25#include <QPainterPath>
99 virtual
void addToPainterPath( QPainterPath &path ) const = 0;
100 QPainterPath asQPainterPath() const override;
106 virtual
void drawAsPolygon( QPainter &p ) const = 0;
116 virtual
int numPoints() const = 0;
121 Returns the number of points in the curve.
124 sipRes = sipCpp->numPoints();
128 int __bool__()
const;
172 QString asKml(
int precision = 17 ) const override;
181 int vertexCount(
int part = 0,
int ring = 0 ) const override;
182 int ringCount(
int part = 0 ) const override;
183 int partCount() const override;
188 QgsBox3D boundingBox3D() const override;
189 bool isValid( QString &error
SIP_OUT,
Qgis::GeometryValidityFlags flags =
Qgis::GeometryValidityFlags() ) const override;
196 virtual
double xAt(
int index ) const = 0;
203 virtual
double yAt(
int index ) const = 0;
211 virtual
double zAt(
int index ) const = 0;
219 virtual
double mAt(
int index ) const = 0;
224 virtual QPolygonF asQPolygonF() const;
260 double straightDistance2d() const;
271 double sinuosity() const;
280 Qgis::AngularDirection orientation() const;
293 virtual
void scroll(
int firstVertexIndex ) = 0;
311 return static_cast<const QgsCurve *
>( geom );
326 virtual std::tuple< std::unique_ptr< QgsCurve >, std::unique_ptr< QgsCurve > >
splitCurveAtVertex(
int index )
const = 0;
343 bool snapToGridPrivate(
double hSpacing,
double vSpacing,
double dSpacing,
double mSpacing,
344 const QVector<double> &srcX,
const QVector<double> &srcY,
const QVector<double> &srcZ,
const QVector<double> &srcM,
345 QVector<double> &outX, QVector<double> &outY, QVector<double> &outZ, QVector<double> &outM,
346 bool removeRedundantPoints )
const;
354 mutable bool mHasCachedSummedUpArea =
false;
355 mutable double mSummedUpArea = 0;
359 mutable bool mHasCachedValidity =
false;
360 mutable QString mValidityFailureReason;
362 friend class TestQgsGeometry;
The Qgis class provides global constants for use throughout the application.
VertexType
Types of vertex.
WkbType
The WKB type describes the number of dimensions a geometry has.
Abstract base class for all geometries.
virtual QgsPoint childPoint(int index) const
Returns point at index (for geometries without child geometries - i.e.
SegmentationToleranceType
Segmentation tolerance as maximum angle or maximum difference between approximation and circle.
virtual int vertexNumberFromVertexId(QgsVertexId id) const =0
Returns the vertex number corresponding to a vertex id.
virtual QgsAbstractGeometry * boundary() const =0
Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the...
virtual int childCount() const
Returns number of child geometries (for geometries with child geometries) or child points (for geomet...
virtual void adjacentVertices(QgsVertexId vertex, QgsVertexId &previousVertex, QgsVertexId &nextVertex) const =0
Returns the vertices adjacent to a specified vertex within a geometry.
virtual void clearCache() const
Clears any cached parameters associated with the geometry, e.g., bounding boxes.
Qgis::WkbType wkbType() const
Returns the WKB type of the geometry.
virtual bool operator!=(const QgsAbstractGeometry &other) const =0
virtual QgsCoordinateSequence coordinateSequence() const =0
Retrieves the sequence of geometries, rings and nodes.
virtual bool operator==(const QgsAbstractGeometry &other) const =0
virtual bool nextVertex(QgsVertexId &id, QgsPoint &vertex) const =0
Returns next vertex id and coordinates.
A 3-dimensional box composed of x, y, z coordinates.
Abstract base class for curved geometry type.
virtual bool equals(const QgsCurve &other) const =0
Checks whether this curve exactly equals another curve.
virtual bool pointAt(int node, QgsPoint &point, Qgis::VertexType &type) const =0
Returns the point and vertex id of a point within the curve.
static const QgsCurve * cast(const QgsAbstractGeometry *geom)
Cast the geom to a QgsCurve.
virtual int indexOf(const QgsPoint &point) const =0
Returns the index of the first vertex matching the given point, or -1 if a matching vertex is not fou...
virtual void sumUpArea(double &sum) const =0
Sums up the area of the curve by iterating over the vertices (shoelace formula).
QgsBox3D mBoundingBox
Cached bounding box.
QgsCurve * clone() const override=0
Clones the geometry by performing a deep copy.
virtual QgsPoint startPoint() const =0
Returns the starting point of the curve.
virtual std::tuple< std::unique_ptr< QgsCurve >, std::unique_ptr< QgsCurve > > splitCurveAtVertex(int index) const =0
Splits the curve at the specified vertex index, returning two curves which represent the portion of t...
virtual QgsCurve * reversed() const =0
Returns a reversed copy of the curve, where the direction of the curve has been flipped.
virtual QgsPoint endPoint() const =0
Returns the end point of the curve.
Line string geometry type, with support for z-dimension and m-values.
Point geometry type, with support for z-dimension and m-values.
static Qgis::GeometryType geometryType(Qgis::WkbType type)
Returns the geometry type for a WKB type, e.g., both MultiPolygon and CurvePolygon would have a Polyg...
static bool isSingleType(Qgis::WkbType type)
Returns true if the WKB type is a single type.
QVector< QgsRingSequence > QgsCoordinateSequence
QVector< QgsPoint > QgsPointSequence
Utility class for identifying a unique vertex within a geometry.