export const line = (app: any) => (start: number, end: number, step: number = 1): number[] => {
    const countPlaces = (num: number) => {
        var text = num.toString();
        var index = text.indexOf(".");
        return index == -1 ? 0 : (text.length - index - 1);
    };

    const result: number[] = [];

    if ((end > start && step > 0) || (end < start && step < 0)) {
        for (let value = start; value <= end; value += step) {
            result.push(value);
        }
    } else if ((end > start && step < 0) || (end < start && step > 0)) {
        for (let value = start; value >= end; value -= step) {
            result.push(parseFloat(value.toFixed(countPlaces(step))));
        }
    } else {
        console.error("Invalid range or step provided.");
    }

    return result;
};

export const sine = (app: any) => (freq: number = 1, phase: number = 0): number => {
    return Math.sin(2 * Math.PI * freq * (app.clock.ctx.currentTime - phase));
};

export const usine = (app: any) => (freq: number = 1, phase: number = 0): number => {
    return ((sine(app)(freq, phase) + 1) / 2);
};

export const saw = (app: any) => (freq: number = 1, phase: number = 0): number => {
    return (((app.clock.ctx.currentTime * freq + phase) % 1) * 2 - 1);
};

export const usaw = (app: any) => (freq: number = 1, phase: number = 0): number => {
    return ((saw(app)(freq, phase) + 1) / 2);
};

export const triangle = (app: any) => (freq: number = 1, phase: number = 0): number => {
    return (Math.abs(saw(app)(freq, phase)) * 2 - 1);
};

export const utriangle = (app: any) => (freq: number = 1, phase: number = 0): number => {
    return ((triangle(app)(freq, phase) + 1) / 2);
};

export const square = (app: any) => (freq: number = 1, duty: number = 0.5): number => {
    const period = 1 / freq;
    const t = (Date.now() / 1000) % period;
    return (t / period < duty ? 1 : -1);
};

export const usquare = (app: any) => (freq: number = 1, duty: number = 0.5): number => {
    return ((square(app)(freq, duty) + 1) / 2);
};

export const noise = (app: any) => (): number => {
    return (app.randomGen() * 2 - 1); // Assuming randomGen() is defined in the app context
};

export const unoise = (app: any) => (): number => {
    return ((noise(app)() + 1) / 2);
};