CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

I am afraid you will have to include AABB_traits.h before any kernel 
file (some intersection features used to be coded in that file). This
was fixed in the 3.7 release.
Is that an issue for you? or was it simply a remark?

Sebastien


On 09/22/2011 06:38 PM, Frankie Li wrote:
> Hi Sebastien,
>
> I was just using the example file provided by CGAL-3.5 to test this,
> which is "examples/AABB_tree/AABB_triangle_3_example.cpp". Below is the
> exact code with the modification that results in the compilation error.
> By moving the line "#include
> <CGAL/Exact_predicates_inexact_constructions_kernel.h>" down below the
> AABB_traits.h include, the compilation completes without any problem.
>
>
>
> Thanks once again!
>
>
> Frankie
>
>
> ------------------------------------------------------------
> #include <CGAL/basic.h>
>
> #include <iostream>
> #include <list>
>
> #include <CGAL/AABB_tree.h>
> #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
> #include <CGAL/AABB_traits.h>
>
> #include <CGAL/AABB_triangle_primitive.h>
>
> #include <CGAL/Simple_cartesian.h>
>
> typedef CGAL::Simple_cartesian<double> K;
>
> typedef K::FT FT;
> typedef K::Ray_3 Ray;
> typedef K::Line_3 Line;
> typedef K::Point_3 Point;
> typedef K::Triangle_3 Triangle;
>
> typedef std::list<Triangle>::iterator Iterator;
> typedef CGAL::AABB_triangle_primitive<K,Iterator> Primitive;
> typedef CGAL::AABB_traits<K, Primitive> AABB_triangle_traits;
> typedef CGAL::AABB_tree<AABB_triangle_traits> Tree;
>
> int main()
> {
> Point a(1.0, 0.0, 0.0);
> Point b(0.0, 1.0, 0.0);
> Point c(0.0, 0.0, 1.0);
> Point d(0.0, 0.0, 0.0);
>
> std::list<Triangle> triangles;
> triangles.push_back(Triangle(a,b,c));
> triangles.push_back(Triangle(a,b,d));
> triangles.push_back(Triangle(a,d,c));
>
> // constructs AABB tree
> Tree tree(triangles.begin(),triangles.end());
>
> // counts #intersections
> Ray ray_query(a,b);
> std::cout << tree.number_of_intersected_primitives(ray_query)
> << " intersections(s) with ray query" << std::endl;
>
> // compute closest point and squared distance
> Point point_query(2.0, 2.0, 2.0);
> Point closest_point = tree.closest_point(point_query);
> FT sqd = tree.squared_distance(point_query);
> std::cout << "squared distance: " << sqd << std::endl;
>
> return EXIT_SUCCESS;
> }
> ------------------------------------------------------------
>
> On 09/22/2011 12:28 PM, Sebastien Loriot (GeometryFactory) wrote:
> > Hi Frankie,
> >
> > actually this should not append and we should include basic.h in each
> > of our files to avoid user to take care of this.
> >
> > For your problem, I cannot reproduce it with the code provided.
> > Can you provide a minimal example showing the problem you have?
> >
> > Sebastien.
> >
> > On 09/22/2011 06:09 PM, Frankie Li wrote:
> > > Hi Sebastien,
> > >
> > > Unfortunately, that doesn't seem to solve the problem for me...
> > >
> > > I apologize ahead for being ignorant of this kind of problems, but is
> > > this due to namespace conflict? I am in the process of moving toward
> > > CGAL 3.7 or later, but admittedly, the migration process is a bit slow,
> > > and I would like to have a temporary fix (if possible) for the current
> > > version.
> > >
> > > Thanks again!
> > >
> > > Frankie
> > >
> > > On 09/22/2011 03:58 AM, Sebastien Loriot (GeometryFactory) wrote:
> > > > A golden rule in CGAL is that CGAL/basic.h should be included before
> > > > any other CGAL header (or a CGAL kernel that include CGAL/basic.h)
> > > >
> > > > See 2.4
> > > > http://www.cgal.org/Manual/beta/doc_html/cgal_manual/Preliminaries/Chapter_main.html
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Sebastien.
> > > >
> > > >
> > > > On 09/21/2011 10:32 PM, Frankie Li wrote:
> > > > > Hi all,
> > > > >
> > > > > I was wondering if anyone has seen the following problem. The
> > > > > version of
> > > > > CGAL I have been using primarily are 3.5.1 and 3.6.
> > > > >
> > > > >
> > > > > In the AABB_tree example ("AABB_triangle_3_example.cpp"), if we add an
> > > > > include for "exact predicates inexact constructions kernel in front of
> > > > > the <CGAL/AABB_traits.h> include:
> > > > >
> > > > >
> > > > > -----------------------------------------------------------------
> > > > >
> > > > > #include <iostream>
> > > > > #include <list>
> > > > >
> > > > > #include <CGAL/AABB_tree.h> // must be inserted before kernel
> > > > > #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
> > > > > //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ line added
> > > > > #include <CGAL/AABB_traits.h>
> > > > > #include <CGAL/AABB_triangle_primitive.h>
> > > > >
> > > > > #include <CGAL/Simple_cartesian.h>
> > > > > -----------------------------------------------------------------
> > > > >
> > > > >
> > > > > I would end up with the following error:
> > > > >
> > > > > function_objects.h:1869: error: no matching function for call to
> > > > > 'do_intersect(const CGAL::Sphere_3<CGAL::Simple_cartesian<double> >&,
> > > > > const CGAL::Bbox_3&, CGAL::Simple_cartesian<double>)'
> > > > >
> > > > >
> > > > > If I were to move the new line to *after* <CGAL/AABB_traits.h>
> > > > >
> > > > >
> > > > > -----------------------------------------------------------------
> > > > >
> > > > > #include <iostream>
> > > > > #include <list>
> > > > >
> > > > > #include <CGAL/AABB_tree.h> // must be inserted before kernel
> > > > >
> > > > > #include <CGAL/AABB_traits.h>
> > > > > #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
> > > > > //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ line added
> > > > > #include <CGAL/AABB_triangle_primitive.h>
> > > > >
> > > > > #include <CGAL/Simple_cartesian.h>
> > > > > -----------------------------------------------------------------
> > > > >
> > > > >
> > > > > The problem goes away. Am I not supposed to have the two files
> > > > > included
> > > > > at the same time? The version of gcc I'm using is gcc 4.4.5.
> > > > >
> > > > >
> > > > > Thanks,
> > > > >
> > > > >
> > > > > Frankie