Class ScreenSpaceAmbientOcclusionN8

Screen Space Ambient Occlusion (SSAO) effect.

Link

N8AO documentation

Hierarchy (view full)

Constructors

constructor

Properties

aoRadius color falloff gameObject guid intensity quality screenspaceRadius sourceId?

Accessors

activeAndEnabled context destroyed enabled forward hideFlags isPostProcessingEffect layer name postprocessingContext right scene static tag typeName up worldEuler worldPosition worldQuaternion worldRotation

Methods

addEventListener apply awake destroy dispatchEvent dispose earlyUpdate? init lateUpdate? onAfterRender? onBeforeRender? onBeforeXR? onCollisionEnter? onCollisionExit? onCollisionStay? onCreateEffect onDestroy onDisable onEditorModification onEffectEnabled onEnable onEnterXR? onLeaveXR? onPausedChanged? onPointerClick? onPointerDown? onPointerEnter? onPointerExit? onPointerMove? onPointerUp? onTriggerEnter? onTriggerExit? onTriggerStay? onUpdateXR? onValidate onXRControllerAdded? onXRControllerRemoved? removeEventListener resolveGuids? setWorldPosition setWorldQuaternion setWorldRotation start? startCoroutine stopCoroutine supportsXR? unapply update?

Constructors

constructor

Properties

aoRadius

aoRadius: VolumeParameter = ...

The most important parameter for your ambient occlusion effect. Controls the radius/size of the ambient occlusion in world units. Should be set to how far you want the occlusion to extend from a given object. Set it too low, and AO becomes an edge detector. Too high, and the AO becomes "soft" and might not highlight the details you want. The radius should be one or two magnitudes less than scene scale: if your scene is 10 units across, the radius should be between 0.1 and 1. If its 100, 1 to 10.

Default

1

color

color: VolumeParameter = ...

The color of the ambient occlusion. By default, it is black, but it can be changed to any color to offer a crude approximation of global illumination. Recommended in scenes where bounced light has a uniform "color", for instance a scene that is predominantly lit by a blue sky. The color is expected to be in the sRGB color space, and is automatically converted to linear space for you. Keep the color pretty dark for sensible results.

Default

new Color(0, 0, 0)

falloff

falloff: VolumeParameter = ...

The second most important parameter for your ambient occlusion effect. Controls how fast the ambient occlusion fades away with distance in proportion to its radius. Defaults to 1, and behind-the-scenes, is a calculated as a ratio of your radius (0.2 * distanceFalloff is the size used for attenuation). Decreasing it reduces "haloing" artifacts and improves the accuracy of your occlusion, but making it too small makes the ambient occlusion disappear entirely.

Default

1

gameObject

gameObject: GameObject

the object this component is attached to. Note that this is a threejs Object3D with some additional features

guid

guid: string = "invalid"

the unique identifier for this component

intensity

intensity: VolumeParameter = ...

A purely artistic control for the intensity of the AO - runs the ao through the function pow(ao, intensity), which has the effect of darkening areas with more ambient occlusion. Useful to make the effect more pronounced. An intensity of 2 generally produces soft ambient occlusion that isn't too noticeable, whereas one of 5 produces heavily prominent ambient occlusion.

Default

1

quality

quality: ScreenSpaceAmbientOcclusionN8QualityMode = ScreenSpaceAmbientOcclusionN8QualityMode.Medium

The quality of the ambient occlusion effect.

Default

ScreenSpaceAmbientOcclusionN8QualityMode.Medium

screenspaceRadius

screenspaceRadius: boolean = false

If you want the AO to calculate the radius based on screen space, you can do so by setting configuration.screenSpaceRadius to true. This is useful for scenes where the camera is moving across different scales a lot, or for scenes where the camera is very close to the objects.

