Class: QgsPointCloudExtentRenderer

class qgis.core.QgsPointCloudExtentRenderer

Bases: QgsPointCloudRenderer

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

New in version 3.18.

QgsPointCloudExtentRenderer(symbol: QgsFillSymbol = None) 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.

Methods

clone	rtype QgsPointCloudRenderer
copyCommonProperties	Copies common point cloud properties (such as point size and screen error) to the destination renderer.
create	Creates an extent renderer from an XML element.
createLegendNodes	param nodeLayer
defaultFillSymbol	Returns a new instance of the default fill symbol to use for showing point cloud extents.
drawPoint	Draws a point using a color at the specified x and y (in map coordinates).
fillSymbol	Returns the symbol used to render the cloud’s extent.
pointXY	Retrieves the x and y coordinate for the point at index i.
pointZ	Retrieves the z value for the point at index i.
renderBlock	param block
renderExtent	Renders a polygon extent geometry to the specified render context.
restoreCommonProperties	Restores common renderer properties (such as point size and screen error) from the specified DOM element.
save	param doc
saveCommonProperties	Saves common renderer properties (such as point size and screen error) to the specified DOM element.
setFillSymbol	Sets the symbol used to render the cloud’s extent.
startRender	param context
stopRender	param context
type	rtype str

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