Module rhythm 

Rhythm arithmetic: Euclidean patterns, swing and ticks.

A bar has 16 sixteenth slots, numbered 0 to 15. Ticks count 480 per quarter note, as in the MIDI files the tool writes.

use sound_to_patch::music::rhythm::{euclid, onsets, ticks_for_ms};

assert_eq!(onsets(&euclid(3, 8)), [0, 3, 6]);
assert_eq!(ticks_for_ms(5.0, 120.0), Some(5));

Enums

Division

A note division and its length in ticks.

Pair

The two notes of a swung pair.

Functions

euclid

The Euclidean pattern of k onsets over n steps.

onsets

The steps that hold an onset.

rotate

The pattern with every onset moved rotation steps later, wrapping around.

sixteenth_ms

The length of a sixteenth in ms: a quarter of the beat period of the stem’s beat grid.

slot_ticks

The ticks of one slot of a bar of grid slots: 12, 16 or 24 slots give 160, 120 or 80 ticks.

swing_delay

The delay of the second note of a swung pair, in sixteenths, for a pair percent pct (50 is straight) and a pair of sixteenths.

swing_pct

The pair percent of a long-to-short ratio.

swing_ratio

The long-to-short ratio of a pair percent.

swing_ticks

The delay of the second note of a swung pair in ticks.

tick_ms

The length of one tick in ms, 1000 / ticks per second, the tick the MIDI writer uses.

ticks_for_ms

The whole ticks that cover ms at a tempo, rounded up, so an overlap is never shorter than asked.