Subject:
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Re: Color problems in L3P
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Newsgroups:
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lugnet.cad.ray
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Date:
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Wed, 15 Mar 2000 22:40:45 GMT
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Viewed:
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1557 times
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Chuck Sommerville wrote...
> I downloaded this really cool loader model:
>
> http://www.lugnet.com/cad/dat/models/?n=1086
>
> In MLcad, the claws are black. After making the POV file with L3P, the claws
> render yellow in POV and some of the decals go away.
>
> Looking at the files closer, I noticed that the claw part is defined as a sub
> model and is defined as black. Where the claw part is used in the hand, the
> part is defined as yellow. MLcad uses the subpart color, but L3P overrides
> the color with the subpart color. I believe the part should be rendered
> black, and the decals should show up. Am I doing something wrong?
Well, like HAL 9000 had difficulties handling contradicting orders,
POV apparently has too! The following extract from the model:
> 0 FILE wl_lhand.dat
> ...
> 1 14 0 -14 -50 1 0 0 0 0.98 0.17 0 -0.17 0.98 wl_claw.DAT
> 0 FILE wl_claw.dat
> 1 0 0 0 -30 1 -0.00 0 -0.00 -1 0 0 0 -1 2880.DAT
is converted by L3P to:
#declare wl__claw_dot_dat = object {
object { _2880_dot_dat matrix <...> matrix <...> material/texture { Color0 } }
}
#declare wl__lhand_dot_dat = union {
...
object { wl__claw_dot_dat matrix <...> material/texture { Color14 } }
}
In wl__lhand_dot_dat L3P tells POV to render wl__claw_dot_dat
using Color14, but wl__claw_dot_dat says: use Color0 for 2880.
In LDraw the rule is clear, use Color0. But the result varies in POV,
sometime Color0, sometimes Color14 - maybe dependent on the
number of other objects in the object/union.
To avoid problems, apply color once!
Use color 16 when referencing submodels that uses colors.
(Try changing color in all references to wl_xxx to 16)
/Lars
PS. See also http://www.lugnet.com/cad/?n=1285
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Message is in Reply To:
 | | Color problems in L3P
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| I downloaded this really cool loader model: (URL) MLcad, the claws are black. After making the POV file with L3P, the claws render yellow in POV and some of the decals go away. Looking at the files closer, I noticed that the claw part is defined as (...) (25 years ago, 14-Mar-00, to lugnet.cad.ray)
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