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qgscompoundcurvev2.h
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qgscompoundcurvev2.h
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/***************************************************************************
qgscompoundcurvev2.h
---------------------
begin : September 2014
copyright : (C) 2014 by Marco Hugentobler
email : marco at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSCOMPOUNDCURVEV2_H
#define QGSCOMPOUNDCURVEV2_H
#include "qgscurvev2.h"
/** \ingroup core
* \class QgsCompoundCurveV2
* \brief Compound curve geometry type
* \note added in QGIS 2.10
* \note this API is not considered stable and may change for 2.12
*/
class CORE_EXPORT QgsCompoundCurveV2: public QgsCurveV2
{
public:
QgsCompoundCurveV2();
QgsCompoundCurveV2( const QgsCompoundCurveV2& curve );
QgsCompoundCurveV2& operator=( const QgsCompoundCurveV2& curve );
~QgsCompoundCurveV2();
virtual QString geometryType() const override { return "CompoundCurve"; }
virtual int dimension() const override { return 1; }
virtual QgsAbstractGeometryV2* clone() const override;
virtual void clear() override;
virtual QgsRectangle calculateBoundingBox() const override;
virtual bool fromWkb( const unsigned char* wkb ) override;
virtual bool fromWkt( const QString& wkt ) override;
int wkbSize() const override;
unsigned char* asWkb( int& binarySize ) const override;
QString asWkt( int precision = 17 ) const override;
QDomElement asGML2( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const override;
QDomElement asGML3( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const override;
QString asJSON( int precision = 17 ) const override;
//curve interface
virtual double length() const override;
virtual QgsPointV2 startPoint() const override;
virtual QgsPointV2 endPoint() const override;
virtual void points( QList<QgsPointV2>& pts ) const override;
virtual int numPoints() const override;
virtual QgsLineStringV2* curveToLine() const override;
/** Returns the number of curves in the geometry.
*/
int nCurves() const { return mCurves.size(); }
/** Returns the curve at the specified index.
*/
const QgsCurveV2* curveAt( int i ) const;
/** Adds a curve to the geometr (takes ownership)
*/
void addCurve( QgsCurveV2* c );
/** Removes a curve from the geometry.
* @param i index of curve to remove
*/
void removeCurve( int i );
/** Adds a vertex to the end of the geometry.
*/
void addVertex( const QgsPointV2& pt );
void draw( QPainter& p ) const override;
/** Transforms the geometry using a coordinate transform
* @param ct coordinate transform
@param d transformation direction
*/
void transform( const QgsCoordinateTransform& ct, QgsCoordinateTransform::TransformDirection d = QgsCoordinateTransform::ForwardTransform ) override;
void transform( const QTransform& t ) override;
void addToPainterPath( QPainterPath& path ) const override;
void drawAsPolygon( QPainter& p ) const override;
virtual bool insertVertex( const QgsVertexId& position, const QgsPointV2& vertex ) override;
virtual bool moveVertex( const QgsVertexId& position, const QgsPointV2& newPos ) override;
virtual bool deleteVertex( const QgsVertexId& position ) override;
virtual double closestSegment( const QgsPointV2& pt, QgsPointV2& segmentPt, QgsVertexId& vertexAfter, bool* leftOf, double epsilon ) const override;
bool pointAt( int i, QgsPointV2& vertex, QgsVertexId::VertexType& type ) const override;
void sumUpArea( double& sum ) const override;
/** Appends first point if not already closed.*/
void close();
bool hasCurvedSegments() const override;
private:
QList< QgsCurveV2* > mCurves;
/** Turns a vertex id for the compound curve into one or more ids for the subcurves
@return the index of the subcurve or -1 in case of error*/
QList< QPair<int, QgsVertexId> > curveVertexId( const QgsVertexId& id ) const;
};
#endif // QGSCOMPOUNDCURVEV2_H