Default

false

OptionalsourceId

sourceId?: string

holds the source identifier this object was created with/from (e.g. if it was part of a glTF file the sourceId holds the url to the glTF)

Accessors

activeAndEnabled

  • get activeAndEnabled(): boolean

  • Returns boolean

    true if the object is enabled and active in the hierarchy

context

  • get context(): Context

  • Use the context to get access to many Needle Engine features and use physics, timing, access the camera or scene

    Returns Context

  • set context(context): void

  • Parameters

    Returns void

destroyed

  • get destroyed(): boolean

  • Returns boolean

    true if this component was destroyed (this.destroy()) or the whole object this component was part of

enabled

  • get enabled(): boolean

  • Returns boolean

  • set enabled(val): void

  • Parameters

    • val: boolean

    Returns void

forward

  • get forward(): Vector3

  • Forward (0,0,-1) vector in world space

    Returns Vector3

hideFlags

  • get hideFlags(): HideFlags

  • Returns HideFlags

isPostProcessingEffect

  • get isPostProcessingEffect(): boolean

  • Returns boolean

layer

  • get layer(): number

  • Returns number

    the layer of the gameObject this component is attached to

name

  • get name(): string

  • Returns string

    the name of the gameObject this component is attached to

  • set name(str): void

  • Parameters

    • str: string

    Returns void

ProtectedpostprocessingContext

  • get postprocessingContext(): null | PostProcessingEffectContext

  • Returns null | PostProcessingEffectContext

right

  • get right(): Vector3

  • Right (1,0,0) vector in world space

    Returns Vector3

scene

  • get scene(): Scene

  • shorthand for this.context.scene

    Returns Scene

    the scene of the context

static

  • get static(): boolean

  • Is the gameObject marked as static

    Returns boolean

  • set static(value): void

  • Parameters

    • value: boolean

    Returns void

tag

  • get tag(): string

  • Returns string

    the tag of the gameObject this component is attached to

  • set tag(str): void

  • Parameters

    • str: string

    Returns void

typeName

  • get typeName(): string

  • Returns string

up

  • get up(): Vector3

  • Up (0,1,0) vector in world space

    Returns Vector3

worldEuler

  • get worldEuler(): Euler

  • Returns Euler

  • set worldEuler(val): void

  • Parameters

    Returns void

worldPosition

  • get worldPosition(): Vector3

  • Returns Vector3

  • set worldPosition(val): void

  • Parameters

    Returns void

worldQuaternion

  • get worldQuaternion(): Quaternion

  • Returns Quaternion

  • set worldQuaternion(val): void

  • Parameters

    Returns void

worldRotation

  • get worldRotation(): Vector3

  • Returns Vector3

  • set worldRotation(val): void

  • Parameters

    Returns void

Methods

addEventListener

  • addEventListener<T>(type, listener): void

  • Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

    The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

    When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

    When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

    When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

    If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.

    The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture.

    MDN Reference

    Type Parameters

    Parameters

    • type: string
    • listener: ((evt: T) => any)
        • (evt): any

        • Parameters

          • evt: T

          Returns any

    Returns void

apply

  • apply(ctx): undefined | void | EffectProviderResult

  • Apply post settings. Make sure to call super.apply() if you also create an effect

    Parameters

    • ctx: PostProcessingEffectContext

    Returns undefined | void | EffectProviderResult

awake

  • awake(): void

  • called once when the component becomes active for the first time (once per component)
    This is the first callback to be called

    Returns void

destroy

dispatchEvent

  • dispatchEvent(evt): boolean

  • Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.

    MDN Reference

    Parameters

    Returns boolean

dispose

OptionalearlyUpdate

init

OptionallateUpdate

OptionalonAfterRender

OptionalonBeforeRender

  • onBeforeRender(frame): void

  • called before the scene gets rendered in the main update loop

    Parameters

    • frame: null | XRFrame

    Returns void

OptionalonBeforeXR

  • onBeforeXR(mode, args): void

  • Called before the XR session is requested. Use this callback if you want to modify the session init features

    Parameters

    • mode: XRSessionMode
    • args: XRSessionInit

    Returns void

OptionalonCollisionEnter

OptionalonCollisionExit

OptionalonCollisionStay

onCreateEffect

  • onCreateEffect(): EffectProviderResult

  • implement to create a effect once to be cached in the base class. Make sure super.apply() is called if you also override apply

    Returns EffectProviderResult

onDestroy

onDisable

  • onDisable(): void

  • called every time the component gets disabled or if a parent object (or this.gameObject) gets set to invisible

