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
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
