QGIS API Documentation  3.17.0-Master (8af46bc54f)
qgsgeometryfactory.h
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1 /***************************************************************************
2  qgsgeometryfactory.h
3  -----------------------
4  begin : September 2014
5  copyright : (C) 2014 by Marco Hugentobler
6  email : marco at sourcepole dot ch
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 QGSGEOMETRYFACTORY_H
19 #define QGSGEOMETRYFACTORY_H
20 
21 #define SIP_NO_FILE
22 
23 #include "qgis_core.h"
24 #include "qgswkbtypes.h"
25 #include <QString>
26 #include <memory>
27 
29 class QgsLineString;
30 class QgsConstWkbPtr;
31 class QgsRectangle;
33 class QgsMultiPoint;
34 class QgsMultiLineString;
35 class QgsPolygon;
37 
38 //compatibility with old classes
39 #include "qgspointxy.h"
40 typedef QVector<QgsPointXY> QgsPolylineXY;
41 typedef QVector<QgsPolylineXY> QgsPolygonXY;
42 typedef QVector<QgsPointXY> QgsMultiPointXY;
43 typedef QVector<QgsPolylineXY> QgsMultiPolylineXY;
44 typedef QVector<QgsPolygonXY> QgsMultiPolygonXY;
45 
53 class CORE_EXPORT QgsGeometryFactory
54 {
55  public:
56 
61  static std::unique_ptr< QgsAbstractGeometry > geomFromWkb( QgsConstWkbPtr &wkb );
62 
66  static std::unique_ptr< QgsAbstractGeometry > geomFromWkt( const QString &text );
67 
69  static std::unique_ptr< QgsAbstractGeometry > fromPointXY( const QgsPointXY &point );
71  static std::unique_ptr<QgsMultiPoint> fromMultiPointXY( const QgsMultiPointXY &multipoint );
73  static std::unique_ptr< QgsAbstractGeometry > fromPolylineXY( const QgsPolylineXY &polyline );
75  static std::unique_ptr<QgsMultiLineString> fromMultiPolylineXY( const QgsMultiPolylineXY &multiline );
77  static std::unique_ptr<QgsPolygon> fromPolygonXY( const QgsPolygonXY &polygon );
79  static std::unique_ptr<QgsMultiPolygon> fromMultiPolygonXY( const QgsMultiPolygonXY &multipoly );
81  static std::unique_ptr< QgsAbstractGeometry > geomFromWkbType( QgsWkbTypes::Type t );
82 
87  static std::unique_ptr< QgsGeometryCollection > createCollectionOfType( QgsWkbTypes::Type type );
88 
89  private:
90  static std::unique_ptr< QgsLineString > linestringFromPolyline( const QgsPolylineXY &polyline );
91 };
92 
93 #endif // QGSGEOMETRYFACTORY_H
A rectangle specified with double values.
Definition: qgsrectangle.h:41
Multi point geometry collection.
Definition: qgsmultipoint.h:29
QVector< QgsPolylineXY > QgsMultiPolylineXY
QVector< QgsPolylineXY > QgsPolygonXY
QVector< QgsPolygonXY > QgsMultiPolygonXY
A class to represent a 2D point.
Definition: qgspointxy.h:43
QVector< QgsPolylineXY > QgsPolygonXY
Polygon: first item of the list is outer ring, inner rings (if any) start from second item...
Definition: qgsgeometry.h:75
Multi line string geometry collection.
Contains geometry creation routines.
QVector< QgsPointXY > QgsMultiPointXY
A collection of QgsPoints that share a common collection of attributes.
Definition: qgsgeometry.h:81
QVector< QgsPolygonXY > QgsMultiPolygonXY
A collection of QgsPolygons that share a common collection of attributes.
Definition: qgsgeometry.h:92
QVector< QgsPolylineXY > QgsMultiPolylineXY
A collection of QgsPolylines that share a common collection of attributes.
Definition: qgsgeometry.h:85
Type
The WKB type describes the number of dimensions a geometry has.
Definition: qgswkbtypes.h:69
Geometry collection.
QVector< QgsPointXY > QgsPolylineXY
Abstract base class for all geometries.
QVector< QgsPointXY > QgsMultiPointXY
QVector< QgsPointXY > QgsPolylineXY
Polyline as represented as a vector of two-dimensional points.
Definition: qgsgeometry.h:51
Multi polygon geometry collection.
Line string geometry type, with support for z-dimension and m-values.
Definition: qgslinestring.h:43
Polygon geometry type.
Definition: qgspolygon.h:33