Class ReflectionProbe

The ReflectionProbe provides environment reflection data to materials within its defined area. Use for chrome-like materials that need accurate environment reflections.

Setup:

  1. Add ReflectionProbe component to an object
  2. Assign a cubemap or HDR texture
  3. In Renderer components, assign the probe as anchor override

Note: Volume-based automatic assignment is not fully supported yet.
Objects (Renderer components) can explicitly reference their reflection probe.

Debug options:

See

  • Renderer for material and rendering control
  • Light for scene lighting

Hierarchy (View Summary)

Constructors

constructor

Properties

__lightmapIntensityScale center gameObject guid intensity size sourceId? onDisabled onEnabled

Accessors

[$componentName] activeAndEnabled context destroyed enabled forward layer name right scene static tag texture up worldEuler worldPosition worldQuaternion worldRotation

Methods

addEventListener apply destroy dispatchEvent earlyUpdate? lateUpdate? onAfterRender? onBeforeRender? onBeforeXR? onCollisionEnter? onCollisionExit? onCollisionStay? onEnterXR? onLeaveXR? onPausedChanged? onPointerClick? onPointerDown? onPointerEnter? onPointerExit? onPointerMove? onPointerUp? onTriggerEnter? onTriggerExit? onTriggerStay? onUpdateXR? onValidate? onXRControllerAdded? onXRControllerRemoved? removeEventListener resolveGuids? setWorldPosition setWorldQuaternion setWorldRotation startCoroutine stopCoroutine supportsXR? unapply get isUsingReflectionProbe

Constructors

constructor

Properties

__lightmapIntensityScale

__lightmapIntensityScale: boolean = true

Workaround for lightmap. Compensates for the fact that lightmaps are pre-multiplied by intensity, while reflection probes are not. This means that if you use both lightmaps and reflection probes, you may need to adjust this value to get the correct balance between them. The default value of Math.PI is a good starting point for most cases, but you may need to tweak it based on your specific lighting setup and artistic needs.

center

center: Vector3 = ...

Defines the center of the reflection probe's influence area relative to the GameObject's position.
The probe will affect objects within a box defined by this center and the size property.
Note: The actual influence area is determined by both the center and size properties. The center defines the offset from the GameObject's position, while the size defines the dimensions of the box around that center. Objects within this box will be influenced by the reflection probe.

gameObject

gameObject: GameObject

Reference to the GameObject this component is attached to This is a three.js Object3D with additional GameObject functionality

guid

guid: string = "invalid"

Unique identifier for this component instance, used for finding and tracking components

intensity

intensity: number = 1

The intensity of the reflection probe's influence.
Higher values will make reflections brighter, while lower values will make them dimmer.
The default value is 1, which means the reflections will be applied at their original brightness. Adjust this value to achieve the desired look for your scene.

Default

1

size

size: Vector3 = ...

Defines the size of the reflection probe's influence area. Objects within this box will be affected by the probe's reflections.
Note: The actual influence area is determined by both the center and size properties. The center defines the offset from the GameObject's position, while the size defines the dimensions of the box around that center. Objects within this box will be influenced by the reflection probe.

OptionalsourceId

sourceId?: string

Identifier for the source asset that created this component. For example, URL to the glTF file this component was loaded from

Static ReadonlyonDisabled

onDisabled: EventList<ReflectionProbe> = ...

Event invoked when a reflection probe is disabled. Used internally by Renderer components to update probes when they become inactive. Not recommended to call this directly in most cases.

See

onEnabled for the corresponding enable event.

Static ReadonlyonEnabled

onEnabled: EventList<ReflectionProbe> = ...

Event invoked when a reflection probe is enabled. Used internally by Renderer components to update probes when they become active. Not recommended to call this directly in most cases.

See

onDisabled for the corresponding disable event.

