/// <summary>
 /// Counts points outside convex hull.
 /// </summary>
 internal static long CountPointsOutsideConvexHull(
     this IPointCloudNode self, Hull3d query, int minCellExponent = int.MinValue
     )
 => CountPointsInsideConvexHull(self, query.Reversed(), minCellExponent);
 /// <summary>
 /// All points outside convex hull (excluding boundary).
 /// </summary>
 public static IEnumerable <Chunk> QueryPointsOutsideConvexHull(
     this IPointCloudNode self, Hull3d query, int minCellExponent = int.MinValue
     )
 => QueryPointsInsideConvexHull(self, query.Reversed(), minCellExponent);