// TODO: Is it possible to remove the redudant raycasts?
public G2OM_RaycastResult GetRaycastResult(ref G2OM_DeviceData deviceData,
IG2OM_ObjectDistinguisher distinguisher)
{
var raycastResult = new G2OM_RaycastResult();
GameObject go;
var result = FindGameObject(ref deviceData.combined, _layerMask, out go);
if (result)
{
var id = go.GetInstanceID();
var hitACandidate = distinguisher.IsGameObjectGazeFocusable(id, go);
raycastResult.combined = new G2OM_Raycast(hitACandidate, id);
}
result = FindGameObject(ref deviceData.leftEye, _layerMask, out go);
if (result)
{
var id = go.GetInstanceID();
var hitACandidate = distinguisher.IsGameObjectGazeFocusable(id, go);
raycastResult.left = new G2OM_Raycast(hitACandidate, id);
}
result = FindGameObject(ref deviceData.rightEye, _layerMask, out go);
if (result)
{
var id = go.GetInstanceID();
var hitACandidate = distinguisher.IsGameObjectGazeFocusable(id, go);
raycastResult.right = new G2OM_Raycast(hitACandidate, id);
}
return(raycastResult);
}
public void Tick(G2OM_DeviceData deviceData)
{
_deviceData = deviceData;
var now = _deviceData.timestamp;
// Get, add and remove candidates
_objectFinder.GetRelevantGazeObjects(ref _deviceData, _newCandidates, _distinguisher);
AddNewCandidates(now, _internalCandidates, _newCandidates);
RemoveOldCandidates(now, _internalCandidates, MaxHistoryInSeconds, _keysToRemove, _internalCapacity);
// Ensure capacity is enough
if (_internalCandidates.Count > _nativeCandidates.Length)
{
_nativeCandidates = new G2OM_Candidate[_internalCandidates.Count];
_nativeCandidatesResult = new G2OM_CandidateResult[_internalCandidates.Count];
}
// Prepare structs to be sent to G2OM
_colliderDataProvider.GetColliderData(_internalCandidates, _nativeCandidates);
var raycastResult = _objectFinder.GetRaycastResult(ref _deviceData, _distinguisher);
_context.Process(ref _deviceData, ref raycastResult, _internalCandidates.Count, _nativeCandidates, _nativeCandidatesResult); // TODO: What to do if this call fails??
// Process the result from G2OM
UpdateListOfFocusedCandidates(_nativeCandidatesResult, _internalCandidates, _gazeFocusedObjects);
_postTicker.TickComplete(_gazeFocusedObjects);
}
public void GetRelevantGazeObjects(ref G2OM_DeviceData deviceData, Dictionary <int, GameObject> foundObjects,
IG2OM_ObjectDistinguisher distinguisher)
{
var numberOfRaysThisFrame = GetNumberOfRays(deviceData.timestamp - _previousTimestamp);
_previousTimestamp = deviceData.timestamp;
CreateMutatedRays(ref deviceData, numberOfRaysThisFrame, _rays);
FindObjects(_rays, foundObjects, distinguisher, _layerMask);
}
private static void CreateMutatedRays(ref G2OM_DeviceData deviceData, int numberOfRays, IList <RawRay> rays)
{
rays.Clear();
if (deviceData.combined.IsValid)
{
rays.Add(new RawRay(ref deviceData.combined.ray));
}
if (deviceData.leftEye.IsValid)
{
rays.Add(new RawRay(ref deviceData.leftEye.ray));
}
if (deviceData.rightEye.IsValid)
{
rays.Add(new RawRay(ref deviceData.rightEye.ray));
}
if (rays.Count == 0)
{
return; // If we don't have any source rays to mutate, early return
}
var numberOfInitialRays = rays.Count;
var rayIndex = numberOfInitialRays;
var indexOffset = Random.Range(0, Rotations.Length);
while (rayIndex < numberOfRays)
{
for (int i = 0; i < numberOfInitialRays && i + rayIndex < numberOfRays; i++)
{
var sourceRay = rays[i];
var randomRotation = Rotations[(rayIndex + indexOffset) % Rotations.Length];
var mutatedDirection = randomRotation * sourceRay.direction;
rays.Add(new RawRay {
origin = sourceRay.origin, direction = mutatedDirection
});
}
rayIndex += numberOfInitialRays;
}
#if UNITY_EDITOR
for (int i = 0; i < numberOfInitialRays; i++)
{
Debug.DrawRay(rays[i].origin, rays[i].direction * 100, Color.red);
}
for (int i = numberOfInitialRays; i < numberOfRays; i++)
{
Debug.DrawRay(rays[i].origin, rays[i].direction * 100, Color.green);
}
#endif
}
public bool Process(ref G2OM_DeviceData deviceData, ref G2OM_RaycastResult raycastResult, int candidateCount, G2OM_Candidate[] candidates, G2OM_CandidateResult[] candidateResults)
{
var result = Interop.G2OM_Process(_context, ref deviceData, ref raycastResult, (uint)candidateCount, candidates, candidateResults);
if (result == G2OM_Error.Ok)
{
return(true);
}
Debug.LogError("Failed to process G2OM. Error code " + result);
return(false);
}
// TODO: Is it possible to remove the redudant raycasts?
