rotating breps inside a volume (hoopsnake)

hi to everyone

What I'm trying to do is restrict the rotation of the breps inside a maximum volume so that they grow in the interior of the same. Ive being fighting with the deffinition for a while with out finding the way.

I use the mesh inclusion command and the function if. testing the four possible rotations (0,90,180,270) and choosing one that is inside the volume. Ill probably should do the test also with the one that comes next brep to rotate so im sure i doesnt overlap with another one.

The problem comes when I test the actual brep with the ones already rotated so that the brep doesn't overlap any of the breps already rotated. I must be doing something wrong win the logic.

If theres anyone that could throw some light would be appreciate.

Thanks and sorry for my bad explication and english