Montecarlo Pi Generation

pi_mc.js

const zero = 0;
const one = 1;
const two = 2;
const thousand = 1000;

var Point = class {
    constructor(x, y) 
    {
        this.x = x;
        this.y = y;
    }
    
    toString() {
        return `(${this.x}, ${this.y})`;
    }
}

function generate_2d_point(xstart, xrange, ystart, yrange) {
    return () => new Point(Math.random() * xrange + xstart, Math.random() * yrange + ystart);
}

function check_inside_circle(center, radius, point) {
    if ((point.x - center.x) ** 2 + (point.y - center.y) ** 2 < radius ** 2) {
        return one;
    }

    return zero;
}

function run(sample_number, probability_distribution, estimator_function) {
    let miu = 0;

    for (let i = 0; i < sample_number; i++) {
        if (estimator_function(probability_distribution())) {
            miu = miu + 1
        }
    }
    
    return miu / sample_number;
}

function calculate_pi() {
    let sample_number = thousand * thousand;
    let radius = one;
    let center = new Point(zero, zero);
    let area_of_square = two * two;
    
    let generator = generate_2d_point(-one, two, -one, two);
    let estimator_function = (point) => check_inside_circle(center, radius, point);
    return run(sample_number, generator, estimator_function) * area_of_square;
}

console.log(calculate_pi());