18 #ifndef QGSLINESTRINGV2_H 19 #define QGSLINESTRINGV2_H 24 #include "qgis_core.h" 62 QgsLineString(
const QVector<double> &x,
const QVector<double> &y,
63 const QVector<double> &z = QVector<double>(),
64 const QVector<double> &m = QVector<double>() );
82 double xAt(
int index )
const override;
83 double yAt(
int index )
const override;
92 double zAt(
int index )
const;
101 double mAt(
int index )
const;
110 void setXAt(
int index,
double x );
119 void setYAt(
int index,
double y );
128 void setZAt(
int index,
double z );
137 void setMAt(
int index,
double m );
156 void addVertex(
const QgsPoint &pt );
172 void extend(
double startDistance,
double endDistance );
179 void clear()
override;
182 bool removeDuplicateNodes(
double epsilon = 4 * DBL_EPSILON,
bool useZValues =
false )
override;
185 bool fromWkt(
const QString &wkt )
override;
187 QByteArray
asWkb()
const override;
188 QString
asWkt(
int precision = 17 )
const override;
189 QDomElement
asGml2( QDomDocument &doc,
int precision = 17,
const QString &ns =
"gml" )
const override;
190 QDomElement
asGml3( QDomDocument &doc,
int precision = 17,
const QString &ns =
"gml" )
const override;
191 QString
asJson(
int precision = 17 )
const override;
194 double length()
const override;
209 void draw( QPainter &p )
const override;
212 bool transformZ =
false )
override;
213 void transform(
const QTransform &t,
double zTranslate = 0.0,
double zScale = 1.0,
double mTranslate = 0.0,
double mScale = 1.0 )
override;
229 void sumUpArea(
double &sum SIP_OUT )
const override;
232 bool addZValue(
double zValue = 0 )
override;
233 bool addMValue(
double mValue = 0 )
override;
285 #endif // QGSLINESTRINGV2_H
virtual QgsCurve * reversed() const =0
Returns a reversed copy of the curve, where the direction of the curve has been flipped.
virtual QString asWkt(int precision=17) const =0
Returns a WKT representation of the geometry.
A rectangle specified with double values.
virtual QgsAbstractGeometry * snappedToGrid(double hSpacing, double vSpacing, double dSpacing=0, double mSpacing=0) const =0
Makes a new geometry with all the points or vertices snapped to the closest point of the grid...
virtual bool isEmpty() const
Returns true if the geometry is empty.
virtual bool removeDuplicateNodes(double epsilon=4 *DBL_EPSILON, bool useZValues=false)=0
Removes duplicate nodes from the geometry, wherever removing the nodes does not result in a degenerat...
virtual bool deleteVertex(QgsVertexId position)=0
Deletes a vertex within the geometry.
virtual QByteArray asWkb() const =0
Returns a WKB representation of the geometry.
virtual bool insertVertex(QgsVertexId position, const QgsPoint &vertex)=0
Inserts a vertex into the geometry.
virtual double vertexAngle(QgsVertexId vertex) const =0
Returns approximate angle at a vertex.
virtual bool addMValue(double mValue=0)=0
Adds a measure to the geometry, initialized to a preset value.
virtual void sumUpArea(double &sum) const =0
Sums up the area of the curve by iterating over the vertices (shoelace formula).
virtual QgsAbstractGeometry * createEmptyWithSameType() const =0
Creates a new geometry with the same class and same WKB type as the original and transfers ownership...
virtual QString asJson(int precision=17) const =0
Returns a GeoJSON representation of the geometry.
virtual double closestSegment(const QgsPoint &pt, QgsPoint &segmentPt, QgsVertexId &vertexAfter, int *leftOf=nullptr, double epsilon=4 *DBL_EPSILON) const =0
Searches for the closest segment of the geometry to a given point.
