Eye

public final @NonNull StateFlow<@NonNull Eye.State> getState()

public static final Eye left(@NonNull Session session)

import androidx.xr.arcore.ArDevice import androidx.xr.arcore.Eye import androidx.xr.arcore.hitTest import androidx.xr.runtime.Session import androidx.xr.runtime.TrackingState import androidx.xr.runtime.math.Ray import androidx.xr.scenecore.scene // We need the ArDevice object to properly transform the eye pose coordinate space into // something we can use. val arDevice = ArDevice.getInstance(session) // Obtain the left eye from the Session object. Eye.left(session)?.let {  // The left eye is available; launch a coroutine  // to respond to changes in the eye's state.  yourCoroutineScope.launch {  it.state.collect { eyeState ->  // Early out if the eye is not reported as tracking  if (eyeState.trackingState != TrackingState.TRACKING) return@collect  // We are only interested in the eye pose if it is open, so early out if it is  // closed as well.  if (!eyeState.isOpen) return@collect  // The pose we get from the eye is the actual pose of the eye. We want to turn that  // into something we can use for interacting with other objects in the scene (for  // example, a hit test). To do that, we need to convert the eye pose into the  // correct coordinate space, and then use it to create a `Ray` we can pass to the  // `hitTest()` function.  //  // Unlike most other objects, which are reported in the perception coordinate space,  // the eye pose is reported in the device coordinate space. So we'll first need to  // convert the device pose into the activity space (via the perception space), and  // then we can use that to convert the eye pose in to the activity space.  val transformedPose =  eyeState.pose.let { pose ->  val headPose =  session.scene.perceptionSpace.getScenePoseFromPerceptionPose(  arDevice.state.value.devicePose  )  headPose.transformPoseTo(pose, session.scene.activitySpace)  }  val gazeRay = Ray(transformedPose.translation, transformedPose.backward)  val hits = hitTest(session, gazeRay)  yourHitTestHandler(hits)  }  } }

public static final Eye right(@NonNull Session session)

import androidx.xr.arcore.ArDevice import androidx.xr.arcore.Eye import androidx.xr.arcore.hitTest import androidx.xr.runtime.Session import androidx.xr.runtime.TrackingState import androidx.xr.runtime.math.Ray import androidx.xr.scenecore.scene // We need the ArDevice object to properly transform the eye pose coordinate space into // something we can use. val arDevice = ArDevice.getInstance(session) // Obtain the right eye from the Session object. Eye.right(session)?.let {  // The left eye is available; launch a coroutine  // to respond to changes in the eye's state.  yourCoroutineScope.launch {  it.state.collect { eyeState ->  // Early out if the eye is not reported as tracking  if (eyeState.trackingState != TrackingState.TRACKING) return@collect  // We are only interested in the eye pose if it is open, so early out if it is  // closed as well.  if (!eyeState.isOpen) return@collect  // The pose we get from the eye is the actual pose of the eye. We want to turn that  // into something we can use for interacting with other objects in the scene (for  // example, a hit test). To do that, we need to convert the eye pose into the  // correct coordinate space, and then use it to create a `Ray` we can pass to the  // `hitTest()` function.  //  // Unlike most other objects, which are reported in the perception coordinate space,  // the eye pose is reported in the device coordinate space. So we'll first need to  // convert the device pose into the activity space (via the perception space), and  // then we can use that to convert the eye pose in to the activity space.  val transformedPose =  eyeState.pose.let { pose ->  val headPose =  session.scene.perceptionSpace.getScenePoseFromPerceptionPose(  arDevice.state.value.devicePose  )  headPose.transformPoseTo(pose, session.scene.activitySpace)  }  val gazeRay = Ray(transformedPose.translation, transformedPose.backward)  val hits = hitTest(session, gazeRay)  yourHitTestHandler(hits)  }  } }