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Diffstat (limited to 'src/Bottleneck_distance/include/gudhi/CGAL/Splitters.h')
| -rw-r--r-- | src/Bottleneck_distance/include/gudhi/CGAL/Splitters.h | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/src/Bottleneck_distance/include/gudhi/CGAL/Splitters.h b/src/Bottleneck_distance/include/gudhi/CGAL/Splitters.h deleted file mode 100644 index e58a593d..00000000 --- a/src/Bottleneck_distance/include/gudhi/CGAL/Splitters.h +++ /dev/null @@ -1,313 +0,0 @@ -// Copyright (c) 2002-2011 Utrecht University (The Netherlands). -// All rights reserved. -// -// This file is part of CGAL (www.cgal.org). -// 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. -// -// Licensees holding a valid commercial license may use this file in -// accordance with the commercial license agreement provided with the software. -// -// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE -// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. -// -// $URL$ -// $Id$ -// -// -// Author(s) : Hans Tangelder (<hanst@cs.uu.nl>) - -// Defines rules used for constructing a split node. That is, it implements, -// in several ways, the concept -// Boxtree_splitter<FT>. - -#ifndef CGAL_SPLITTERS_H -#define CGAL_SPLITTERS_H - -#include <CGAL/Point_container.h> -#include <CGAL/Plane_separator.h> - -namespace CGAL { - - template <class FT> - class Splitter_base { - private: - unsigned int the_bucket_size; - FT the_aspect_ratio; - - public: - //default bucket_size should be 10 - Splitter_base(unsigned int bucket_size = 10, - FT aspect_ratio = FT(3)) - : the_bucket_size(bucket_size), - the_aspect_ratio(aspect_ratio) - {} - - FT - aspect_ratio() const - { - return the_aspect_ratio; - } - - unsigned int - bucket_size() const - { - return the_bucket_size; - } - - }; - - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Median_of_max_spread - : public Splitter_base<typename SearchTraits::FT> - { - - typedef Splitter_base<typename SearchTraits::FT> Base; - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - Median_of_max_spread() - : Base() - {} - - Median_of_max_spread(unsigned int bucket_size) - : Base(bucket_size) - {} - - void - operator() (Separator& sep, - Container& c0, - Container& c1) const - { - sep=Separator(c0.max_tight_span_coord(),FT(0)); - sep.set_cutting_value(c0.median(sep.cutting_dimension())); - c0.split(c1,sep,true); - } - }; - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Fair - : public Splitter_base<typename SearchTraits::FT> - { - - typedef Splitter_base<typename SearchTraits::FT> Base; - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - Fair() - : Base() - {} - - Fair(unsigned int bucket_size, - FT aspect_ratio=FT(3)) - : Base(bucket_size, aspect_ratio) - {} - - void - operator()(Separator& sep, Container& c0, Container& c1) const - { - // find legal cut with max spread - sep=Separator(c0.max_tight_span_coord_balanced(this->aspect_ratio()), - FT(0)); - sep.set_cutting_value(c0.balanced_fair(sep.cutting_dimension(), - this->aspect_ratio())); - c0.split(c1,sep); - } - }; - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Sliding_fair - : public Splitter_base<typename SearchTraits::FT> - { - - typedef Splitter_base<typename SearchTraits::FT> Base; - - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - Sliding_fair() - : Base() - {} - - Sliding_fair(unsigned int bucket_size, - FT aspect_ratio=FT(3)) - : Base(bucket_size, aspect_ratio) - {} - - void - operator() (Separator& sep, Container& c0, Container& c1) const - { - // find legal cut with max spread - - sep = Separator(c0.max_tight_span_coord_balanced(this->aspect_ratio()), - FT(0)); - - sep.set_cutting_value(c0.balanced_sliding_fair(sep.cutting_dimension(), - this->aspect_ratio())); - c0.split(c1,sep,true); - } - }; - - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Sliding_midpoint - : public Splitter_base<typename SearchTraits::FT> - { - - typedef Splitter_base<typename SearchTraits::FT> Base; - - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - Sliding_midpoint() - : Base() - {} - - Sliding_midpoint(unsigned int bucket_size) - : Base(bucket_size) - {} - - void - operator()(Separator& sep, Container& c0, Container& c1) const - { - CGAL_assertion(c0.is_valid()); - CGAL_assertion(c1.is_valid()); - int cutdim = c0.max_span_coord(); - - //Bugfix: avoid linear tree in degenerated cases - if(c0.tight_bounding_box().min_coord(cutdim) != c0.tight_bounding_box().max_coord(cutdim)){ - sep = Separator(cutdim, - (c0.max_span_upper() + c0.max_span_lower())/FT(2)); - } - else{ - cutdim = c0.max_tight_span_coord(); - sep = Separator(cutdim, - (c0.max_tight_span_upper() + c0.max_tight_span_lower())/FT(2)); - } - - FT max_span_lower = - c0.tight_bounding_box().min_coord(cutdim); - - CGAL_assertion(max_span_lower >= c0.bounding_box().min_coord(cutdim)); - FT max_span_upper = - c0.tight_bounding_box().max_coord(cutdim); - - CGAL_assertion(max_span_upper <= c0.bounding_box().max_coord(cutdim)); - if (max_span_upper <= sep.cutting_value()) { - sep.set_cutting_value(max_span_upper); - }; - if (max_span_lower >= sep.cutting_value()) { - sep.set_cutting_value(max_span_lower); - }; - c0.split(c1,sep,true); - } - }; - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Median_of_rectangle - : public Splitter_base<typename SearchTraits::FT> - { - - typedef Splitter_base<typename SearchTraits::FT> Base; - - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - - Median_of_rectangle() - : Base() - {} - - Median_of_rectangle(unsigned int bucket_size) - : Base(bucket_size) - {} - - void - operator() (Separator& sep, Container& c0, Container& c1) const - { - sep = Separator(c0.max_span_coord(),FT(0)); - sep.set_cutting_value(c0.median(sep.cutting_dimension())); - c0.split(c1,sep,true); - } - }; - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Midpoint_of_max_spread - : public Splitter_base<typename SearchTraits::FT> - { - typedef Splitter_base<typename SearchTraits::FT> Base; - - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - - Midpoint_of_max_spread() - : Base() - {} - - Midpoint_of_max_spread(unsigned int bucket_size) - : Base(bucket_size) - {} - - void - operator()(Separator& sep, Container& c0, Container& c1) const - { - sep = Separator(c0.max_tight_span_coord(), - (c0.max_tight_span_upper() + c0.max_tight_span_lower())/FT(2)); - c0.split(c1,sep); - } - }; - - template <class SearchTraits, - class Separator_= Plane_separator<typename SearchTraits::FT> > - class Midpoint_of_rectangle - : public Splitter_base<typename SearchTraits::FT> - { - - typedef Splitter_base<typename SearchTraits::FT> Base; - public: - typedef typename SearchTraits::FT FT; - typedef Point_container<SearchTraits> Container; - typedef Separator_ Separator; - - - Midpoint_of_rectangle() - : Base() - {} - - Midpoint_of_rectangle(unsigned int bucket_size) - : Base(bucket_size) - {} - - void - operator()(Separator& sep, Container& c0, Container& c1) const - { - sep = Separator(c0.max_span_coord(), - (c0.max_span_upper() + c0.max_span_lower())/FT(2)); - c0.split(c1,sep); - } - - }; - -} // namespace CGAL -#endif // CGAL_SPLITTERS |