private void Reset()
{
this.callBack = null;
this.headPositionLastFrame = null;
this.upDownAmount = 0f;
this.leftRightAmount = 0f;
}
/// <summary>
/// Register a HeadNodCallBack.
/// Only one allowed at a time.
/// Does not register, and returns false, if
/// there is an existing callback.
/// </summary>
/// <param name="callBack"></param>
public bool TryRegisterCallBack(IHeadNodCallback callBack)
{
if (this.callBack == null)
{
this.callBack = callBack;
return(true);
}
return(false);
}
