/// <summary>
///
/// </summary>
/// <param name="point"></param>
/// <param name="scale"></param>
/// <returns></returns>
public static double Box(Vec3d point, Vec3d scale)
{
var d = Vec3d.Abs(point) - scale;
return(Math.Min(d.ComponentMax, 0.0) + Vec3d.Min(d, 0.0).Length);
}