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 CAD / Development / Organizations / LDraw / 4612
4611  |  4613
Subject: 
Re: Color page updated
Newsgroups: 
lugnet.cad.dev.org.ldraw
Date: 
Wed, 2 Dec 2009 21:00:45 GMT
Viewed: 
28088 times
  
In lugnet.cad.dev.org.ldraw, Andrew Westrate wrote:
> I apparently have missed the discussion when it comes to certain colors are
> suddenly "not supported," but I'd like to register my opinion on it.
> 
> It is a huge error to be calling colors in the ranges of 32-47 and 256-511 as
> "MLCad color codes" or to somehow suggest that they shouldn't be considered
> valid just because they don't show up in the LDConfig.ldr file.  As I understand
> it, the original LDraw executable defined the following colors:
> 
>  0 - 15 : prefined set of common part colors
>  16, 24 : main color, edge color
>  32 - 47 : the  0 - 15 set of colors, but rendered as transparent (i.e. just
> adding 32 to first set)
>  256 - 511 : dithered colors; these are the main set of colors combined with
> each other to form a broader color palette.  This is described at the bottom of
> this page: http://www.ldraw.org/OLD/reference/specs/colors.shtml
> 
> This has nothing to do with MLCad, except that MLCad supported the original
> LDraw's usage of these colors.
> 
> Over time, some of the dithered colors were redefined by convention, so that
> black+black (256) became black rubber, white+white (511) became white rubber,
> yellow+yellow (494) became electrical contact metal.  Eventually the LDConfig
> file was created and these were formalized.
> 
> In my opinion, just because some of these colors didn't make it into the config
> file, that doesn't mean they're not valid, because
> 
>   A) we have always tried to maintain backwards compatibility, and
>   B) we have to allow not only for the color of molded plastic and rubber
> pieces, but also all the colors of printed parts.  There are far more shades of
> paint colors used on printed parts then there will ever be of ABS plastic, and
> as long as we do patterns as quads and triangles, we have to have a big enough
> color palette to accomodate that.
> 
> 
> So, how about we just add the missing transparent and dithered colors to the
> config file?
> 
> Andy

Although I have decided to refrain from participation in this thread (you
already know my position and you totally neglect it), I make one exception and
say "Amen!" to all of Andy's points above.

/Tore



Message is in Reply To:
  Re: Color page updated
 
(...) I apparently have missed the discussion when it comes to certain colors are suddenly "not supported," but I'd like to register my opinion on it. It is a huge error to be calling colors in the ranges of 32-47 and 256-511 as "MLCad color codes" (...) (17 years ago, 2-Dec-09, to lugnet.cad.dev.org.ldraw)

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