QGIS API Documentation  3.20.0-Odense (decaadbb31)
qgsspatialindexkdbush.cpp
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1 /***************************************************************************
2  qgsspatialindexkdbush.cpp
3  -------------------
4  begin : July 2018
5  copyright : (C) 2018 by Nyall Dawson
6  email : nyall dot dawson at gmail 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 #include "qgsspatialindexkdbush.h"
19 #include "qgsfeatureiterator.h"
20 #include "qgsfeedback.h"
21 #include "qgsfeaturesource.h"
23 
25  : d( new QgsSpatialIndexKDBushPrivate( fi, feedback ) )
26 {
27 
28 }
29 
31  : d( new QgsSpatialIndexKDBushPrivate( source, feedback ) )
32 {
33 }
34 
36 {
37  d->ref.ref();
38 }
39 
41 {
42  if ( this != &other )
43  {
44  if ( !d->ref.deref() )
45  {
46  delete d;
47  }
48 
49  d = other.d;
50  d->ref.ref();
51  }
52  return *this;
53 }
54 
56 {
57  if ( !d->ref.deref() )
58  delete d;
59 }
60 
61 QList<QgsSpatialIndexKDBushData> QgsSpatialIndexKDBush::within( const QgsPointXY &point, double radius ) const
62 {
63  QList<QgsSpatialIndexKDBushData> result;
64  d->index->within( point.x(), point.y(), radius, [&result]( const QgsSpatialIndexKDBushData & p ) { result << p; } );
65  return result;
66 }
67 
68 void QgsSpatialIndexKDBush::within( const QgsPointXY &point, double radius, const std::function<void( QgsSpatialIndexKDBushData )> &visitor )
69 {
70  d->index->within( point.x(), point.y(), radius, visitor );
71 }
72 
74 {
75  return d->index->size();
76 }
77 
78 QList<QgsSpatialIndexKDBushData> QgsSpatialIndexKDBush::intersects( const QgsRectangle &rectangle ) const
79 {
80  QList<QgsSpatialIndexKDBushData> result;
81  d->index->range( rectangle.xMinimum(),
82  rectangle.yMinimum(),
83  rectangle.xMaximum(),
84  rectangle.yMaximum(), [&result]( const QgsSpatialIndexKDBushData & p ) { result << p; } );
85  return result;
86 }
87 
88 void QgsSpatialIndexKDBush::intersects( const QgsRectangle &rectangle, const std::function<void( QgsSpatialIndexKDBushData )> &visitor ) const
89 {
90  d->index->range( rectangle.xMinimum(),
91  rectangle.yMinimum(),
92  rectangle.xMaximum(),
93  rectangle.yMaximum(), visitor );
94 }
Wrapper for iterator of features from vector data provider or vector layer.
An interface for objects which provide features via a getFeatures method.
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition: qgsfeedback.h:45
A class to represent a 2D point.
Definition: qgspointxy.h:59
double y
Definition: qgspointxy.h:63
Q_GADGET double x
Definition: qgspointxy.h:62
A rectangle specified with double values.
Definition: qgsrectangle.h:42
double yMaximum() const SIP_HOLDGIL
Returns the y maximum value (top side of rectangle).
Definition: qgsrectangle.h:193
double xMaximum() const SIP_HOLDGIL
Returns the x maximum value (right side of rectangle).
Definition: qgsrectangle.h:183
double xMinimum() const SIP_HOLDGIL
Returns the x minimum value (left side of rectangle).
Definition: qgsrectangle.h:188
double yMinimum() const SIP_HOLDGIL
Returns the y minimum value (bottom side of rectangle).
Definition: qgsrectangle.h:198
A container for data stored inside a QgsSpatialIndexKDBush index.
A very fast static spatial index for 2D points based on a flat KD-tree.
QgsSpatialIndexKDBush(QgsFeatureIterator &fi, QgsFeedback *feedback=nullptr)
Constructor - creates KDBush index and bulk loads it with features from the iterator.
qgssize size() const
Returns the size of the index, i.e.
QList< QgsSpatialIndexKDBushData > intersects(const QgsRectangle &rectangle) const
Returns the list of features which fall within the specified rectangle.
QgsSpatialIndexKDBush & operator=(const QgsSpatialIndexKDBush &other)
Assignment operator.
QList< QgsSpatialIndexKDBushData > within(const QgsPointXY &point, double radius) const
Returns the list of features which are within the given search radius of point.
unsigned long long qgssize
Qgssize is used instead of size_t, because size_t is stdlib type, unknown by SIP, and it would be har...
Definition: qgis.h:1051