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This commit is contained in:
Felix Roos 2022-02-22 00:48:00 +01:00
parent f6be175af0
commit 413d401567
14 changed files with 873 additions and 471 deletions
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23
docs/_snowpack/link/strudel.js
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@ -107,7 +107,7 @@ class TimeSpan {
}
return result;
}
get midpoint() {
midpoint() {
return this.begin.add(this.end.sub(this.begin).div(Fraction(2)));
}
equals(other) {
@ -436,6 +436,9 @@ class Pattern {
edit(...funcs) {
return stack(...funcs.map((func) => func(this)));
}
pipe(func) {
return func(this);
}
_bypass(on2) {
on2 = Boolean(parseInt(on2));
return on2 ? silence : this;
@ -456,6 +459,24 @@ function pure(value) {
function steady(value) {
return new Pattern((span) => Hap(void 0, span, value));
}
export const signal = (func) => {
const query = (span) => [new Hap(void 0, span, func(span.midpoint()))];
return new Pattern(query);
};
const _toBipolar = (pat) => pat.fmap((x) => x * 2 - 1);
const _fromBipolar = (pat) => pat.fmap((x) => (x + 1) / 2);
export const sine2 = signal((t) => Math.sin(Math.PI * 2 * t));
export const sine = _fromBipolar(sine2);
export const cosine2 = sine2._early(0.25);
export const cosine = sine._early(0.25);
export const saw = signal((t) => t % 1);
export const saw2 = _toBipolar(saw);
export const isaw = signal((t) => 1 - t % 1);
export const isaw2 = _toBipolar(isaw);
export const tri2 = fastcat(isaw2, saw2);
export const tri = fastcat(isaw, saw);
export const square = signal((t) => Math.floor(t * 2 % 2));
export const square2 = _toBipolar(square);
function reify(thing) {
if (thing?.constructor?.name == "Pattern") {
return thing;