Subject:
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Re: LDraw extended colors (for Paul Gyugyi)
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 27 Apr 2000 15:26:24 GMT
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Viewed:
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722 times
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Lars C. Hassing wrote in http://www.lugnet.com/cad/dev/?n=4187
> (snip)
> During implementation of Gyugyi's Direct Colors, I browsed his LDLite code:
> (snip)
> and read his doc:
> (snip)
> The code and the doc doesn't match!
> If the code is the "truth", then the hex ranges in the last two
> paragraphs should be swapped:
> (snip)
> Please decide which to change, the code or the doc.
> (FYI MLCad follows the code)
Well, Paul, have you decided?
> Also I would like to suggest that 16 is replaced with 17 (0x11):
>
> | zcp->r = 17 * ((c & 0x00000f00) >> 8);
> | zcp->g = 17 * ((c & 0x000000f0) >> 4);
> | zcp->b = 17 * ((c & 0x0000000f) >> 0);
>
> In this way the max color intensity of 15 (0xF) gets mapped to 255 (0xFF)
> in stead of just 240 (0xF0).
What do you think?
/Lars
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Message has 1 Reply:
 | | Re: LDraw extended colors (for Paul Gyugyi)
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| (...) I just now noticed the thread. (Thanks for the email). I'll add support for the 24-bit range, it is a good idea. I'll look into the documentation bug. The code is correct and I'll change the docs to match. For the scaling, multiplying by 17 (...) (24 years ago, 5-May-00, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: LDraw extended colors
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| (...) During implementation of Gyugyi's Direct Colors, I browsed his LDLite code: | if ((c >= 0x4000000) && (c <= 0x7ffffff)) | { | /Numbers of 0x4000000 to 0x7ffffff are hard coded color values. | zcp->r = 16 * ((c & 0x00000f00) >> 8); | zcp->g = (...) (24 years ago, 20-Mar-00, to lugnet.cad.dev)
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