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[DAT] (requires LDraw-compatible viewer)
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Subject:
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Re: Slope parts with patterns...
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Wed, 23 Feb 2005 00:09:09 GMT
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Viewed:
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3506 times
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In lugnet.cad.dat.parts, Mark Chittenden wrote:
> Would making the pattern face of a slope (or wedge) a subpart to be used with
> the main piece (without face) subpart be ok? I'm thinking, that for slopes (and
> wedges), it would be easier to make the pattern a flat subpart, then rotate the
> subpart to the desired angle. I got this ideal from the patterned slope from set
> 7130 - Snowspeeder, and the patterned wedge from set 4500 - Rebel Snowspeeder.
> Unless I am mistaken, the wedge 4 x 4 has the exact same pattern printed on it
> as the slope brick 18 2 x 4 - and I think both pieces have the same angle to
> their slope.
>
> Here's peeron link's for comparison of the two pieces:
> Slope - http://www.peeron.com/inv/parts/30363px1
> Wedge - http://www.peeron.com/inv/parts/4858px4
I for one think this is a good idea. Rather than rotating the subpart, you
might find it easier to use a shear matrix. To shear a part, you basically
decide which axes are effected, such as the part's Y value increases or
decreases as the Z value increases, and then add a shearing factor to the matrix
in the right spot. the line would look like this:
# 1 15 a b c X 0 0 0 Y W 0 0 Z rect.dat
where W is the shear factor. It takes some trial and error to get it right, but
it can be very useful.
here's a real example:
1 15 0 0 0 2 0 0 0 1 1 0 0 2 rect.dat
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Message is in Reply To:
 | | Slope parts with patterns...
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| Would making the pattern face of a slope (or wedge) a subpart to be used with the main piece (without face) subpart be ok? I'm thinking, that for slopes (and wedges), it would be easier to make the pattern a flat subpart, then rotate the subpart to (...) (20 years ago, 22-Feb-05, to lugnet.cad.dat.parts)
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