Class GeometryUtils

ClassList > GeometryUtils

Inherits the following classes: QObject

Public Types

Type	Name
enum int	GeometryOperationResult

Public Functions

Type	Name
	GeometryUtils (QObject * parent=nullptr)

Public Static Functions

Type	Name
Q_INVOKABLE GeometryOperationResult	addRingFromRubberband (QgsVectorLayer * layer, QgsFeatureId fid, RubberbandModel * rubberBandModel) Adds a ring to a polygon with given fid using the ring in the rubberband model.
Q_INVOKABLE QgsRectangle	boundingBox (const QgsGeometry & geometry) Returns the bounding box of a given geometry .
Q_INVOKABLE QgsPoint	centroid (const QgsGeometry & geometry) Creates a centroid point from a given geometry .
Q_INVOKABLE QgsPoint	coordinateToPoint (const QGeoCoordinate & coor) Converts QGeoCoordinate to QgsPoint.
Q_INVOKABLE QgsGeometry	createGeometryFromWkt (const QString & wkt) Creates a geometry from a WKT string.
Q_INVOKABLE QgsRectangle	createRectangleFromPoints (const QgsPoint & p1, const QgsPoint & p2) Returns a rectangle from two points.
Q_INVOKABLE double	distanceBetweenPoints (const QgsPoint & start, const QgsPoint & end) Returns the distance between a pair of start and__end points.
Q_INVOKABLE QgsPoint	emptyPoint () Returns an empty (i.e. null) point.
Q_INVOKABLE GeometryOperationResult	eraseFromRubberband (QgsVectorLayer * layer, QgsFeatureId fid, RubberbandModel * rubberBandModel) Reshape a polygon with given__fid using the ring in the rubberband model.
Q_INVOKABLE QgsGeometry	lineFromRubberband (RubberbandModel * rubberBandModel, const QgsCoordinateReferenceSystem & crs, Qgis::WkbType wkbType=Qgis::WkbType::Unknown) Returns a QgsGeometry with a line by using the point sequence in the rubberband model.
Q_INVOKABLE QgsPoint	point (double x, double y, double z=std::numeric_limits< double >::quiet_NaN(), double m=std::numeric_limits< double >::quiet_NaN()) Creates a point from x and__y with optional__z and__values .
Q_INVOKABLE QgsGeometry	polygonFromRubberband (RubberbandModel * rubberBandModel, const QgsCoordinateReferenceSystem & crs, Qgis::WkbType wkbType=Qgis::WkbType::Unknown) Returns a QgsGeometry with a polygon by using the point sequence in the rubberband model.
Q_INVOKABLE QgsPoint	reprojectPoint (const QgsPoint & point, const QgsCoordinateReferenceSystem & sourceCrs, const QgsCoordinateReferenceSystem & destinationCrs) Returns a reprojected point from the stated__sourceCrs to a__destinationCrs .
Q_INVOKABLE QgsPoint	reprojectPointToWgs84 (const QgsPoint & point, const QgsCoordinateReferenceSystem & crs) Returns a reprojected point from the stated__crs to WGS84.
Q_INVOKABLE QgsRectangle	reprojectRectangle (const QgsRectangle & rectangle, const QgsCoordinateReferenceSystem & sourceCrs, const QgsCoordinateReferenceSystem & destinationCrs) Returns a reprojected rectangle from the stated__sourceCrs to a__destinationCrs .
Q_INVOKABLE GeometryOperationResult	reshapeFromRubberband (QgsVectorLayer * layer, QgsFeatureId fid, RubberbandModel * rubberBandModel) Reshape a polygon with given__fid using the ring in the rubberband model.
Q_INVOKABLE GeometryOperationResult	splitFeatureFromRubberband (QgsVectorLayer * layer, QgsFeatureId fid, RubberbandModel * rubberBandModel)
Q_INVOKABLE QgsGeometry	variableWidthBufferByMFromRubberband (RubberbandModel * rubberBandModel, const QgsCoordinateReferenceSystem & crs) Creates a variable width buffer polygon using M values from a rubberband model.

Public Types Documentation

enum GeometryOperationResult

enum GeometryUtils::GeometryOperationResult {
    Success = 0,
    NothingHappened = 1000,
    InvalidBaseGeometry,
    InvalidInputGeometryType,
    SelectionIsEmpty,
    SelectionIsGreaterThanOne,
    GeometryEngineError,
    LayerNotEditable,
    AddPartSelectedGeometryNotFound,
    AddPartNotMultiGeometry,
    AddRingNotClosed,
    AddRingNotValid,
    AddRingCrossesExistingRings,
    AddRingNotInExistingFeature,
    SplitCannotSplitPoint
};

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Public Functions Documentation

function GeometryUtils

explicit GeometryUtils::GeometryUtils (
    QObject * parent=nullptr
) 

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Public Static Functions Documentation

function addRingFromRubberband

Adds a ring to a polygon with given fid using the ring in the rubberband model.

