Hi Nico, VirtualPlanetBuilder does nothing to control the lighting of the databases that it generates, it simply provide textured geometry with normals generated on them. It's entirely under your applications control how the scenes at light.
My best guess is that your are confused about the role of OpenGL lighting has on the scene. If you disable OpenGL lighting then OpenGL will rendering the scene purely using the glColour of the geometry (which will the deafult of be white for a VPB database) combined using TexEnv with the texures applied to the tiles. If you enable OpenGL lighting then the glLight settings set by the osg::Light will control how the colour is computed - combining the tile colour with the GL lighting, then combined with the texture. For illuminated scenes that you have a night and day element one usually keeps OpenGL lighting enabled for the whole scene and your simply change the osg::Light settings to make the scene darker or lighter, or simply have the light source direction/position pointing from a position that gives a scene that is in shade i.e. pointing away from the light source. Robert. On Tue, Nov 16, 2010 at 10:14 AM, Nico Bocio <[email protected]> wrote: > Hi, > > I have created some terrains using VirtualPlanetBuilder (plain terrain, > geocentric...) and using a lot of options and when I load these terrains in a > runtime visualizer and set the time at night, I can see the dark sky with the > stars but the terrains appear illuminated. > I have loaded other terrains created with other programs in the runtime and > they appears well at night, the terrain appears dark. > I have proved to pass some terrains created with virtualplanetBuilder to flt > with the option lighting=ON with the program osgconv and the flt generated > appears well at night. > > I don´t know how could I solve this problem, What could I do? > Thank you! > > Cheers, > Nico > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=33769#33769 > > > > > > _______________________________________________ > 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
