Represents a indexed point clouds data in octree. More...

#include <qgspointcloudindex.h>

Inheritance diagram for QgsPointCloudIndex:

Public Types
enum	AccessType { Local , Remote }
	The access type of the data, local is for local files and remote for remote files (over HTTP) More...

Public Member Functions
	QgsPointCloudIndex ()
	Constructs index.

	~QgsPointCloudIndex ()

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 server either synchronously or asynchronously If the access type is local, the data is stored locally as a file and will only be fetch synchronously ( blocking request with nodeData only )

virtual QgsPointCloudBlockRequest *	asyncNodeData (const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
	Returns a handle responsible for loading a node data block.

QgsPointCloudAttributeCollection	attributes () const
	Returns all attributes that are stored in the file.

virtual std::unique_ptr< QgsPointCloudIndex >	clone () const =0
	Returns a clone of the current point cloud index object.

void	copyCommonProperties (QgsPointCloudIndex *destination) const
	Copies common properties to the destination index.

virtual QgsCoordinateReferenceSystem	crs () const =0
	Returns the coordinate reference system of the point cloud index.

QString	error () const
	Returns the error that occurred during the loading of the index.

QgsRectangle	extent () const
	Returns extent of the data.

QgsPointCloudBlock *	getNodeDataFromCache (const IndexedPointCloudNode &node, const QgsPointCloudRequest &request)
	Fetches the requested node data from the cache for the specified node and request.

virtual bool	hasNode (const IndexedPointCloudNode &n) const
	Returns whether the octree contain given node.

virtual bool	hasStatisticsMetadata () const =0
	Returns whether the dataset contains metadata of statistics.

virtual bool	isValid () const =0
	Returns whether index is loaded and valid.

virtual void	load (const QString &fileName)=0
	Loads the index from the file.

virtual QVariantList	metadataClasses (const QString &attribute) const
	Returns the classes of attribute.

virtual QVariant	metadataClassStatistic (const QString &attribute, const QVariant &value, Qgis::Statistic statistic) const
	Returns the statistic statistic of the class value of the attribute attribute.

virtual QVariant	metadataStatistic (const QString &attribute, Qgis::Statistic statistic) const
	Returns the statistic statistic of attribute.

virtual QgsPointCloudStatistics	metadataStatistics () const
	Returns the object containing the statistics metadata extracted from the dataset.

QgsPointCloudDataBounds	nodeBounds (const IndexedPointCloudNode &node) const
	Returns bounds of particular node.

virtual QList< IndexedPointCloudNode >	nodeChildren (const IndexedPointCloudNode &n) const
	Returns all children of node.

virtual std::unique_ptr< QgsPointCloudBlock >	nodeData (const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
	Returns node data block.

float	nodeError (const IndexedPointCloudNode &n) const
	Returns node's error in map units (used to determine in whether the node has enough detail for the current view)

QgsRectangle	nodeMapExtent (const IndexedPointCloudNode &node) const
	Returns the extent of a node in map coordinates.

virtual qint64	nodePointCount (const IndexedPointCloudNode &n) const
	Returns the number of points of a given node n.

QgsDoubleRange	nodeZRange (const IndexedPointCloudNode &node) const
	Returns the z range of a node.

QgsVector3D	offset () const
	Returns offset.

virtual QVariantMap	originalMetadata () const =0
	Returns the original metadata map.

virtual qint64	pointCount () const =0
	Returns the number of points in the point cloud.

IndexedPointCloudNode	root ()
	Returns root node of the index.

QgsVector3D	scale () const
	Returns scale.

bool	setSubsetString (const QString &subset)
	Sets the string used to define a subset of the point cloud.

int	span () const
	Returns the number of points in one direction in a single node.

void	storeNodeDataToCache (QgsPointCloudBlock *data, const IndexedPointCloudNode &node, const QgsPointCloudRequest &request)
	Stores existing data to the cache for the specified node and request.

QString	subsetString () const
	Returns the string used to define a subset of the point cloud.

double	zMax () const
	Returns z max.

double	zMin () const
	Returns z min.

