Function getAngle

src/utils/circle.js:3–7

(r, angle, x0, y0)

'use strict';

function getAngle(r, angle, x0, y0) {
  let x1 = x0 + r * Math.cos(angle * Math.PI / 180);
  let y1 = y0 + r * Math.sin(angle * Math.PI / 180);
  return [x1.toFixed(2), y1.toFixed(2)];
}

/**
 * @param {count} point's count