Subject:
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Re: Filling closed shapes?
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Newsgroups:
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lugnet.cad
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Date:
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Tue, 13 Oct 2009 12:03:18 GMT
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Viewed:
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9552 times
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Hi Santeri,
> Hi all - I've been working on the <http://peeron.com/inv/parts/57520px1 life
> counter> part, which is a patterned version of the sprocket wheel. I then
> managed to make the flat pattern and did a projection of the pattern on the
> 3d former, only to find this 3d pattern contain numerous gaps and rougly 80
> warped quads,- even worse, when I split these warped quads there then were
> TONS of new tiny gaps, making the part look horrible. Not to mention I made
> the pattern <http://www.brickshelf.com/gallery/arezey/ldraw/57520p01-1.png
> too small>. :-(
Size doesn't look that bad !?
> My problem probably was that I had made the fills in the pattern by making a
> plane quad covering the shape (made of lines), making a cutter file from the
> line shape and using Intersector on the quad, which isn't the best way to go
> but it was the only one I saw. I was aware of the gaps, thinking that they
> were too small to really hinder the part's quality. Additionally I used a
> non-triangle-condensing cut when gaps showed up and scaling factor didn't
> work...
I don't see why you needed to re-do the surface? Why not use the top shape of
the part and flatten it? Or maybe there is something I missed?
> So, now I plan to remake the pattern. And this time the right way. But first
> I'd need a proper technique to make the fill for the line shape. Anybody
> aware of something... ? Quad2Dat is out of the question because the
> background image feature doesn't work at all here.
Why shouldn't it work? Though Quad2Dat has a lot of issues, background image
feature always worked fine for me. See the method I describe here...
That said, I agree that having to align all quads of the pattern on underlying
surface can be a nightmare (especially considering the flimsiness of the "align"
tool of Quad2Dat). So I have created a new tool, Slicerpro (slicer-projector)
that not only projects the pattern on the former but also slices it along the
edges of the former. In addition, it may also do small adjustments to vertices
coordinates to make them match if previous rounding errors occured. So there
should be less gaps...
I have not yet written the documentation, but if you want to try it, get it
here: http://philohome.free.fr/xfer/Slicerpro.zip
Philo
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Message has 1 Reply:
 | | Re: Filling closed shapes?
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| (...) It's a little too small to annoy me.. the picture on Peeron seems like a misprint to me. (...) I mean that I first get a particular shape in its outlines (like a bunch of lines forming a 2) and I need to make a flat quad that covers it all, (...) (15 years ago, 13-Oct-09, to lugnet.cad, FTX)
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Message is in Reply To:
| | Filling closed shapes?
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| Hi all - I've been working on the (URL) life counter> part, which is a patterned version of the sprocket wheel. I then managed to make the flat pattern and did a projection of the pattern on the 3d former, only to find this 3d pattern contain (...) (15 years ago, 13-Oct-09, to lugnet.cad, FTX)
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