Automatic panning

[Matt Duffin]

Hi all,

I’m trying to customise the WPF PannableElements sample such that content can be scrolled by gaze alone – without pressing the EyeX button.

I tried changing the PannableParams as follows:

public void AssignBehavior(Interactor interactor)
{
    var parameters = new PannableParams
    {
        IsHandsFreeEnabled = EyeXBoolean.***True***,
        PanDirectionsAvailable = PanDirectionsAvailable,
        Profile = Profile
    };
    interactor.CreatePannableBehavior(ref parameters);
}

But this just resulted in assertions:

Snapshot validation failed: Unspecified error.
   at EyeXFramework.EyeXHost.OnSnapshotCommitted(AsyncData asyncData) in f:\Downloads\TobiiEyeXSdk-DotNet-1.4.451\source\EyeXFramework\EyeXHost.cs:line 451
   at Tobii.EyeX.Client.Snapshot.<>c__DisplayClass7.<>c__DisplayClass9.<CommitAsync>b__6()
   at Tobii.EyeX.Client.Context.SafeInvokeClientCode(Action clientCode)
   at Tobii.EyeX.Client.Snapshot.<>c__DisplayClass7.<CommitAsync>b__5(IntPtr hAsyncData, IntPtr userParam)

Is there any easy way to accomplish automatic panning?

Thanks,
Matt

[Jenny [Tobii]]

Hi Matt,

Hands-free panning is something we are planning to support in the future, but do not support right now. An early implementation was available for a while for evaluation purposes, but currently causes a snapshot validation error from the EyeX Engine when you try to enable it. This is the reason why it is hard-coded to EyeXBoolean.False in the EyeXFramework. There is currently no time-estimate or target EyeX Engine version for the hands-free panning feature.

[Author]

Posts