static Q_INVOKABLE GeometryOperationResult GeometryUtils::addRingFromRubberband (
    QgsVectorLayer * layer,
    QgsFeatureId fid,
    RubberbandModel * rubberBandModel
) 

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function boundingBox

Returns the bounding box of a given geometry .

static inline Q_INVOKABLE QgsRectangle GeometryUtils::boundingBox (
    const QgsGeometry & geometry
) 

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function centroid

Creates a centroid point from a given geometry .

static Q_INVOKABLE QgsPoint GeometryUtils::centroid (
    const QgsGeometry & geometry
) 

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function coordinateToPoint

Converts QGeoCoordinate to QgsPoint.

static Q_INVOKABLE QgsPoint GeometryUtils::coordinateToPoint (
    const QGeoCoordinate & coor
) 

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function createGeometryFromWkt

Creates a geometry from a WKT string.

static Q_INVOKABLE QgsGeometry GeometryUtils::createGeometryFromWkt (
    const QString & wkt
) 

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function createRectangleFromPoints

Returns a rectangle from two points.

static Q_INVOKABLE QgsRectangle GeometryUtils::createRectangleFromPoints (
    const QgsPoint & p1,
    const QgsPoint & p2
) 

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function distanceBetweenPoints

Returns the distance between a pair of start and__end points.

static Q_INVOKABLE double GeometryUtils::distanceBetweenPoints (
    const QgsPoint & start,
    const QgsPoint & end
) 

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function emptyPoint

Returns an empty (i.e. null) point.

static inline Q_INVOKABLE QgsPoint GeometryUtils::emptyPoint () 

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function eraseFromRubberband

Reshape a polygon with given__fid using the ring in the rubberband model.

static Q_INVOKABLE GeometryOperationResult GeometryUtils::eraseFromRubberband (
    QgsVectorLayer * layer,
    QgsFeatureId fid,
    RubberbandModel * rubberBandModel
) 

---

function lineFromRubberband

Returns a QgsGeometry with a line by using the point sequence in the rubberband model.

static Q_INVOKABLE QgsGeometry GeometryUtils::lineFromRubberband (
    RubberbandModel * rubberBandModel,
    const QgsCoordinateReferenceSystem & crs,
    Qgis::WkbType wkbType=Qgis::WkbType::Unknown
) 

---

function point

Creates a point from x and__y with optional__z and__values .

static inline Q_INVOKABLE QgsPoint GeometryUtils::point (
    double x,
    double y,
    double z=std::numeric_limits< double >::quiet_NaN(),
    double m=std::numeric_limits< double >::quiet_NaN()
) 

---

function polygonFromRubberband

Returns a QgsGeometry with a polygon by using the point sequence in the rubberband model.

static Q_INVOKABLE QgsGeometry GeometryUtils::polygonFromRubberband (
    RubberbandModel * rubberBandModel,
    const QgsCoordinateReferenceSystem & crs,
    Qgis::WkbType wkbType=Qgis::WkbType::Unknown
) 

---

function reprojectPoint

Returns a reprojected point from the stated__sourceCrs to a__destinationCrs .

static Q_INVOKABLE QgsPoint GeometryUtils::reprojectPoint (
    const QgsPoint & point,
    const QgsCoordinateReferenceSystem & sourceCrs,
    const QgsCoordinateReferenceSystem & destinationCrs
) 

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function reprojectPointToWgs84

Returns a reprojected point from the stated__crs to WGS84.

static Q_INVOKABLE QgsPoint GeometryUtils::reprojectPointToWgs84 (
    const QgsPoint & point,
    const QgsCoordinateReferenceSystem & crs
) 

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function reprojectRectangle

Returns a reprojected rectangle from the stated__sourceCrs to a__destinationCrs .

static Q_INVOKABLE QgsRectangle GeometryUtils::reprojectRectangle (
    const QgsRectangle & rectangle,
    const QgsCoordinateReferenceSystem & sourceCrs,
    const QgsCoordinateReferenceSystem & destinationCrs
) 

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function reshapeFromRubberband

Reshape a polygon with given__fid using the ring in the rubberband model.

static Q_INVOKABLE GeometryOperationResult GeometryUtils::reshapeFromRubberband (
    QgsVectorLayer * layer,
    QgsFeatureId fid,
    RubberbandModel * rubberBandModel
) 

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function splitFeatureFromRubberband

static Q_INVOKABLE GeometryOperationResult GeometryUtils::splitFeatureFromRubberband (
    QgsVectorLayer * layer,
    QgsFeatureId fid,
    RubberbandModel * rubberBandModel
) 

Performs a split using the line in the rubberband model.

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function variableWidthBufferByMFromRubberband

Creates a variable width buffer polygon using M values from a rubberband model.

static Q_INVOKABLE QgsGeometry GeometryUtils::variableWidthBufferByMFromRubberband (
    RubberbandModel * rubberBandModel,
    const QgsCoordinateReferenceSystem & crs
) 

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The documentation for this class was generated from the following file src/core/utils/geometryutils.h