CGAL users discussion list

[tang <>]

Dear all,

I'd like to seperate to objects by CGAL's boolean operation. Could anyone
tell me how to do?

Two objects A (for example, a small cylinder) and B (a large box) which are
intersected and I'd like to seperate them (by different materials) for mesh.
I have the following operations:

                        Acopy=A;
                        A = (A - B).interior().closure();
                        B = (B + Acopy).interior().closure();
                        B = (B - A).interior().closure();

I checked the outputted OFF files of A and B and I found A is just what I
expected. I wish B have the same surface polygons as A in which it contacts
with A for mesh generation (contact objects should have the common polygons
at their interface). However, the outputted B is the same as before and the
polygons at the interface is not consistent. 

So how to do to let the output of B is correct?

Thanks,
Zhanghong Tang




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