Handles storage of information regarding WKB types and their properties. More...

#include <qgswkbtypes.h>

Static Public Member Functions
static Qgis::WkbType	addM (Qgis::WkbType type)
	Adds the m dimension to a WKB type and returns the new type.

static Qgis::WkbType	addZ (Qgis::WkbType type)
	Adds the z dimension to a WKB type and returns the new type.

static int	coordDimensions (Qgis::WkbType type)
	Returns the coordinate dimension of the geometry type as an integer.

static Qgis::WkbType	curveType (Qgis::WkbType type)
	Returns the curve type for a WKB type.

static QString	displayString (Qgis::WkbType type)
	Returns a non-translated display string type for a WKB type, e.g., the geometry name used in WKT geometry representations.

static Qgis::WkbType	dropM (Qgis::WkbType type)
	Drops the m dimension (if present) for a WKB type and returns the new type.

static Qgis::WkbType	dropZ (Qgis::WkbType type)
	Drops the z dimension (if present) for a WKB type and returns the new type.

static Qgis::WkbType	flatType (Qgis::WkbType type)
	Returns the flat type for a WKB type.

static QString	geometryDisplayString (Qgis::GeometryType type)
	Returns a display string for a geometry type.

static Qgis::GeometryType	geometryType (Qgis::WkbType type)
	Returns the geometry type for a WKB type, e.g., both MultiPolygon and CurvePolygon would have a PolygonGeometry geometry type.

static bool	hasM (Qgis::WkbType type)
	Tests whether a WKB type contains m values.

static bool	hasZ (Qgis::WkbType type)
	Tests whether a WKB type contains the z-dimension.

static bool	isCurvedType (Qgis::WkbType type)
	Returns `true` if the WKB type is a curved type or can contain curved geometries.

static bool	isMultiType (Qgis::WkbType type)
	Returns `true` if the WKB type is a multi type.

static bool	isSingleType (Qgis::WkbType type)
	Returns `true` if the WKB type is a single type.

static Qgis::WkbType	linearType (Qgis::WkbType type)
	Returns the linear type for a WKB type.

static Qgis::WkbType	multiType (Qgis::WkbType type)
	Returns the multi type for a WKB type.

static Qgis::WkbType	parseType (const QString &wktStr)
	Attempts to extract the WKB type from a WKT string.

static Qgis::WkbType	promoteNonPointTypesToMulti (Qgis::WkbType type)
	Promotes a WKB geometry type to its multi-type equivalent, with the exception of point geometry types.

static Qgis::WkbType	singleType (Qgis::WkbType type)
	Returns the single type for a WKB type.

static Qgis::WkbType	to25D (Qgis::WkbType type)
	Will convert the 25D version of the flat type if supported or Unknown if not supported.

static QString	translatedDisplayString (Qgis::WkbType type)
	Returns a translated display string type for a WKB type, e.g., the geometry name used in WKT geometry representations.

static int	wkbDimensions (Qgis::WkbType type)
	Returns the inherent dimension of the geometry type as an integer.

static Qgis::WkbType	zmType (Qgis::WkbType type, bool hasZ, bool hasM)
	Returns the modified input geometry type according to hasZ / hasM.

Detailed Description

Handles storage of information regarding WKB types and their properties.

Definition at line 41 of file qgswkbtypes.h.

Member Function Documentation

◆ addM()

static Qgis::WkbType QgsWkbTypes::addM ( Qgis::WkbType type )

inlinestatic

Adds the m dimension to a WKB type and returns the new type.

Parameters

type	original type

See also: addZ(); dropM(); hasM()

Definition at line 1171 of file qgswkbtypes.h.

◆ addZ()

static Qgis::WkbType QgsWkbTypes::addZ ( Qgis::WkbType type )

inlinestatic

Adds the z dimension to a WKB type and returns the new type.

Parameters

type	original type

See also: addM(); dropZ(); hasZ()

Definition at line 1147 of file qgswkbtypes.h.

◆ coordDimensions()

static int QgsWkbTypes::coordDimensions ( Qgis::WkbType type )

inlinestatic

Returns the coordinate dimension of the geometry type as an integer.

