QGIS API Documentation  3.25.0-Master (6b426f5f8a)
qgseptpointcloudindex.h
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1 /***************************************************************************
2  qgspointcloudindex.h
3  --------------------
4  begin : October 2020
5  copyright : (C) 2020 by Peter Petrik
6  email : zilolv 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 #ifndef QGSEPTPOINTCLOUDINDEX_H
19 #define QGSEPTPOINTCLOUDINDEX_H
20 
21 #include <QObject>
22 #include <QString>
23 #include <QHash>
24 #include <QStringList>
25 #include <QVector>
26 #include <QList>
27 #include <QFile>
28 
29 #include "qgspointcloudindex.h"
30 #include "qgspointcloudattribute.h"
31 #include "qgsstatisticalsummary.h"
32 #include "qgis_sip.h"
33 
35 #define SIP_NO_FILE
36 
38 
39 class CORE_EXPORT QgsEptPointCloudIndex: public QgsPointCloudIndex
40 {
41  Q_OBJECT
42  public:
43 
44  explicit QgsEptPointCloudIndex();
45  ~QgsEptPointCloudIndex();
46 
47  void load( const QString &fileName ) override;
48 
49  QgsPointCloudBlock *nodeData( const IndexedPointCloudNode &n, const QgsPointCloudRequest &request ) override;
51 
52  QgsCoordinateReferenceSystem crs() const override;
53  qint64 pointCount() const override;
54  QVariant metadataStatistic( const QString &attribute, QgsStatisticalSummary::Statistic statistic ) const override;
55  QVariantList metadataClasses( const QString &attribute ) const override;
56  QVariant metadataClassStatistic( const QString &attribute, const QVariant &value, QgsStatisticalSummary::Statistic statistic ) const override;
57  QVariantMap originalMetadata() const override { return mOriginalMetadata; }
58 
59  bool isValid() const override;
61 
62  protected:
63  bool loadSchema( const QByteArray &dataJson );
64  void loadManifest( const QByteArray &manifestJson );
65  bool loadSchema( QFile &f );
66  bool loadHierarchy();
67 
68  bool mIsValid = false;
69  QString mDataType;
70  QString mDirectory;
71  QString mWkt;
72 
73  qint64 mPointCount = 0;
74 
75  struct AttributeStatistics
76  {
77  int count = -1;
78  QVariant minimum;
79  QVariant maximum;
80  double mean = std::numeric_limits< double >::quiet_NaN();
81  double stDev = std::numeric_limits< double >::quiet_NaN();
82  double variance = std::numeric_limits< double >::quiet_NaN();
83  };
84 
85  QMap< QString, AttributeStatistics > mMetadataStats;
86 
87  QMap< QString, QMap< int, int > > mAttributeClasses;
88  QVariantMap mOriginalMetadata;
89 };
90 
92 #endif // QGSEPTPOINTCLOUDINDEX_H
Represents a indexed point cloud node in octree.
This class represents a coordinate reference system (CRS).
Base class for handling loading QgsPointCloudBlock asynchronously.
Base class for storing raw data from point cloud nodes.
Represents a indexed point clouds data in octree.
virtual QVariant metadataClassStatistic(const QString &attribute, const QVariant &value, QgsStatisticalSummary::Statistic statistic) const
Returns the statistic statistic of the class value of the attribute attribute.
AccessType
The access type of the data, local is for local files and remote for remote files (over HTTP)
@ Local
Local means the source is a local file on the machine.
virtual qint64 pointCount() const =0
Returns the number of points in the point cloud.
virtual QVariantList metadataClasses(const QString &attribute) const
Returns the classes of attribute.
virtual QgsPointCloudBlock * nodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns node data block.
virtual QVariant metadataStatistic(const QString &attribute, QgsStatisticalSummary::Statistic statistic) const
Returns the statistic statistic of attribute.
virtual AccessType accessType() const =0
Returns the access type of the data If the access type is Remote, data will be fetched from an HTTP s...
virtual bool isValid() const =0
Returns whether index is loaded and valid.
virtual QgsCoordinateReferenceSystem crs() const =0
Returns the coordinate reference system of the point cloud index.
virtual void load(const QString &fileName)=0
Loads the index from the file.
virtual QgsPointCloudBlockRequest * asyncNodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns a handle responsible for loading a node data block.
virtual QVariantMap originalMetadata() const =0
Returns the original metadata map.
Point cloud data request.
Statistic
Enumeration of flags that specify statistics to be calculated.