mirror of https://github.com/CGAL/cgal
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
#include <CGAL/Simple_cartesian.h>
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#include <CGAL/Kd_tree.h>
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#include <CGAL/point_generators_2.h>
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#include <CGAL/algorithm.h>
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#include <CGAL/Fuzzy_iso_box.h>
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#include <CGAL/Search_traits_2.h>
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typedef CGAL::Simple_cartesian<double> K;
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typedef K::Point_2 Point_d;
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typedef CGAL::Random_points_in_square_2<Point_d> Random_points_iterator;
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typedef CGAL::Counting_iterator<Random_points_iterator> N_Random_points_iterator;
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typedef CGAL::Search_traits_2<K> Traits;
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typedef CGAL::Kd_tree<Traits> Tree;
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typedef CGAL::Fuzzy_iso_box<Traits> Fuzzy_iso_box;
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int main()
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{
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const int N = 1000;
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std::list<Point_d> points;
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points.push_back(Point_d(0,0));
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Tree tree;
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Random_points_iterator rpg;
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for(int i = 0; i < N; i++)
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tree.insert(*rpg++);
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std::list<Point_d> result;
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// define range query
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Point_d p(0.2, 0.2);
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Point_d q(0.7, 0.7);
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// Searching an exact range
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// using default value 0.0 for epsilon fuzziness parameter
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Fuzzy_iso_box exact_range(p,q);
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tree.search( std::back_inserter( result ), exact_range);
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std::cout << "The points in the box [0.2, 0.7]^2 are: " << std::endl;
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std::copy (result.begin(), result.end(), std::ostream_iterator<Point_d>(std::cout,"\n") );
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std::cout << std::endl;
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result.clear();
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// Searching a fuzzy range
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// using value 0.1 for fuzziness parameter
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Fuzzy_iso_box approximate_range(p, q, 0.1);
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tree.search(std::back_inserter( result ), approximate_range);
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std::cout << "The points in the fuzzy box [[0.1, 0.3], [0.6, 0.8]]^2 are: " << std::endl;
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std::copy (result.begin(), result.end(), std::ostream_iterator<Point_d>(std::cout,"\n") );
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std::cout << std::endl;
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return 0;
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}
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