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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6581 | leency | 1 | --BRUSH: Find AA-colors from pencolors |
| 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 | cellw = 8 |
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| 13 | cellh = 4 |
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| 14 | colors = 256 |
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| 15 | |||
| 16 | setbrushsize(cellw * 3, cellh * 3) |
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| 17 | |||
| 18 | |||
| 19 | -- |
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| 20 | function makePalList(cols) |
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| 21 | pal = {} |
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| 22 | for n = 0, cols-1, 1 do |
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| 23 | r,g,b = getcolor(n) |
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| 24 | pal[n+1] = {r,g,b} |
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| 25 | end |
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| 26 | return pal |
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| 27 | end |
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| 28 | -- |
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| 29 | |||
| 30 | -- |
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| 31 | function getBestPalMatchHYBRID(rgb,pal,briweight) |
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| 32 | local diff,diffC,diffB,best,bestcol,cols,n,c,r,g,b,p,obri,pbri |
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| 33 | cols = #pal |
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| 34 | bestcol = 0 |
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| 35 | best = 9e99 |
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| 36 | |||
| 37 | r = rgb[1] |
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| 38 | g = rgb[2] |
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| 39 | b = rgb[3] |
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| 40 | |||
| 41 | obri = math.pow(r*9,2)+math.pow(g*16,2)+math.pow(b*8,2) |
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| 42 | |||
| 43 | for n=0, cols-1, 1 do |
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| 44 | p = pal[n+1] |
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| 45 | pbri = math.pow(p[1]*9,2)+math.pow(p[2]*16,2)+math.pow(p[3]*8,2) |
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| 46 | diffB = math.abs(obri - pbri) |
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| 47 | |||
| 48 | |||
| 49 | diffC = (math.pow(r-p[1],2)+math.pow(g-p[2],2)+math.pow(b-p[3],2)) * 400 |
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| 50 | --diff = diffB + diffC |
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| 51 | diff = briweight * (diffB - diffC) + diffC |
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| 52 | if diff <= best then bestcol = n; best = diff; end |
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| 53 | end |
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| 54 | |||
| 55 | return bestcol |
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| 56 | end |
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| 57 | -- |
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| 58 | |||
| 59 | -- |
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| 60 | function drawRectangle(x1,y1,w,h,c) |
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| 61 | for y = y1, y1+h, 1 do |
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| 62 | for x = x1, x1+w, 1 do |
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| 63 | putbrushpixel(x,y,c); |
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| 64 | end |
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| 65 | end |
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| 66 | end |
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| 67 | -- |
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| 68 | |||
| 69 | |||
| 70 | |||
| 71 | palList = makePalList(colors) |
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| 72 | |||
| 73 | cf = getforecolor() |
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| 74 | cb = getbackcolor() |
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| 75 | rf,gf,bf = getcolor(cf) |
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| 76 | rb,gb,bb = getcolor(cb) |
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| 77 | |||
| 78 | ra = (rf + rb) / 2 |
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| 79 | ga = (gf + gb) / 2 |
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| 80 | ba = (bf + bb) / 2 |
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| 81 | |||
| 82 | rgb1 = {ra,ga,ba} |
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| 83 | c1 = getBestPalMatchHYBRID(rgb1,palList,0.0) |
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| 84 | c2 = getBestPalMatchHYBRID(rgb1,palList,0.75) |
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| 85 | c3 = getBestPalMatchHYBRID(rgb1,palList,0.99) |
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| 86 | |||
| 87 | q = {{cf,c1,cb}, |
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| 88 | {cf,c2,cb}, |
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| 89 | {cf,c3,cb}} |
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| 90 | |||
| 91 | |||
| 92 | for y = 0, #q-1, 1 do |
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| 93 | for x = 0, #q[1]-1, 1 do |
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| 94 | |||
| 95 | drawRectangle(x*cellw,y*cellh,cellw,cellh,q[y+1][x+1]) |
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| 96 | |||
| 97 | end |
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| 98 | end |
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| 99 |