유니티(Unity) | Random Point Inside Circle

public Vector3 RandomPointInsideCircle(float radius)
{
    float u     = Random.Range(0f, 1f);
    float theta = u * (Mathf.PI * 2f);
    float sqrt  = Mathf.Sqrt(Random.Range(0f, 1f));
    radius *= sqrt;
 
    return new Vector3(radius * Mathf.Cos(theta), radius * Mathf.Sin(theta), 0f);
}