Hi! I work usually with Rhinoceros and I want to export my models to pov,
I've succeded on that but there is some problems:

when Rhino describes a point uses a different notation than pov ie.
3.35017e-016 when the unit is small and pov uses for example 0.633884. So
on the scene always I miss polygons, what can I do?

Thanks

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In article <web.3f6e1a36e195b7c52b651b550@news.povray.org> , "Asticles" 
<bor### [at] hotmailcom> wrote:

> Hi! I work usually with Rhinoceros and I want to export my models to pov,

I don't really think this is a question for the advanced-users group.
p.general would have been a more appropriate place to ask this question, or
at least you should shape up your basic math knowledge a bit ;-)  Anyway...

> when Rhino describes a point uses a different notation than pov ie.
> 3.35017e-016 when the unit is small and pov uses for example 0.633884. So
> on the scene always I miss polygons, what can I do?

Scale up your scene inside POV-Ray (if you can't in your modeler).  The
notation isn't the problem.  It is what is actually being expressed, that is
3.35017e-16 is (don't make me count the zeros) 0.000000000000000335017.  So
it is simply *far* too small.

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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Asticles <bor### [at] hotmailcom> wrote:
> when Rhino describes a point uses a different notation than pov ie.
> 3.35017e-016 when the unit is small and pov uses for example 0.633884. So
> on the scene always I miss polygons, what can I do?

  POV-Ray supports that e-notation as well, so that should be a problem.

  There are several reasons why the triangles are missing. For instance,
if two vertices of the triangle are too close to each other, POV-Ray will
qualify it as degenerated and remove it. I don't know what is the internal
epsilon value used for making this comparison, but it might be larger than
the distance between the vertices generated by rhinoceros.
  Another possibility is simply that you are experiencing shadowing problems
of smooth meshes. In order to dismiss this possibility, try making the
mesh shadowless and double-illuminated: Do the missing triangles appear?
If yes, then it was the shadowing problem. If no, then they are truely
missing.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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