Thanks a lot for the pointer to rgl.pop() - that works (as does
looking at the examples!)
On Nov 22, 2008, at 10:28 AM, Duncan Murdoch wrote:
On 21/11/2008 2:30 PM, Rajarshi Guha wrote:
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?
This gives the regular shiny surface:
library(rgl)
example(surface3d)
This gives one with no specular reflections, because the material
doesn't do that:
open3d()
surface3d(x, y, z, color=col, back="lines", specular="black")
And here's another way to get no specular reflections. This time
there's no light to reflect that way:
open3d()
rgl.pop("lights")
light3d(specular="black")
surface3d(x, y, z, color=col, back="lines")
I suspect you missed the rgl.pop() call. If you just call light3d
or rgl.light() you'll add an additional light, you don't change the
existing one.
Duncan Murdoch
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