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CGAL 4.5 - dD Spatial Searching
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CGAL 4.5 - dD Spatial Searching
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#include <CGAL/Point_container.h>
A custom container for points used to build a tree.
Each point container holds the points from a rectangle associated with a node of the tree. In the remainder of this reference page this rectangle is called the associated rectangle. Provides a method to split a container and a number of methods to support the implementation of splitting rules.
| Traits | must be model of the concept SearchTraits, for example Simple_cartesian<double>. |
SearchTraits SpatialSeparator Related Functions | |
(Note that these are not member functions.) | |
| template<class Traits > | |
| std::ostream & | operator<< (std::ostream &s, Point_container< Traits > c) |
Prints the point container c to the output stream s and returns s. | |
Types | |
| typedef Traits::FT | FT |
| Number type. | |
| typedef Traits::Point_d | Point_d |
| Point type. | |
| typedef unspecified_type | iterator |
An iterator with value type Point_d*. | |
| typedef unspecified_type | const_iterator |
A const iterator with value type const Point_d*. | |
Creation | |
| Point_container (int d) | |
Construct an empty container for storing d-dimensional points. | |
| template<class InputIterator > | |
| Point_container (int d, InputIterator begin, InputIterator end) | |
Construct the container of d-dimensional points of type Point_d given by the iterator sequence [begin, end). | |
Operations | |
| template<class SpatialSeparator > | |
| void | split (Point_container< Traits > &c2, SpatialSeparator sep, bool sliding=false) |
Given an empty container c2 with the same dimension as c, splits c into cand c2 using the separator sep. More... | |
| void | swap (Point_container< Traits > &c2) |
Swap the contents of c and c2 | |
| void | recompute_tight_bounding_box () |
| Recompute the bounding box of the points in the container. | |
| iterator | begin () |
| Returns an iterator to a pointer to the first point. | |
| iterator | end () |
| Returns the appropriate past-the-end iterator. | |
| const_iterator | begin () const |
| Returns a const iterator to a pointer to the first point. | |
| const_iterator | end () const |
| Returns the appropriate past-the-end const iterator. | |
| int | dimension () const |
| Returns the dimension. | |
| int | built_coordinate () const |
| Returns coordinate for which the pointer list is built. | |
| int | max_span_coord () const |
| Returns coordinate where the associated rectangle has maximal span. | |
| int | max_tight_span_coord () const |
| Returns coordinate where the point coordinates have maximal span. | |
| FT | max_span_lower () const |
Returns lower value of the interval corresponding to max_span_coord(). | |
| FT | max_tight_span_lower () const |
Returns lower value of the interval corresponding to max_tight_span_coord(). More... | |
| FT | max_span_upper () const |
Returns upper value of the interval corresponding to max_span_coord(). | |
| FT | max_span_upper_without_dim (int d) const |
Returns upper value of the interval over all dimensions without taking dimension d into account. | |
| FT | max_tight_span_upper () const |
Returns upper value of the interval corresponding to max_tight_span_coord(). | |
| FT | max_spread () const |
Returns the size of the interval corresponding to max_span_coord(). | |
| FT | max_tight_spread () const |
Returns the size of the interval corresponding to max_tight_span_coord(). | |
| FT | median (int split_coord) const |
Returns the median value of the points stored in the container for dimension split_coord. | |
| const Kd_tree_rectangle< Traits > & | bounding_box () const |
| Returns the associated rectangle. | |
| const Kd_tree_rectangle< Traits > & | tight_bounding_box () |
| Returns the bounding box of the items in associated rectangle. | |
| int | max_tight_span_coord_balanced (FT aspect_ratio) const |
Returns the dimension with the maximal point spread, for which after fair splitting the ratio of the length of the longest side and the smallest side of the bounding box of the items in associated rectangle, does not exceed aspect_ratio. | |
| FT | balanced_fair (int d, FT aspect_ratio) |
| Returns the splitting value for fair splitting. | |
| FT | balanced_sliding_fair (int d, FT aspect_ratio) |
| Returns the splitting value for sliding fair splitting. | |
| std::size_t | size () const |
| Returns the number of points stored. | |
| bool | empty () const |
| Returns true if no points are present, false otherwise. | |
| FT CGAL::Point_container< Traits >::max_tight_span_lower | ( | ) | const |
Returns lower value of the interval corresponding to max_tight_span_coord().
That is, the smallest max_tight_span_coord()-th coordinate of the points in c.
| void CGAL::Point_container< Traits >::split | ( | Point_container< Traits > & | c2, |
| SpatialSeparator | sep, | ||
| bool | sliding = false |
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Given an empty container c2 with the same dimension as c, splits c into cand c2 using the separator sep.
If sliding is true after splitting each container contains at least one point. Container c should contain at least two points.
1.8.4