-int hex_char_to_int (char c)
-{
- int r;
-
- if (c >= '0' && c <= '9') r = c - '0';
- else if (c >= 'a' && c <= 'f') r = c - 'a' + 10;
- else if (c >= 'A' && c <= 'F') r = c - 'A' + 10;
- else r = 0;
-
- return r;
-}
-
-
-int hex_to_rgb (char *hex, int *r, int *g, int *b)
-{
- int len;
-
- if (hex == NULL || hex[0] != '#') return (0);
-
- len = strlen (hex);
- if (len == 3 + 1) {
- *r = hex_char_to_int (hex[1]);
- *g = hex_char_to_int (hex[2]);
- *b = hex_char_to_int (hex[3]);
- }
- else if (len == 6 + 1) {
- *r = hex_char_to_int (hex[1]) * 16 + hex_char_to_int (hex[2]);
- *g = hex_char_to_int (hex[3]) * 16 + hex_char_to_int (hex[4]);
- *b = hex_char_to_int (hex[5]) * 16 + hex_char_to_int (hex[6]);
- }
- else if (len == 12 + 1) {
- *r = hex_char_to_int (hex[1]) * 16 + hex_char_to_int (hex[2]);
- *g = hex_char_to_int (hex[5]) * 16 + hex_char_to_int (hex[6]);
- *b = hex_char_to_int (hex[9]) * 16 + hex_char_to_int (hex[10]);
- }
- else return 0;
-
- return 1;
-}
-
-
-void get_color (char *hex, double *rgb)
-{
- int r, g, b;
- hex_to_rgb (hex, &r, &g, &b);
-
- rgb[0] = (r / 255.0);
- rgb[1] = (g / 255.0);
- rgb[2] = (b / 255.0);
-}
-
-