Ray casts

This page supplements the AR Foundation Ray casts manual. The following sections only contain information about APIs where Google's Android XR runtime exhibits 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

Android XR supports ray casting from a ray and direction (world based ray casts). Android XR 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

Android XR supports ray casting against the following trackable types:

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