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rAKA/extra_packages/igfem/test/test_geometry/test_spherical_kernel.cc
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test_spherical_kernel.cc
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/**
* @file test_.cc
*
* @author Clement Roux-Langlois <clement.roux@epfl.ch>
*
* @date creation: Fri Mar 13 2015
* @date last modification: Tue june 16 2015
*
* @brief Tests the interface mesh generation
*
*
* 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 <CGAL/Lazy_exact_nt.h>
#include <CGAL/MP_Float.h>
#include <CGAL/Quotient.h>
#include <CGAL/Algebraic_kernel_for_spheres_2_3.h>
#include <CGAL/Cartesian.h>
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Spherical_kernel_3.h>
/* -------------------------------------------------------------------------- */
int main() {
// typedef CGAL::Lazy_exact_nt<CGAL::Quotient<CGAL::MP_Float> > NT;
typedef CGAL::Quotient<CGAL::MP_Float> NT;
// typedef double NT;
typedef CGAL::Spherical_kernel_3<CGAL::Simple_cartesian<NT>,
CGAL::Algebraic_kernel_for_spheres_2_3<NT>>
Spherical;
// CGAL::Point_3<Spherical> b(0.3070532930016993, 0.3958272423848058, 0.),
// c(0.480062080085834, -0.1988482243531368, 0.);
double xb = 0.3, yb = 0.4, zb = 0., xc = 0.5, yc = -0.2, zc = 0.;
CGAL::Point_3<Spherical> b(xb, yb, zb), c(xc, yc, zc);
CGAL::Line_3<Spherical> l2(b, c);
CGAL::Line_arc_3<Spherical> s2(l2, b, c);
Spherical::Sphere_3 sphere(Spherical::Point_3(0.4, 0, 0), 0.3 * 0.3);
typedef std::pair<Spherical::Circular_arc_point_3, int> pair_type;
typedef boost::variant<pair_type> sk_inter_res;
std::list<sk_inter_res> s_results;
CGAL::intersection(s2, sphere, std::back_inserter(s_results));
if (s_results.size() == 1) { // just one point
if (pair_type * pair = boost::get<pair_type>(&s_results.front())) {
if (pair->second == 1) { // not a point tangent to the sphere
Spherical::Circular_arc_point_3 arc_point = pair->first;
std::cout << " x = " << arc_point.x() << ", y = " << arc_point.y()
<< std::endl;
double xint, yint;
xint = to_double(arc_point.x());
yint = to_double(arc_point.y());
std::cout << "x = " << xint << ", y = " << yint << std::endl;
}
}
}
return EXIT_SUCCESS;
}
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