Class: QgsInterpolatedLineRenderer

Represents a simple line renderer with width and color varying depending on values.

Added in version 3.14.

Methods

interpolatedColor	Returns the stroke color used to render
interpolatedLineWidth	Returns the stroke width used to render
render	Renders a line in the context between point1 and point2 with color and width that vary depending on value1 and value2
renderInDeviceCoordinates	Renders a line in the context between point1 and point2 in device (painter) coordinates with color that varies depending on valueColor1 and valueColor2 and and width that varies between valueWidth1 and valueWidth2.
setInterpolatedColor	Sets the stroke color used to render
setInterpolatedWidth	Sets the stroke width used to render
setSelected	Sets if the rendering must be done as the element is selected
setWidthUnit	Sets the unit of the stroke width
widthUnit	Returns the unit of the stroke width

class qgis.core.QgsInterpolatedLineRenderer

Bases: object

interpolatedColor(self) → QgsInterpolatedLineColor

Returns the stroke color used to render

Added in version 3.20.

Return type:

QgsInterpolatedLineColor

interpolatedLineWidth(self) → QgsInterpolatedLineWidth

Returns the stroke width used to render

Added in version 3.20.

Return type:

QgsInterpolatedLineWidth

render(self, value1: float, value2: float, point1: QgsPointXY, point2: QgsPointXY, context: QgsRenderContext)

Renders a line in the context between point1 and point2 with color and width that vary depending on value1 and value2

This method assumes that point1 and point2 are in map units. See renderInDeviceCoordinates() for an equivalent method which renders lines in painter coordinates.

Parameters:

• value1 (float)

• value2 (float)

• point1 (QgsPointXY)

• point2 (QgsPointXY)

• context (QgsRenderContext)

render(self, valueColor1: float, valueColor2: float, valueWidth1: float, valueWidth2: float, point1: QgsPointXY, point2: QgsPointXY, context: QgsRenderContext)

Renders a line in the context between point1 and point2 with color that varies depending on valueColor1 and valueColor2 and and width that varies between valueWidth1 and valueWidth2

This method assumes that point1 and point2 are in map units. See renderInDeviceCoordinates() for an equivalent method which renders lines in painter coordinates.

Added in version 3.20.

Parameters:

• valueColor1 (float)

• valueColor2 (float)

• valueWidth1 (float)

• valueWidth2 (float)

• point1 (QgsPointXY)

• point2 (QgsPointXY)

• context (QgsRenderContext)

renderInDeviceCoordinates(self, valueColor1: float, valueColor2: float, valueWidth1: float, valueWidth2: float, point1: QPointF | QPoint, point2: QPointF | QPoint, context: QgsRenderContext)

Renders a line in the context between point1 and point2 in device (painter) coordinates with color that varies depending on valueColor1 and valueColor2 and and width that varies between valueWidth1 and valueWidth2.

Added in version 3.22.

Parameters:

• valueColor1 (float)

• valueColor2 (float)

• valueWidth1 (float)

• valueWidth2 (float)

• point1 (Union[QPointF, QPoint])

• point2 (Union[QPointF, QPoint])

• context (QgsRenderContext)

setInterpolatedColor(self, strokeColoring: QgsInterpolatedLineColor)

Sets the stroke color used to render

Parameters:

strokeColoring (QgsInterpolatedLineColor)

setInterpolatedWidth(self, strokeWidth: QgsInterpolatedLineWidth)

Sets the stroke width used to render

Parameters:

strokeWidth (QgsInterpolatedLineWidth)

setSelected(self, selected: bool)

Sets if the rendering must be done as the element is selected

Added in version 3.20.

Parameters:

selected (bool)

setWidthUnit(self, strokeWidthUnit: Qgis.RenderUnit)

Sets the unit of the stroke width

Parameters:

strokeWidthUnit (Qgis.RenderUnit)

widthUnit(self) → Qgis.RenderUnit

Returns the unit of the stroke width

Added in version 3.20.

Return type:

Qgis.RenderUnit