QGIS API Documentation  2.17.0-Master (973e4b0)
qgsrectangle.h
Go to the documentation of this file.
1 /***************************************************************************
2  qgsrectangle.h - description
3  -------------------
4  begin : Sat Jun 22 2002
5  copyright : (C) 2002 by Gary E.Sherman
6  email : sherman at mrcc.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 QGSRECTANGLE_H
19 #define QGSRECTANGLE_H
20 
21 #include <iosfwd>
22 #include <QDomDocument>
23 
24 class QString;
25 class QRectF;
26 #include "qgspoint.h"
27 
28 
35 class CORE_EXPORT QgsRectangle
36 {
37  public:
39  QgsRectangle( double xmin = 0, double ymin = 0, double xmax = 0, double ymax = 0 );
41  QgsRectangle( const QgsPoint & p1, const QgsPoint & p2 );
43  QgsRectangle( const QRectF & qRectF );
45  QgsRectangle( const QgsRectangle &other );
47  ~QgsRectangle();
50  void set( const QgsPoint& p1, const QgsPoint& p2 );
53  void set( double xmin, double ymin, double xmax, double ymax );
55  void setXMinimum( double x );
57  void setXMaximum( double x );
59  void setYMinimum( double y );
61  void setYMaximum( double y );
64  void setMinimal();
66  double xMaximum() const;
68  double xMinimum() const;
70  double yMaximum() const;
72  double yMinimum() const;
74  void normalize();
76  double width() const;
78  double height() const;
80  QgsPoint center() const;
82  void scale( double scaleFactor, const QgsPoint *c = nullptr );
83  void scale( double scaleFactor, double centerX, double centerY );
85  void grow( double delta );
87  void include( const QgsPoint& p );
90  QgsRectangle buffer( double width );
92  QgsRectangle intersect( const QgsRectangle *rect ) const;
94  bool intersects( const QgsRectangle& rect ) const;
96  bool contains( const QgsRectangle& rect ) const;
98  bool contains( const QgsPoint &p ) const;
100  void combineExtentWith( const QgsRectangle& rect );
102  void combineExtentWith( double x, double y );
105  bool isEmpty() const;
109  bool isNull() const;
111  QString asWktCoordinates() const;
113  QString asWktPolygon() const;
115  QRectF toRectF() const;
117  QString toString( bool automaticPrecision = false ) const;
119  QString toString( int thePrecision ) const;
121  QString asPolygon() const;
125  bool operator==( const QgsRectangle &r1 ) const;
129  bool operator!=( const QgsRectangle &r1 ) const;
133  QgsRectangle & operator=( const QgsRectangle &r1 );
134 
136  void unionRect( const QgsRectangle& rect );
137 
141  bool isFinite() const;
142 
144  void invert();
145 
146  protected:
147 
148  // These are protected instead of private so that things like
149  // the QgsPostGisBox3d can get at them.
150 
151  double xmin;
152  double ymin;
153  double xmax;
154  double ymax;
155 
156 };
157 
159 CORE_EXPORT QDataStream& operator<<( QDataStream& out, const QgsRectangle& rectangle );
161 CORE_EXPORT QDataStream& operator>>( QDataStream& in, QgsRectangle& rectangle );
162 
164 {
165 }
166 
167 inline void QgsRectangle::setXMinimum( double x )
168 {
169  xmin = x;
170 }
171 
172 inline void QgsRectangle::setXMaximum( double x )
173 {
174  xmax = x;
175 }
176 
177 inline void QgsRectangle::setYMinimum( double y )
178 {
179  ymin = y;
180 }
181 
182 inline void QgsRectangle::setYMaximum( double y )
183 {
184  ymax = y;
185 }
186 
187 inline double QgsRectangle::xMaximum() const
188 {
189  return xmax;
190 }
191 
192 inline double QgsRectangle::xMinimum() const
193 {
194  return xmin;
195 }
196 
197 inline double QgsRectangle::yMaximum() const
198 {
199  return ymax;
200 }
201 
202 inline double QgsRectangle::yMinimum() const
203 {
204  return ymin;
205 }
206 
207 inline double QgsRectangle::width() const
208 {
209  return xmax - xmin;
210 }
211 
212 inline double QgsRectangle::height() const
213 {
214  return ymax - ymin;
215 }
216 
218 {
219  return QgsPoint( xmin + width() / 2, ymin + height() / 2 );
220 }
221 inline std::ostream& operator << ( std::ostream& os, const QgsRectangle &r )
222 {
223  return os << r.toString().toLocal8Bit().data();
224 }
225 
226 #endif // QGSRECTANGLE_H
A rectangle specified with double values.
Definition: qgsrectangle.h:35
void setXMaximum(double x)
Set the maximum x value.
Definition: qgsrectangle.h:172
bool operator==(const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)
double yMaximum() const
Get the y maximum value (top side of rectangle)
Definition: qgsrectangle.h:197
bool operator!=(const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)
~QgsRectangle()
Destructor.
Definition: qgsrectangle.h:163
CORE_EXPORT QDataStream & operator<<(QDataStream &out, const QgsRectangle &rectangle)
Writes the list rectangle to stream out.
double yMinimum() const
Get the y minimum value (bottom side of rectangle)
Definition: qgsrectangle.h:202
double xMaximum() const
Get the x maximum value (right side of rectangle)
Definition: qgsrectangle.h:187
void setYMinimum(double y)
Set the minimum y value.
Definition: qgsrectangle.h:177
A class to represent a point.
Definition: qgspoint.h:117
QByteArray toLocal8Bit() const
CORE_EXPORT QDataStream & operator>>(QDataStream &in, QgsRectangle &rectangle)
Reads a rectangle from stream in into rectangle.
void setYMaximum(double y)
Set the maximum y value.
Definition: qgsrectangle.h:182
char * data()
double width() const
Width of the rectangle.
Definition: qgsrectangle.h:207
QString toString(bool automaticPrecision=false) const
returns string representation of form xmin,ymin xmax,ymax
double xMinimum() const
Get the x minimum value (left side of rectangle)
Definition: qgsrectangle.h:192
QgsPoint center() const
Center point of the rectangle.
Definition: qgsrectangle.h:217
bool isNull(const QVariant &v)
void setXMinimum(double x)
Set the minimum x value.
Definition: qgsrectangle.h:167
double height() const
Height of the rectangle.
Definition: qgsrectangle.h:212