subtraction
Generates a solid that contains the volume of the positive solids not occupied
by the volume of the negative solids. Regions may be subtracted as well.
If a solid is subtracted off some surface not created by the solid modeler
extension or lines a special generalized subtraction shape definition is created
that knows how to deal with this.
positive :
ObjectSet
Positive solids
negative :
ObjectSet
Negative solids