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use context for tone

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This commit is contained in:
Felix Roos 2022-02-25 20:43:38 +01:00
parent a3971f793c
commit 08ab06c9cc
2 changed files with 25 additions and 28 deletions
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47
repl/src/tone.ts
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@ -26,18 +26,17 @@ const Pattern = _Pattern as any;
// with this function, you can play the pattern with any tone synth
Pattern.prototype.tone = function (instrument) {
// instrument.toDestination();
return this.fmap((value: any) => {
value = typeof value !== 'object' && !Array.isArray(value) ? { value } : value;
return this._withEvent((event) => {
const onTrigger = (time, event) => {
if (instrument.constructor.name === 'PluckSynth') {
instrument.triggerAttack(value.value, time);
instrument.triggerAttack(event.value, time);
} else if (instrument.constructor.name === 'NoiseSynth') {
instrument.triggerAttackRelease(event.duration, time); // noise has no value
} else {
instrument.triggerAttackRelease(value.value, event.duration, time);
instrument.triggerAttackRelease(event.value, event.duration, time);
}
};
return { ...value, instrument, onTrigger };
return event.setContext({ ...event.context, instrument, onTrigger });
});
};
@ -105,13 +104,12 @@ Pattern.prototype._poly = function (type: any = 'triangle') {
// this.instrument = new PolySynth(Synth, instrumentConfig).toDestination();
this.instrument = poly(type);
}
return this.fmap((value: any) => {
value = typeof value !== 'object' && !Array.isArray(value) ? { value } : value;
return this._withEvent((event: any) => {
const onTrigger = (time, event) => {
this.instrument.set(instrumentConfig);
this.instrument.triggerAttackRelease(value.value, event.duration, time);
this.instrument.triggerAttackRelease(event.value, event.duration, time);
};
return { ...value, instrumentConfig, onTrigger };
return event.setContext({ ...event.context, instrumentConfig, onTrigger });
});
};
@ -138,8 +136,7 @@ const getTrigger = (getChain: any, value: any) => (time: number, event: any) =>
};
Pattern.prototype._synth = function (type: any = 'triangle') {
return this.fmap((value: any) => {
value = typeof value !== 'object' && !Array.isArray(value) ? { value } : value;
return this._withEvent((event: any) => {
const instrumentConfig: any = {
oscillator: { type },
envelope: { attack: 0.01, decay: 0.01, sustain: 0.6, release: 0.01 },
@ -149,39 +146,39 @@ Pattern.prototype._synth = function (type: any = 'triangle') {
instrument.set(instrumentConfig);
return instrument;
};
const onTrigger = getTrigger(() => getInstrument().toDestination(), value.value);
return { ...value, getInstrument, instrumentConfig, onTrigger };
const onTrigger = getTrigger(() => getInstrument().toDestination(), event.value);
return event.setContext({ ...event.context, getInstrument, instrumentConfig, onTrigger });
});
};
Pattern.prototype.adsr = function (attack = 0.01, decay = 0.01, sustain = 0.6, release = 0.01) {
return this.fmap((value: any) => {
if (!value?.getInstrument) {
return this._withEvent((event: any) => {
if (!event.context.getInstrument) {
throw new Error('cannot chain adsr: need instrument first (like synth)');
}
const instrumentConfig = { ...value.instrumentConfig, envelope: { attack, decay, sustain, release } };
const instrumentConfig = { ...event.context.instrumentConfig, envelope: { attack, decay, sustain, release } };
const getInstrument = () => {
const instrument = value.getInstrument();
const instrument = event.context.getInstrument();
instrument.set(instrumentConfig);
return instrument;
};
const onTrigger = getTrigger(() => getInstrument().toDestination(), value.value);
return { ...value, getInstrument, instrumentConfig, onTrigger };
const onTrigger = getTrigger(() => getInstrument().toDestination(), event.value);
return event.setContext({ ...event.context, getInstrument, instrumentConfig, onTrigger });
});
};
Pattern.prototype.chain = function (...effectGetters: any) {
return this.fmap((value: any) => {
if (!value?.getInstrument) {
return this._withEvent((event: any) => {
if (!event.context?.getInstrument) {
throw new Error('cannot chain: need instrument first (like synth)');
}
const chain = (value.chain || []).concat(effectGetters);
const chain = (event.context.chain || []).concat(effectGetters);
const getChain = () => {
const effects = chain.map((getEffect: any) => getEffect());
return value.getInstrument().chain(...effects, Destination);
return event.context.getInstrument().chain(...effects, Destination);
};
const onTrigger = getTrigger(getChain, value.value);
return { ...value, getChain, onTrigger, chain };
const onTrigger = getTrigger(getChain, event.value);
return event.setContext({ ...event.context, getChain, onTrigger, chain });
});
};

6
repl/src/useRepl.ts
View File

@ -56,8 +56,9 @@ function useRepl({ tune, defaultSynth, autolink = true, onEvent }: any) {
(time, event) => {
try {
onEvent?.(event);
if (!event.value?.onTrigger) {
const note = event.value?.value || event.value;
const { onTrigger } = event.context;
if (!onTrigger) {
const note = event.value;
if (!isNote(note)) {
throw new Error('not a note: ' + note);
}
@ -69,7 +70,6 @@ function useRepl({ tune, defaultSynth, autolink = true, onEvent }: any) {
/* console.warn('no instrument chosen', event);
throw new Error(`no instrument chosen for ${JSON.stringify(event)}`); */
} else {
const { onTrigger } = event.value;
onTrigger(time, event);
}
} catch (err: any) {