/// <summary>
/// Begin with the selection and movement of the focused target.
/// </summary>
public void DragAndDrop_Start()
{
if ((EyeTrackingProvider?.GazeTarget == gameObject) && (!objIsGrabbed))
{
if (AudioFeedbackPlayer.Instance != null)
{
AudioFeedbackPlayer.Instance.PlaySound(audio_OnDragStart);
}
objIsGrabbed = true;
EyeTrackingDemoUtils.GameObject_ChangeTransparency(gameObject, transparency_inTransition, ref originalTransparency);
initialHandPos = handPos_absolute;
initalGazeDir = new Vector3(EyeTrackingProvider.GazeDirection.x, EyeTrackingProvider.GazeDirection.y, EyeTrackingProvider.GazeDirection.z);
Rigidbody rbody = GetComponent <Rigidbody>();
if (rbody != null)
{
originalUseGravity = rbody.useGravity;
originalDrag = rbody.drag;
rbody.useGravity = false;
rbody.drag = float.PositiveInfinity;
}
OnDragStart.Invoke();
}
}
/// <summary>
/// Turn on the preview of the to-be-placed target.
/// </summary>
private void ActivatePreview()
{
if (previewGameObject == null)
{
previewGameObject = Instantiate(gameObject);
previewGameObject.GetComponent <Collider>().enabled = false;
EyeTrackingDemoUtils.GameObject_ChangeTransparency(previewGameObject, transparency_preview);
placePreviewAtHitPoint = false;
}
previewGameObject.SetActive(true);
}
/// <summary>
/// Finalize placing the currently selected target.
/// </summary>
public void DragAndDrop_Finish()
{
if (objIsGrabbed)
{
if (AudioFeedbackPlayer.Instance != null)
{
AudioFeedbackPlayer.Instance.PlaySound(audio_OnDragStop);
}
if (onlyEyeWarpOnRelease)
{
manualTargetManip = true;
if (plausibleLocation.HasValue)
{
MoveTargetTo(plausibleLocation.Value);
}
}
objIsGrabbed = false;
DeactivatePreview();
EyeTrackingDemoUtils.GameObject_ChangeTransparency(gameObject, originalTransparency);
Rigidbody rbody = GetComponent <Rigidbody>();
if (rbody != null)
{
rbody.useGravity = originalUseGravity;
rbody.drag = originalDrag;
}
if (useAsSlider)
{
OnDrop_SnapToClosestDecimal();
}
OnDrop.Invoke();
}
}
