Subject:
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Re: stl2dat conversion tool beta2
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 10 Feb 2000 17:33:55 GMT
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Viewed:
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835 times
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On Thu, 10 Feb 2000 11:36:31 GMT, Rui Martins <Rui.Martins@link.pt>
wrote:
> I haven't had time to check if the stl supports NURBS, or is it just a
> normal poligon based format ?
STL only support triangles. Nurbs (and other geometry) must be
converted by the CAD software to triangles. That's
why I choosed STL : it already contains triangles and that's very near
LDraw format. (In a geometric point of view)
> I have currently the TECHNIC Tire and Wheel done, the ones that came with
> the 8880 Super Car model (without the lines/optional lines), And the tool
> I used, allows to save in this format, so I have got to try it out.
>
> Buy the way, do you correctly generate these lines (expecially the
> optional ones) ?
Yes, I generate automatically the lines between two adjacent facet. If
the angle is lower than a certain value (about
45°) the line is optional. However, the program only check strictly
adjacent facets. I have to improve it so it check also
partial adjacent facets.
Are you interested to be able to change this value ?
Are they other things that you wish to control ?
Marc Klein
A Mindstorms fan.
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Message has 1 Reply:
 | | Re: stl2dat conversion tool beta2
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| (...) Ok, my cad program can do that, but I have to mess with it because the options to tesselate a surface are somewhat complex, at least if you want to be able to have some control on the number of polys generated. Does STL allow only for (...) (25 years ago, 11-Feb-00, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: stl2dat conversion tool beta2
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| (...) GREAT TOOL ! I haven't had time to check if the stl supports NURBS, or is it just a normal poligon based format ? I have currently the TECHNIC Tire and Wheel done, the ones that came with the 8880 Super Car model (without the lines/optional (...) (25 years ago, 10-Feb-00, to lugnet.cad.dev)
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