Hello OSG users: I am wondering what OSG can provide in solving the following problem:
Given a scene with on the order of 100s of simple geometry elements (perhaps osg::Box types) and given an (x,y,z) position in that scene, I'd like 1) A list of all polygonal planes that are *visible* from the given point (in all directions). For example, if the scene consisted of a single Box (a building), and the given point was near a corner at the base of that box, I'd like to know the two polygons describing the two visible faces of the box (sides of the building). If a portion of the box was occluded (by other geometry in the scene), I'd like the polygon that describes only the visible portion. I am basically interested in knowing the surface area of all the visible geometry in the scene. 2) The distance from the given point to a point on the visible surface. 3) Color information associated with each visible surface plane. Could someone suggest parts of the OSG API I should learn in order to solve this problem? Do you think OSG is the right tool for this sort of analysis? Thanks in advance for your help. John _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
