const DEGREE_TO_RADIAN = Math.PI / 180;

export function coordinateToPosition(lat, lng, radius) {
  const phi = (90 - lat) * DEGREE_TO_RADIAN;
  const theta = (lng + 180) * DEGREE_TO_RADIAN;

  return new THREE.Vector3(
    - radius * Math.sin(phi) * Math.cos(theta),
    radius * Math.cos(phi),
    radius * Math.sin(phi) * Math.sin(theta)
  );
}