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flood fill adjusted for new light colors

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Albert Cahalan 2004-12-21 06:19:28 +00:00
parent 8fe16768d0
commit 1a322d076a
1 changed files with 14 additions and 6 deletions
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20
src/tuxpaint.c
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@ -13747,15 +13747,23 @@ static int colors_close(Uint32 c1, Uint32 c2)
}
else
{
double r, g, b;
SDL_GetRGB(c1, canvas->format, &r1, &g1, &b1);
SDL_GetRGB(c2, canvas->format, &r2, &g2, &b2);
if (abs(r1 - r2) <= 64 &&
abs(g1 - g2) <= 64 &&
abs(b1 - b2) <= 64)
return 1;
else
return 0;
// use distance in linear RGB space
r = sRGB_to_linear_table[r1] - sRGB_to_linear_table[r2];
r *= r;
g = sRGB_to_linear_table[g1] - sRGB_to_linear_table[g2];
g *= g;
b = sRGB_to_linear_table[b1] - sRGB_to_linear_table[b2];
b *= b;
// easy to confuse:
// dark grey, brown, purple
// light grey, tan
// red, orange
return r+g+b < 0.04;
}
#endif
}