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Diffstat (limited to 'src/GudhUI/utils/Rips_builder.h')
-rw-r--r-- | src/GudhUI/utils/Rips_builder.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/GudhUI/utils/Rips_builder.h b/src/GudhUI/utils/Rips_builder.h new file mode 100644 index 00000000..9484f9ab --- /dev/null +++ b/src/GudhUI/utils/Rips_builder.h @@ -0,0 +1,56 @@ +/* + * Rips_builder.h + * + * Created on: Sep 10, 2014 + * Author: dsalinas + */ + +#ifndef RIPS_BUILDER_H_ +#define RIPS_BUILDER_H_ + +#include <boost/iterator/iterator_facade.hpp> + +#include "utils/UI_utils.h" +#include "model/Complex_typedefs.h" +#include <CGAL/Euclidean_distance.h> + +#include <CGAL/Orthogonal_k_neighbor_search.h> +#include <CGAL/Search_traits_d.h> + +template<typename SkBlComplex> class Rips_builder{ +private: + SkBlComplex& complex_; +public: + + /** + * @brief Modify complex to be the Rips complex + * of its points with offset alpha. + */ + Rips_builder(SkBlComplex& complex,double alpha):complex_(complex){ + complex.keep_only_vertices(); + if (alpha<=0) return; + compute_edges(alpha); + } + +private: + + + double squared_eucl_distance(const Point& p1,const Point& p2) const{ + return Geometry_trait::Squared_distance_d()(p1,p2); + } + + void compute_edges(double alpha){ + auto vertices = complex_.vertex_range(); + for(auto p = vertices.begin(); p!= vertices.end(); ++p){ + std::cout << *p << " "; std::cout.flush(); + for (auto q = p; ++q != vertices.end(); /**/) + if (squared_eucl_distance(complex_.point(*p),complex_.point(*q)) < 4*alpha*alpha) + complex_.add_edge(*p,*q); + } + std::cout << std::endl; + } + +}; + + +#endif /* RIPS_BUILDER_H_ */ |