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bANGERnomics's avatar
bANGERnomics
Honored Guest
6 years ago

OVRCameraRig use per eye cameras changes scale

I'm working on a 3D image/video solution so I'm using the 'per eye camera' option in the OVR Camera Rig in Unity.  I noticed that if I toggle this setting on and off, the scale of the world is radical...
OVR
unity vr
phileday's avatar
phileday
Member
5 years ago
Update:

So I've found a fix, in OVRCameraRig.cs I changed 

if (!hmdPresent || monoscopic)
{
leftEyeAnchor.localPosition = centerEyeAnchor.localPosition;
rightEyeAnchor.localPosition = centerEyeAnchor.localPosition;
leftEyeAnchor.localRotation = centerEyeAnchor.localRotation;
rightEyeAnchor.localRotation = centerEyeAnchor.localRotation;
}
else
{
                leftEyeAnchor.localPosition = centerEyeAnchor.localPosition;
                rightEyeAnchor.localPosition = centerEyeAnchor.localPosition;
                leftEyeAnchor.localRotation = centerEyeAnchor.localRotation;
                rightEyeAnchor.localRotation = centerEyeAnchor.localRotation;

Vector3 leftEyePosition = Vector3.zero;
Vector3 rightEyePosition = Vector3.zero;
Quaternion leftEyeRotation = Quaternion.identity;
Quaternion rightEyeRotation = Quaternion.identity;

if (OVRNodeStateProperties.GetNodeStatePropertyVector3(Node.LeftEye, NodeStatePropertyType.Position, OVRPlugin.Node.EyeLeft, OVRPlugin.Step.Render, out leftEyePosition))
leftEyeAnchor.localPosition = leftEyePosition;
if (OVRNodeStateProperties.GetNodeStatePropertyVector3(Node.RightEye, NodeStatePropertyType.Position, OVRPlugin.Node.EyeRight, OVRPlugin.Step.Render, out rightEyePosition))
rightEyeAnchor.localPosition = rightEyePosition;
if (OVRNodeStateProperties.GetNodeStatePropertyQuaternion(Node.LeftEye, NodeStatePropertyType.Orientation, OVRPlugin.Node.EyeLeft, OVRPlugin.Step.Render, out leftEyeRotation))
leftEyeAnchor.localRotation = leftEyeRotation;
if (OVRNodeStateProperties.GetNodeStatePropertyQuaternion(Node.RightEye, NodeStatePropertyType.Orientation, OVRPlugin.Node.EyeRight, OVRPlugin.Step.Render, out rightEyeRotation))
rightEyeAnchor.localRotation = rightEyeRotation;
}
}

to this:

if (!hmdPresent || monoscopic)
{
leftEyeAnchor.localPosition = centerEyeAnchor.localPosition;
rightEyeAnchor.localPosition = centerEyeAnchor.localPosition;
leftEyeAnchor.localRotation = centerEyeAnchor.localRotation;
rightEyeAnchor.localRotation = centerEyeAnchor.localRotation;
}
else
{
                leftEyeAnchor.localPosition = centerEyeAnchor.localPosition;
                rightEyeAnchor.localPosition = centerEyeAnchor.localPosition;
                leftEyeAnchor.localRotation = centerEyeAnchor.localRotation;
                rightEyeAnchor.localRotation = centerEyeAnchor.localRotation;

/*
Vector3 leftEyePosition = Vector3.zero;
Vector3 rightEyePosition = Vector3.zero;
Quaternion leftEyeRotation = Quaternion.identity;
Quaternion rightEyeRotation = Quaternion.identity;

if (OVRNodeStateProperties.GetNodeStatePropertyVector3(Node.LeftEye, NodeStatePropertyType.Position, OVRPlugin.Node.EyeLeft, OVRPlugin.Step.Render, out leftEyePosition))
leftEyeAnchor.localPosition = leftEyePosition;
if (OVRNodeStateProperties.GetNodeStatePropertyVector3(Node.RightEye, NodeStatePropertyType.Position, OVRPlugin.Node.EyeRight, OVRPlugin.Step.Render, out rightEyePosition))
rightEyeAnchor.localPosition = rightEyePosition;
if (OVRNodeStateProperties.GetNodeStatePropertyQuaternion(Node.LeftEye, NodeStatePropertyType.Orientation, OVRPlugin.Node.EyeLeft, OVRPlugin.Step.Render, out leftEyeRotation))
leftEyeAnchor.localRotation = leftEyeRotation;
if (OVRNodeStateProperties.GetNodeStatePropertyQuaternion(Node.RightEye, NodeStatePropertyType.Orientation, OVRPlugin.Node.EyeRight, OVRPlugin.Step.Render, out rightEyeRotation))
rightEyeAnchor.localRotation = rightEyeRotation;
*/
}
}

basically making the left and right camera do this

leftEyeAnchor.localPosition = centerEyeAnchor.localPosition;
rightEyeAnchor.localPosition = centerEyeAnchor.localPosition;
leftEyeAnchor.localRotation = centerEyeAnchor.localRotation;
rightEyeAnchor.localRotation = centerEyeAnchor.localRotation;

seems to work :)
ruud3DV's avatar
ruud3DV
Start Partner
4 years ago

Thanks a lot for sharing this!!

Ran into the same issue with XR on Oculus Quest (Unity 2020.3.26f1) and setting the TrackedPoseDriver for the LeftEyeAnchor and RightEyeAnchor to use Input Actions 'centerEyePosition' and 'centerEyeRotation' solved this.