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Update an example of Nef_2 to show how to use Exact_rational (#8643) 

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## Summary of Changes

There are 4 examples in Nef_2 package: three use Exact_integer, and one
uses a bounded kernel (which is undocumented).

Update one example to show how to use Exact_rational (wich requires to
change the kernel).

## Release Management

* Affected package(s): Nef_2
This commit is contained in:
Sebastien Loriot 2024-12-10 16:18:29 +01:00 committed by GitHub
parent dfa144deb5 e9daed535f
commit c9b7c3b464
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1 changed files with 6 additions and 6 deletions
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12
Nef_2/examples/Nef_2/nef_2_construction.cpp
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@ -1,10 +1,10 @@
#include <CGAL/Exact_integer.h>
#include <CGAL/Filtered_extended_homogeneous.h>
#include <CGAL/Exact_rational.h>
#include <CGAL/Extended_cartesian.h>
#include <CGAL/Nef_polyhedron_2.h>
#include <cassert>
typedef CGAL::Exact_integer RT;
typedef CGAL::Filtered_extended_homogeneous<RT> Extended_kernel;
typedef CGAL::Exact_rational FT;
typedef CGAL::Extended_cartesian<FT> Extended_kernel;
typedef CGAL::Nef_polyhedron_2<Extended_kernel> Nef_polyhedron;
typedef Nef_polyhedron::Point Point;
typedef Nef_polyhedron::Line Line;
@ -13,12 +13,12 @@ int main() {
Nef_polyhedron N1(Nef_polyhedron::COMPLETE);
Line l(2,4,2); // l : 2x + 4y + 2 = 0
Line l(2.1,4.8,2.0); // l : 2.1x + 4.8y + 2 = 0
Nef_polyhedron N2(l,Nef_polyhedron::INCLUDED);
Nef_polyhedron N3 = N2.complement();
assert(N1 == N2.join(N3));
Point p1(0,0), p2(10,10), p3(-20,15);
Point p1(0.1,0.), p2(10.8,10.25), p3(-20.18,15.14);
Point triangle[3] = { p1, p2, p3 };
Nef_polyhedron N4(triangle, triangle+3);
Nef_polyhedron N5 = N2.intersection(N4);