Class: QgsVectorLayer3DTilingSettings¶

Defines configuration of how a vector layer gets tiled for 3D rendering.

Root node has the layer’s extent and geometry error is set as a fraction of the extent (see maximumLeafExtent()) Child nodes are created using quadtree approach - a node gets four children, each having their width/height (2D extent) and geometry error halved.

For example a root tile that is 1’000 meters wide will get geometry error set as 10 meters.

When loading data for each tile, we fetch up to maximumChunkFeatures() features. If the limit is hit, we will recursively create children, so that user gets to see more features when zoomed in. If the geographical extent is very large (see maximumLeafExtent()), we would still recursively create children, even if the limit of features is not hit, to avoid jitter due to numerical precision issues.

Added in version 3.12.

Methods

`maximumChunkFeatures`	Returns the maximum number of features that will be fetched in any chunk.
`readXml`	Reads content of the object from XML
`setMaximumChunkFeatures`	Sets the maximum number of features that will be fetched in any chunk.
`setShowBoundingBoxes`	Sets whether to display bounding boxes of entity's tiles (for debugging)
`setZoomLevelsCount`	Sets number of zoom levels.
`showBoundingBoxes`	Returns whether to display bounding boxes of entity's tiles (for debugging)
`writeXml`	Writes content of the object to XML
`zoomLevelsCount`	Returns number of zoom levels.

class qgis._3d.QgsVectorLayer3DTilingSettings[source]¶

Bases: object

maximumChunkFeatures(self) → int[source]¶

Returns the maximum number of features that will be fetched in any chunk. If more features than the maximum belong to the chunk, further features will become available in child nodes. This is meant as a control for performance - fewer features mean faster load times, but user needs to zoom in more to see everything.