Subject:
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Re: LDraw color codes needed for rendering program
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Newsgroups:
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lugnet.cad.dev
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Date:
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Mon, 8 Jan 2001 23:32:43 GMT
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Viewed:
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420 times
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Gary Williams wrote...
> Apparently not all LDraw color codes are specified in the LDraw FAQ ... and
> some that are, are missing the RGB assignments (for instance: 11, 3, 12, 5).
> Code 39 is used by the car.dat file that is included with LDraw, but it
> seems to be missing from the FAQ.
>
> Is there a definitive list of color code assignments somewhere that I can
> use?
You may have a look in this L3Lab generated table:
http://home16.inet.tele.dk/hassing/ldcolors.html
which has colors 0..63 for LDraw, LDLite+MLCad and L3P.
I'm working on adding more colors and more color schemes.
LDraw draws transparent colors (32 + 0..15) by dithering,
i.e. it only paints every other pixel in a checker board pattern.
It uses the 0..15 color for that.
Other programs may use different colors for the transparent color
and the non-transparent color.
E.g. LDLite+MLCad use (153,153,153) for the transparent grey 39 (32+7)
and (170,170,170) for the non-transparent grey 7.
How are you going to implement transparent colors?
Blending is rather difficult if it has to support multiple transparent
layers correctly...
In L3Lab you may try out blending (which is not perfect...)
I can offer you a C subroutine, Color2RGB, which
converts any valid LDraw color into RGB according to
various color schemes. It also supports extended colors,
see http://home16.inet.tele.dk/hassing/l3p.html#extcol
/Lars
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Message has 2 Replies:
 | | Re: LDraw color codes needed for rendering program
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| ----- Original Message ----- From: "Lars C. Hassing" <lch@ccieurope.com> To: <lugnet.cad.dev@lugnet.com> Sent: Monday, January 08, 2001 5:32 PM Subject: Re: LDraw color codes needed for rendering program (...) and (...) 5). (...) can (...) Thanks, (...) (23 years ago, 9-Jan-01, to lugnet.cad.dev)
| | | Re: LDraw color codes needed for rendering program
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| ----- Original Message ----- From: "Lars C. Hassing" <lch@ccieurope.com> To: <lugnet.cad.dev@lugnet.com> Sent: Monday, January 08, 2001 5:32 PM Subject: Re: LDraw color codes needed for rendering program (...) Hmmm. How's this? (URL) simple and it (...) (23 years ago, 9-Jan-01, to lugnet.cad.dev)
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Message is in Reply To:
| | LDraw color codes needed for rendering program
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| Hello, Over a year ago, I mentioned on this list that I was considering making a new Lego CAD program for Windows and Linux, but until now I've been really pressed for time. This weekend I finally resumed the project and got the rendering engine (...) (23 years ago, 8-Jan-01, to lugnet.cad.dev)
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