Hello,
I’m currently working with Steam VR Plugin for Unity and i’m converting my whole project for the fantastic HTC Vive Pre and forward.
UNFORTUNATELY i didn’t figured out the equivalent to :
" UnityEngine.VR.InputTracking.Recenter(); "
I tried SteamVR.instance.hmd.ResetSeatedZeroPose(); without any success…
Seems on the web i’m not alone but didn’t found any answer.
Does anyone can help ?
This problem may be Unity5.3.3 Bug
public KeyCode reOrient;
void Update()
{
if (Input.GetKeyDown(reOrient) == true)
{
Valve.VR.OpenVR.System.ResetSeatedZeroPose();
//transform.parent.localEulerAngles -= transform.localEulerAngles + transform.parent.localEulerAngles;
}
//transform.parent.localPosition = -transform.localPosition;
}
Valves reset seems like the way to go, but it does nothing I can detect. Use the commented lines and remove/comment the ResetSeatedZeroPose line, make sure the camera (origin) is a child of something that looks at your centre. And dont forget to set a reOrient key in the inspector (This code can create strange offsets when reorienting)
alert @VirtualisDev and others…
Actual miracle solution is here:
OpenVR - How to reset camera properly? - Unity Engine - Unity Discussions
thanks to TODD-WASSON
I spent a lot of time looking for a answer on this. Tried all of the options on this thread and the miracle one without success. Looked like several of the SteamVR/Valve and native solutions stopped working after a recent update. Eventually wrote this script which took care of it to my liking.
This script will allow a reset of the SteamVR camera rig to align with a transform representing the desired head position in the scene. Attach to any GameObject in the scene. Useful for seated experiences like cockpits.
using UnityEngine;
public class ResetSeatedPosition : MonoBehaviour {
[Tooltip("Desired head position of player when seated")]
public Transform desiredHeadPosition;
private Transform steamCamera;
private Transform steamController;
// Update is called once per frame
void Update () {
if (Input.GetKeyDown(KeyCode.Space))
{
if (desiredHeadPosition != null)
{
ResetSeatedPos(desiredHeadPosition);
}
else
{
Debug.Log("Target Transform required. Assign in inspector.");
}
}
}
private void ResetSeatedPos(Transform desiredHeadPos){
//find VR Camera and CameraRig transforms in scene
steamCamera = FindObjectOfType<SteamVR_Camera>().gameObject.transform;
steamController = FindObjectOfType<SteamVR_ControllerManager>().transform;
if ((steamCamera != null) && (steamController != null))
{
//{first rotation}
//get current head heading in scene
//(y-only, to avoid tilting the floor)
float offsetAngle = steamCamera.rotation.eulerAngles.y;
//now rotate CameraRig in opposite direction to compensate
steamController.Rotate(0f, -offsetAngle, 0f);
//{now position}
//calculate postional offset between CameraRig and Camera
Vector3 offsetPos = steamCamera.position - steamController.position;
//reposition CameraRig to desired position minus offset
steamController.position = (desiredHeadPos.position - offsetPos);
Debug.Log("Seat recentered!");
}
else
{
Debug.Log("Error: SteamVR objects not found!");
}
}
}
Turned out to be simpler than I expected. Hope it can save someone else the time!
Cheers,
Gerry
PS: Running Unity 2017.2
The solution @gstarch suggested is the way to go. It works both for Room Scale & Seated Experiences.
Some things to remember though:
An important change is that the SteamVR_ControllerManager-script isn’t attached to the [CameraRig]-prefab coming with the SteamVR-plugin anymore (in SteamVR version 1.2.3 and up).
This also means that the variable steamController is supposed to be set to the [CameraRig]-prefab coming with the SteamVR-plugin.
How Unity.XR works:
The function UnityEngine.XR.InputTracking.Recenter(); ONLY works for Seated/Standing Experiences, ie. it won’t do anything if you have set up a Room Scale-experience.
