QGIS API Documentation  3.21.0-Master (909859188c)
qgsquadrilateral.h
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1 /***************************************************************************
2  qgsquadrilateral.h
3  -------------------
4  begin : November 2018
5  copyright : (C) 2018 by Loïc Bartoletti
6  email : loic dot bartoletti at oslandia dot com
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 QGSQUADRILATERAL_H
19 #define QGSQUADRILATERAL_H
20 
21 
22 #include "qgis_core.h"
23 #include "qgspoint.h"
24 #include "qgspolygon.h"
25 #include "qgslinestring.h"
26 
36 class CORE_EXPORT QgsQuadrilateral
37 {
38  public:
39 
44 
53  QgsQuadrilateral( const QgsPoint &p1, const QgsPoint &p2, const QgsPoint &p3, const QgsPoint &p4 ) SIP_HOLDGIL;
54 
63  explicit QgsQuadrilateral( const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3, const QgsPointXY &p4 ) SIP_HOLDGIL;
64 
65 
71  {
74  };
75 
89  static QgsQuadrilateral rectangleFrom3Points( const QgsPoint &p1, const QgsPoint &p2, const QgsPoint &p3, ConstructionOption mode ) SIP_HOLDGIL;
90 
98  static QgsQuadrilateral rectangleFromExtent( const QgsPoint &p1, const QgsPoint &p2 ) SIP_HOLDGIL;
99 
100 #ifndef SIP_RUN
101 
105  static constexpr auto &rectangleFromDiagonal = rectangleFromExtent;
106 #endif
107 
114  static QgsQuadrilateral squareFromDiagonal( const QgsPoint &p1, const QgsPoint &p2 ) SIP_HOLDGIL;
115 
123  static QgsQuadrilateral rectangleFromCenterPoint( const QgsPoint &center, const QgsPoint &point ) SIP_HOLDGIL;
124 
129  static QgsQuadrilateral fromRectangle( const QgsRectangle &rectangle ) SIP_HOLDGIL;
130 
131  // TODO:
132  // Rhombus
133 
139  bool equals( const QgsQuadrilateral &other, double epsilon = 4 * std::numeric_limits<double>::epsilon() ) const SIP_HOLDGIL;
140  bool operator==( const QgsQuadrilateral &other ) const SIP_HOLDGIL;
141  bool operator!=( const QgsQuadrilateral &other ) const SIP_HOLDGIL;
142 
148  bool isValid() const SIP_HOLDGIL;
149 
153  enum Point
154  {
159  };
160 
166  bool setPoint( const QgsPoint &newPoint, Point index ) SIP_HOLDGIL;
167 
177  bool setPoints( const QgsPoint &p1, const QgsPoint &p2, const QgsPoint &p3, const QgsPoint &p4 ) SIP_HOLDGIL;
178 
182  QgsPointSequence points() const;
183 
187  QgsPolygon *toPolygon( bool force2D = false ) const SIP_FACTORY;
188 
192  QgsLineString *toLineString( bool force2D = false ) const SIP_FACTORY;
193 
198  QString toString( int pointPrecision = 17 ) const;
199 
203  double area() const SIP_HOLDGIL;
204 
208  double perimeter() const SIP_HOLDGIL;
209 #ifdef SIP_RUN
210  SIP_PYOBJECT __repr__();
211  % MethodCode
212  QString str = QStringLiteral( "<QgsQuadrilateral: %1>" ).arg( sipCpp->toString() );
213  sipRes = PyUnicode_FromString( str.toUtf8().constData() );
214  % End
215 #endif
216  private:
217  QgsPoint mPoint1, mPoint2, mPoint3, mPoint4;
218 };
219 
220 #endif // QGSQUADRILATERAL_H
Line string geometry type, with support for z-dimension and m-values.
Definition: qgslinestring.h:44
A class to represent a 2D point.
Definition: qgspointxy.h:59
Point geometry type, with support for z-dimension and m-values.
Definition: qgspoint.h:49
Polygon geometry type.
Definition: qgspolygon.h:34
Quadrilateral geometry type.
QgsQuadrilateral() SIP_HOLDGIL
Constructor for an empty quadrilateral geometry.
Point
Simple enumeration to ensure indices in setPoint.
ConstructionOption
A quadrilateral can be constructed from 3 points where the second distance can be determined by the t...
@ Distance
Second distance is equal to the distance between 2nd and 3rd point.
@ Projected
Second distance is equal to the distance of the perpendicualr projection of the 3rd point on the segm...
A rectangle specified with double values.
Definition: qgsrectangle.h:42
CORE_EXPORT std::unique_ptr< QgsPolygon > toPolygon(const QgsMeshFace &face, const QVector< QgsMeshVertex > &vertices)
Returns face as polygon geometry, caller is responsible for delete.
#define str(x)
Definition: qgis.cpp:37
#define SIP_HOLDGIL
Definition: qgis_sip.h:157
#define SIP_FACTORY
Definition: qgis_sip.h:76
QVector< QgsPoint > QgsPointSequence