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