QGIS API Documentation  2.14.0-Essen
qgscompoundcurvev2.h
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1 /***************************************************************************
2  qgscompoundcurvev2.h
3  ---------------------
4  begin : September 2014
5  copyright : (C) 2014 by Marco Hugentobler
6  email : marco at sourcepole dot ch
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSCOMPOUNDCURVEV2_H
19 #define QGSCOMPOUNDCURVEV2_H
20 
21 #include "qgscurvev2.h"
22 
29 class CORE_EXPORT QgsCompoundCurveV2: public QgsCurveV2
30 {
31  public:
33  QgsCompoundCurveV2( const QgsCompoundCurveV2& curve );
36 
37  virtual bool operator==( const QgsCurveV2& other ) const override;
38  virtual bool operator!=( const QgsCurveV2& other ) const override;
39 
40  virtual QString geometryType() const override { return "CompoundCurve"; }
41  virtual int dimension() const override { return 1; }
42  virtual QgsCompoundCurveV2* clone() const override;
43  virtual void clear() override;
44 
45  virtual bool fromWkb( QgsConstWkbPtr wkb ) override;
46  virtual bool fromWkt( const QString& wkt ) override;
47 
48  int wkbSize() const override;
49  unsigned char* asWkb( int& binarySize ) const override;
50  QString asWkt( int precision = 17 ) const override;
51  QDomElement asGML2( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const override;
52  QDomElement asGML3( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const override;
53  QString asJSON( int precision = 17 ) const override;
54 
55  //curve interface
56  virtual double length() const override;
57  virtual QgsPointV2 startPoint() const override;
58  virtual QgsPointV2 endPoint() const override;
59  virtual void points( QgsPointSequenceV2 &pts ) const override;
60  virtual int numPoints() const override;
61  virtual QgsLineStringV2* curveToLine() const override;
62 
65  int nCurves() const { return mCurves.size(); }
66 
69  const QgsCurveV2* curveAt( int i ) const;
70 
73  void addCurve( QgsCurveV2* c );
74 
78  void removeCurve( int i );
79 
82  void addVertex( const QgsPointV2& pt );
83 
84  void draw( QPainter& p ) const override;
90  void transform( const QTransform& t ) override;
91  void addToPainterPath( QPainterPath& path ) const override;
92  void drawAsPolygon( QPainter& p ) const override;
93 
94  virtual bool insertVertex( QgsVertexId position, const QgsPointV2& vertex ) override;
95  virtual bool moveVertex( QgsVertexId position, const QgsPointV2& newPos ) override;
96  virtual bool deleteVertex( QgsVertexId position ) override;
97 
98  virtual double closestSegment( const QgsPointV2& pt, QgsPointV2& segmentPt, QgsVertexId& vertexAfter, bool* leftOf, double epsilon ) const override;
99  bool pointAt( int node, QgsPointV2& point, QgsVertexId::VertexType& type ) const override;
100 
101  void sumUpArea( double& sum ) const override;
102 
104  void close();
105 
106  bool hasCurvedSegments() const override;
107 
111  double vertexAngle( QgsVertexId vertex ) const override;
112 
113  virtual QgsCompoundCurveV2* reversed() const override;
114 
115  virtual bool addZValue( double zValue = 0 ) override;
116  virtual bool addMValue( double mValue = 0 ) override;
117 
118  virtual bool dropZValue() override;
119  virtual bool dropMValue() override;
120 
121  protected:
122 
123  virtual QgsRectangle calculateBoundingBox() const override;
124 
125  private:
126  QList< QgsCurveV2* > mCurves;
129  QList< QPair<int, QgsVertexId> > curveVertexId( QgsVertexId id ) const;
130 
131 };
132 
133 #endif // QGSCOMPOUNDCURVEV2_H
A rectangle specified with double values.
Definition: qgsrectangle.h:35
virtual bool dropMValue()=0
Drops any measure values which exist in the geometry.
virtual bool operator==(const QgsCurveV2 &other) const =0
virtual QgsAbstractGeometryV2 & operator=(const QgsAbstractGeometryV2 &geom)
virtual double length() const
Returns the length of the geometry.
