MySQL  8.0.28
Source Code Documentation
simplify_functor.h
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1 #ifndef SQL_GIS_SIMPLIFY_FUNCTOR_H_INCLUDED
2 #define SQL_GIS_SIMPLIFY_FUNCTOR_H_INCLUDED
3 
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25 
26 /// @file
27 ///
28 /// This file declares the simplify functor interface.
29 ///
30 /// The functor is not intended for use directly by MySQL code. It should be
31 /// used indirectly through the gis::simplify() function.
32 ///
33 /// @see gis::simplify
34 
35 #include <memory> // std::unique_ptr
36 
37 #include <boost/geometry.hpp>
38 
39 #include "sql/gis/functor.h"
40 #include "sql/gis/geometries.h"
41 
42 namespace gis {
43 
44 /// Simplify functor that calls Boost.Geometry with the correct parameter types.
45 ///
46 /// The functor throws exceptions and is therefore only intended used to
47 /// implement simplify or other geographic functions. It should not be used
48 /// directly by other MySQL code.
49 class Simplify : public Unary_functor<std::unique_ptr<Geometry>> {
50  private:
52 
53  public:
54  Simplify(double max_distance) : m_max_distance(max_distance) {}
55  std::unique_ptr<Geometry> operator()(const Geometry &g) const override;
56  std::unique_ptr<Geometry> eval(const Geometry &g) const;
57  std::unique_ptr<Geometry> eval(const Cartesian_point &g) const;
58  std::unique_ptr<Geometry> eval(const Cartesian_linestring &g) const;
59  std::unique_ptr<Geometry> eval(const Cartesian_polygon &g) const;
60  std::unique_ptr<Geometry> eval(const Cartesian_geometrycollection &g) const;
61  std::unique_ptr<Geometry> eval(const Cartesian_multipoint &g) const;
62  std::unique_ptr<Geometry> eval(const Cartesian_multilinestring &g) const;
63  std::unique_ptr<Geometry> eval(const Cartesian_multipolygon &g) const;
64 };
65 
66 } // namespace gis
67 
68 #endif // SQL_GIS_SIMPLIFY_FUNCTOR_H_INCLUDED
A Cartesian 2d geometry collection.
Definition: geometries_cs.h:374
A Cartesian 2d linestring.
Definition: geometries_cs.h:70
A Cartesian 2d multilinestring.
Definition: geometries_cs.h:601
A Cartesian 2d multipoint.
Definition: geometries_cs.h:500
A Cartesian 2d multipolygon.
Definition: geometries_cs.h:719
A Cartesian 2d point.
Definition: geometries_cs.h:46
A Cartesian 2d polygon.
Definition: geometries_cs.h:268
Abstract superclass for all geometric objects.
Definition: geometries.h:99
Simplify functor that calls Boost.Geometry with the correct parameter types.
Definition: simplify_functor.h:49
std::unique_ptr< Geometry > eval(const Geometry &g) const
Definition: simplify.cc:52
std::unique_ptr< Geometry > operator()(const Geometry &g) const override
Definition: simplify.cc:48
double m_max_distance
Definition: simplify_functor.h:51
Simplify(double max_distance)
Definition: simplify_functor.h:54
The base class of all functors that take one geometry argument.
Definition: functor.h:614
This file contains the superclasses for GIS functors.
This file declares the geometry class hierarchy used by the server as the internal representation of ...
Definition: area.cc:46