var isArray = require('../type/is-array');

module.exports = function parseRadius(radius) {
  var r1 = 0,
      r2 = 0,
      r3 = 0,
      r4 = 0;
  if (isArray(radius)) {
    if (radius.length === 1) {
      r1 = r2 = r3 = r4 = radius[0];
    } else if (radius.length === 2) {
      r1 = r3 = radius[0];
      r2 = r4 = radius[1];
    } else if (radius.length === 3) {
      r1 = radius[0];
      r2 = r4 = radius[1];
      r3 = radius[2];
    } else {
      r1 = radius[0];
      r2 = radius[1];
      r3 = radius[2];
      r4 = radius[3];
    }
  } else {
    r1 = r2 = r3 = r4 = radius;
  }
  return {
    r1: r1,
    r2: r2,
    r3: r3,
    r4: r4
  };
};