diff options
Diffstat (limited to 'software/animation.ino')
| -rw-r--r-- | software/animation.ino | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/software/animation.ino b/software/animation.ino index 547caaa..4c4976e 100644 --- a/software/animation.ino +++ b/software/animation.ino @@ -3,3 +3,9 @@ unsigned long clamp_time(unsigned long unclamped_time) { return unclamped_time / frame_time_millis * frame_time_millis; } + +unsigned int zigzag(unsigned int size, int index) { + unsigned int zigzag_size = 2 * size - 2; + unsigned int mod = index % zigzag_size; + return mod < size - 1 ? mod : zigzag_size - mod; +} |