Hi Jan, > -----Original Message----- > From: Jan Ciger > Sent: Tuesday, August 22, 2006 10:19 AM > > > the common case is that an artist does want/need to set > > ambient-diffuse-specular. > > Diffuse/specular - that's for sure, Blender supports that > quite well too. But ambient light? I somehow do not see the > point [...] completely incomprehensible and un-intuitive
OK. Rather than try to convince you of the value of ambient light, i'll conclude that there are folks who just really don't like ambient, and make it trivial for you to turn it off in the exporter UI. In fact, i've made the default false, so unless you specifically want ambient, you won't get it. > I would prefer to set the ambient component to zero vector > explicitly instead of "making up" some arbitrary value. The UI now lets you set ambient component to 0, or even omit it entirely if you like. > where did you find > that the ambient vs. diffuse have to sum to 1? I did not say they have to, it's just one common traditional way of using the OpenGL lighting model, which happens to have a physical analogy to the real world, mapped to the limitations of a computer monitor. There is no right and wrong way in such a general field as computer graphics, and definitely no point in discussing whether anyone's approach is 'better'. -Ben _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
