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test_geometry_intersection.cc
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test_geometry_intersection.cc
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/**
* @file test_geometry_intersection.cc
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @date creation: Fri Feb 27 2015
* @date last modification: Thu Mar 5 2015
*
* @brief Tests the intersection module
*
* @section LICENSE
*
* Copyright (©) 2015 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh_geom_factory.hh"
#include "tree_type_helper.hh"
#include "geom_helper_functions.hh"
#include "mesh_geom_common.hh"
#include <iostream>
#include <iterator>
#include <CGAL/Exact_spherical_kernel_3.h>
#include <CGAL/intersections.h>
#include <CGAL/Spherical_kernel_intersections.h>
/* -------------------------------------------------------------------------- */
using namespace akantu;
typedef Cartesian K;
typedef IntersectionTypeHelper<TreeTypeHelper<Triangle<K>, K>, K::Segment_3>::intersection_type result_type;
typedef Spherical SK;
typedef boost::variant<std::pair<SK::Circular_arc_point_3, UInt> > sk_inter_res;
/*typedef CGAL::cpp11::result_of<SK::Intersect_3(SK::Line_arc_3,
SK::Sphere_3,
std::back_insert_iterator<
std::list<sk_inter_res> >)>::type sk_res;*/
typedef std::pair<SK::Circular_arc_point_3, UInt> pair_type;
/* -------------------------------------------------------------------------- */
int main (int argc, char * argv[]) {
initialize("", argc, argv);
debug::setDebugLevel(dblWarning);
Mesh mesh(2);
mesh.read("test_geometry_triangle.msh");
MeshGeomFactory<2, _triangle_3, Triangle<K>, K> factory(mesh);
factory.constructData();
const TreeTypeHelper<Triangle<K>, K>::tree & tree = factory.getTree();
K::Point_3 a(0., 0.25, 0.), b(1., 0.25, 0.);
K::Segment_3 line(a, b);
K::Point_3 begin(a), intermediate(0.25, 0.25, 0.), end(0.75, 0.25, 0.);
K::Segment_3 result_0(begin, intermediate), result_1(intermediate, end);
std::list<result_type> list_of_intersections;
tree.all_intersections(line, std::back_inserter(list_of_intersections));
const result_type & intersection_0 = list_of_intersections.back();
const result_type & intersection_1 = list_of_intersections.front();
if (!intersection_0 || !intersection_1)
return EXIT_FAILURE;
/// *-> first is the intersection ; *->second is the primitive id
if (const K::Segment_3 * segment = boost::get<K::Segment_3>(&(intersection_0->first))) {
if (!compareSegments(*segment, result_0)) {
return EXIT_FAILURE;
}
} else return EXIT_FAILURE;
if (const K::Segment_3 * segment = boost::get<K::Segment_3>(&(intersection_1->first))) {
if (!compareSegments(*segment, result_1)) {
return EXIT_FAILURE;
}
} else return EXIT_FAILURE;
SK::Sphere_3 sphere(SK::Point_3(0, 0, 0), 1.);
SK::Segment_3 seg(SK::Point_3(0, 0, 0), SK::Point_3(1., 1., 1.));
SK::Line_arc_3 arc(seg);
std::list<sk_inter_res> s_results;
CGAL::intersection(arc, sphere, std::back_inserter(s_results));
if (pair_type * pair = boost::get<pair_type>(&s_results.front())) {
if (!comparePoints(pair->first, SK::Circular_arc_point_3(1.0 / std::sqrt(3.),
1.0 / std::sqrt(3.),
1.0 / std::sqrt(3.))))
return EXIT_FAILURE;
} else return EXIT_FAILURE;
MeshGeomFactory<2, _triangle_3, Line_arc<SK>, SK> Sfactory(mesh);
Sfactory.constructData();
finalize();
return EXIT_SUCCESS;
}

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