Static Public Member Functions
static void	storeNodeDataToCacheStatic (QgsPointCloudBlock *data, const IndexedPointCloudNode &node, const QgsPointCloudRequest &request, const QgsPointCloudExpression &expression, const QString &uri)
	Stores existing data to the cache for the specified node, request, expression and uri.

Protected Member Functions
void	setAttributes (const QgsPointCloudAttributeCollection &attributes)
	Sets native attributes of the data.

Protected Attributes
QgsPointCloudAttributeCollection	mAttributes

QString	mError

QgsRectangle	mExtent
	2D extent of data

QgsPointCloudExpression	mFilterExpression
	The filter expression to be evaluated when fetching node data.

QHash< IndexedPointCloudNode, int >	mHierarchy
	Data hierarchy.

QMutex	mHierarchyMutex

QgsVector3D	mOffset
	Offset of our int32 coordinates compared to CRS coords.

QgsPointCloudDataBounds	mRootBounds
	Bounds of the root node's cube (in int32 coordinates)

QgsVector3D	mScale
	Scale of our int32 coordinates compared to CRS coords.

int	mSpan = 0
	All native attributes stored in the file.

QString	mUri

double	mZMax = 0
	Vertical extent of data.

double	mZMin = 0

Static Protected Attributes
static QCache< QgsPointCloudCacheKey, QgsPointCloudBlock >	sBlockCache

static QMutex	sBlockCacheMutex

Detailed Description

Represents a indexed point clouds data in octree.

Note: The API is considered EXPERIMENTAL and can be changed without a notice

Since: QGIS 3.18

Definition at line 208 of file qgspointcloudindex.h.

Member Enumeration Documentation

◆ AccessType

enum QgsPointCloudIndex::AccessType

The access type of the data, local is for local files and remote for remote files (over HTTP)

Enumerator
Local	Local means the source is a local file on the machine.
Remote	Remote means it's loaded through a protocol like HTTP.

Definition at line 213 of file qgspointcloudindex.h.

Constructor & Destructor Documentation

◆ QgsPointCloudIndex()

QgsPointCloudIndex::QgsPointCloudIndex ( )

explicitdefault

Constructs index.

◆ ~QgsPointCloudIndex()

QgsPointCloudIndex::~QgsPointCloudIndex ( )

default

Member Function Documentation

◆ accessType()

virtual AccessType QgsPointCloudIndex::accessType ( ) const

pure virtual

Returns the access type of the data If the access type is Remote, data will be fetched from an HTTP server either synchronously or asynchronously If the access type is local, the data is stored locally as a file and will only be fetch synchronously ( blocking request with nodeData only )

Note: Always make sure to check before trying to use asyncNodeData since it is not supported in the case of local access type

◆ asyncNodeData()

virtual QgsPointCloudBlockRequest * QgsPointCloudIndex::asyncNodeData	(	const IndexedPointCloudNode &	n,
		const QgsPointCloudRequest &	request
	)

pure virtual

Returns a handle responsible for loading a node data block.

e.g. positions (needs to be scaled and offset applied to get coordinates) or classification, intensity or custom attributes

It is caller responsibility to free the handle and the block issued by the handle if the loading succeeds.

May return nullptr in case the node is not present or any other problem with loading

◆ attributes()

QgsPointCloudAttributeCollection QgsPointCloudIndex::attributes ( ) const

Returns all attributes that are stored in the file.

Definition at line 221 of file qgspointcloudindex.cpp.

◆ clone()

virtual std::unique_ptr< QgsPointCloudIndex > QgsPointCloudIndex::clone ( ) const

pure virtual

Returns a clone of the current point cloud index object.

Note: It is the responsibility of the caller to handle the ownership and delete the object.

Since: QGIS 3.26

◆ copyCommonProperties()

void QgsPointCloudIndex::copyCommonProperties ( QgsPointCloudIndex * destination ) const

Copies common properties to the destination index.

Since: QGIS 3.26

Definition at line 372 of file qgspointcloudindex.cpp.

