Subject:
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Re: Dimensions of the parts
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Newsgroups:
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lugnet.cad.dev
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Date:
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Mon, 12 Apr 1999 17:14:33 GMT
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Viewed:
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666 times
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Leonardo Zide skrev i meddelandet
<3711E2FA.17EB08D@centroin.com.br>...
> Hi,
>
> I've been trying to add collision detection to LeoCAD but I'm stuck
> with a problem and would like to know if anyone has a good solution.
> Take for example 2 1x1 bricks and position them side by side, they
> will always be touching each other because their sizes are rounded up
> (they should be about 0.01 cm less). Can anyone think of a solution • to
> this ? Just don't tell me to resize all parts by hand. :)
>
> Leonardo
- Scale the piece dimensions by 0.9 or something like that for
comparisons - remember to use a _central_ point as origin
for the scaling (hmm, sounds like heavy work...)
- Easier: Scale the positions with 1.01 before doing the
comparison. Should be feasible, and not too much math.
No need for modified origins either.
- Just don't include equality (=) in your collision test! (?)
BTW, what is the minimum increment you can move/turn a piece?
--
Anders Isaksson, Sweden
BlockCAD: http://user.tninet.se/~hbh828t/proglego.htm
Gallery: http://user.tninet.se/~hbh828t/gallery.htm
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Message has 2 Replies:
 | | Re: Dimensions of the parts
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| (...) These only work for convex pieces. The hollow areas in a concave piece would not be handled properly, since at least one wall would actually move *closer* to the other piece. For example, consider a clip. If you scale its position by 1.01, the (...) (25 years ago, 12-Apr-99, to lugnet.cad.dev)
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Message is in Reply To:
| | Dimensions of the parts
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| Hi, I've been trying to add collision detection to LeoCAD but I'm stuck with a problem and would like to know if anyone has a good solution. Take for example 2 1x1 bricks and position them side by side, they will always be touching each other (...) (25 years ago, 12-Apr-99, to lugnet.cad.dev)
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