Subject:
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Re: Stl2dat settings?
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Fri, 9 Nov 2007 06:41:53 GMT
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Viewed:
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4543 times
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Hi,
> as a stl2dat toddler I'd like to know what kind of settings you use for the
> conversion with a spot on:
>
> -eps value (default 0.01)
> -teps value : minimum distance for coincidence (default 0.001)
> -deps value : maximum determinant for coplanar quads (default 0.1)
>
> I use the defaults listed at Marc's site:
>
> http://marc.klein.free.fr/lego/stl2dat/stl2dat.html
I use also the default values. In some very rare cases, i used a greater value
for teps (EG. 0.1) when the coordinates in the stl file have to few decimals.
> but still get some quads with non-coplanar vertices. I guess this can be tweaked
> with the teps and deps values.
The -deps value controls if two triangles can be merged to a quad. This value is
related to the -det option of l3p -check
> In addition I'd like to know if there is a
> workaround for the origin point. Looks like the STL's origin is the highest
> value on all three axes - is this correct? The -o XYZ option works fine but I'd
> rather have the STL carry the origin I want.
The STL format produced by some software contains only point in the positive
quadrant (all coordinates are strictly positive). This is because some older
stereolithography machines could not handle negative numbers.
There is generally an option to avoid that in the CAD software.
Rgds
Marc
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Message has 1 Reply:
 | | Re: Stl2dat settings?
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| (...) Could you please add this piece of info to your site, thx? (...) Also on this a bit of info would save the day. I experimented a bit with the values and it would be helpful if you could explain what happens if you increase or lower the values (...) (17 years ago, 25-Nov-07, to lugnet.cad.dat.parts)
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Message is in Reply To:
| | Stl2dat settings?
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| Hi folks, as a stl2dat toddler I'd like to know what kind of settings you use for the conversion with a spot on: -eps value (default 0.01) -teps value : minimum distance for coincidence (default 0.001) -deps value : maximum determinant for coplanar (...) (17 years ago, 9-Nov-07, to lugnet.cad, lugnet.cad.dat.parts)
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