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Showing content from https://developers.arcgis.com/qt/cpp/api-reference/esri-arcgisruntime-renderingrule.html below:

RenderingRule Class | ArcGIS Maps SDK for Qt

RenderingRule

class Esri::ArcGISRuntime::RenderingRule

The rule that specifies how images are rendered or processed on an ArcGIS image service. More...

List of all members, including inherited members

Public Functions Detailed Description

Raster images whose individual pixels represent elevation values can be rendered in a number of different ways, including representation of slope, aspect, hillshade, and shaded relief. A rendering rule defines how the ArcGIS image service renders its images.

You can create a RenderingRule from a RenderingRuleInfo or a JSON string that specifies a service-defined or client-defined rendering rule. For a list of functions and the syntax for these rendering rules, see Raster function objects.

Create a RenderingRule:

// get the rendering rule info from the service info
RenderingRuleInfo renderingRuleInfo = m_imageServiceRaster->serviceInfo().renderingRuleInfos().at(index);
// create a new rendering rule with the rendering rule info
RenderingRule* renderingRule = new RenderingRule(renderingRuleInfo, this);
// create an image service raster
ImageServiceRaster* isr = new ImageServiceRaster(m_url, this);
// set the rendering rule
isr->setRenderingRule(renderingRule);

Relevant samples:

Raster rendering rule: Display a raster on a map and apply different rendering rules to that raster.

Member Function Documentation [explicit] RenderingRule::RenderingRule(const Esri::ArcGISRuntime::RenderingRuleInfo &renderingRuleInfo, QObject *parent = nullptr)

Creates a rendering rule object with rendering rule info.

renderingRuleInfo - The rendering rule info object.
parent - The optional parent QObject.

[explicit] RenderingRule::RenderingRule(const QString &renderingRuleJson, QObject *parent = nullptr)

Creates a rendering rule object with server side JSON.

renderingRuleJson - The JSON that could either be a raster function object used in the image service REST API or a predefined service rendering rule.
parent - The optional parent QObject.

This is a server side raster function JSON and is different from the JSON returned by RasterFunction.

[override virtual noexcept] RenderingRule::~RenderingRule()

Destructor.

Esri::ArcGISRuntime::RenderingRuleInfo RenderingRule::renderingRuleInfo() const

Returns rendering rule info from rendering rule object.

QString RenderingRule::renderingRuleJson() const

Returns json property from rendering rule object.

Empty string is returned if this RenderingRule was created from a RenderingRuleInfo. This is a server side raster function JSON and not a client side RasterFunction JSON.

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