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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): Siargey Kachanovich
*
* Copyright (C) 2016 INRIA (France)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_MODULE "simple_witness_complex"
#include <boost/test/unit_test.hpp>
#include <boost/mpl/list.hpp>
#include <CGAL/Epick_d.h>
#include <gudhi/Simplex_tree.h>
#include <gudhi/Witness_complex.h>
#include <gudhi/Strong_witness_complex.h>
#include <iostream>
#include <ctime>
#include <vector>
typedef Gudhi::Simplex_tree<> Simplex_tree;
typedef std::vector< Vertex_handle > typeVectorVertex;
typedef CGAL::Epick_d<CGAL::Dynamic_dimension_tag> Kernel;
typedef typename Kernel::FT FT;
typedef typename Kernel::Point_d Point_d;
typedef Gudhi::witness_complex::Witness_complex<Kernel> WitnessComplex;
typedef Gudhi::witness_complex::Strong_witness_complex<Kernel> StrongWitnessComplex;
/* All landmarks and witnesses are taken on the grid in the following manner.
LWLWL
WW.WW
L...L
WW.WW
LWLWL
Witness complex consists of 8 vertices, 12 edges and 4 triangles
*/
BOOST_AUTO_TEST_CASE(simple_witness_complex) {
Simplex_tree complex, relaxed_complex, strong_relaxed_complex;
std::vector<Point_d> witnesses, landmarks;
landmarks.push_back(Point_d(std::vector<FT>{-2,-2}));
landmarks.push_back(Point_d(std::vector<FT>{-2, 0}));
landmarks.push_back(Point_d(std::vector<FT>{-2, 2}));
landmarks.push_back(Point_d(std::vector<FT>{ 0,-2}));
landmarks.push_back(Point_d(std::vector<FT>{ 0, 2}));
landmarks.push_back(Point_d(std::vector<FT>{ 2,-2}));
landmarks.push_back(Point_d(std::vector<FT>{ 2, 0}));
landmarks.push_back(Point_d(std::vector<FT>{ 2, 2}));
witnesses.push_back(Point_d(std::vector<FT>{-2,-1}));
witnesses.push_back(Point_d(std::vector<FT>{-2, 1}));
witnesses.push_back(Point_d(std::vector<FT>{-1,-2}));
witnesses.push_back(Point_d(std::vector<FT>{-1,-1}));
witnesses.push_back(Point_d(std::vector<FT>{-1, 1}));
witnesses.push_back(Point_d(std::vector<FT>{-1, 2}));
witnesses.push_back(Point_d(std::vector<FT>{ 1,-2}));
witnesses.push_back(Point_d(std::vector<FT>{ 1,-1}));
witnesses.push_back(Point_d(std::vector<FT>{ 1, 1}));
witnesses.push_back(Point_d(std::vector<FT>{ 1, 2}));
witnesses.push_back(Point_d(std::vector<FT>{ 2,-1}));
witnesses.push_back(Point_d(std::vector<FT>{ 2, 1}));
WitnessComplex witness_complex(landmarks.begin(),
landmarks.end(),
witnesses.begin(),
witnesses.end());
witness_complex.create_complex(complex, 0);
std::cout << "complex.num_simplices() = " << complex.num_simplices() << std::endl;
BOOST_CHECK(complex.num_simplices() == 24);
witness_complex.create_complex(relaxed_complex, 8.01);
std::cout << "relaxed_complex.num_simplices() = " << relaxed_complex.num_simplices() << std::endl;
BOOST_CHECK(relaxed_complex.num_simplices() == 239);
StrongWitnessComplex strong_witness_complex(landmarks.begin(),
landmarks.end(),
witnesses.begin(),
witnesses.end());
strong_witness_complex.create_complex(strong_relaxed_complex, 9.1);
std::cout << "strong_relaxed_complex.num_simplices() = " << strong_relaxed_complex.num_simplices() << std::endl;
BOOST_CHECK(strong_relaxed_complex.num_simplices() == 239);
}
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