Class VisibleFeatureIterator

Inheritance

object

VisibleFeatureIterator

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Mapsui.Rendering

Assembly: Mapsui.dll

Syntax

public static class VisibleFeatureIterator

Methods

IterateLayers(Viewport, IEnumerable<ILayer>, long, Action<Viewport, ILayer, IStyle, IFeature, float, long>, Action<ILayer>?, MRect?)

Iterates over all visible features in the given layers and calls callback for each feature/style combination that should be rendered. Layers that are disabled or outside their visible resolution range are skipped.

Declaration

public static void IterateLayers(Viewport viewport, IEnumerable<ILayer> layers, long iteration, Action<Viewport, ILayer, IStyle, IFeature, float, long> callback, Action<ILayer>? customLayerRendererCallback = null, MRect? queryExtent = null)

Parameters

Type	Name	Description
Viewport	viewport	The current viewport.
IEnumerable<ILayer>	layers	The layers to iterate.
long	iteration	A monotonically increasing counter used to track render cycles.
Action<Viewport, ILayer, IStyle, IFeature, float, long>	callback	Called for each (viewport, layer, style, feature, opacity, iteration) combination.
Action<ILayer>	customLayerRendererCallback	Optional callback for layers that use a custom renderer (identified by ILayer.CustomLayerRendererName). When provided, such layers call this instead of the normal feature callback.
MRect	queryExtent	World-coordinate extent to use when querying features from each layer. Defaults to the full viewport extent when null. Pass a smaller rect to limit feature queries during partial rendering.