From aeb63daed2c62235552be972da4af5b90c885d71 Mon Sep 17 00:00:00 2001
From: "valentin.dasbach" <valentin.dasbach@rwth-aachen.de>
Date: Fri, 8 Mar 2024 15:24:37 +0100
Subject: [PATCH] Corrections for gaze tracking with vive pro eye
---
.../Private/GazeTracking/SFGazeTracker.cpp | 27 ++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp b/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp
index d74b75a..dcdae81 100644
--- a/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp
+++ b/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp
@@ -5,6 +5,7 @@
#include "GazeTracking/SFGazeTarget.h"
#include "GazeTracking/SFGazeTargetActor.h"
#include "Help/SFUtils.h"
+#include "Logging/SFLoggingUtils.h"
#ifdef WITH_SRANIPAL
#include "SRanipalEye_FunctionLibrary.h"
@@ -168,10 +169,34 @@ FGazeRay USFGazeTracker::GetLocalGazeDirection()
FGazeRay USFGazeTracker::GetWorldGazeDirection()
{
+
if (GazeTrackingBackend == EGazeTrackingBackend::OpenXREyeTracker) {
//this is already in world coordinates
- return GetGazeRayFromEyeTrackerData();
+ FGazeRay Gaze = GetGazeRayFromEyeTrackerData();
+
+
+ // Corrections when using HTC Vive Pro Eye
+ UWorld* World = USFGameInstance::Get()->GetWorld();
+ if (!World->GetFirstPlayerController()) {
+ return FGazeRay();
+ }
+ const APlayerCameraManager* CamManager = World->GetFirstPlayerController()->
+ PlayerCameraManager;
+ const FVector CameraLocation = CamManager->GetCameraLocation();
+ FRotator CameraRotation = CamManager->GetCameraRotation();
+
+ Gaze.Origin = CameraLocation;
+
+ FRotator AddRot = FRotator(0.0f, 180.0f, 0.0f);
+ Gaze.Direction = AddRot.RotateVector(Gaze.Direction);
+ Gaze.Direction = World->GetFirstPlayerController()->GetControlRotation().UnrotateVector(Gaze.Direction);
+ Gaze.Direction = CameraRotation.RotateVector(Gaze.Direction);
+
+
+
+ return Gaze;
}
+
//otherwise take local and transform it into world space
FGazeRay LocalGazeRay = GetLocalGazeDirection();
--
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