TransformDirection
Enum used to indicate the direction (forward or inverse) of the transform.
virtual QString asJSON(int precision=17) const =0
Returns a GeoJSON representation of the geometry.
virtual void addToPainterPath(QPainterPath &path) const =0
Adds a curve to a painter path.
virtual bool dropZValue()=0
Drops any z-dimensions which exist in the geometry.
virtual QgsCurveV2 * clone() const override=0
Clones the geometry by performing a deep copy.
virtual int wkbSize() const =0
Returns the size of the WKB representation of the geometry.
virtual bool addMValue(double mValue=0)=0
Adds a measure to the geometry, initialized to a preset value.
virtual void clear()=0
Clears the geometry, ie reset it to a null geometry.
virtual int numPoints() const =0
Returns the number of points in the curve.
virtual QgsCurveV2 * reversed() const =0
Returns a reversed copy of the curve, where the direction of the curve has been flipped.
Utility class for identifying a unique vertex within a geometry.
Line string geometry type, with support for z-dimension and m-values.
virtual QgsRectangle calculateBoundingBox() const
Default calculator for the minimal bounding box for the geometry.
virtual bool fromWkb(QgsConstWkbPtr wkb)=0
Sets the geometry from a WKB string.
virtual QString geometryType() const override
Returns a unique string representing the geometry type.
Point geometry type, with support for z-dimension and m-values.
Definition: qgspointv2.h:34
virtual bool hasCurvedSegments() const
Returns true if the geometry contains curved segments.
virtual unsigned char * asWkb(int &binarySize) const =0
Returns a WKB representation of the geometry.
virtual void transform(const QgsCoordinateTransform &ct, QgsCoordinateTransform::TransformDirection d=QgsCoordinateTransform::ForwardTransform)=0
Transforms the geometry using a coordinate transform.
virtual bool addZValue(double zValue=0)=0
Adds a z-dimension to the geometry, initialized to a preset value.
virtual QDomElement asGML3(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML3 representation of the geometry.
virtual bool fromWkt(const QString &wkt)=0
Sets the geometry from a WKT string.
Compound curve geometry type.
virtual bool pointAt(int node, QgsPointV2 &point, QgsVertexId::VertexType &type) const =0
Returns the point and vertex id of a point within the curve.
virtual void sumUpArea(double &sum) const =0
Calculates the area of the curve.
virtual double vertexAngle(QgsVertexId vertex) const =0
Returns approximate angle at a vertex.
virtual QgsLineStringV2 * curveToLine() const =0
Returns a new line string geometry corresponding to a segmentized approximation of the curve...
virtual QgsPointV2 endPoint() const =0
Returns the end point of the curve.
virtual bool deleteVertex(QgsVertexId position)=0
Deletes a vertex within the geometry.
virtual bool insertVertex(QgsVertexId position, const QgsPointV2 &vertex)=0
Inserts a vertex into the geometry.
virtual bool operator!=(const QgsCurveV2 &other) const =0
Class for doing transforms between two map coordinate systems.
virtual QString asWkt(int precision=17) const =0
Returns a WKT representation of the geometry.
virtual QgsPointV2 startPoint() const =0
Returns the starting point of the curve.
virtual void draw(QPainter &p) const =0
Draws the geometry using the specified QPainter.
virtual void drawAsPolygon(QPainter &p) const =0
Draws the curve as a polygon on the specified QPainter.
double ANALYSIS_EXPORT leftOf(Point3D *thepoint, Point3D *p1, Point3D *p2)
Returns whether &#39;thepoint&#39; is left or right of the line from &#39;p1&#39; to &#39;p2&#39;.
virtual QDomElement asGML2(QDomDocument &doc, int precision=17, const QString &ns="gml") const =0
Returns a GML2 representation of the geometry.
virtual int dimension() const override
Returns the inherent dimension of the geometry.
Abstract base class for curved geometry type.
Definition: qgscurvev2.h:32
virtual bool moveVertex(QgsVertexId position, const QgsPointV2 &newPos)=0
Moves a vertex within the geometry.
virtual double closestSegment(const QgsPointV2 &pt, QgsPointV2 &segmentPt, QgsVertexId &vertexAfter, bool *leftOf, double epsilon) const =0
Searches for the closest segment of the geometry to a given point.
virtual void points(QgsPointSequenceV2 &pt) const =0
Returns a list of points within the curve.
int nCurves() const
Returns the number of curves in the geometry.