qgstriangle.h

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/***************************************************************************
                         qgstriangle.h
                         -------------------
    begin                : January 2017
    copyright            : (C) 2017 by Loïc Bartoletti
    email                : lbartoletti at tuxfamily dot org
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSTRIANGLE_H
#define QGSTRIANGLE_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgspolygon.h"
#include "qgscircle.h"
#include "qgslinestring.h"
 
class CORE_EXPORT QgsTriangle : public QgsPolygon
{
  public:
    QgsTriangle();
 
    QgsTriangle( const QgsPoint &p1, const QgsPoint &p2, const QgsPoint &p3 );
 
    explicit QgsTriangle( const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3 );
 
    explicit QgsTriangle( QPointF p1, QPointF p2, QPointF p3 );
 
    bool operator==( const QgsTriangle &other ) const;
    bool operator!=( const QgsTriangle &other ) const;
 
    QString geometryType() const override;
    QgsTriangle *clone() const override SIP_FACTORY;
    void clear() override;
 
    bool fromWkb( QgsConstWkbPtr &wkbPtr ) override;
 
    bool fromWkt( const QString &wkt ) override;
 
    // inherited: QString asWkt( int precision = 17 ) const;
    // inherited (as a polygon): QDomElement asGML2( QDomDocument &doc, int precision = 17, const QString &ns = "gml" ) const;
    QDomElement asGml3( QDomDocument &doc, int precision = 17, const QString &ns = "gml", QgsAbstractGeometry::AxisOrder axisOrder = QgsAbstractGeometry::AxisOrder::XY ) const override;
 
    QgsPolygon *surfaceToPolygon() const override SIP_FACTORY;
 
    QgsCurvePolygon *toCurveType() const override SIP_FACTORY;
 
    void addInteriorRing( QgsCurve *ring SIP_TRANSFER ) override;
 
    void setInteriorRings( const QVector< QgsCurve *> &rings ) = delete;
    bool deleteVertex( QgsVertexId position ) override;
    bool insertVertex( QgsVertexId position, const QgsPoint &vertex ) override;
    bool moveVertex( QgsVertexId vId, const QgsPoint &newPos ) override;
 
    void setExteriorRing( QgsCurve *ring SIP_TRANSFER ) override;
 
    QgsCurve *boundary() const override SIP_FACTORY;
 
    // inherited: double pointDistanceToBoundary( double x, double y ) const;
 
    QgsPoint vertexAt( int atVertex ) const;
 
    QVector<double> lengths() const;
 
    QVector<double> angles() const;
 
    bool isDegenerate();
 
    bool isIsocele( double lengthTolerance = 0.0001 ) const;
 
    bool isEquilateral( double lengthTolerance = 0.0001 ) const;
 
    bool isRight( double angleTolerance = 0.0001 ) const;
 
    bool isScalene( double lengthTolerance = 0.0001 ) const;
 
    QVector<QgsLineString> altitudes() const;
 
    QVector<QgsLineString> medians() const;
 
    QVector<QgsLineString> bisectors( double lengthTolerance = 0.0001 ) const;
 
    QgsTriangle medial() const;
 
    QgsPoint orthocenter( double lengthTolerance = 0.0001 ) const;
 
    QgsPoint circumscribedCenter() const;
 
    double circumscribedRadius() const;
 
    QgsCircle circumscribedCircle() const;
 
    QgsPoint inscribedCenter() const;
 
    double inscribedRadius() const;
 
    QgsCircle inscribedCircle() const;
 
#ifndef SIP_RUN
 
    inline const QgsTriangle *cast( const QgsAbstractGeometry *geom ) const
    {
      if ( geom && QgsWkbTypes::flatType( geom->wkbType() ) == QgsWkbTypes::Triangle )
        return static_cast<const QgsTriangle *>( geom );
      return nullptr;
    }
#endif
 
    QgsTriangle *createEmptyWithSameType() const override SIP_FACTORY;
 
 
};
#endif // QGSTRIANGLE_H