colors

extract colors from pictures
git clone git://git.2f30.org/colors.git
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commit c0705d6620aadbc782327f41bd6e3a0f0a08b28e
parent 94f621d9eed6b057281df9ec2ef927b80f01a42e
Author: lostd <lostd@2f30.org>
Date:   Fri Jun  5 16:41:29 +0300

Limit the number of clusters to brightness steps

Diffstat:
colors.c | 14+++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/colors.c b/colors.c @@ -75,13 +75,13 @@ adjclusters(struct cluster *c, size_t n) } void -initcluster_fixed(struct cluster *c, int i) +initcluster_brightness(struct cluster *c, int i) { TAILQ_INIT(&c->members); c->nmembers = 0; - c->center.x = i * (256 / nclusters); - c->center.y = i * (256 / nclusters); - c->center.z = i * (256 / nclusters); + c->center.x = i * (0xff / nclusters); + c->center.y = i * (0xff / nclusters); + c->center.z = i * (0xff / nclusters); } void @@ -117,7 +117,7 @@ initcluster_hue(struct cluster *c, int i) c->center = huetab[i]; } -void (*initcluster)(struct cluster *c, int i) = initcluster_fixed; +void (*initcluster)(struct cluster *c, int i) = initcluster_brightness; void initclusters(struct cluster *c, size_t n) @@ -268,6 +268,10 @@ main(int argc, char *argv[]) nclusters = LEN(huetab); initcluster = initcluster_hue; } + /* max 256 brightness steps */ + if (initcluster == initcluster_brightness && nclusters > 0xff) + nclusters = 0xff; + TAILQ_INIT(&points); parseimg(argv[0], fillpoints); initclusters(clusters, nclusters);