    Returns void

onEditorModification

  • onEditorModification(modification): undefined | boolean | void

  • Called when a modification is made through the external editor (called from @needle-tools/editor-sync)

    Parameters

    • modification: EditorModification

      The modification that was made in the external editor

    Returns undefined | boolean | void

    false if you want the editor package to apply the modification. Otherwise it's expected that your code handles applying the change

ProtectedonEffectEnabled

onEnable

  • onEnable(): void

  • called every time when the component gets enabled (this is invoked after awake and before start)
    or when it becomes active in the hierarchy (e.g. if a parent object or this.gameObject gets set to visible)

    Returns void

OptionalonEnterXR

OptionalonLeaveXR

OptionalonPausedChanged

  • onPausedChanged(isPaused, wasPaused): void

  • Called for all scripts when the context gets paused or unpaused

    Parameters

    • isPaused: boolean
    • wasPaused: boolean

    Returns void

OptionalonPointerClick

OptionalonPointerDown

OptionalonPointerEnter

OptionalonPointerExit

  • onPointerExit(args): any

  • Called when a pointer (mouse, touch, xr controller) exists an object (it was hovering the object before but now it's not anymore)

    Parameters

    Returns any

OptionalonPointerMove

OptionalonPointerUp

OptionalonTriggerEnter

OptionalonTriggerExit

OptionalonTriggerStay

OptionalonUpdateXR

onValidate

OptionalonXRControllerAdded

  • onXRControllerAdded(args): void

  • Callback when a controller is connected/added while in a XR session
    OR when the component joins a running XR session that has already connected controllers
    OR when the component becomes active during a running XR session that has already connected controllers

    Parameters

    Returns void

OptionalonXRControllerRemoved

removeEventListener

  • removeEventListener<T>(type, listener): void

  • Removes the event listener in target's event listener list with the same type, callback, and options.

    MDN Reference

    Type Parameters

    Parameters

    • type: string
    • listener: ((arg: T) => any)
        • (arg): any

        • Parameters

          • arg: T

          Returns any

    Returns void

OptionalresolveGuids

  • resolveGuids(guidsMap): void

  • called on a component with a map of old to new guids (e.g. when instantiate generated new guids and e.g. timeline track bindings needs to remape them)

    Parameters

    • guidsMap: GuidsMap

    Returns void

setWorldPosition

setWorldQuaternion

setWorldRotation

Optionalstart

startCoroutine

  • startCoroutine(routine, evt?): Generator<unknown, any, unknown>

  • starts a coroutine (javascript generator function)
    yield will wait for the next frame:

    • Use yield WaitForSeconds(1) to wait for 1 second.
    • Use yield WaitForFrames(10) to wait for 10 frames.
    • Use yield new Promise(...) to wait for a promise to resolve.

    Parameters

    • routine: Generator<unknown, any, unknown>

      generator function to start

    • evt: FrameEvent = FrameEvent.Update

      event to register the coroutine for (default: FrameEvent.Update). Note that all coroutine FrameEvent callbacks are invoked after the matching regular component callbacks. For example FrameEvent.Update will be called after regular component update() methods)

    Returns Generator<unknown, any, unknown>

    the generator function (use it to stop the coroutine with stopCoroutine)

    Example

    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, evt?): void

  • Stop a coroutine that was previously started with startCoroutine

    Parameters

    • routine: Generator<unknown, any, unknown>

      the routine to be stopped

    • evt: FrameEvent = FrameEvent.Update

      the frame event to unregister the routine from (default: FrameEvent.Update)

    Returns void

OptionalsupportsXR

  • supportsXR(mode): boolean

  • Optional callback, you can implement this to only get callbacks for VR or AR sessions if necessary.

    Parameters

    • mode: XRSessionMode

    Returns boolean

    true if the mode is supported (if false the mode is not supported by this component and it will not receive XR callbacks for this mode)

unapply

  • unapply(): void

  • Reset previously set values (e.g. when adjusting settings on the renderer like Tonemapping)

    Returns void

Optionalupdate

  • update(): void

  • regular callback in a frame (called every frame when implemented)

    Returns void

Settings

Member Visibility

On This Page

Constructors
Properties
Accessors
Methods