Jason Miller <jas### [at] pinheirotcimetnet> wrote:
: Does Povray care about the winding of a mesh?  As in, does it use 1 sided or
: 2 sided polygons?  If it uses one sided, how can this be set to 2 sided?

  I suppose that a 1-sided polygon is (like, for example, in OpenGL) a polygon
that is seen only from one side. If the polygon is turned so that the other
side faces the camera, then it's not rendered.
  Povray only uses 2-sided polygons (ie. they are rendered now matter how they
are rotated). I don't know of any plans of adding support for 1-sided polygons
to povray (I'm not even sure how easy it is to make in raytracing).

  (I think that many people here will answer you with the double_illuminate
thing, but I suppose that that was not what you are asking, but I think it's
that visibility thing. Correct me if I'm wrong.)

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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