Here’s our modified version of @gstarch 's solution. Works with Unity 2018.3.0b11 & SteamVR Version 1.2.3
Hope this helps someone!
using UnityEngine;
public class PlayAreaController : MonoBehaviour
{
[Tooltip("Desired head position of player when seated")]
public Transform desiredHeadPosition;
//Assign these variables in the inspector, or find them some other way (eg. in Start() )
public Transform steamCamera;
public Transform cameraRig;
private void Update()
{
if (Input.GetKeyDown(KeyCode.Space))
{
if (desiredHeadPosition != null)
{
ResetSeatedPos(desiredHeadPosition);
}
else
{
Debug.LogError("Target Transform required. Assign in inspector.", gameObject);
}
}
}
private void ResetSeatedPos(Transform desiredHeadPos)
{
if ((steamCamera != null) && (cameraRig != null))
{
//ROTATION
// Get current head heading in scene (y-only, to avoid tilting the floor)
float offsetAngle = steamCamera.rotation.eulerAngles.y;
// Now rotate CameraRig in opposite direction to compensate
cameraRig.Rotate(0f, -offsetAngle, 0f);
//POSITION
// Calculate postional offset between CameraRig and Camera
Vector3 offsetPos = steamCamera.position - cameraRig.position;
// Reposition CameraRig to desired position minus offset
cameraRig.position = (desiredHeadPos.position - offsetPos);
Debug.Log("Seat recentered!");
}
else
{
Debug.Log("Error: SteamVR objects not found!");
}
}
}
This is just what I needed. Thanks.
It worked lika a charm!
I’m not sure what you are setting as the “Camera Rig”
I can make an object to be the “desiredHeadPosition” and I see the Players “VRCamera” to set as the “steamCamera”
but whats the rig? Is this something that has been removed in SteamVR 2.x (SDK 1.7.15) ?
To reset orientation I use the following:
public void ResetTracker()
{
StartCoroutine( Boresight() );
}
private IEnumerator Boresight()
{
activeCameraRig.transform.rotation = Quaternion.identity;
yield return null;
InputTracking.Recenter();
yield return null;
List<XRNodeState> states = new List<XRNodeState>();
InputTracking.GetNodeStates( states );
var head = states.Find( s => s.nodeType == XRNode.Head );
if( head.TryGetRotation( out Quaternion orientation ) )
activeCameraRig.transform.rotation = Quaternion.Inverse( orientation );
}
activeCameraRig is the top level transform on your VR rig.
private void Start()
{
switch( XRSettings.loadedDeviceName )
{
case "Oculus":
activeCameraRig = Instantiate( OculusCameraRig );
break;
case "OpenVR":
activeCameraRig = Instantiate( ViveCameraRig );
break;
default:
break;
}
onCameraRigActive.Invoke( activeCameraRig );
}
Thank you. That image helped clarify things as did the code. Unfortunately when I load from one scene to another the player is still facing the wrong direction in the new scene.
Edit: Silly me. I Just needed to turn the player prefab around.
P.P.S Edit … Turning the player prefab only works for going to the scene if I return to the previous scene The player will now be facing the wrong way in that scene. 
Just in case someone is looking for this in 2020:
Valve.VR.OpenVR.Chaperone.ResetZeroPose(ETrackingUniverseOrigin.TrackingUniverseSeated);
Introduced by this update:
Hi fgheorghe.
Thank you for posting that 2020 version.
I have given it a go but it resets the Y value as well and puts the floor up to eye level. I have to close and restart SteamVR every time to put the floor back at my feet again.
Would you have any experience on what to do to keep the Y setting?
Cheers,
Lins
Hi Lins, I am wondering if the Y setting changes due to player height settings in SteamVR, outside unity, or depending on your setup, if the camera needs to be a made a child of an empty object set at a desired height - this way if Y is reset to 0, and the camera’s parent is set to 1, then when the position gets reset it will be above the floor at Y 1. Hope this helps!
I think it was a mismatch of the SteamVR_Settings saying tracking space origin seated. When I set that to standing and then in the code set
ETrackingUniverseOrigin.TrackingUniverseSeated
to
ETrackingUniverseOrigin.TrackingUniverseStanding
then it keeps the floor at my feet. Even if I have set my room guardian to stationary or free draw etc. It always sets up as standing for SteamVR.
Just in case someone is looking for this in 2024 (me), this line faithfully emulates exactly what the SteamVR recenter button does.
UnityEngine.XR.InputTracking.Recenter();