DistantLight Class

Reference

Definition

Namespace:: Windows.UI.Composition

Important

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An infinitely large distant light source that emits light in a single direction. For example, a distant light could be used to represent sunlight.

public ref class DistantLight sealed : CompositionLight

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 196608)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class DistantLight final : CompositionLight

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 196608)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class DistantLight : CompositionLight

Public NotInheritable Class DistantLight
Inherits CompositionLight

Inheritance: Object Platform::Object IInspectable CompositionObject CompositionLight DistantLight

Attributes: ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Windows requirements

Device family	Windows 10 Anniversary Edition (introduced in 10.0.14393.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v3.0)

Examples

_distantLight = _compositor.CreateDistantLight(); 
_distantLight.Color = Colors.Yellow; 
_distantLight.Direction = new Vector3(0,-1, 0); 
_distantLight.CoordinateSpace = root; 
_distantLight.Targets.Add(root);

Remarks

DistantLights and SpotLights support direction.

DistantLight is one of the four light types derived from CompositionLight.

Light	Description
AmbientLight	A light source that emits non directional light that appears to have been reflected by everything in the scene.
DistantLight	An infinitely large distant light source that emits light in a single direction.
PointLight	A point source of light that emits light in all directions.
SpotLight	A light source that emits inner and outer cones of light.

Note

A Visual cannot be targeted by more than two non-ambient lights (PointLight, SpotLight or DistantLight).

Version history

Windows version	SDK version	Value added
1709	16299	Intensity

Properties

Color	Color of the emitted DistantLight.
Comment	A string to associate with the CompositionObject. (Inherited from CompositionObject)
Compositor	The Compositor used to create this CompositionObject. (Inherited from CompositionObject)
CoordinateSpace	The Visual used to determine the light’s direction. The light's Direction property is relative to this Visual’s coordinate space. `CoordinateSpace` is a required property. If CoordinateSpace is not set, the DistantLight will not render.
Direction	The direction in which the light is pointing, specified relative to its CoordinateSpace Visual.
Dispatcher	The dispatcher for the CompositionObject. (Inherited from CompositionObject)
DispatcherQueue	Gets the DispatcherQueue for the CompostionObject. (Inherited from CompositionObject)
ExclusionsFromTargets	Gets a collection of Visuals that are not targeted by the light. (Inherited from CompositionLight)
ImplicitAnimations	The collection of implicit animations attached to this object. (Inherited from CompositionObject)
Intensity	Gets or sets the intensity of the light.
IsEnabled	Gets or sets a value that determines whether the composition light is on. (Inherited from CompositionLight)
Properties	The collection of properties associated with the CompositionObject. (Inherited from CompositionObject)
Targets	The collection of Visuals targeted by the light. (Inherited from CompositionLight)

Methods

Close()	Closes the CompositionObject and releases system resources. (Inherited from CompositionObject)
ConnectAnimation(String, CompositionAnimation)	Connects and animation. (Inherited from CompositionObject)
DisconnectAnimation(String)	Disconnects an animation. (Inherited from CompositionObject)
Dispose()	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from CompositionObject)
PopulatePropertyInfo(String, AnimationPropertyInfo)	Defines a property that can be animated. (Inherited from CompositionObject)
StartAnimation(String, CompositionAnimation)	Connects an animation with the specified property of the object and starts the animation. (Inherited from CompositionObject)
StartAnimation(String, CompositionAnimation, AnimationController)	Connects an animation with the specified property of the object and starts the animation. (Inherited from CompositionObject)
StartAnimationGroup(ICompositionAnimationBase)	Starts an animation group. The StartAnimationGroup method on CompositionObject lets you start CompositionAnimationGroup. All the animations in the group will be started at the same time on the object. (Inherited from CompositionObject)
StopAnimation(String)	Disconnects an animation from the specified property and stops the animation. (Inherited from CompositionObject)
StopAnimationGroup(ICompositionAnimationBase)	Stops an animation group. (Inherited from CompositionObject)
TryGetAnimationController(String)	Returns an AnimationController for the animation running on the specified property. (Inherited from CompositionObject)

Applies to