Accessors

[$componentName]

  • get "[$componentName]"(): undefined | string

    Get the original component type name before minification (available if the component is registered in the TypeStore)

    Returns undefined | string

activeAndEnabled

  • get activeAndEnabled(): boolean

    Checks if this component is currently active (enabled and part of an active GameObject hierarchy) Components that are inactive won't receive lifecycle method calls

    Returns boolean

    True if the component is enabled and all parent GameObjects are active

context

  • get context(): Context

    The context this component belongs to, providing access to the runtime environment including physics, timing utilities, camera, and scene

    Returns Context

  • set context(context: Context): void

    Parameters

    Returns void

destroyed

  • get destroyed(): boolean

    Checks if this component has been destroyed

    Returns boolean

    True if the component or its GameObject has been destroyed

enabled

  • get enabled(): boolean

    Controls whether this component is enabled Disabled components don't receive lifecycle callbacks

    Returns boolean

  • set enabled(val: boolean): void

    Parameters

    • val: boolean

    Returns void

forward

  • get forward(): Vector3

    Gets the forward direction vector (0,0,-1) of this component's GameObject in world space

    Returns Vector3

layer

  • get layer(): number

    The layer value of the GameObject this component is attached to Used for visibility and physics filtering

    Returns number

name

  • get name(): string

    The name of the GameObject this component is attached to Used for debugging and finding objects

    Returns string

  • set name(str: string): void

    Parameters

    • str: string

    Returns void

right

  • get right(): Vector3

    Gets the right direction vector (1,0,0) of this component's GameObject in world space

    Returns Vector3

scene

  • get scene(): Scene

    Shorthand accessor for the current scene from the context

    Returns Scene

    The scene this component belongs to

static

  • get static(): boolean

    Indicates whether the GameObject is marked as static Static objects typically don't move and can be optimized by the engine

    Returns boolean

  • set static(value: boolean): void

    Parameters

    • value: boolean

    Returns void

tag

  • get tag(): string

    The tag of the GameObject this component is attached to Used for categorizing objects and efficient lookup

    Returns string

  • set tag(str: string): void

    Parameters

    • str: string

    Returns void

texture

  • get texture(): null | Texture

    Returns null | Texture

  • set texture(tex: null | Texture): void

    The cubemap or HDR texture used for reflections. Can be assigned directly or via a URL string.
    When assigning via URL, the texture will be loaded asynchronously and applied once ready.

    Parameters

    • tex: null | Texture

      The texture or URL to assign to this reflection probe

    Returns void

    Default

    null

up

  • get up(): Vector3

    Gets the up direction vector (0,1,0) of this component's GameObject in world space

    Returns Vector3

worldEuler

  • get worldEuler(): Euler

    Gets the rotation of this component's GameObject in world space as Euler angles (in radians)

    Returns Euler

  • set worldEuler(val: Euler): void

    Sets the rotation of this component's GameObject in world space using Euler angles (in radians)

    Parameters

    • val: Euler

      The world rotation Euler angles to set

    Returns void

worldPosition

  • get worldPosition(): Vector3

    Gets the position of this component's GameObject in world space.
    Note: This is equivalent to calling this.gameObject.worldPosition

    Returns Vector3

  • set worldPosition(val: Vector3): void

    Sets the position of this component's GameObject in world space

    Parameters

    • val: Vector3

      The world position vector to set

    Returns void

worldQuaternion

  • get worldQuaternion(): Quaternion

    Gets the rotation of this component's GameObject in world space as a quaternion Note: This is equivalent to calling this.gameObject.worldQuaternion

    Returns Quaternion

  • set worldQuaternion(val: Quaternion): void

    Sets the rotation of this component's GameObject in world space using a quaternion

    Parameters

    • val: Quaternion

      The world rotation quaternion to set

    Returns void

worldRotation

  • get worldRotation(): Vector3

    Gets the rotation of this component's GameObject in world space as Euler angles (in degrees)
    Note: This is equivalent to calling this.gameObject.worldRotation

    Returns Vector3

  • set worldRotation(val: Vector3): void

    Sets the rotation of this component's GameObject in world space using Euler angles (in degrees)

    Parameters

    • val: Vector3

      The world rotation vector to set (in degrees)

    Returns void

Methods

addEventListener

  • addEventListener<T extends Event>(type: string, listener: (evt: T) => any): void

    Registers an event listener for the specified event type

    Type Parameters

    Parameters

    • type: string

      The event type to listen for

    • listener: (evt: T) => any

      The callback function to execute when the event occurs

    Returns void

apply

  • apply(object: Object3D): void

    Applies this reflection probe to the given object by setting material property overrides for "envMap", "envMapRotation", and "envMapIntensity".
    This is typically called by the Renderer component when determining which reflection probe to use for a given object.

