/// <summary>
/// Replace the hand data with the given values.
/// </summary>
/// <returns>True if the hand data has been changed.</returns>
/// <param name="isTrackedNew">True if the hand is currently tracked.</param>
/// <param name="isPinchingNew">True if the hand is in a pinching pose that causes a "Select" action.</param>
/// <param name="generator">Generator function that produces joint positions and rotations. The joint data generator is only used when the hand is tracked.</param>
/// <remarks>The timestamp of the hand data will be the current time, see [DateTime.UtcNow](https://docs.microsoft.com/dotnet/api/system.datetime.utcnow?view=netframework-4.8).</remarks>
public bool Update(bool isTrackedNew, bool isPinchingNew, HandJointDataGenerator generator)
{
bool handDataChanged = false;
if (isTracked != isTrackedNew || isPinching != isPinchingNew)
{
isTracked = isTrackedNew;
isPinching = isPinchingNew;
handDataChanged = true;
}
if (isTracked)
{
generator(Joints);
handDataChanged = true;
}
return(handDataChanged);
}
public bool UpdateWithTimestamp(long timestampNew, bool isTrackedNew, bool isPinchingNew, HandJointDataGenerator generator)
{
bool handDataChanged = false;
if (isTracked != isTrackedNew || isPinching != isPinchingNew)
{
isTracked = isTrackedNew;
isPinching = isPinchingNew;
handDataChanged = true;
}
if (timestamp != timestampNew)
{
timestamp = timestampNew;
if (isTracked)
{
generator(Joints);
handDataChanged = true;
}
}
return(handDataChanged);
}
public bool Update(bool isTrackedNew, bool isPinchingNew, HandJointDataGenerator generator)
{
// TODO: DateTime.UtcNow can be quite imprecise, better use Stopwatch.GetTimestamp
// https://stackoverflow.com/questions/2143140/c-sharp-datetime-now-precision
return(UpdateWithTimestamp(DateTime.UtcNow.Ticks, isTrackedNew, isPinchingNew, generator));
}