public G2OM_RaycastResult GetRaycastResult(
ref G2OM_DeviceData deviceData,
IG2OM_ObjectDistinguisher distinguisher)
{
var raycastResult = new G2OM_RaycastResult();
GameObject go;
var result = FindGameObject(ref deviceData.gaze_ray_world_space.ray, _layerMask, out go);
if (result)
{
var id = go.GetInstanceID();
var hitACandidate = distinguisher.IsGameObjectGazeFocusable(id, go);
raycastResult.gaze_ray = new G2OM_Raycast
{
candidate_id = (ulong)id,
is_raycast_id_valid = hitACandidate.ToByte()
};
}
return(raycastResult);
}
private static void DrawDebugRays(ref G2OM_DeviceData deviceData, G2OM_GazeRay[] rays, int numberOfRaysThisFrame)
{
if (rays.Length <= 0)
{
return;
}
if (rays[0].is_valid.ToBool() == false)
{
return;
}
Debug.DrawRay(rays[0].ray.origin.Vector(), rays[0].ray.direction.Vector() * 100, Color.red);
for (int i = 1; i < numberOfRaysThisFrame; i++)
{
if (rays[i].is_valid.ToBool() == false)
{
break;
}
Debug.DrawRay(rays[i].ray.origin.Vector(), rays[i].ray.direction.Vector() * 100, Color.green);
}
}
public void GetRelevantGazeObjects(ref G2OM_DeviceData deviceData, Dictionary <int, GameObject> foundObjects, IG2OM_ObjectDistinguisher distinguisher)
{
var result = _context.GetCandidateSearchPattern(ref deviceData, _rays);
if (result != G2OM_Error.Ok)
{
Debug.LogError("GetCandidateSearchPattern failed with error: " + result);
return;
}
var numberOfRaysThisFrame = GetNumberOfRays(deviceData.timestamp - _previousTimestamp);
_previousTimestamp = deviceData.timestamp;
#if UNITY_EDITOR
if (ShouldDrawDebugRays)
{
DrawDebugRays(ref deviceData, _rays, numberOfRaysThisFrame);
}
#endif
FindObjects(_rays, foundObjects, distinguisher, _layerMask, numberOfRaysThisFrame);
}
private static void DrawDebugRays(ref G2OM_DeviceData deviceData, G2OM_Ray[] rays, int numberOfRaysThisFrame)
{
var numberOfInitialRays = 0;
if (deviceData.combined.IsValid)
{
numberOfInitialRays++;
}
for (int i = 0; i < numberOfInitialRays; i++)
{
Debug.DrawRay(rays[i].origin.Vector, rays[i].direction.Vector * 100, Color.red);
}
for (int i = numberOfInitialRays; i < numberOfRaysThisFrame; i++)
{
if (rays[i].direction.Vector.sqrMagnitude == 0)
{
break;
}
Debug.DrawRay(rays[i].origin.Vector, rays[i].direction.Vector * 100, Color.green);
}
}
public static extern G2OM_Error G2OM_GetCandidateSearchPattern(IntPtr context, ref G2OM_DeviceData deviceData, uint numberOfRays, G2OM_GazeRay[] mutatedRays);
public static extern G2OM_Error G2OM_Process(IntPtr context, ref G2OM_DeviceData deviceData, ref G2OM_RaycastResult raycastResult, uint candidatesCount, G2OM_Candidate[] candidates, G2OM_CandidateResult[] candidateResults);
public G2OM_Error GetCandidateSearchPattern(ref G2OM_DeviceData deviceData, G2OM_Ray[] rays)
{
return(Interop.G2OM_GetCandidateSearchPattern(_context, ref _up, ref _right, ref deviceData, (uint)rays.Length, rays));
}
public static extern G2OM_Error G2OM_GetCandidateSearchPattern(IntPtr context, ref G2OM_Vector3 worldSpaceUpDirection, ref G2OM_Vector3 worldSpaceRightDirection, ref G2OM_DeviceData deviceData, uint numberOfRays, G2OM_Ray[] mutatedRays);