Class: QgsElevationShadingRenderer¶

class qgis.core.QgsElevationShadingRenderer¶

Bases: sip.wrapper

This class can render elevation shading on an image with different methods (eye dome lighting, hillshading, …).

An instance of this class supports the following settings:

activate/deactivate elevation shading
activate/deactivate a particular shading method
parameters of each shading method

To render shading on image the caller call renderShading() with the image and an elevation map (see QgsElevationMap()) as parameters. The shading is applied on the image in place. Elevation map and image must have same sizes.

New in version 3.30:

Methods

`combinedElevationMethod`	Returns the method used when conbining different elevation sources.
`eyeDomeLightingDistance`	Returns the distance of the eye dome lighting method, that is the distance where the effect is apply from the source elevation.
`eyeDomeLightingDistanceUnit`	Returns the unit of the distance of the eye dome lighting method returned by `eyeDomeLightingDistance()`.
`eyeDomeLightingStrength`	Returns the strength of the eye dome lighting method.
`hillshadingZFactor`	Returns the z factor used by the hill shading method.
`isActive`	Returns whether this shading renderer is active.
`isActiveEyeDomeLighting`	Returns whether eye-dome lighting shading method is active
`isActiveHillshading`	Returns whether the hillshading is active
`isHillshadingMultidirectional`	Returns whether the hill shading method is multidirectional.
`lightAltitude`	Returns the altitude of the light (degree) that can be used by some methods (e.g.
`lightAzimuth`	Returns the azimuth of the light (degree) that can be used by some methods (e.g.
`readXml`	Reads configuration from a DOM element
`renderShading`	Render shading on `image` condidering the elevation map `elevation` and the renderer context `context` If elevation map and the image don't have same sizes, nothing happens.
`setActive`	Sets whether this shading renderer is active.
`setActiveEyeDomeLighting`	Sets active the eye-dome lighting shading method.
`setActiveHillshading`	Sets active the hillshading
`setCombinedElevationMethod`	Sets the `method` used when conbining different elevation sources.
`setEyeDomeLightingDistance`	Sets the distance of the eye dome lighting method, that is the distance where the effect is apply from the source elevation.
`setEyeDomeLightingDistanceUnit`	Sets the `unit` of the distance of the eye dome lighting method set by `setEyeDomeLightingDistance()`.
`setEyeDomeLightingStrength`	Sets the `strength` of the eye dome lighting method.
`setHillshadingMultidirectional`	Sets whether the hill shading method is multidirectional.
`setHillshadingZFactor`	Sets the z factor used by the hill shading method.
`setLightAltitude`	Sets the altitude of the light (degree) that can be used by some methods (e.g.
`setLightAzimuth`	Sets the azimuth of the light (degree) that can be used by some methods (e.g.
`writeXml`	Writes configuration on a DOM element

combinedElevationMethod(self) → Qgis.ElevationMapCombineMethod¶

Returns the method used when conbining different elevation sources.

See also

setCombinedElevationMethod()

Return type:: Qgis.ElevationMapCombineMethod

eyeDomeLightingDistance(self) → float¶

Returns the distance of the eye dome lighting method, that is the distance where the effect is apply from the source elevation.

See also

setEyeDomeLightingDistance()

Return type:: float

eyeDomeLightingDistanceUnit(self) → Qgis.RenderUnit¶

Returns the unit of the distance of the eye dome lighting method returned by eyeDomeLightingDistance().

See also

setEyeDomeLightingDistanceUnit()

Return type:: Qgis.RenderUnit

eyeDomeLightingStrength(self) → float¶

Returns the strength of the eye dome lighting method.

See also

setEyeDomeLightingStrength()

Return type:: float

hillshadingZFactor(self) → float¶

Returns the z factor used by the hill shading method.

See also

setHillshadingZFactor()

Return type:: float

isActive(self) → bool¶

Returns whether this shading renderer is active.

Return type:: bool

isActiveEyeDomeLighting(self) → bool¶

Returns whether eye-dome lighting shading method is active

Return type:: bool

isActiveHillshading(self) → bool¶

Returns whether the hillshading is active

Return type:: bool

isHillshadingMultidirectional(self) → bool¶

Returns whether the hill shading method is multidirectional.

See also

setHillshadingMultidirectional()

Return type:: bool

lightAltitude(self) → float¶

Returns the altitude of the light (degree) that can be used by some methods (e.g. hill shading).

See also

setLightAltitude()

Return type:: float

lightAzimuth(self) → float¶

Returns the azimuth of the light (degree) that can be used by some methods (e.g. hill shading).

See also

setLightAltitude()

Return type:: float

readXml(self, element: QDomElement, context: QgsReadWriteContext)¶

Reads configuration from a DOM element

Parameters:

element (QDomElement) –
context (QgsReadWriteContext) –

renderShading(self, elevation: QgsElevationMap, image: QImage, context: QgsRenderContext)¶

Render shading on image condidering the elevation map elevation and the renderer context context If elevation map and the image don’t have same sizes, nothing happens.

Parameters:

elevation (QgsElevationMap) –
image (QImage) –
context (QgsRenderContext) –

setActive(self, active: bool)¶

Sets whether this shading renderer is active.

Parameters:: active (bool) –

setActiveEyeDomeLighting(self, active: bool)¶

Sets active the eye-dome lighting shading method.

Parameters:: active (bool) –

setActiveHillshading(self, active: bool)¶

Sets active the hillshading

Parameters:: active (bool) –

setCombinedElevationMethod(self, method: Qgis.ElevationMapCombineMethod)¶

Sets the method used when conbining different elevation sources.

See also

combinedElevationMethod()

Parameters:: method (Qgis.ElevationMapCombineMethod) –

setEyeDomeLightingDistance(self, distance: float)¶

Sets the distance of the eye dome lighting method, that is the distance where the effect is apply from the source elevation.

See also

eyeDomeLightingDistance()

Parameters:: distance (float) –

setEyeDomeLightingDistanceUnit(self, unit: Qgis.RenderUnit)¶

Sets the unit of the distance of the eye dome lighting method set by setEyeDomeLightingDistance().

See also

eyeDomeLightingDistanceUnit()

Parameters:: unit (Qgis.RenderUnit) –

setEyeDomeLightingStrength(self, strength: float)¶

Sets the strength of the eye dome lighting method.

See also

eyeDomeLightingStrength()

Parameters:: strength (float) –

setHillshadingMultidirectional(self, multiDirectional: bool)¶

Sets whether the hill shading method is multidirectional.

See also

isHillshadingMultidirectional()

Parameters:: multiDirectional (bool) –

setHillshadingZFactor(self, zFactor: float)¶

Sets the z factor used by the hill shading method.

See also

hillshadingZFactor()

Parameters:: zFactor (float) –

setLightAltitude(self, lightAltitude: float)¶

Sets the altitude of the light (degree) that can be used by some methods (e.g. hill shading).

See also

setLightAltitude()

Parameters:: lightAltitude (float) –

setLightAzimuth(self, lightAzimuth: float)¶

Sets the azimuth of the light (degree) that can be used by some methods (e.g. hill shading).

See also

lightAzimuth()

Parameters:: lightAzimuth (float) –

writeXml(self, elem: QDomElement, context: QgsReadWriteContext)¶

Writes configuration on a DOM element

Parameters:

elem (QDomElement) –
context (QgsReadWriteContext) –