Hi Mukund, On Wed, Mar 2, 2011 at 7:16 PM, Mukund Keshav <[email protected]> wrote: > Well, in my application/project, i would want to know the gradients at > places, ie how the terrain slope is varying. To do this, won't we need a > heightmap? from which we can calculate the varying gradient?
You won't need a height map at all :-) The ray intersections that osgUtil::InteresectionVisitor/osgUtil::LineSegmentIntersector provide intersection information on the position and local normal of the surface as well as the node path to the geometry leaf being intersected. Have a look at the osgintersection and osgpick examples. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
