Hi I would recommend you have a good read of the OpenGl docs on how it handles lighting as OSG is a straight pass through to OpenGL
For instance http://www.opengl.org/sdk/docs/man/xhtml/glLight.xml http://glprogramming.com/red/chapter05.html As to color you can have any color you in like by using any mixture Red, Green Blue 0,0,0 is black 1.0, 1.0.10 is white, 0.5,0.5,0.5 is a gray 1.0,0.0,0.0 is red etc Note many things affect the final color you see, the lighting model, shading model, colors of the vertices, textures applied to polygons, materials applied etc.... ____________________________________________________________________________ __ Gordon Tomlinson www.photographybyGordon.com www.gordontomlinson.com www.vis-sim.com "Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival" -Master Tambo Tetsura -----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of daniele argiolas Sent: Monday, March 21, 2011 12:03 PM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Light intensity and color Hi, when I put a light in my scene I notice that I can set position, direction, attenuation and diffuse, specular and ambient components. The first problem is, how can I set intensity of light? My light with this basic setting is to much strong. The second problem concerns color light. Why I can't set intermediate colors but only primary colors? thank you very much daniele ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=37765#37765 _______________________________________________ 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
