polygon_set_data<T>::resize() with holes when holes position is not known?

Hi,

I have a set of polygon data which consist of several arrays of coordinates which form the polygons. I resize them with polygon_set_data::resize() using boost::polygon::polygon_with_holes_data. Unfortunately there is a problem:

boost::polygon::polygon_with_holes_data expects a clear data structure: an outline polygon in one part of the structure and the polygons in a different one. But my input coordinate arrays do not make such definitions, they are just sets of polygons where it is known they belong together. So as an example: let's say I have two arrays of polygon data, one describes a triangle and one a rectangle. For these two shapes there is no clear definition which is the total outline and which is the hole. This definition is made implicitly by the size of these shapes and their location: so when the triangle is smaller than the rectangle and located completely within the rectangle, the triangle is the hole.

So my question is: is there a way to resize() polygons without that clear outline/holes structure? Means when outline and hole are swapped or mixed? Or are there any functions in boost::polygon which give the possibility to sort my input data by outline and holes?

Thanks!