# FxLight A structure that contains lighting information. ``` struct FxLight ``` ## Overview Note that the FxLight structure uses in FxPlug 4, and replaces `FxLightInfo` from `FxLightingAPI` and `FxLightInfo_V1` from `FxLightingAPI_v2`. ## Topics ### Properties [`var version: Int`](/documentation/professional_video_applications/FxLight/version) The version of a lighting information structure. [`var time: CMTime`](/documentation/professional_video_applications/FxLight/time) The time of the lighting information. [`var lightType: FxLightType`](/documentation/professional_video_applications/FxLight/lightType) The type of light, whether ambient, directional, point, or spot. [`var color: Unmanaged!`](/documentation/professional_video_applications/FxLight/color) The color of the light. [`var intensity: Float`](/documentation/professional_video_applications/FxLight/intensity) The brightness with which the light illuminates objects. [`var constantAttenuation: Float`](/documentation/professional_video_applications/FxLight/constantAttenuation) The constant term of the lighting falloff equation. [`var linearAttenuation: Float`](/documentation/professional_video_applications/FxLight/linearAttenuation) The linear component of the lighting falloff equation. [`var quadraticAttenuation: Float`](/documentation/professional_video_applications/FxLight/quadraticAttenuation) The quadratic component of the lighting falloff equation. [`var castsShadows: ObjCBool`](/documentation/professional_video_applications/FxLight/castsShadows) A Boolean value that indicates whether a light casts shadows. [`var spotCutoff: Float`](/documentation/professional_video_applications/FxLight/spotCutoff) The angle, in radians, of the cone cutoff for spotlights. [`var spotPenumbraCutoff: Float`](/documentation/professional_video_applications/FxLight/spotPenumbraCutoff) The angle, in radians, of the cone penumbra cutoff for spotlights. [`var position: FxPoint3D`](/documentation/professional_video_applications/FxLight/position) The location of the light. [`var direction: FxPoint3D`](/documentation/professional_video_applications/FxLight/direction) The direction in which the light points. ### Initializers [`init()`](/documentation/professional_video_applications/FxLight/init()) Initializes an FxLight lighting information structure. [`init(version: Int, time: CMTime, lightType: FxLightType, color: Unmanaged!, intensity: Float, constantAttenuation: Float, linearAttenuation: Float, quadraticAttenuation: Float, castsShadows: ObjCBool, spotCutoff: Float, spotPenumbraCutoff: Float, position: FxPoint3D, direction: FxPoint3D)`](/documentation/professional_video_applications/FxLight/init(version:time:lightType:color:intensity:constantAttenuation:linearAttenuation:quadraticAttenuation:castsShadows:spotCutoff:spotPenumbraCutoff:position:direction:)) Initializes an FxLight lighting information structure with parameters. ## Relationships ### Conforms To [`Sendable`](/documentation/Swift/Sendable) [`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)