ngen::geopackage::wkb Struct Reference

A recursive WKB reader. More...

#include <wkb.hpp>

Collaboration diagram for ngen::geopackage::wkb:

Classes
struct	wgs84

Public Types
using	point_t = bg::model::point<double, 2, bg::cs::cartesian>
using	linestring_t = bg::model::linestring<point_t>
using	polygon_t = bg::model::polygon<point_t>
using	multipoint_t = bg::model::multi_point<point_t>
using	multilinestring_t = bg::model::multi_linestring<linestring_t>
using	multipolygon_t = bg::model::multi_polygon<polygon_t>
using	geometry
using	byte_t = uint8_t
using	byte_vector = std::vector<byte_t>

Public Member Functions
	wkb ()=delete

Static Public Member Functions
static geometry	read (const boost::span< const uint8_t > buffer)
	Read WKB from a given buffer.

Static Private Member Functions
static point_t	read_point (const boost::span< const uint8_t >, int &, uint8_t)
	Read a WKB point into a cartesian model.
static linestring_t	read_linestring (const boost::span< const uint8_t >, int &, uint8_t)
	Read a WKB linestring into a cartesian model.
static polygon_t	read_polygon (const boost::span< const uint8_t >, int &, uint8_t)
	Read a WKB polygon into a cartesian model.
static multipoint_t	read_multipoint (const boost::span< const uint8_t >, int &, uint8_t)
	Read a WKB multipoint into a cartesian model.
static multilinestring_t	read_multilinestring (const boost::span< const uint8_t >, int &, uint8_t)
	Read a WKB multilinestring into a cartesian model.
static multipolygon_t	read_multipolygon (const boost::span< const uint8_t >, int &, uint8_t)
	Read a WKB multipolygon into a cartesian model.

Detailed Description

A recursive WKB reader.

Note

This WKB implementation follows a subset of the OGC Specification found in https://www.ogc.org/standard/sfa/. This is a strict WKB implementation and does not support Extended WKB (EWKB) or Tiny WKB (TWKB).

Member Typedef Documentation

byte_t

using ngen::geopackage::wkb::byte_t = uint8_t

byte_vector

using ngen::geopackage::wkb::byte_vector = std::vector<byte_t>

geometry

using ngen::geopackage::wkb::geometry

Initial value:

 boost::variant<
        point_t,
        linestring_t,
        polygon_t,
        multipoint_t,
        multilinestring_t,
        multipolygon_t
    >

linestring_t

using ngen::geopackage::wkb::linestring_t = bg::model::linestring<point_t>

multilinestring_t

using ngen::geopackage::wkb::multilinestring_t = bg::model::multi_linestring<linestring_t>

multipoint_t

using ngen::geopackage::wkb::multipoint_t = bg::model::multi_point<point_t>

multipolygon_t

using ngen::geopackage::wkb::multipolygon_t = bg::model::multi_polygon<polygon_t>

point_t

using ngen::geopackage::wkb::point_t = bg::model::point<double, 2, bg::cs::cartesian>

polygon_t

using ngen::geopackage::wkb::polygon_t = bg::model::polygon<point_t>

Constructor & Destructor Documentation

wkb()

ngen::geopackage::wkb::wkb ( )

delete

Member Function Documentation

read()

wkb::geometry ngen::geopackage::wkb::read ( const boost::span< const uint8_t > buffer )

static

Read WKB from a given buffer.

Parameters

[in]

buffer

byte vector buffer

Returns

geometry wkb::geometry struct containing the geometry data from the buffer

References utils::copy_from(), ngen::geopackage::linestring, ngen::geopackage::multilinestring, ngen::geopackage::multipoint, ngen::geopackage::multipolygon, ngen::geopackage::point, ngen::geopackage::polygon, read_linestring(), read_multilinestring(), read_multipoint(), read_multipolygon(), read_point(), and read_polygon().

read_linestring()

wkb::linestring_t ngen::geopackage::wkb::read_linestring ( const boost::span< const uint8_t > buffer, int & index, uint8_t order )

staticprivate

Read a WKB linestring into a cartesian model.

Returns

linestring_t

References utils::copy_from(), ngen::geopackage::linestring, and read_point().

Referenced by read(), read_multilinestring(), and read_polygon().

read_multilinestring()

wkb::multilinestring_t ngen::geopackage::wkb::read_multilinestring ( const boost::span< const uint8_t > buffer, int & index, uint8_t order )

staticprivate

Read a WKB multilinestring into a cartesian model.

Returns

multilinestring_t

References utils::copy_from(), ngen::geopackage::linestring, read_linestring(), and ngen::geopackage::throw_if_not_type().

Referenced by read().

read_multipoint()

wkb::multipoint_t ngen::geopackage::wkb::read_multipoint ( const boost::span< const uint8_t > buffer, int & index, uint8_t order )

staticprivate

Read a WKB multipoint into a cartesian model.

Returns

multipoint_t

References utils::copy_from(), ngen::geopackage::point, read_point(), and ngen::geopackage::throw_if_not_type().

Referenced by read().

read_multipolygon()

wkb::multipolygon_t ngen::geopackage::wkb::read_multipolygon ( const boost::span< const uint8_t > buffer, int & index, uint8_t order )

staticprivate

Read a WKB multipolygon into a cartesian model.

Returns

multipolygon_t

References utils::copy_from(), ngen::geopackage::polygon, read_polygon(), and ngen::geopackage::throw_if_not_type().

Referenced by read().

read_point()

wkb::point_t ngen::geopackage::wkb::read_point ( const boost::span< const uint8_t > buffer, int & index, uint8_t order )

staticprivate

Read a WKB point into a cartesian model.

Returns

point_t

References utils::copy_from().

Referenced by read(), read_linestring(), and read_multipoint().

read_polygon()

wkb::polygon_t ngen::geopackage::wkb::read_polygon ( const boost::span< const uint8_t > buffer, int & index, uint8_t order )

staticprivate

Read a WKB polygon into a cartesian model.

Returns

polygon_t

References utils::copy_from(), ngen::geopackage::polygon, and read_linestring().

Referenced by read(), and read_multipolygon().

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The documentation for this struct was generated from the following files:

• include/geopackage/wkb.hpp
• src/geopackage/wkb.cpp