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use HSV to pick random colors and avoid over-saturation or over-brightness

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This commit is contained in:
Paul Davis 2013-06-27 15:51:57 -04:00
parent 0e656f0a13
commit 6618c9e406
1 changed files with 12 additions and 1 deletions
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13
gtk2_ardour/utils.cc
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@ -755,6 +755,13 @@ unique_random_color (list<Gdk::Color>& used_colors)
while (1) { while (1) {
double h, s, v;
h = fmod (random(), 360.0);
s = (random() % 65535) / 65535.0;
v = (random() % 65535) / 65535.0;
#if 0
/* avoid neon/glowing tones by limiting them to the /* avoid neon/glowing tones by limiting them to the
"inner section" (paler) of a color wheel/circle. "inner section" (paler) of a color wheel/circle.
*/ */
@ -764,7 +771,11 @@ unique_random_color (list<Gdk::Color>& used_colors)
newcolor.set_red (random() % max_saturation); newcolor.set_red (random() % max_saturation);
newcolor.set_blue (random() % max_saturation); newcolor.set_blue (random() % max_saturation);
newcolor.set_green (random() % max_saturation); newcolor.set_green (random() % max_saturation);
#else
s = min (0.5, s); /* not too saturated */
v = max (0.9, v); /* not too bright */
newcolor.set_hsv (h, s, v);
#endif
if (used_colors.size() == 0) { if (used_colors.size() == 0) {
used_colors.push_back (newcolor); used_colors.push_back (newcolor);
return newcolor; return newcolor;