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https://github.com/qgis/QGIS.git
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5f1bb6cf1f
- when creating geometry from WKT, upgrade dimensionality of geometry if coordinates are 3/4 dimensional - match dimensionality of collections to child dimensionality - fix area of curves was non-zero if curve is closed - don't consider m values when testing for curve closedness - add unit tests for closedness - add unit tests for CircularStrings, CompoundCurves, CurvePolygon, tests with geometries with Z/M values
99 lines
3.4 KiB
C++
99 lines
3.4 KiB
C++
/***************************************************************************
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qgscurvev2.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 QGSCURVEV2_H
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#define QGSCURVEV2_H
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#include "qgsabstractgeometryv2.h"
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#include "qgspointv2.h"
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class QgsLineStringV2;
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class QPainterPath;
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/** \ingroup core
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* \class QgsCurveV2
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* \brief Abstract base class for curved geometry type
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* \note added in QGIS 2.10
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*/
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class CORE_EXPORT QgsCurveV2: public QgsAbstractGeometryV2
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{
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public:
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QgsCurveV2();
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virtual ~QgsCurveV2();
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/** Returns the starting point of the curve.
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* @see endPoint
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*/
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virtual QgsPointV2 startPoint() const = 0;
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/** Returns the end point of the curve.
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* @see startPoint
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*/
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virtual QgsPointV2 endPoint() const = 0;
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/** Returns true if the curve is closed.
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*/
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virtual bool isClosed() const;
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/** Returns true if the curve is a ring.
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*/
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virtual bool isRing() const;
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/** Returns a new line string geometry corresponding to a segmentized approximation
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* of the curve.
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*/
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virtual QgsLineStringV2* curveToLine() const = 0;
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/** Adds a curve to a painter path.
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*/
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virtual void addToPainterPath( QPainterPath& path ) const = 0;
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/** Draws the curve as a polygon on the specified QPainter.
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* @param p destination QPainter
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*/
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virtual void drawAsPolygon( QPainter& p ) const = 0;
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/** Returns a list of points within the curve.
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*/
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virtual void points( QList<QgsPointV2>& pt ) const = 0;
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/** Returns the number of points in the curve.
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*/
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virtual int numPoints() const = 0;
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/** Calculates the area of the curve. Derived classes should override this
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* to return the correct area of the curve.
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*/
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virtual void sumUpArea( double& sum ) const = 0;
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virtual void coordinateSequence( QList< QList< QList< QgsPointV2 > > >& coord ) const override;
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virtual bool nextVertex( QgsVertexId& id, QgsPointV2& vertex ) const override;
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/** Returns the point and vertex id of a point within the curve.
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*/
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virtual bool pointAt( int i, QgsPointV2& vertex, QgsVertexId::VertexType& type ) const = 0;
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QgsAbstractGeometryV2* segmentize() const override;
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virtual int vertexCount( int /*part*/ = 0, int /*ring*/ = 0 ) const override { return numPoints(); }
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virtual int ringCount( int /*part*/ = 0 ) const override { return numPoints() > 0 ? 1 : 0; }
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virtual int partCount() const override { return numPoints() > 0 ? 1 : 0; }
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virtual QgsPointV2 vertexAt( const QgsVertexId& id ) const override;
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};
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#endif // QGSCURVEV2_H
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