QgsCesiumImplicitTiling Class Reference

Contains utilities for working with Cesium 3D Tiles implicit tiling. More...

#include <qgscesiumimplicittiling.h>

Classes
struct	Root
	Definition of root implicit tiling node (typically root node of the whole tileset, but it does not have to be - there could be even multiple root implicit tiling nodes within a tileset). More...
struct	Subtree
	Data about subtree of a node - there should be subtree at least for root implicit tiling node, and there may be further subtrees if the hierarchy is deeper. More...
struct	TileCoordinate
	Contains ZXY coordinates of a node within implicit tiling. More...

Static Public Member Functions
static Qgis::TileChildrenAvailability	childAvailability (const Root &tilingData, const TileCoordinate &coord)
	Returns tile availability of a child based on cached subtree data.
static QMap< TileCoordinate, QgsTiledSceneNode * >	createImplicitTilingChildren (QgsTiledSceneNode *node, const TileCoordinate &coord, Root &tilingData, const TileCoordinate &subtreeCoord, QgsCoordinateTransformContext &transformContext, long long &nextTileId)
	Creates immediate children of a node according to implicit tiling.
static QString	expandTemplateUri (const QString &templateUri, const QUrl &baseUrl, const TileCoordinate &coord)
	Expands template URI (using {level}, {x}, {y} markers) to the final URI.
static bool	parseImplicitTiling (const json &tileJson, QgsTiledSceneNode *newNode, const QUrl &baseUrl, Qgis::Axis gltfUpAxis, Root &tilingData)
	Parses JSON definition of implicit tiling into tilingData argument and returns true on success.
static Subtree	parseSubtree (const Root &tilingData, const QByteArray &data)
	Parses subtree definition and returns it.
static int	subtreeBitIndex (int localLevel, int localX, int localY)
	Returns the bit index within a subtree's availability bitstream for a given local tile position.
static TileCoordinate	tileCoordinateToParentSubtree (TileCoordinate coord, int subtreeLevels)
	Returns parent subtree's tile coordinates of the given tile.

Detailed Description

Contains utilities for working with Cesium 3D Tiles implicit tiling.

Currently only supporting QUADTREE subdivision scheme.

Note

Not available in Python bindings - private API that may change later

Since

QGIS 4.2

Definition at line 43 of file qgscesiumimplicittiling.h.

Member Function Documentation

childAvailability()

Qgis::TileChildrenAvailability QgsCesiumImplicitTiling::childAvailability ( const Root & tilingData, const TileCoordinate & coord )

static

Returns tile availability of a child based on cached subtree data.

Definition at line 355 of file qgscesiumimplicittiling.cpp.

createImplicitTilingChildren()

QMap< QgsCesiumImplicitTiling::TileCoordinate, QgsTiledSceneNode * > QgsCesiumImplicitTiling::createImplicitTilingChildren ( QgsTiledSceneNode * node, const TileCoordinate & coord, Root & tilingData, const TileCoordinate & subtreeCoord, QgsCoordinateTransformContext & transformContext, long long & nextTileId )

static

Creates immediate children of a node according to implicit tiling.

Definition at line 271 of file qgscesiumimplicittiling.cpp.

expandTemplateUri()

QString QgsCesiumImplicitTiling::expandTemplateUri ( const QString & templateUri, const QUrl & baseUrl, const TileCoordinate & coord )

static

Expands template URI (using {level}, {x}, {y} markers) to the final URI.

Definition at line 55 of file qgscesiumimplicittiling.cpp.

parseImplicitTiling()

bool QgsCesiumImplicitTiling::parseImplicitTiling ( const json & tileJson, QgsTiledSceneNode * newNode, const QUrl & baseUrl, Qgis::Axis gltfUpAxis, Root & tilingData )

static

Parses JSON definition of implicit tiling into tilingData argument and returns true on success.

Definition at line 394 of file qgscesiumimplicittiling.cpp.

parseSubtree()

QgsCesiumImplicitTiling::Subtree QgsCesiumImplicitTiling::parseSubtree ( const Root & tilingData, const QByteArray & data )

static

Parses subtree definition and returns it.

Definition at line 118 of file qgscesiumimplicittiling.cpp.

subtreeBitIndex()

int QgsCesiumImplicitTiling::subtreeBitIndex ( int localLevel, int localX, int localY )

static

Returns the bit index within a subtree's availability bitstream for a given local tile position.

Definition at line 49 of file qgscesiumimplicittiling.cpp.

tileCoordinateToParentSubtree()

QgsCesiumImplicitTiling::TileCoordinate QgsCesiumImplicitTiling::tileCoordinateToParentSubtree ( TileCoordinate coord, int subtreeLevels )

static

Returns parent subtree's tile coordinates of the given tile.

Definition at line 261 of file qgscesiumimplicittiling.cpp.

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

• /build/qgis-4.1.0+git20260511+64dc32379c2+99sid/src/core/tiledscene/qgscesiumimplicittiling.h
• /build/qgis-4.1.0+git20260511+64dc32379c2+99sid/src/core/tiledscene/qgscesiumimplicittiling.cpp