    Parameters

    • object: Object3D

      The object to apply the reflection probe to

    Returns void

    See

    unapply for the corresponding method to remove the probe's influence from an object.

destroy

  • destroy(): void

    Destroys this component and removes it from its GameObject After destruction, the component will no longer receive lifecycle callbacks

    Returns void

dispatchEvent

  • dispatchEvent(evt: Event): boolean

    Dispatches an event to all registered listeners

    Parameters

    • evt: Event

      The event object to dispatch

    Returns boolean

    Always returns false (standard implementation of EventTarget)

OptionalearlyUpdate

  • earlyUpdate(): void

    Called at the beginning of each frame before regular updates. Use for logic that needs to run before standard update callbacks.

    Returns void

OptionallateUpdate

  • lateUpdate(): void

    Called after all update functions have been called. Use for calculations that depend on other components being updated first.

    Returns void

OptionalonAfterRender

  • onAfterRender(): void

    Called after the scene has been rendered. Use for post-processing or UI updates that should happen after rendering

    Returns void

OptionalonBeforeRender

  • onBeforeRender(frame: null | XRFrame): void

    Called immediately before the scene is rendered.

    Parameters

    • frame: null | XRFrame

      Current XRFrame if in an XR session, null otherwise

    Returns void

OptionalonBeforeXR

  • onBeforeXR(mode: XRSessionMode, args: XRSessionInit): void

    Called before an XR session is requested Use to modify session initialization parameters

    Parameters

    • mode: XRSessionMode

      The XR session mode being requested

    • args: XRSessionInit

      The session initialization parameters that can be modified

    Returns void

OptionalonCollisionEnter

  • onCollisionEnter(col: Collision): any

    Called when this component's collider begins colliding with another collider.

    Parameters

    • col: Collision

      Information about the collision that occurred

    Returns any

OptionalonCollisionExit

  • onCollisionExit(col: Collision): any

    Called when this component's collider stops colliding with another collider.

    Parameters

    • col: Collision

      Information about the collision that ended

    Returns any

OptionalonCollisionStay

  • onCollisionStay(col: Collision): any

    Called each frame while this component's collider is colliding with another collider

    Parameters

    • col: Collision

      Information about the ongoing collision

    Returns any

OptionalonEnterXR

OptionalonLeaveXR

OptionalonPausedChanged

  • onPausedChanged(isPaused: boolean, wasPaused: boolean): void

    Called when the context's pause state changes.

    Parameters

    • isPaused: boolean

      Whether the context is currently paused

    • wasPaused: boolean

      The previous pause state

    Returns void

OptionalonPointerClick

OptionalonPointerDown

OptionalonPointerEnter

OptionalonPointerExit

OptionalonPointerMove

OptionalonPointerUp

OptionalonTriggerEnter

  • onTriggerEnter(col: ICollider): any

    Called when this component's trigger collider is entered by another collider

    Parameters

    • col: ICollider

      The collider that entered this trigger

    Returns any

OptionalonTriggerExit

  • onTriggerExit(col: ICollider): any

    Called when another collider exits this component's trigger collider

    Parameters

    • col: ICollider

      The collider that exited this trigger

    Returns any

OptionalonTriggerStay

  • onTriggerStay(col: ICollider): any

    Called each frame while another collider is inside this component's trigger collider

    Parameters

    • col: ICollider

      The collider that is inside this trigger

    Returns any

OptionalonUpdateXR

OptionalonValidate

  • onValidate(prop?: string): void

    Called when a field decorated with @validate() is modified.

    Parameters

    • Optionalprop: string

      The name of the field that was changed

    Returns void

OptionalonXRControllerAdded

OptionalonXRControllerRemoved

removeEventListener

  • removeEventListener<T extends Event>(
        type: string,
        listener: (arg: T) => any,
    ): void

    Removes a previously registered event listener

    Type Parameters

    Parameters

    • type: string

      The event type the listener was registered for

    • listener: (arg: T) => any

      The callback function to remove

    Returns void

OptionalresolveGuids

  • resolveGuids(guidsMap: GuidsMap): void

    Called when this component needs to remap guids after an instantiate operation.

