Subject:
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Re: Alternate 6208 B-Wing Escort Fighter
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 8 Feb 2007 16:27:29 GMT
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Viewed:
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3854 times
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In lugnet.cad.dev, Timothy Gould wrote:
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In lugnet.starwars, Don Heyse wrote:
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In lugnet.announce.moc, Jim DeVona wrote:
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The other night I built an alternate ship using the pieces from my new
B-Wing kit.
What do you think?
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I like the ship, and especially that you’ve done it up in LDraw on
the Mac. Cool. I’ll have to leave any other comments to the
starwars and building experts though.
What I really like about that particular cad picture is the way it
highlights the fix for a problem that’s been bugging me about some
of the parts for a while. I hope you don’t mind if I hijack a fork
off of your post to talk about it a bit.
If you look at the picture you can see some of the convex curved
slopes have a bit of a tiger striping pattern when shaded. But
there’s also an upside down dark gray convex curved slope part that
doesn’t have the problem. The good part uses a fan design to lay
out the triangles so they all meet at one point where the convex
curve flattens out. The bad design uses a zig zag pattern of
triangles with lots of extra points along a straight edge. It
looks bad and uses extra points. Double plus bad! Part designers,
take note. Actually, I could swear there already was, once upon a
time, a mention in some part design guide somewhere about not
adding extra points along a straight edge.
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That problem has bugged me for a while but I didn’t realise there
was such a simple solution to it. I imagine that something similar
can be done where both edges are curves by setting up shells along
the double curves.
Now I’m off the fix the primitive in my home copy :)
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If you fix that one, perhaps you can take up the challenge of
the wedge brick. I
don’t think we ever solved that one properly for ldraw.
Enjoy,
Don
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Message has 1 Reply:
 | | Re: Alternate 6208 B-Wing Escort Fighter
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| (...) I'm wondering if something can't be done for general fits between two or three parabolas (perhaps I'm best to start with one parabolas and two lines). I'm trying to think of things but unfortunately geometry is my weakest branch of (...) (18 years ago, 8-Feb-07, to lugnet.cad.dev, FTX)
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Message is in Reply To:
| | Re: Alternate 6208 B-Wing Escort Fighter
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| (...) Hi Don, That problem has bugged me for a while but I didn't realise there was such a simple solution to it. I imagine that something similar can be done where both edges are curves by setting up shells along the double curves. Now I'm off the (...) (18 years ago, 8-Feb-07, to lugnet.cad.dev, FTX)
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