private void SetSpatialInteractionSourceLocation(SpatialInteractionSourceLocation location)
{
currentPosition = location.Position?.ToVector3() ?? currentPosition;
currentRotation = location.Orientation?.ToQuaternion() ?? currentRotation;
currentLinearVelocity = location.Velocity?.ToVector3() ?? currentLinearVelocity;
currentAngularVelocity = location.AngularVelocity?.ToVector3() ?? currentAngularVelocity;
}
private void sourceUpdate(SpatialInteractionManager manager, SpatialInteractionSourceEventArgs args)
{
SpatialCoordinateSystem currentCoordinateSystem = referenceFrame.CoordinateSystem;
SpatialInteractionSourceLocation pos = args.State.Properties.TryGetLocation(currentCoordinateSystem);
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Get the gaze direction relative to the given coordinate system.
Vector3 headPosition = (Vector3)pos.Position;
SpatialPointerPose pose = SpatialPointerPose.TryGetAtTimestamp(currentCoordinateSystem, prediction.Timestamp);
SpatialInteractionSource source = args.State.Source;
Vector3 headDirection = pose.Head.ForwardDirection;
// The hologram is positioned two meters along the user's gaze direction.
float distanceFromUser = 0.1f; // meters
Vector3 gazeAtTwoMeters = headPosition + (distanceFromUser * headDirection);
// This will be used as the translation component of the hologram's
// model transform.
this.position = gazeAtTwoMeters;
}
public void Update(PerceptionTimestamp timeStamp, SpatialCoordinateSystem coordinateSystem)
{
var states = interactionManager.GetDetectedSourcesAtTimestamp(timeStamp);
foreach (SpatialInteractionSourceState state in states)
{
if (state.Source.Handedness == hand)
{
SpatialInteractionSourceLocation location = state.Properties.TryGetLocation(coordinateSystem);
if (location != null)
{
SetSpatialInteractionSourceLocation(location);
}
previousState = currentState;
currentState = state;
internalState = previousState != null ? DeviceState.Valid : DeviceState.Invalid;
}
}
}
