CGAL users discussion list

[Frankie Li <>]

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