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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6581 | leency | 1 | --BRUSH Remap: Grayscale (desaturate) |
| 2 | --by Richard Fhager |
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| 3 | --http://hem.fyristorg.com/dawnbringer/ |
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| 4 | |||
| 5 | -- Copyright 2010 Richard Fhager |
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| 6 | -- |
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| 7 | -- This program is free software; you can redistribute it and/or |
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| 8 | -- modify it under the terms of the GNU General Public License |
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| 9 | -- as published by the Free Software Foundation; version 2 |
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| 10 | -- of the License. See |
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| 11 | |||
| 12 | -- This script was adopted from Evalion, a Javascript codecrafting/imageprocessing project |
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| 13 | --http://goto.glocalnet.net/richard_fhager/evalion/evalion.html |
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| 14 | |||
| 15 | |||
| 16 | percent = 100 |
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| 17 | |||
| 18 | -- |
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| 19 | function desaturate(percent,r,g,b) -- V1.0 by Richard Fhager |
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| 20 | p = percent / 100 |
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| 21 | a = (math.min(math.max(r,g,b),255) + math.max(math.min(r,g,b),0)) * 0.5 * p |
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| 22 | r = r + (a-r*p) |
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| 23 | g = g + (a-g*p) |
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| 24 | b = b + (a-b*p) |
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| 25 | return r,g,b |
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| 26 | end |
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| 27 | -- |
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| 28 | |||
| 29 | |||
| 30 | w, h = getbrushsize() |
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| 31 | |||
| 32 | for x = 0, w - 1, 1 do |
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| 33 | for y = 0, h - 1, 1 do |
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| 34 | putbrushpixel(x, y, matchcolor(desaturate(percent,getcolor(getbrushpixel(x,y))))); |
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| 35 | end |
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| 36 | end |