that acts as a container. Have you implemented the traverse method?
2009/2/11 Engvall Åsa <asa.engv...@saabgroup.com>: > Yes, but I was expecting that the visitor should traverse the graph an find > the geometry that is below the GroundObject. If I do the same thing on an > osg::Node, it works. Both the Node and the GroundObject are created using > readNodeFile. > > Åsa > > -----Ursprungligt meddelande----- > Från: osg-users-boun...@lists.openscenegraph.org > [mailto:osg-users-boun...@lists.openscenegraph.org] För Simon Hammett > Skickat: den 11 februari 2009 12:51 > Till: OpenSceneGraph Users > Ämne: Re: [osg-users] ComputeBoundsVisitor problem > > ComputeBoundsVisitor only computes bounds for drawables. ie geometry. > > 2009/2/11 Engvall Åsa <asa.engv...@saabgroup.com>: >> Hi osg-users! >> >> I want to use a ComputeBoundsVisitor for finding the bounds of an object. >> The object belongs to the class GroundObject, which is derived from >> osg::Node. >> >> Please have a look at this short function. The visitor is probably not >> executed, and the resulting bounding box is not valid. >> >> void GroundObject::calculateDistanceToGround(void) >> { >> // Calculate distance from local origin to ground. >> osg::ComputeBoundsVisitor cbv; >> accept(cbv); >> osg::BoundingBox box = cbv.getBoundingBox(); >> if (!box.valid()) ssPrintf("Bounding box is not valid!\n"); >> _distanceToGround = osg::absolute(box.zMin()); } >> >> What is wrong here? >> Thanks in advance, >> >> Åsa Engvall >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph. >> org >> >> > > > > -- > The truth is out there. Usually in header files. > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- The truth is out there. Usually in header files. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
