CGAL users discussion list

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I have looked up the CGAL manual, but I got no direct answer.

I guess it's created as the intermediate result of the AND operation of
2 existing nef-polyhedra. e.g:

Nef_polyhedron N0;
// ...
Nef_polyhedron N1(Plane_3( 1, 0, 0,-1),Nef_polyhedron::EXCLUDED);
N0 -= N1; // during this op, the cutting polygon should be already created

But how can I get this result?

Or, as an coarse implementation, as far as efficiency is concerned, I may
get the result I needed, in another form, using:

Nef_polyhedron N2(Plane_3( 1, 0, 0,-1),Nef_polyhedron::INCLUDED);
N0 -= !N2;

N0 will be the resulting slice of cutting Plane_3( 1, 0, 0,-1) with N0,
but, still, how can I get the polygon from the Nef_polyhedron data structure?

Any help or hints will be appreciated.

Max

 

Re：[cgal-discuss] How to get resulting polygen of cutting a polyhedron with a plane?

Hello,

I have a maybe simple question:

How to get resulting polygen of cutting a polyhedron with a plane?

Many thanks.

Max

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