MySQL 8.0.37
Source Code Documentation
transform_functor.h
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1#ifndef SQL_GIS_TRANSFORM_FUNCTOR_H_INCLUDED
2#define SQL_GIS_TRANSFORM_FUNCTOR_H_INCLUDED
3
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26
27/// @file
28///
29/// This file declares the transform functor interface.
30///
31/// The functor is not intended for use directly by MySQL code. It should be
32/// used indirectly through the gis::transform() function.
33///
34/// @see gis::transform
35
36#include <memory> // std::unique_ptr
37#include <string>
38
39#include "my_compiler.h"
40
42MY_COMPILER_GCC_DIAGNOSTIC_IGNORE("-Wmaybe-uninitialized")
43#include <boost/geometry.hpp>
44#include <boost/geometry/srs/transformation.hpp>
46
47#include "sql/gis/functor.h"
48#include "sql/gis/geometries.h"
50
51namespace gis {
52
53/// Transform functor that calls Boost.Geometry with the correct parameter
54/// types.
55///
56/// The functor throws exceptions and is therefore only intended used to
57/// implement transform or other geographic functions. It should not be used
58/// directly by other MySQL code.
59class Transform : public Unary_functor<std::unique_ptr<Geometry>> {
60 private:
61 /// The transformation object that holds information about input and output
62 /// definitions.
63 boost::geometry::srs::transformation<> m_transformation;
64 /// Coordinate system of the output SRS.
66
67 public:
68 /// Create a new transform functor.
69 ///
70 /// Theoretically, we could deduce the coordinate system of the output SRS
71 /// from the old_srs_param proj4 string, but it's easier to get it from the DD
72 /// SRS object on the caller side.
73 ///
74 /// @param[in] old_srs_params The proj4 parameters of the input SRS.
75 /// @param[in] new_srs_params The proj4 parameters of the output SRS.
76 /// @param[in] output_cs The coordinate system of the output SRS.
77 Transform(const std::string &old_srs_params,
78 const std::string &new_srs_params, Coordinate_system output_cs);
79
80 std::unique_ptr<Geometry> operator()(const Geometry &g) const override;
81 std::unique_ptr<Geometry> eval(const Geometry &g) const;
82 std::unique_ptr<Geometry> eval(const Cartesian_point &g) const;
83 std::unique_ptr<Geometry> eval(const Geographic_point &g) const;
84 std::unique_ptr<Geometry> eval(const Cartesian_linestring &g) const;
85 std::unique_ptr<Geometry> eval(const Geographic_linestring &g) const;
86 std::unique_ptr<Geometry> eval(const Cartesian_polygon &g) const;
87 std::unique_ptr<Geometry> eval(const Geographic_polygon &g) const;
88 std::unique_ptr<Geometry> eval(const Cartesian_geometrycollection &g) const;
89 std::unique_ptr<Geometry> eval(const Geographic_geometrycollection &g) const;
90 std::unique_ptr<Geometry> eval(const Cartesian_multipoint &g) const;
91 std::unique_ptr<Geometry> eval(const Geographic_multipoint &g) const;
92 std::unique_ptr<Geometry> eval(const Cartesian_multilinestring &g) const;
93 std::unique_ptr<Geometry> eval(const Geographic_multilinestring &g) const;
94 std::unique_ptr<Geometry> eval(const Cartesian_multipolygon &g) const;
95 std::unique_ptr<Geometry> eval(const Geographic_multipolygon &g) const;
96};
97
98} // namespace gis
99
100#endif // SQL_GIS_TRANSFORM_FUNCTOR_H_INCLUDED
A Cartesian 2d geometry collection.
Definition: geometries_cs.h:375
A Cartesian 2d linestring.
Definition: geometries_cs.h:71
A Cartesian 2d multilinestring.
Definition: geometries_cs.h:602
A Cartesian 2d multipoint.
Definition: geometries_cs.h:501
A Cartesian 2d multipolygon.
Definition: geometries_cs.h:720
A Cartesian 2d point.
Definition: geometries_cs.h:47
A Cartesian 2d polygon.
Definition: geometries_cs.h:269
A geographic (ellipsoidal) 2d geometry collection.
Definition: geometries_cs.h:438
A geographic (ellipsoidal) 2d linestring.
Definition: geometries_cs.h:125
A geographic (ellipsoidal) 2d multilinestring.
Definition: geometries_cs.h:661
A geographic (ellipsoidal) 2d multipoint.
Definition: geometries_cs.h:552
A geographic (ellipsoidal) 2d multipolygon.
Definition: geometries_cs.h:774
A geographic (ellipsoidal) 2d point.
Definition: geometries_cs.h:58
A geographic (ellipsoidal) 2d polygon.
Definition: geometries_cs.h:322
Abstract superclass for all geometric objects.
Definition: geometries.h:100
Transform functor that calls Boost.Geometry with the correct parameter types.
Definition: transform_functor.h:59
boost::geometry::srs::transformation m_transformation
The transformation object that holds information about input and output definitions.
Definition: transform_functor.h:63
std::unique_ptr< Geometry > eval(const Geometry &g) const
Definition: transform.cc:131
Coordinate_system m_output_cs
Coordinate system of the output SRS.
Definition: transform_functor.h:65
Transform(const std::string &old_srs_params, const std::string &new_srs_params, Coordinate_system output_cs)
Create a new transform functor.
Definition: transform.cc:120
std::unique_ptr< Geometry > operator()(const Geometry &g) const override
Definition: transform.cc:127
The base class of all functors that take one geometry argument.
Definition: functor.h:615
This file declares the geometry class hierarchy used by the server as the internal representation of ...
This file contains Boost.Geometry type traits declarations for Cartesian and geographic geometries.
Header for compiler-dependent features.
#define MY_COMPILER_GCC_DIAGNOSTIC_IGNORE(X)
Definition: my_compiler.h:261
#define MY_COMPILER_DIAGNOSTIC_PUSH()
save the compiler's diagnostic (enabled warnings, errors, ...) state
Definition: my_compiler.h:296
#define MY_COMPILER_DIAGNOSTIC_POP()
restore the compiler's diagnostic (enabled warnings, errors, ...) state
Definition: my_compiler.h:297
Definition: area.cc:47
Coordinate_system
Types of coordinate systems.
Definition: geometries.h:69