[R] rgl lighting question

Barry Rowlingson b.rowlingson at lancaster.ac.uk
Fri Nov 21 21:01:28 CET 2008

2008/11/21 Rajarshi Guha <rguha at indiana.edu>:
> Hi, I'm using rgl to generate a 3D surface plot and I'm struggling to get
> the lighting correct. Currently the surface gets plotted, but is very
> 'shiny'. On rotating the view, I get to see parts of the surface - but
> overall I don't see much detail because of the spotlight like lighting.
> I've played around with the specular, ambient and diffuse but I can't bring
> out the details of the surface. Could anybody point me to some examples of
> how to make a plain matte surface, which isn't obscured by specular
> reflections?

 Have you tried lit=FALSE? This sphere is so unspecular it appears flat:

 > spheres3d(0,0,0,color="red",lit=FALSE)


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