    Parameters

    • guidsMap: GuidsMap

      Mapping from old guids to newly generated guids

    Returns void

setWorldPosition

  • setWorldPosition(x: number, y: number, z: number): void

    Sets the position of this component's GameObject in world space using individual coordinates

    Parameters

    • x: number

      X-coordinate in world space

    • y: number

      Y-coordinate in world space

    • z: number

      Z-coordinate in world space

    Returns void

setWorldQuaternion

  • setWorldQuaternion(x: number, y: number, z: number, w: number): void

    Sets the rotation of this component's GameObject in world space using quaternion components

    Parameters

    • x: number

      X component of the quaternion

    • y: number

      Y component of the quaternion

    • z: number

      Z component of the quaternion

    • w: number

      W component of the quaternion

    Returns void

setWorldRotation

  • setWorldRotation(x: number, y: number, z: number, degrees?: boolean): void

    Sets the rotation of this component's GameObject in world space using individual Euler angles

    Parameters

    • x: number

      X-axis rotation

    • y: number

      Y-axis rotation

    • z: number

      Z-axis rotation

    • degrees: boolean = true

      Whether the values are in degrees (true) or radians (false)

    Returns void

startCoroutine

  • startCoroutine(routine: Generator, evt?: FrameEvent): Generator

    Starts a coroutine that can yield to wait for events. Coroutines allow for time-based sequencing of operations without blocking. Coroutines are based on generator functions, a JavaScript language feature.

    Parameters

    • routine: Generator

      Generator function to start

    • evt: FrameEvent = FrameEvent.Update

      Event to register the coroutine for (default: FrameEvent.Update)

    Returns Generator

    The generator function that can be used to stop the coroutine

    Example

    Time-based sequencing of operations

    *myCoroutine() {
      yield WaitForSeconds(1); // wait for 1 second
      yield WaitForFrames(10); // wait for 10 frames
      yield new Promise(resolve => setTimeout(resolve, 1000)); // wait for a promise to resolve
    }

    Example

    Coroutine that logs a message every 5 frames

    onEnable() {
      this.startCoroutine(this.myCoroutine());
    }
    private *myCoroutine() {
      while(this.activeAndEnabled) {
        console.log("Hello World", this.context.time.frame);
        // wait for 5 frames
        for(let i = 0; i < 5; i++) yield;
      }
    }

stopCoroutine

  • stopCoroutine(routine: Generator, evt?: FrameEvent): void

    Stops a coroutine that was previously started with startCoroutine

    Parameters

    • routine: Generator

      The routine to be stopped

    • evt: FrameEvent = FrameEvent.Update

      The frame event the routine was registered with

    Returns void

OptionalsupportsXR

  • supportsXR(mode: XRSessionMode): boolean

    Determines if this component supports a specific XR mode

    Parameters

    • mode: XRSessionMode

      The XR session mode to check support for

    Returns boolean

    True if the component supports the specified mode

unapply

  • unapply(obj: Object3D): void

    Removes the reflection probe overrides from the given object.
    This is typically called by the Renderer component when an object is no longer influenced by this probe or when the probe is disabled.

    Parameters

    Returns void

    See

    apply for the corresponding method to apply the probe's influence to an object.

Staticget

  • get(
        object: undefined | null | Object3D<Object3DEventMap>,
        context: Context,
        isAnchor: boolean,
        anchor?: Object3D<Object3DEventMap>,
    ): null | ReflectionProbe

    Gets the active reflection probe for the given object and context. If isAnchor is true, it will only return a probe if the object is the anchor of that probe. Otherwise, it checks if the object is within the probe's influence area.

    Note: This method is used internally by the Renderer component to determine which reflection probe to apply. It is not recommended to call this method directly in most cases. Instead, assign probes to renderers using the "anchor" property or rely on automatic assignment when supported.
    Note: Volume-based automatic assignment is not fully supported yet, so explicit assignment is recommended for now.

    Parameters

    • object: undefined | null | Object3D<Object3DEventMap>

      The object to find a reflection probe for

    • context: Context

      The context to search within

    • isAnchor: boolean

      If true, only return a probe if the object is the anchor of that probe

    • Optionalanchor: Object3D<Object3DEventMap>

      Optional anchor object to match against probes

    Returns null | ReflectionProbe

StaticisUsingReflectionProbe

  • isUsingReflectionProbe(material: Material): boolean

    Checks if the given material is currently using a reflection probe.
    This is determined by checking for an override on the material's "envMap" property, which is set by the Renderer component when applying a reflection probe.

    Parameters

    Returns boolean

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