66 lines
2.2 KiB
TypeScript
66 lines
2.2 KiB
TypeScript
export const line = (app: any) => (start: number, end: number, step: number = 1): number[] => {
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const countPlaces = (num: number) => {
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var text = num.toString();
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var index = text.indexOf(".");
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return index == -1 ? 0 : (text.length - index - 1);
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};
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const result: number[] = [];
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if ((end > start && step > 0) || (end < start && step < 0)) {
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for (let value = start; value <= end; value += step) {
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result.push(value);
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}
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} else if ((end > start && step < 0) || (end < start && step > 0)) {
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for (let value = start; value >= end; value -= step) {
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result.push(parseFloat(value.toFixed(countPlaces(step))));
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}
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} else {
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console.error("Invalid range or step provided.");
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}
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return result;
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};
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export const sine = (app: any) => (freq: number = 1, phase: number = 0): number => {
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return Math.sin(2 * Math.PI * freq * (app.clock.ctx.currentTime - phase));
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};
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export const usine = (app: any) => (freq: number = 1, phase: number = 0): number => {
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return ((sine(app)(freq, phase) + 1) / 2);
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};
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export const saw = (app: any) => (freq: number = 1, phase: number = 0): number => {
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return (((app.clock.ctx.currentTime * freq + phase) % 1) * 2 - 1);
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};
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export const usaw = (app: any) => (freq: number = 1, phase: number = 0): number => {
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return ((saw(app)(freq, phase) + 1) / 2);
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};
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export const triangle = (app: any) => (freq: number = 1, phase: number = 0): number => {
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return (Math.abs(saw(app)(freq, phase)) * 2 - 1);
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};
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export const utriangle = (app: any) => (freq: number = 1, phase: number = 0): number => {
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return ((triangle(app)(freq, phase) + 1) / 2);
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};
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export const square = (app: any) => (freq: number = 1, duty: number = 0.5): number => {
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const period = 1 / freq;
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const t = (Date.now() / 1000) % period;
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return (t / period < duty ? 1 : -1);
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};
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export const usquare = (app: any) => (freq: number = 1, duty: number = 0.5): number => {
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return ((square(app)(freq, duty) + 1) / 2);
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};
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export const noise = (app: any) => (): number => {
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return (app.randomGen() * 2 - 1); // Assuming randomGen() is defined in the app context
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};
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export const unoise = (app: any) => (): number => {
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return ((noise(app)() + 1) / 2);
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};
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