◆ crs()

virtual QgsCoordinateReferenceSystem QgsPointCloudIndex::crs ( ) const

pure virtual

Returns the coordinate reference system of the point cloud index.

◆ error()

QString QgsPointCloudIndex::error ( ) const

inline

Returns the error that occurred during the loading of the index.

Since: QGIS 3.26

Definition at line 240 of file qgspointcloudindex.h.

◆ extent()

QgsRectangle QgsPointCloudIndex::extent ( ) const

inline

Returns extent of the data.

Definition at line 309 of file qgspointcloudindex.h.

◆ getNodeDataFromCache()

QgsPointCloudBlock * QgsPointCloudIndex::getNodeDataFromCache	(	const IndexedPointCloudNode &	node,
		const QgsPointCloudRequest &	request
	)

Fetches the requested node data from the cache for the specified node and request.

If not found in the cache, nullptr is returned. Caller takes ownership of the returned object.

Definition at line 388 of file qgspointcloudindex.cpp.

◆ hasNode()

bool QgsPointCloudIndex::hasNode ( const IndexedPointCloudNode & n ) const

virtual

Returns whether the octree contain given node.

Definition at line 190 of file qgspointcloudindex.cpp.

◆ hasStatisticsMetadata()

virtual bool QgsPointCloudIndex::hasStatisticsMetadata ( ) const

pure virtual

Returns whether the dataset contains metadata of statistics.

◆ isValid()

virtual bool QgsPointCloudIndex::isValid ( ) const

pure virtual

Returns whether index is loaded and valid.

◆ load()

virtual void QgsPointCloudIndex::load ( const QString & fileName )

pure virtual

Loads the index from the file.

◆ metadataClasses()

QVariantList QgsPointCloudIndex::metadataClasses ( const QString & attribute ) const

virtual

Returns the classes of attribute.

Definition at line 329 of file qgspointcloudindex.cpp.

◆ metadataClassStatistic()

QVariant QgsPointCloudIndex::metadataClassStatistic	(	const QString &	attribute,
		const QVariant &	value,
		Qgis::Statistic	statistic
	)		const

virtual

Returns the statistic statistic of the class value of the attribute attribute.

Definition at line 335 of file qgspointcloudindex.cpp.

◆ metadataStatistic()

QVariant QgsPointCloudIndex::metadataStatistic	(	const QString &	attribute,
		Qgis::Statistic	statistic
	)		const

virtual

Returns the statistic statistic of attribute.

Definition at line 309 of file qgspointcloudindex.cpp.

◆ metadataStatistics()

QgsPointCloudStatistics QgsPointCloudIndex::metadataStatistics ( ) const

virtual

Returns the object containing the statistics metadata extracted from the dataset.

Since: QGIS 3.26

Definition at line 343 of file qgspointcloudindex.cpp.

◆ nodeBounds()

QgsPointCloudDataBounds QgsPointCloudIndex::nodeBounds ( const IndexedPointCloudNode & node ) const

Returns bounds of particular node.

Definition at line 226 of file qgspointcloudindex.cpp.

◆ nodeChildren()

QList< IndexedPointCloudNode > QgsPointCloudIndex::nodeChildren ( const IndexedPointCloudNode & n ) const

virtual

Returns all children of node.

Definition at line 202 of file qgspointcloudindex.cpp.

◆ nodeData()

virtual std::unique_ptr< QgsPointCloudBlock > QgsPointCloudIndex::nodeData	(	const IndexedPointCloudNode &	n,
		const QgsPointCloudRequest &	request
	)

pure virtual

Returns node data block.

e.g. positions (needs to be scaled and offset applied to get coordinates) or classification, intensity or custom attributes.

May return nullptr in case the node is not present or any other problem with loading

◆ nodeError()

float QgsPointCloudIndex::nodeError ( const IndexedPointCloudNode & n ) const

Returns node's error in map units (used to determine in whether the node has enough detail for the current view)

Definition at line 254 of file qgspointcloudindex.cpp.

◆ nodeMapExtent()

QgsRectangle QgsPointCloudIndex::nodeMapExtent ( const IndexedPointCloudNode & node ) const

Returns the extent of a node in map coordinates.

