Create an array of coordinate objects {x, y} of points on a circle within set bounds.

make_circle_coordinates.js

function make_circle_coordinates(top = 0, left = 0, bottom = 300, right = 300, points = 20, visual = true) {
    // e.g. top: 20, left: 20, right: 1900, bottom: 800
    let center = {
        x: (left + right) / 2,
        y: (top + bottom) / 2
    },
    radius = {
        x: right - center.x,
        y: bottom - center.y
    },
    output_points = [],
    // angles in radians
    angle_step = 2 * Math.PI / points;
    console.log(`Create circle with radius (${radius.x}, ${radius.y}) about point (${center.x}, ${center.y}).`);
    // to do: this lol
    for (let i = 0, angle = 0; i < points; i++, angle += angle_step) {
        let point = {
            x: center.x + Math.sin(angle) * radius.x,
            y: center.y + Math.cos(angle) * radius.y
        }
        output_points.push(point);
    }
    if (visual) {
        let p = document.createElement("p");
        p.classList.add("node");
        p.style.backgroundColor = "red";
        container.appendChild(p);
        p.style.top = center.y + "px";
        p.style.left = center.x + "px";
    }
    return output_points;
}