public void SetWaitForStart()
{
// Initial state
state = ResultStateT.WAIT_FOR_START;
// No minimum found yet
minimum = double.PositiveInfinity;
score = minimum;
// Gesture Boundaries
startFrameNo = -1;
endFrameNo = -1;
}
/**
* Called when a gesture is recognized.
*/
public void SetWaitForEnd(ContinuousResult result)
{
boundary = result.endFrameNo;
state = ResultStateT.WAIT_FOR_END;
}
/**
* Update internal FSM based on current score.
*/
public void Update(
double score,
double threshold,
int start_frame_no,
int end_frame_no,
int current_frame_no)
{
// Set up current frame if necessary
if (current_frame_no == -2)
{
current_frame_no = end_frame_no;
}
// Wait for the score to pass below the
// rejection threshold
if (state == ResultStateT.WAIT_FOR_START)
{
// If waiting, make sure the minimum matches
// the actual score.
minimum = score;
if (score < threshold)
{
state = ResultStateT.LOOKING_FOR_MINIMUM;
}
}
// Although the gesture is in the accept zone, we
// may have not reached the best score yet.
if (state == ResultStateT.LOOKING_FOR_MINIMUM)
{
// save data on new minimum
if (score <= minimum)
{
minimum = score;
this.score = minimum;
this.startFrameNo = start_frame_no;
this.endFrameNo = end_frame_no;
}
//
// Timeout
//
int frame_cnt = current_frame_no - this.endFrameNo;
bool timeout = (frame_cnt >= options.latencyFrameCount);
if (timeout == true)
{
state = ResultStateT.TRIGGER;
return;
}
}
// Trigger operation is complete, so advance.
if (state == ResultStateT.TRIGGER)
{
state = ResultStateT.WAIT_FOR_END;
}
// Wait until we leave the accept zone
// to avoid triggering again.
if (state == ResultStateT.WAIT_FOR_END)
{
bool advance = true;
//advance &= start_frame_no > boundary;
advance &= score > rejection_threshold;
if (advance)
{
// this.Reset();
state = ResultStateT.WAIT_FOR_START;
}
}
}