See also: nodeZRange()

Definition at line 244 of file qgspointcloudindex.cpp.

◆ nodePointCount()

qint64 QgsPointCloudIndex::nodePointCount ( const IndexedPointCloudNode & n ) const

virtual

Returns the number of points of a given node n.

Definition at line 196 of file qgspointcloudindex.cpp.

◆ nodeZRange()

QgsDoubleRange QgsPointCloudIndex::nodeZRange ( const IndexedPointCloudNode & node ) const

Returns the z range of a node.

See also: nodeMapExtent()

Definition at line 249 of file qgspointcloudindex.cpp.

◆ offset()

QgsVector3D QgsPointCloudIndex::offset ( ) const

Returns offset.

Definition at line 265 of file qgspointcloudindex.cpp.

◆ originalMetadata()

virtual QVariantMap QgsPointCloudIndex::originalMetadata ( ) const

pure virtual

Returns the original metadata map.

◆ pointCount()

virtual qint64 QgsPointCloudIndex::pointCount ( ) const

pure virtual

Returns the number of points in the point cloud.

◆ root()

IndexedPointCloudNode QgsPointCloudIndex::root ( )

inline

Returns root node of the index.

Definition at line 272 of file qgspointcloudindex.h.

◆ scale()

QgsVector3D QgsPointCloudIndex::scale ( ) const

Returns scale.

Definition at line 260 of file qgspointcloudindex.cpp.

◆ setAttributes()

void QgsPointCloudIndex::setAttributes ( const QgsPointCloudAttributeCollection & attributes )

protected

Sets native attributes of the data.

Definition at line 270 of file qgspointcloudindex.cpp.

◆ setSubsetString()

bool QgsPointCloudIndex::setSubsetString ( const QString & subset )

Sets the string used to define a subset of the point cloud.

Parameters

subset The subset string to be used in a QgsPointCloudExpression

Returns: true if the expression is parsed with no errors, false otherwise

Since: QGIS 3.26

Definition at line 280 of file qgspointcloudindex.cpp.

◆ span()

int QgsPointCloudIndex::span ( ) const

Returns the number of points in one direction in a single node.

Definition at line 275 of file qgspointcloudindex.cpp.

◆ storeNodeDataToCache()

void QgsPointCloudIndex::storeNodeDataToCache	(	QgsPointCloudBlock *	data,
		const IndexedPointCloudNode &	node,
		const QgsPointCloudRequest &	request
	)

Stores existing data to the cache for the specified node and request.

Ownership is not transferred, block gets cloned in the cache.

Definition at line 397 of file qgspointcloudindex.cpp.

◆ storeNodeDataToCacheStatic()

void QgsPointCloudIndex::storeNodeDataToCacheStatic	(	QgsPointCloudBlock *	data,
		const IndexedPointCloudNode &	node,
		const QgsPointCloudRequest &	request,
		const QgsPointCloudExpression &	expression,
		const QString &	uri
	)

static

Stores existing data to the cache for the specified node, request, expression and uri.

Ownership is not transferred, block gets cloned in the cache.

Definition at line 402 of file qgspointcloudindex.cpp.

◆ subsetString()

QString QgsPointCloudIndex::subsetString ( ) const

Returns the string used to define a subset of the point cloud.

Returns: The subset string or null QString if not implemented by the provider

Since: QGIS 3.26

Definition at line 304 of file qgspointcloudindex.cpp.

◆ zMax()

double QgsPointCloudIndex::zMax ( ) const

inline

Returns z max.

Definition at line 314 of file qgspointcloudindex.h.

◆ zMin()

double QgsPointCloudIndex::zMin ( ) const

inline

Returns z min.

Definition at line 312 of file qgspointcloudindex.h.

Member Data Documentation

◆ mAttributes

QgsPointCloudAttributeCollection QgsPointCloudIndex::mAttributes

protected

Definition at line 399 of file qgspointcloudindex.h.

◆ mError

QString QgsPointCloudIndex::mError

protected

Definition at line 403 of file qgspointcloudindex.h.

