Subject:
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Re: Seam width
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 22 Jan 2003 03:02:24 GMT
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Viewed:
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622 times
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In lugnet.cad.dev, Trond Hasse Lie writes:
> Hi.
>
> Just wondering:
>
> How do you calculate the seam width in programs like L3P and LDView?
> Do you just scale the part by x% ? Or ?
In LDView, I do a few things. First, I check to see if the file I just
loaded is a part. In order to be a part, it has to satisfy two criteria.
First, it can't be the child of a part. Second, it has to either be in the
LDraw Parts directory, or it has to have a header comment indicating that it
is a part.
Once I have determined that I have a part, I calculate its axis-aligned
bounding box. Then, for each of the X, Y, and Z axes, I calculate the scale
factor necessary to shrink that dimension by the seam width. For example,
for X I would calculate (width - seamWidth) / width as my scale factor.
Finally, I scale the part in each dimension based on the calculated scale
factor, while being sure that the resulting scaled part has a bounding box
centered in the same spot as the original bounding box.
--Travis Cobbs (tcobbs@REMOVE.halibut.com)
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Message is in Reply To:
 | | Seam width
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| Hi. Just wondering: How do you calculate the seam width in programs like L3P and LDView? Do you just scale the part by x% ? Or ? Trond Hasse Lie Norway (o\_/o) (21 years ago, 20-Jan-03, to lugnet.cad.dev)
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