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getTime callback for highlighting time

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This commit is contained in:
Felix Roos 2022-08-23 21:23:01 +02:00
parent 29029714ee
commit 7b0c80c8be
1 changed files with 11 additions and 13 deletions
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24
packages/react/src/hooks/useHighlighting.mjs
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@ -1,11 +1,9 @@
import { useEffect } from 'react';
import { useEffect, useRef } from 'react';
import { setHighlights } from '../components/CodeMirror6';
import { Tone } from '@strudel.cycles/tone';
let highlights = []; // actively highlighted events
let lastEnd;
function useHighlighting({ view, pattern, active }) {
function useHighlighting({ view, pattern, active, getTime }) {
const highlights = useRef([]);
const lastEnd = useRef();
useEffect(() => {
if (view) {
if (pattern && active) {
@ -13,16 +11,16 @@ function useHighlighting({ view, pattern, active }) {
function updateHighlights() {
try {
const audioTime = Tone.getTransport().seconds;
const audioTime = getTime();
// force min framerate of 10 fps => fixes crash on tab refocus, where lastEnd could be far away
// see https://github.com/tidalcycles/strudel/issues/108
const begin = Math.max(lastEnd || audioTime, audioTime - 1 / 10);
const begin = Math.max(lastEnd.current || audioTime, audioTime - 1 / 10);
const span = [begin, audioTime + 1 / 60];
lastEnd = audioTime + 1 / 60;
highlights = highlights.filter((hap) => hap.whole.end > audioTime); // keep only highlights that are still active
lastEnd.current = audioTime + 1 / 60;
highlights.current = highlights.current.filter((hap) => hap.whole.end > audioTime); // keep only highlights that are still active
const haps = pattern.queryArc(...span).filter((hap) => hap.hasOnset());
highlights = highlights.concat(haps); // add potential new onsets
view.dispatch({ effects: setHighlights.of(highlights) }); // highlight all still active + new active haps
highlights.current = highlights.current.concat(haps); // add potential new onsets
view.dispatch({ effects: setHighlights.of(highlights.current) }); // highlight all still active + new active haps
} catch (err) {
// console.log('error in updateHighlights', err);
view.dispatch({ effects: setHighlights.of([]) });
@ -34,7 +32,7 @@ function useHighlighting({ view, pattern, active }) {
cancelAnimationFrame(frame);
};
} else {
highlights = [];
highlights.current = [];
view.dispatch({ effects: setHighlights.of([]) });
}
}