Ray casts

This page is a supplement to the AR Foundation Ray casts manual. The following sections only contain information about APIs where Meta Quest exhibits unique platform-specific behavior.

Tip

When developing an AR app, refer to both the AR Foundation documentation as well as the required packages for each platform you support.

Optional feature support

This package implements the following optional features of AR Foundation's XRRaycastSubsystem:

Feature	Descriptor Property	Supported
Viewport based raycast	supportsViewportBasedRaycast
World based raycast	supportsWorldBasedRaycast	Yes
Tracked raycasts	supportsTrackedRaycasts

Note

Refer to AR Foundation Ray cast platform support for more information on the optional features of the Raycast subsystem.

Supported trackables

This package supports ray casting against the following trackable types:

TrackableType	Supported
BoundingBox	Fallback
Depth	Yes
Face
FeaturePoint
Image
Planes
PlaneEstimated
PlaneWithinBounds	Fallback
PlaneWithinInfinity
PlaneWithinPolygon	Fallback

Fallback ray casts

Ray cast functionality in Unity OpenXR: Meta relies on both Meta's OpenXR runtime and AR Foundation's Fallback ray casts implementation. Meta's OpenXR runtime supports ray casts against the Depth trackable type. AR Foundation additionally enables you to Unity-world-space ray cast against the PlaneWithinPolygon, PlaneWithinBounds, and BoundingBox trackable types.

Important

If your app uses AR ray casts, you should use the ARRaycastManager APIs. Don't access MetaOpenXRRaycastSubsystem directly.