/// Returns the interpolated scene pose based on the app primary and secondary ODS tranforms.
/// Progress the interpolation parameter which is expected to be in the range [0, 1].
/// Interpolation is done via TrTransform, which gives correct rotation and scale interpoalation.
public static TrTransform GetScenePose(float progress)
{
// Interpolate in worldspace
TrTransform cameraStart = App.Instance.OdsScenePrimary.inverse;
TrTransform cameraEnd = App.Instance.OdsSceneSecondary.inverse;
TrTransform cameraCur = TrTransform.Lerp(cameraStart * App.Instance.OdsHeadPrimary,
cameraEnd * App.Instance.OdsHeadSecondary,
progress);
return(cameraCur.inverse);
}
public void Deserialize()
{
m_Scene.Read(m_xformName, m_UsdCamera);
var basisMat = Matrix4x4.identity;
if (m_UnitsInMeters)
{
basisMat[0, 0] *= App.METERS_TO_UNITS;
basisMat[1, 1] *= App.METERS_TO_UNITS;
basisMat[2, 2] *= -1 * App.METERS_TO_UNITS;
}
m_UsdCamera.transform = ExportUtils.ChangeBasis(m_UsdCamera.transform, basisMat, basisMat.inverse);
TrTransform xf_WS = UsdXformToWorldSpaceXform(m_UsdCamera);
TrTransform old_WS = TrTransform.FromTransform(transform);
TrTransform new_WS = TrTransform.Lerp(old_WS, xf_WS, 1 - m_Smoothing);
new_WS.scale = m_UsdCameraInfo.eyeScale != 0 ? m_UsdCameraInfo.eyeScale : 1;
new_WS.ToTransform(transform);
// Pre-M23.3, .usd files won't have fov defined, so this value will be negative.
if (m_UsdCamera.fov > 0)
{
// A bit brute force, but we're running through all cameras in the scene to make
// sure the preview shows the modified fov.
for (int i = 0; i < m_PlaybackCameras.Length; ++i)
{
if (m_PlaybackCameras[i].gameObject.activeInHierarchy &&
m_PlaybackCameras[i].isActiveAndEnabled)
{
m_PlaybackCameras[i].fieldOfView = m_UsdCamera.fov;
}
}
}
}