Returned value will be between 2-4, depending on whether the geometry type contains the Z or M dimensions. Invalid geometry types will return a dimension of 0.

See also: wkbDimensions()

Definition at line 912 of file qgswkbtypes.h.

◆ curveType()

static Qgis::WkbType QgsWkbTypes::curveType ( Qgis::WkbType type )

inlinestatic

Returns the curve type for a WKB type.

For example, for Polygon WKB types the curve type would be CurvePolygon.

Note: Returns CompoundCurve for CircularString (and its Z/M variants)

See also: linearType(); isMultiType(); isCurvedType(); singleType(); flatType(); multiType()

Since: QGIS 3.10

Definition at line 404 of file qgswkbtypes.h.

◆ displayString()

QString QgsWkbTypes::displayString ( Qgis::WkbType type )

static

Returns a non-translated display string type for a WKB type, e.g., the geometry name used in WKT geometry representations.

Definition at line 155 of file qgswkbtypes.cpp.

◆ dropM()

static Qgis::WkbType QgsWkbTypes::dropM ( Qgis::WkbType type )

inlinestatic

Drops the m dimension (if present) for a WKB type and returns the new type.

Parameters

type	original type

See also: dropZ(); addM()

Definition at line 1223 of file qgswkbtypes.h.

◆ dropZ()

static Qgis::WkbType QgsWkbTypes::dropZ ( Qgis::WkbType type )

inlinestatic

Drops the z dimension (if present) for a WKB type and returns the new type.

Parameters

type	original type

See also: dropM(); addZ()

Definition at line 1206 of file qgswkbtypes.h.

◆ flatType()

static Qgis::WkbType QgsWkbTypes::flatType ( Qgis::WkbType type )

inlinestatic

Returns the flat type for a WKB type.

This is the WKB type minus any Z or M dimensions. For example, for PolygonZM WKB types the single type would be Polygon.

See also: singleType(); multiType(); curveType()

Definition at line 671 of file qgswkbtypes.h.

◆ geometryDisplayString()

QString QgsWkbTypes::geometryDisplayString ( Qgis::GeometryType type )

static

Returns a display string for a geometry type.

This will return one of the following strings:

Point
Line
Polygon
Unknown Geometry
No Geometry
Invalid Geometry

Definition at line 241 of file qgswkbtypes.cpp.

◆ geometryType()

static Qgis::GeometryType QgsWkbTypes::geometryType ( Qgis::WkbType type )

inlinestatic

Returns the geometry type for a WKB type, e.g., both MultiPolygon and CurvePolygon would have a PolygonGeometry geometry type.

GeometryCollections are reported as Qgis::GeometryType::Unknown.

Definition at line 925 of file qgswkbtypes.h.

◆ hasM()

static bool QgsWkbTypes::hasM ( Qgis::WkbType type )

inlinestatic

Tests whether a WKB type contains m values.

Returns: true if type has m values

See also: addM(); hasZ()

Definition at line 1098 of file qgswkbtypes.h.

◆ hasZ()

static bool QgsWkbTypes::hasZ ( Qgis::WkbType type )

inlinestatic

Tests whether a WKB type contains the z-dimension.

Returns: true if type has z values

See also: addZ(); hasM()

Definition at line 1044 of file qgswkbtypes.h.

◆ isCurvedType()

static bool QgsWkbTypes::isCurvedType ( Qgis::WkbType type )

inlinestatic

Returns true if the WKB type is a curved type or can contain curved geometries.

Definition at line 869 of file qgswkbtypes.h.

◆ isMultiType()

static bool QgsWkbTypes::isMultiType ( Qgis::WkbType type )

inlinestatic

Returns true if the WKB type is a multi type.

See also: isSingleType(); multiType()

Definition at line 813 of file qgswkbtypes.h.

◆ isSingleType()

static bool QgsWkbTypes::isSingleType ( Qgis::WkbType type )

inlinestatic

Returns true if the WKB type is a single type.

See also: isMultiType(); singleType()

Definition at line 803 of file qgswkbtypes.h.

◆ linearType()

static Qgis::WkbType QgsWkbTypes::linearType ( Qgis::WkbType type )

inlinestatic

Returns the linear type for a WKB type.

