QGIS API Documentation 3.29.0-Master (8c80f25a4f)
qgscopcpointcloudindex.h
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1/***************************************************************************
2 qgscopcpointcloudindex.h
3 --------------------
4 begin : March 2022
5 copyright : (C) 2022 by Belgacem Nedjima
6 email : belgacem dot nedjima 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 QGSCOPCPOINTCLOUDINDEX_H
19#define QGSCOPCPOINTCLOUDINDEX_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 <fstream>
30
31#include "qgspointcloudindex.h"
34#include "qgis_sip.h"
36
37#include "qgslazinfo.h"
38#include "lazperf/vlr.hpp"
39
41#define SIP_NO_FILE
42
44
45class CORE_EXPORT QgsCopcPointCloudIndex: public QgsPointCloudIndex
46{
47 Q_OBJECT
48 public:
49
50 explicit QgsCopcPointCloudIndex();
51 ~QgsCopcPointCloudIndex();
52
53 std::unique_ptr<QgsPointCloudIndex> clone() const override;
54
55 void load( const QString &fileName ) override;
56
57 bool hasNode( const IndexedPointCloudNode &n ) const override;
58 QList<IndexedPointCloudNode> nodeChildren( const IndexedPointCloudNode &n ) const override;
59
60 QgsPointCloudBlock *nodeData( const IndexedPointCloudNode &n, const QgsPointCloudRequest &request ) override;
62
63 QgsCoordinateReferenceSystem crs() const override;
64 qint64 pointCount() const override;
65 bool hasStatisticsMetadata() const override { return false; };
66 QVariantMap originalMetadata() const override { return mOriginalMetadata; }
67
68 bool isValid() const override;
70
76 bool writeStatistics( QgsPointCloudStatistics &stats );
77
83 QgsPointCloudStatistics readStatistics();
84
89 void copyCommonProperties( QgsCopcPointCloudIndex *destination ) const;
90
91 protected:
92 bool loadSchema( QgsLazInfo &lazInfo );
93 bool loadHierarchy();
94
96 virtual bool fetchNodeHierarchy( const IndexedPointCloudNode &n ) const;
97
102 virtual void fetchHierarchyPage( uint64_t offset, uint64_t byteSize ) const;
103
104 QByteArray fetchCopcStatisticsEvlrData();
105
106 bool mIsValid = false;
107 QString mFileName;
108 mutable std::ifstream mCopcFile;
109 mutable lazperf::copc_info_vlr mCopcInfoVlr;
110 mutable QHash<IndexedPointCloudNode, QPair<uint64_t, int32_t>> mHierarchyNodePos;
111
112 QVariantMap mOriginalMetadata;
113
114 std::unique_ptr<QgsLazInfo> mLazInfo = nullptr;
115};
116
118#endif // QGSCOPCPOINTCLOUDINDEX_H
Represents a indexed point cloud node in octree.
This class represents a coordinate reference system (CRS).
Class for extracting information contained in LAZ file such as the public header block and variable l...
Definition: qgslazinfo.h:39
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 QgsPointCloudBlockRequest * asyncNodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns a handle responsible for loading a node data block.
virtual QList< IndexedPointCloudNode > nodeChildren(const IndexedPointCloudNode &n) const
Returns all children of node.
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.
void copyCommonProperties(QgsPointCloudIndex *destination) const
Copies common properties to the destination index.
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 std::unique_ptr< QgsPointCloudIndex > clone() const =0
Returns a clone of the current point cloud index object.
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 bool hasNode(const IndexedPointCloudNode &n) const
Returns whether the octree contain given node.
virtual QgsPointCloudBlock * nodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns node data block.
virtual void load(const QString &fileName)=0
Loads the index from the file.
virtual bool hasStatisticsMetadata() const =0
Returns whether the dataset contains metadata of statistics.
virtual QVariantMap originalMetadata() const =0
Returns the original metadata map.
Point cloud data request.
Class used to store statistics of a point cloud dataset.