Is there a code/library that can calculate a Voronoi diagram for planes (parallelograms) in 3D? I checked Qhull and it seems it can only work with points, in its examples Voro++ works with different size of spheres but I couldn't find anything for polygons.
In this image (sample planes in 3d) the parallelograms are 3D since they have a thickness, but in this case the thickness will be zero.!