Class: QgsPointCloudExtentRenderer

class qgis.core.QgsPointCloudExtentRenderer(symbol: QgsFillSymbol = None)

Bases: QgsPointCloudRenderer

Constructor for QgsPointCloudExtentRenderer.

Optionally the symbol to use for showing the extent can be specified. If specified, ownership is transferred to the renderer. If no symbol is specified a default one will be created instead.

A renderer for 2d visualisation of point clouds which shows the dataset’s extents using a fill symbol.

New in version 3.18.

Parameters

symbol –

clone(self) → QgsPointCloudRenderer

Return type

QgsPointCloudRenderer

copyCommonProperties(self, destination: QgsPointCloudRenderer)

Copies common point cloud properties (such as point size and screen error) to the destination renderer.

create(element: QDomElement, context: QgsReadWriteContext) → QgsPointCloudRenderer

Creates an extent renderer from an XML element.

Parameters

• element (QDomElement) –

• context (QgsReadWriteContext) –

Return type

QgsPointCloudRenderer

createLegendNodes(self, nodeLayer: QgsLayerTreeLayer) → List[QgsLayerTreeModelLegendNode]

Parameters

nodeLayer (QgsLayerTreeLayer) –

Return type

List[QgsLayerTreeModelLegendNode]

defaultFillSymbol() → QgsFillSymbol

Returns a new instance of the default fill symbol to use for showing point cloud extents.

Return type

QgsFillSymbol

drawPoint(self, x: float, y: float, color: Union[QColor, Qt.GlobalColor, QGradient], context: QgsPointCloudRenderContext)

Draws a point using a color at the specified x and y (in map coordinates).

fillSymbol(self) → QgsFillSymbol

Returns the symbol used to render the cloud’s extent.

See also

setFillSymbol()

Return type

QgsFillSymbol

pointXY(context: QgsPointCloudRenderContext, ptr: str, i: int) → Tuple[float, float]

Retrieves the x and y coordinate for the point at index i.

pointZ(context: QgsPointCloudRenderContext, ptr: str, i: int) → float

Retrieves the z value for the point at index i.

renderBlock(self, block: QgsPointCloudBlock, context: QgsPointCloudRenderContext)

Parameters

• block (QgsPointCloudBlock) –

• context (QgsPointCloudRenderContext) –

renderExtent(self, extent: QgsGeometry, context: QgsPointCloudRenderContext)

Renders a polygon extent geometry to the specified render context.

Parameters

• extent (QgsGeometry) –

• context (QgsPointCloudRenderContext) –

restoreCommonProperties(self, element: QDomElement, context: QgsReadWriteContext)

Restores common renderer properties (such as point size and screen error) from the specified DOM element.

See also

saveCommonProperties()

save(self, doc: QDomDocument, context: QgsReadWriteContext) → QDomElement

Parameters

• doc (QDomDocument) –

• context (QgsReadWriteContext) –

Return type

QDomElement

saveCommonProperties(self, element: QDomElement, context: QgsReadWriteContext)

Saves common renderer properties (such as point size and screen error) to the specified DOM element.

See also

restoreCommonProperties()

setFillSymbol(self, symbol: QgsFillSymbol)

Sets the symbol used to render the cloud’s extent.

Ownership of symbol is transferred to the renderer.

See also

fillSymbol()

Parameters

symbol (QgsFillSymbol) –

startRender(self, context: QgsPointCloudRenderContext)

Parameters

context (QgsPointCloudRenderContext) –

stopRender(self, context: QgsPointCloudRenderContext)

Parameters

context (QgsPointCloudRenderContext) –

type(self) → str

Return type

str