CGAL 6.1.1 - 2D Regularized Boolean Set-Operations

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CGAL::Polygon_set_2< Kernel, Container, Dcel > Class Template Reference
Reference Manual

`#include <CGAL/Polygon_set_2.h>`

## Inherits from

CGAL::General_polygon_set_2< Gps_segment_traits_2< Kernel, Container > >.

## Definition

template<typename Kernel, typename Container, typename Dcel>
class CGAL::Polygon_set_2< Kernel, Container, Dcel >

The class `Polygon_set_2` represents sets of linear polygons with holes.

The first two template parameters (`Kernel` and `Container`) are used to instantiate the type `Polygon_2<Kernel,Container>`. This type is used to represent the outer boundary of every set member and the boundaries of all holes of every set member.

The third template parameter `Dcel` must be instantiated with a model of the concept `GeneralPolygonSetDcel`. It is instantiated by default with the type `Gps_default_dcel<Traits>`. You can override this default, with a different DCEL class, typically an extension of the `Gps_default_dcel` class template. Overriding the default is necessary only if you intend to obtain the underlying internal arrangement and process it further.

See also
  `General_polygon_set_2`
  `Gps_segment_traits_2`

Examples
  Boolean_set_operations_2/draw_polygon_set.cpp, and Boolean_set_operations_2/sequence.cpp.