SegmentationToleranceType
Segmentation tolerance as maximum angle or maximum difference between approximation and circle...
virtual bool pointAt(int node, QgsPoint &point, QgsVertexId::VertexType &type) const =0
Returns the point and vertex id of a point within the curve.
virtual bool equals(const QgsCurve &other) const =0
Checks whether this curve exactly equals another curve.
virtual void transform(const QgsCoordinateTransform &ct, QgsCoordinateTransform::TransformDirection d=QgsCoordinateTransform::ForwardTransform, bool transformZ=false)=0
Transforms the geometry using a coordinate transform.
virtual QgsPoint centroid() const
Returns the centroid of the geometry.
virtual QgsPoint endPoint() const =0
Returns the end point of the curve.
virtual double length() const
Returns the length of the geometry.
Type
The WKB type describes the number of dimensions a geometry has.
virtual double segmentLength(QgsVertexId startVertex) const =0
Returns the length of the segment of the geometry which begins at startVertex.
Utility class for identifying a unique vertex within a geometry.
virtual double xAt(int index) const =0
Returns the x-coordinate of the specified node in the line string.
Abstract base class for curved geometry type.
Abstract base class for all geometries.
virtual int dimension() const =0
Returns the inherent dimension of the geometry.
QgsWkbTypes::Type wkbType() const
Returns the WKB type of the geometry.
Point geometry type, with support for z-dimension and m-values.
QVector< QgsPoint > QgsPointSequence
virtual void addToPainterPath(QPainterPath &path) const =0
Adds a curve to a painter path.
QgsCurve * toCurveType() const override
Returns the geometry converted to the more generic curve type.
virtual void clear()=0
Clears the geometry, ie reset it to a null geometry.
virtual QDomElement asGml2(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML2 representation of the geometry.
virtual bool moveVertex(QgsVertexId position, const QgsPoint &newPos)=0
Moves a vertex within the geometry.
QgsCurve * clone() const override=0
Clones the geometry by performing a deep copy.
virtual void draw(QPainter &p) const =0
Draws the geometry using the specified QPainter.
const QgsLineString * cast(const QgsAbstractGeometry *geom) const
Cast the geom to a QgsLineString.
virtual bool addZValue(double zValue=0)=0
Adds a z-dimension to the geometry, initialized to a preset value.
Line string geometry type, with support for z-dimension and m-values.
virtual QgsLineString * curveToLine(double tolerance=M_PI_2/90, SegmentationToleranceType toleranceType=MaximumAngle) const =0
Returns a new line string geometry corresponding to a segmentized approximation of the curve...
virtual QgsRectangle calculateBoundingBox() const
Default calculator for the minimal bounding box for the geometry.
virtual double yAt(int index) const =0
Returns the y-coordinate of the specified node in the line string.
virtual bool convertTo(QgsWkbTypes::Type type)
Converts the geometry to a specified type.
virtual QDomElement asGml3(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML3 representation of the geometry.
Compound curve geometry type.
virtual void drawAsPolygon(QPainter &p) const =0
Draws the curve as a polygon on the specified QPainter.
virtual bool dropMValue()=0
Drops any measure values which exist in the geometry.
virtual bool fromWkt(const QString &wkt)=0
Sets the geometry from a WKT string.
virtual QgsPoint startPoint() const =0
Returns the starting point of the curve.
virtual int nCoordinates() const
Returns the number of nodes contained in the geometry.
static Type flatType(Type type)
Returns the flat type for a WKB type.
virtual int numPoints() const =0
Returns the number of points in the curve.
double ANALYSIS_EXPORT leftOf(const QgsPoint &thepoint, const QgsPoint *p1, const QgsPoint *p2)
Returns whether 'thepoint' is left or right of the line from 'p1' to 'p2'. Negativ values mean left a...
virtual bool dropZValue()=0
Drops any z-dimensions which exist in the geometry.
virtual void points(QgsPointSequence &pt) const =0
Returns a list of points within the curve.
virtual QString geometryType() const =0
Returns a unique string representing the geometry type.
virtual bool fromWkb(QgsConstWkbPtr &wkb)=0
Sets the geometry from a WKB string.