Subject:
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Re: New LDConfig.ldr color file
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Newsgroups:
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lugnet.cad.dev.org.ldraw
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Date:
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Fri, 7 Aug 2009 14:17:00 GMT
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Viewed:
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27589 times
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In lugnet.cad.dev.org.ldraw, Joshua Delahunty wrote:
> In lugnet.cad.dev.org.ldraw, Roland Melkert wrote:
> > In lugnet.cad.dev.org.ldraw, Willy Tschager wrote:
> > > In lugnet.cad.dev.org.ldraw, Roland Melkert wrote:
> > > > About the >=30000 range, most current applications only allow upto 511 or 1023
> > > > for 'normal color numbers'. There are also some (unofficial?) reserved hex
> > > > spaces for encoded rgb values (#02000000..#03FFFFFF and 04000000..#07FFFFFF).
> > > >
> > > > Taking this into account I would also suggest using a hex range for these lc
> > > > core colors, so the color decoder code in any program can identify them a such
> > > > e.g (#400..#EFF (1024..3839)).
> > >
> > > This can be done with the caveat that we start with something like say 2001 or
> > > 3001 in order to preserve the original LEGO numbering starting from 1 to 300.
> > > for 2001 the TLG color number would be "#7D1". Correct?
> > >
> > > w.
> >
> > Indeed, basically it doesn't matter what range you use. I just wanted to point
> > out that 'other' ranges are rounded upon hexadecimal notation (due to math
> > advantages). So I suggested also using that for these new ldc numbers for
> > consistency sake.
> >
> > But human wise 2015 would be more recognizable than #40F (if #400..#EFF would be
> > used) I guess.
> >
> > I do think there should be an official 'normal' color ceiling defined by
> > ldraw.org though. Just like the now (unofficial) 512 ceiling.
>
> I chose 30000 as the base for TLG colors for a couple reasons:
>
> a) when the parts were renumbered internally around 1968 or so, they started
> with 3001 for the 2x4 brick and built from there. Around 1994, numbering shifted
> again. The numbers up to 10000 (where the old documentation codes had started)
> had been used, so they started at 30000 and built upwards. It seemed a nice nod
> to history to use a number starting with 30xx (or in this case 30xxx)
>
> b) subtract 30000, and you have the TLG color number, nothing else fancy to do
> to convert
>
> c) 3000 seemed too low to leave enough room for a "ceiling" for LDRAW colors.
So far we have much more TLC color numbers than in LDraw (Bricklink) with TLC
apparently not going further than 300. Therefore a numbering starting with 3000
would be fine.
w.
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