## Additional Inherited Members
Public Types inherited from CGAL::General_polygon_set_2< Gps_segment_traits_2< Kernel, Container > >
typedef unspecified_type | Traits_2
| the traits class in use.
typedef unspecified_type | Polygon_2
| the general polygon type.
typedef unspecified_type | Polygon_with_holes_2
| the general polygon with holes type.
typedef unspecified_type | Size
| number of polygons with holes size type.
typedef unspecified_type | Arrangement_2
| the arrangement type used internally.
Public Member Functions inherited from CGAL::General_polygon_set_2< Gps_segment_traits_2< Kernel, Container > >
| General_polygon_set_2 ()
| default constructor; constructs an empty set of polygons `gps` represented by an empty arrangement.
| General_polygon_set_2 (const Self &other)
| copy constructor.
| General_polygon_set_2 (const Gps_segment_traits_2< Kernel, Container > &traits)
| constructs an empty set of polygons that uses the given `traits` object for performing the geometric operations.
| General_polygon_set_2 (const Polygon_2 &pgn)
| constructs a set of polygons that consists of the single polygon `pgn`.
| General_polygon_set_2 (const Polygon_with_holes_2 &pgn_with_holes)
| constructs a set of polygons that consists of the single polygon with holes `pgn_with_holes`.
| General_polygon_set_2 (const Polygon_2 &pgn, const Gps_segment_traits_2< Kernel, Container > &traits)
| constructs a set of polygons that uses the given traits object and consists of the single polygon `pgn`.
| General_polygon_set_2 (const Polygon_with_holes_2 &pgn_with_holes, const Gps_segment_traits_2< Kernel, Container > &traits)
| constructs a set of polygons that uses the given traits object and consists of the single polygon with holes `pgn_with_holes`.
OutputIterator | polygons_with_holes (OutputIterator out)
| obtains the polygons with holes represented by `gps`.
Size | number_of_polygons_with_holes () const
| returns the total number of general polygons represented by `gps`.
bool | is_empty () const
| returns `true` if `gps` represents an empty set.
bool | is_plane () const
| returns `true` if `gps` represents the entire plane.
Gps_segment_traits_2< Kernel, Container > & | traits () const
| obtains an instance of the traits.
const Arrangement_2 & | arrangement () const
| obtains the arrangement data structure that internally represents the general-polygon set.
void | clear ()
| clears `gps`.
void | insert (Polygon_2 &pgn)
| inserts `pgn` into `gps`.
void | insert (Polygon_with_holes_2 &pgn_with_holes)
| inserts `pgn_with_holes` into `gps`.
void | insert (InputIterator begin, InputIterator end)
| inserts the range of polygons (or polygons with holes) into `gps`.
void | insert (InputIterator1 pgn_begin, InputIterator1 pgn_end, InputIterator2 pgn_with_holes_begin, InputIterator2 pgn_with_holes_end)
| inserts the two ranges of polygons and polygons with holes into `gps`.
void | complement ()
| computes the complement of `gps`.
void | complement (const Polygon_set_2 &other)
| computes the complement of `other`.
void | intersection (const General_polygon_set_2 &other)
| computes the intersection of `gps` and `other`.
void | intersection (const Polygon_2 &pgn)
| computes the intersection of `gps` and `pgn`.
void | intersection (const Polygon_with_holes_2 &pgn)
| computes the intersection of `gps` and `pgn`.
void | intersection (InputIterator begin, InputIterator end)
| computes the intersection of a collection of point sets.
void | intersection (InputIterator1 pgn_begin, InputIterator1 pgn_end, InputIterator2 pgn_with_holes_begin, InputIterator2 pgn_with_holes_end)
| computes the intersection of a collection of point sets.
void | join (const General_polygon_set_2 &other)
| computes the union of `gps` and `other`.
void | join (const Polygon_2 &pgn)
| computes the union of `gps` and `pgn`.
void | join (const Polygon_with_holes_2 &pgn)
| computes the union of `gps` and `pgn`.
void | join (InputIterator begin, InputIterator end)
| computes the union of the polygons (or polygons with holes) in the given range and the point set represented by `gps`.
void | join (InputIterator1 pgn_begin, InputIterator1 pgn_end, InputIterator2 pgn_with_holes_begin, InputIterator2 pgn_with_holes_end)
| computes the union of the polygons and polygons with holes in the given two ranges and the point set represented by `gps`.
void | difference (const General_polygon_set_2 &other)
| computes the difference between `gps` and `other`.
void | difference (const Polygon_2 &pgn)
| computes the difference between `gps` and `pgn`.
void | difference (const Polygon_with_holes_2 &pgn)
| computes the difference between `gps` and `pgn`.
void | symmetric_difference (const General_polygon_set_2 &other)
| computes the symmetric difference between `gps` and `other`.
void | symmetric_difference (const Polygon_2 &pgn)
| computes the symmetric difference between `gps` and `pgn`.
void | symmetric_difference (const Polygon_with_holes_2 &pgn)
| computes the symmetric difference between `gps` and `pgn`.
void | symmetric_difference (InputIterator begin, InputIterator end)
| computes the symmetric difference (xor) of a collection of point sets.
void | symmetric_difference (InputIterator1 pgn_begin, InputIterator1 pgn_end, InputIterator2 pgn_with_holes_begin, InputIterator2 pgn_with_holes_end)
| computes the symmetric difference (xor) of a collection of point sets.
void | intersection (const General_polygon_set_2 &gps1, const General_polygon_set_2 &gps2)
| computes the intersection of `gps1` and `gps2`.
void | join (const General_polygon_set_2 &gps1, const General_polygon_set_2 &gps2)
| computes the union of `gps1` and `gps2`.
void | difference (const General_polygon_set_2 &gps1, const General_polygon_set_2 &gps2)
| computes the difference between `gps1` and `gps2`.
void | symmetric_difference (const General_polygon_set_2 &gps1, const General_polygon_set_2 &gps2)
| computes the symmetric difference between `gps1` and `gps2`.
bool | do_intersect (const General_polygon_set_2 &other)
| returns `true` if `gps` and `other` intersect in their interior, and `false` otherwise.
bool | do_intersect (const Polygon_2 &pgn)
| returns `true` if `gps` and `pgn` intersect in their interior, and `false` otherwise.
bool | do_intersect (const Polygon_with_holes_2 &pgn)
| returns `true` if `gps` and `pgn` intersect in their interior, and `false` otherwise.
void | do_intersect (InputIterator begin, InputIterator end)
| returns `true` if the interior of the point sets in a collection intersect, and `false` otherwise.
void | do_intersect (InputIterator1 pgn_begin, InputIterator1 pgn_end, InputIterator2 pgn_with_holes_begin, InputIterator2 pgn_with_holes_end)
| returns `true` if the interior of the point sets in a collection intersect, and `false` otherwise.
bool | locate (const Point_2 &p, Polygon_with_holes_2 &pgn)
| obtains a polygon with holes that contains the query point `p`, if exists, through `pgn`, and returns `true`.
Oriented_side | oriented_side (const Point_2 &q)
| returns either the constant `ON_ORIENTED_BOUNDARY`, `ON_POSITIVE_SIDE`, or `ON_NEGATIVE_SIDE`, iff `p` lies on the boundary, properly on the positive side, or properly on the negative side of `gps` respectively.
Oriented_side | oriented_side (const General_polygon_set_2 &other)
| returns either the constant `ON_NEGATIVE_SIDE`, `ON_ORIENTED_BOUNDARY`, or `ON_POSITIVE_SIDE`, iff `other` and `gps` are completely disjoint, in contact, or intersect in their interior, respectively.
Oriented_side | oriented_side (const Polygon_2 &pgn)
| returns either the constant `ON_NEGATIVE_SIDE`, `ON_ORIENTED_BOUNDARY`, or `ON_POSITIVE_SIDE`, iff `pgn` and `gps` are completely disjoint, in contact, or intersect in their interior, respectively.
Oriented_side | oriented_side (const Polygon_with_holes_2 &pgn)
| returns either the constant `ON_NEGATIVE_SIDE`, `ON_ORIENTED_BOUNDARY`, or `ON_POSITIVE_SIDE`, iff `pgn` and `gps` are completely disjoint, in contact, or intersect in their interior, respectively.
bool | is_valid () const
| returns `true` if `gps` represents a valid point set.