Hi Paul, There is an osg::ComputeBoundVisitor that will compute the tight bounding box of a subgraph, you can use this instead of the node->getBound().
Robert. On Jan 23, 2008 3:28 AM, Paul Pocock <[EMAIL PROTECTED]> wrote: > Hi, > Wondering if anyone from the list can help me. > > I have a 3x3 grid of tiles from a terrain database, my aim is to get an > outline representation of this 3x3 by just using lines to represent each > tile. > > My solution is the following: > > osg::BoundingBox bbox ; > bbox.expandBy(node->getBound()); > > > > vertices->push_back(bbox.corner(0)); > vertices->push_back(bbox.corner(1)); > > vertices->push_back(bbox.corner(1)); > vertices->push_back(bbox.corner(3)); > > vertices->push_back(bbox.corner(2)); > vertices->push_back(bbox.corner(3)); > > vertices->push_back(bbox.corner(3)); > vertices->push_back(bbox.corner(2)); > > vertices->push_back(bbox.corner(0)); > vertices->push_back(bbox.corner(2)); > > > My problem stems from the fact that the square is way to big. I believe > it stems from the fact I'm using BoundingSphere to calculate extents.Is > there an obvious solution to this problem - To get a square that is > precisely the dimensions of the terrain tile? > > Thanks in Advance > > Paul > > > > > > IMPORTANT: This email remains the property of the Australian Defence > Organisation and is subject to the jurisdiction of section 70 of the CRIMES > ACT 1914. If you have received this email in error, you are requested to > contact the sender and delete the email. > > > _______________________________________________ > 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