◆ mExtent

QgsRectangle QgsPointCloudIndex::mExtent

protected

2D extent of data

Definition at line 391 of file qgspointcloudindex.h.

◆ mFilterExpression

QgsPointCloudExpression QgsPointCloudIndex::mFilterExpression

protected

The filter expression to be evaluated when fetching node data.

Definition at line 401 of file qgspointcloudindex.h.

◆ mHierarchy

QHash<IndexedPointCloudNode, int> QgsPointCloudIndex::mHierarchy

mutableprotected

Data hierarchy.

Definition at line 395 of file qgspointcloudindex.h.

◆ mHierarchyMutex

QMutex QgsPointCloudIndex::mHierarchyMutex

mutableprotected

Definition at line 394 of file qgspointcloudindex.h.

◆ mOffset

QgsVector3D QgsPointCloudIndex::mOffset

protected

Offset of our int32 coordinates compared to CRS coords.

Definition at line 397 of file qgspointcloudindex.h.

◆ mRootBounds

QgsPointCloudDataBounds QgsPointCloudIndex::mRootBounds

protected

Bounds of the root node's cube (in int32 coordinates)

Definition at line 398 of file qgspointcloudindex.h.

◆ mScale

QgsVector3D QgsPointCloudIndex::mScale

protected

Scale of our int32 coordinates compared to CRS coords.

Definition at line 396 of file qgspointcloudindex.h.

◆ mSpan

int QgsPointCloudIndex::mSpan = 0

protected

All native attributes stored in the file.

Number of points in one direction in a single node

Definition at line 400 of file qgspointcloudindex.h.

◆ mUri

QString QgsPointCloudIndex::mUri

protected

Definition at line 404 of file qgspointcloudindex.h.

◆ mZMax

double QgsPointCloudIndex::mZMax = 0

protected

Vertical extent of data.

Definition at line 392 of file qgspointcloudindex.h.

◆ mZMin

double QgsPointCloudIndex::mZMin = 0

protected

Definition at line 392 of file qgspointcloudindex.h.

◆ sBlockCache

QCache< QgsPointCloudCacheKey, QgsPointCloudBlock > QgsPointCloudIndex::sBlockCache

staticprotected

Definition at line 406 of file qgspointcloudindex.h.

◆ sBlockCacheMutex

QMutex QgsPointCloudIndex::sBlockCacheMutex

staticprotected

Definition at line 405 of file qgspointcloudindex.h.

The documentation for this class was generated from the following files:

/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/core/pointcloud/qgspointcloudindex.h
/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/core/pointcloud/qgspointcloudindex.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ AccessType

Constructor & Destructor Documentation

◆ QgsPointCloudIndex()

◆ ~QgsPointCloudIndex()

Member Function Documentation

◆ accessType()

◆ asyncNodeData()

◆ attributes()

◆ clone()

◆ copyCommonProperties()

◆ crs()

◆ error()

◆ extent()

◆ getNodeDataFromCache()

◆ hasNode()

◆ hasStatisticsMetadata()

◆ isValid()

◆ load()

◆ metadataClasses()

◆ metadataClassStatistic()

◆ metadataStatistic()

◆ metadataStatistics()

◆ nodeBounds()

◆ nodeChildren()

◆ nodeData()

◆ nodeError()

◆ nodeMapExtent()

◆ nodePointCount()

◆ nodeZRange()

◆ offset()

◆ originalMetadata()

◆ pointCount()

◆ root()

◆ scale()

◆ setAttributes()

◆ setSubsetString()

◆ span()

◆ storeNodeDataToCache()

◆ storeNodeDataToCacheStatic()

◆ subsetString()

◆ zMax()

◆ zMin()

Member Data Documentation

◆ mAttributes

◆ mError

◆ mExtent

◆ mFilterExpression

◆ mHierarchy

◆ mHierarchyMutex

◆ mOffset

◆ mRootBounds

◆ mScale

◆ mSpan

◆ mUri

◆ mZMax

◆ mZMin

◆ sBlockCache

◆ sBlockCacheMutex