hacklab/strudel
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

more flexible pianoroll

Browse source
This commit is contained in:
Felix Roos 2022-06-05 23:37:24 +02:00
parent 5cd80b5817
commit c7fdf5245a
2 changed files with 72 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

23
packages/tone/draw.mjs
View file

@ -20,7 +20,7 @@ export const getDrawContext = (id = 'test-canvas') => {
return canvas.getContext('2d');
};
Pattern.prototype.draw = function (callback, cycleSpan, lookaheadCycles = 1) {
Pattern.prototype.draw = function (callback, { from, to, onQuery }) {
if (window.strudelAnimation) {
cancelAnimationFrame(window.strudelAnimation);
}
@ -29,19 +29,22 @@ Pattern.prototype.draw = function (callback, cycleSpan, lookaheadCycles = 1) {
events = [];
const animate = (time) => {
const t = Tone.getTransport().seconds;
if (cycleSpan) {
const currentCycle = Math.floor(t / cycleSpan);
if (from !== undefined && to !== undefined) {
const currentCycle = Math.floor(t);
if (cycle !== currentCycle) {
cycle = currentCycle;
const begin = currentCycle * cycleSpan;
const end = (currentCycle + lookaheadCycles) * cycleSpan;
events = this._asNumber(true) // true = silent error
.query(new State(new TimeSpan(begin, end)))
.filter(Boolean)
.filter((event) => event.part.begin.equals(event.whole.begin));
const begin = currentCycle + from;
const end = currentCycle + to;
setTimeout(() => {
events = this._asNumber(true) // true = silent error
.query(new State(new TimeSpan(begin, end)))
.filter(Boolean)
.filter((event) => event.part.begin.equals(event.whole.begin));
onQuery?.(events);
}, 0);
}
}
callback(ctx, events, t, cycleSpan, time);
callback(ctx, events, t, time);
window.strudelAnimation = requestAnimationFrame(animate);
};
requestAnimationFrame(animate);