Subject:
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"Dither" colors in patterned/sticker parts
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Sat, 6 Feb 2010 00:58:50 GMT
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Please read and respond to this message if you are a parts author, particularly
if you have authored any patterned or sticker parts.
The LSC is trying to come up with rules for colors for both LDConfig.ldr and
official parts. We are having an internal disagreement about whether the
so-called “dither” colors are still needed for use in patterned and sticker
parts. Since none of us have much experience with authoring these parts, we
decided that we needed to get the opinions of existing authors of such parts.
Please note: we are specifically looking for opinions from people who have
authored patterned/sticker parts. That isn’t to say that we will ignore other
input, but be aware that such input will have less bearing on our decision than
input from patterned/sticker part authors.
At this point, we’ve come up with three possible options:
- Explicitly allow “dither” colors in official patterned/sticker parts. Right now, they are used, but we could not find anywhere in any specification where they are even mentioned. This option would essentially officially recognize the current status quo. (I’m not aware of any “dither” colors being used outside of patterns/stickers, but we don’t intend to allow that.)
- Explicitly disallow “dither” colors in all official parts, but allow RGB colors (of the form 0x2RRGGBB) in their place in patterned/sticker parts.
- Explicitly disallow “dither” colors in all official parts, and require all patterned/sticker parts to be created using “brick” colors from LDConfig.ldr.
A few items to clarify:
- I always put “dither” in quotes, because any official recognition of said colors will be as the RGB value that the two colors average together to form, and NOT the dither pattern that was originally used in ldraw.exe.
- We don’t plan to allow non-brick 0 !COLOUR statements in LDConfig.ldr, although that’s a separate but related issue. Hence my putting “brick” in the third option.
--Travis Cobbs (on behalf of the 2009-2010 LSC)
2009-2010 LSC Members (alphabetically by last name):
Travis Cobbs
Michael Heidemann
Santeri Piippo
Allen Smith
Scott Wardlaw
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Message has 7 Replies:
 | | Re: "Dither" colors in patterned/sticker parts
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| (...) For what it counts, I'd go for: * Explicitly disallow "dither" colors in all official parts, but allow RGB colors (of the form 0x2RRGGBB) in their place in patterned/sticker parts. This solution would give me the most freedom. I could just (...) (14 years ago, 6-Feb-10, to lugnet.cad.dat.parts)
| | | Re: "Dither" colors in patterned/sticker parts
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| (...) It would be very interesting which applications can not work with the (RGB colors (of the form 0x2RRGGBB)). Are they useful/necessary/developed? If someone has those application to test and make a summary of that would be great. cu mikeheide (14 years ago, 6-Feb-10, to lugnet.cad.dat.parts, FTX)
| | | Re: "Dither" colors in patterned/sticker parts
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| (...) I don't know if I got that right. Isn't Maersk Blue one of those part colors most wrongfully and misleadingly labeled as a "dithered" color? (...) I suggest the 0x2RRGGBB form is recommended for less "basic"/established pattern and sticker (...) (14 years ago, 7-Feb-10, to lugnet.cad.dat.parts, FTX)
| | | Re: "Dither" colors in patterned/sticker parts
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| (...) I have authored patterned parts, and for me this is the only viable option. This has worked just fine for the past decade, and I don't see any good reason why it should be broken. The second option (using 0x2RRGGBB) would just be very (...) (14 years ago, 8-Feb-10, to lugnet.cad.dat.parts, FTX)
| | | Re: "Dither" colors in patterned/sticker parts
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| Hello, "Travis Cobbs" <tcobbs@REMOVEgmail.com> schrieb im Newsbeitrag news:KxEAq2.86J@lugnet.com... (...) I used dithered colors in the "Flag 2x2 with Goblets and Grapes" (2335p40). So in this case no other color would match the silver or gold color (...) (14 years ago, 9-Feb-10, to lugnet.cad.dat.parts)
| | | Re: "Dither" colors in patterned/sticker parts
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| (...) I would go for this option. I'm not a fan of allowing RGB values in official part files, I'd rather keep it to color codes. However, if there could be a standard for texture mapping patterns & stickers (and parts made by mixing multiple colors (...) (14 years ago, 9-Feb-10, to lugnet.cad.dat.parts, FTX)
| | | Re: "Dither" colors in patterned/sticker parts
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| As has been mentioned already in this thread, there is an ongoing effort to add support for texture maps to the LDraw format via meta commands. What hasn't been mentioned is that the current LSC is basically in favor of ratifying support for (...) (14 years ago, 10-Feb-10, to lugnet.cad.dat.parts, FTX)
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