Subject:
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ldconfig.ldr and dithered colors
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sun, 6 Feb 2005 03:39:51 GMT
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Viewed:
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2624 times
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How is a renderer expected to handle dithered colors not mentioned explicitly in ldconfig.ldr ?
The "LDraw File Format" specification says:
"Also, colours 256 through 511 are dithered. So if you want to combine colours J and K, figure your colour value as
colour = (J * 16) + K + 256
The complementary colour of J is used as the complementary colour of the dithered value.
So you can control the edge colour (somewhat) by switching J and K."
This is fine, but for LGEO colors L3P has always tried K,J if J,K wasn't in L2P_COLR.TAB,
i.e. since 10,15 (431) is not defined, L3P tries 15,10 (506) and matches lg_mint.
I see that ldconfig.ldr has different entries for 7,15 (383 Chrome_Silver) and 15,7 (503 Light_Gray)
and 4,14 (334 Chrome_Gold) and 14,4 (484 Dark_Orange).
But for e.g. 1,0 (272 Dark_Blue) there's no 0,1 (257),
so what should color 257 be ?
272 or a blend of 0 and 1 ?
/Lars
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Message has 2 Replies:
 | | Re: ldconfig.ldr and dithered colors
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| (...) They should be fall back on the 'default spec' -- that is, dither them; don't rely on their counterpart's definition. But that doesn't really (...) Hmm. The LGEO colors don't have edge colors, do they? So using K,J instead of J,K [if J,K isn't (...) (20 years ago, 7-Feb-05, to lugnet.cad.dev)
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