diff options
| -rw-r--r-- | colour.c | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -313,6 +313,7 @@ colour_find_rgb(u_char r, u_char g, u_char b) { struct colour_rgb rgb = { .r = r, .g = g, .b = b }, *found; u_int distance, lowest, colour, i; + int dr, dg, db; found = bsearch(&rgb, colour_to_256, nitems(colour_to_256), sizeof colour_to_256[0], colour_cmp_rgb); @@ -322,11 +323,11 @@ colour_find_rgb(u_char r, u_char g, u_char b) colour = 16; lowest = UINT_MAX; for (i = 0; i < 240; i++) { - r = colour_from_256[i].r - rgb.r; - g = colour_from_256[i].g - rgb.g; - b = colour_from_256[i].b - rgb.b; + dr = (int)colour_from_256[i].r - r; + dg = (int)colour_from_256[i].g - g; + db = (int)colour_from_256[i].b - b; - distance = r * r + g * g + b * b; + distance = dr * dr + dg * dg + db * db; if (distance < lowest) { lowest = distance; colour = 16 + i; |