For example, for a CompoundCurve, the linear type would be LineString.

See also: curveType(); isMultiType(); isCurvedType(); singleType(); flatType(); multiType()

Since: QGIS 3.14

Definition at line 553 of file qgswkbtypes.h.

◆ multiType()

static Qgis::WkbType QgsWkbTypes::multiType ( Qgis::WkbType type )

inlinestatic

Returns the multi type for a WKB type.

For example, for Polygon WKB types the multi type would be MultiPolygon.

See also: promoteNonPointTypesToMulti(); isMultiType(); singleType(); curveType(); flatType()

Definition at line 220 of file qgswkbtypes.h.

◆ parseType()

static Qgis::WkbType QgsWkbTypes::parseType ( const QString & wktStr )

static

Attempts to extract the WKB type from a WKT string.

Parameters

wktStr a valid WKT string

◆ promoteNonPointTypesToMulti()

static Qgis::WkbType QgsWkbTypes::promoteNonPointTypesToMulti ( Qgis::WkbType type )

inlinestatic

Promotes a WKB geometry type to its multi-type equivalent, with the exception of point geometry types.

Specifically, this method should be used to determine the most-permissive possible resultant WKB type which can result from subtracting parts of a geometry. A single-point geometry type can never become a multi-point geometry type as a result of a subtraction, but a single-line or single-polygon geometry CAN become a multipart geometry as a result of subtracting portions of the geometry.

See also: multiType(); singleType()

Since: QGIS 3.24

Definition at line 374 of file qgswkbtypes.h.

◆ singleType()

static Qgis::WkbType QgsWkbTypes::singleType ( Qgis::WkbType type )

inlinestatic

Returns the single type for a WKB type.

For example, for MultiPolygon WKB types the single type would be Polygon.

See also: isSingleType(); multiType(); curveType(); flatType()

Definition at line 53 of file qgswkbtypes.h.

◆ to25D()

static Qgis::WkbType QgsWkbTypes::to25D ( Qgis::WkbType type )

inlinestatic

Will convert the 25D version of the flat type if supported or Unknown if not supported.

Parameters

type	The type to convert

Returns: the 25D version of the type or Unknown

Definition at line 1239 of file qgswkbtypes.h.

◆ translatedDisplayString()

QString QgsWkbTypes::translatedDisplayString ( Qgis::WkbType type )

static

Returns a translated display string type for a WKB type, e.g., the geometry name used in WKT geometry representations.

Since: QGIS 3.18

Definition at line 165 of file qgswkbtypes.cpp.

◆ wkbDimensions()

static int QgsWkbTypes::wkbDimensions ( Qgis::WkbType type )

inlinestatic

Returns the inherent dimension of the geometry type as an integer.

Returned value will always be less than or equal to the coordinate dimension.

Returns: 0 for point geometries, 1 for line geometries, 2 for polygon geometries Invalid geometry types will return a dimension of 0.

See also: coordDimensions()

Definition at line 892 of file qgswkbtypes.h.

◆ zmType()

static Qgis::WkbType QgsWkbTypes::zmType	(	Qgis::WkbType	type,
		bool	hasZ,
		bool	hasM
	)

inlinestatic

Returns the modified input geometry type according to hasZ / hasM.

Definition at line 782 of file qgswkbtypes.h.

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

/build/qgis-3.40.0+99sid/src/core/geometry/qgswkbtypes.h
/build/qgis-3.40.0+99sid/src/core/geometry/qgswkbtypes.cpp

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ addM()

◆ addZ()

◆ coordDimensions()

◆ curveType()

◆ displayString()

◆ dropM()

◆ dropZ()

◆ flatType()

◆ geometryDisplayString()

◆ geometryType()

◆ hasM()

◆ hasZ()

◆ isCurvedType()

◆ isMultiType()

◆ isSingleType()

◆ linearType()

◆ multiType()

◆ parseType()

◆ promoteNonPointTypesToMulti()

◆ singleType()

◆ to25D()

◆ translatedDisplayString()

◆ wkbDimensions()

◆ zmType()