code: public static Vector3f lerp(Vector3f a, Vector3f b, float percent) {
          return a.mul(1 - percent).add(b.mul(percent));
      }
docs: Calculates the linear interpolation between a and b with the given percent
  
  @param a The first know value
  @param b The second know value
  @param percent The percent
  @return the interpolated vector