MySQL 8.0.29
Source Code Documentation
line_interpolate.h
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22
23/**
24 @file
25
26 Interface for obtaining a point at a given distance on a linestring
27*/
28
29#ifndef SQL_GIS_LINE_INTERPOLATE_H_INCLUDED
30#define SQL_GIS_LINE_INTERPOLATE_H_INCLUDED
31
32#include <memory> // std::unique_ptr
33
34#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
35#include "sql/gis/geometries.h"
36
37namespace gis {
38/// Finds the point in a linestring at a given distance from the starting point.
39///
40/// @param[in] srs The spatial reference system.
41/// @param[in] g Input geometry.
42/// @param[in] interpolation_distance The distance from the starting point.
43/// @param[in] return_multiple_points True if the return geometry should be a
44/// multipoint. False if the return value should be a single point.
45/// @param[in] func_name Function name used in error reporting.
46/// @param[out] result Result. Invalid if `result_null`.
47/// @param[out] result_null Whether result is `NULL` instead of `result`.
48///
49/// @retval false Success.
50/// @retval true An error has occured. The error has been reported with
51/// my_error().
53 const Geometry *g,
54 const double interpolation_distance,
55 const bool return_multiple_points,
56 const char *func_name,
57 std::unique_ptr<Geometry> *result,
58 bool *result_null) noexcept;
59
60} // namespace gis
61
62#endif // SQL_GIS_LINE_INTERPOLATE_H_INCLUDED
Definition: spatial.h:214
Definition: spatial_reference_system.h:52
This file declares the geometry class hierarchy used by the server as the internal representation of ...
Definition: area.cc:46
bool line_interpolate_point(const dd::Spatial_reference_system *srs, const Geometry *g, const double interpolation_distance, const bool return_multiple_points, const char *func_name, std::unique_ptr< Geometry > *result, bool *result_null) noexcept
Finds the point in a linestring at a given distance from the starting point.
Definition: line_interpolate.cc:87
Definition: result.h:29