public float DistanceTo(DGInstanceSample otherInstance)
{
float dgDistance = 0;
//distance += (this as SGClass).DistanceTo(otherInstance);
// Need to figure out how to weight these DG features appropriately.
int dgFeatureCount = 0;
if (otherInstance.LeftHand != null)
{
dgDistance += MeanLeftPalmVelocity.DistanceTo(otherInstance.LeftPalmVelocity) / StdDevLeftPalmVelocity;
dgFeatureCount++;
}
if (otherInstance.RightHand != null)
{
dgDistance += MeanRightPalmVelocity.DistanceTo(otherInstance.RightPalmVelocity) / StdDevRightPalmVelocity;
dgFeatureCount++;
}
dgDistance /= (float)dgFeatureCount;
float sgDistance = base.DistanceTo(otherInstance as SGInstance);
// The two weights must add up to 1.0f
float sgWeight = 0.5f;
float dgWeight = 0.5f;
float result = (dgDistance * dgWeight) + (sgDistance * sgWeight);
return(result);
}
//TODO: Check if this works (with all the casting and stuff).
public DGInstanceSample Lerp(DGInstanceSample otherInstance, float amount)
{
SGInstance sgLerp = base.Lerp(otherInstance, amount);
var lerpedSample = new DGInstanceSample(sgLerp);
if (LeftHand != null)
{
lerpedSample.LeftPalmVelocity = LeftPalmVelocity.Lerp(otherInstance.LeftPalmVelocity, amount);
}
if (RightHand != null)
{
lerpedSample.RightPalmVelocity = RightPalmVelocity.Lerp(otherInstance.RightPalmVelocity, amount);
}
return(lerpedSample);
}
public void ProcessFrame(Frame frame)
{
if (_lastFrame == null)
{
_lastFrame = frame;
return;
}
bool handsStill = handsAreStill(frame);
if (frame.Hands.Count == 0)
{
State = DGRecorderState.WaitingForHands;
}
switch (State)
{
case DGRecorderState.WaitingForHands:
if (frame.Hands.Count > 0)
{
_stillGesture = new SGInstance(frame);
State = DGRecorderState.WaitingToStart;
}
break;
case DGRecorderState.WaitingToStart:
if (handsStill)
{
_startOfGesture = new DGInstanceSample(frame);
_gestureSamples = new List <DGInstanceSample>();
_gestureSamples.Add(_startOfGesture);
State = DGRecorderState.InStartPosition;
}
break;
case DGRecorderState.InStartPosition:
if (!handsStill)
{
State = DGRecorderState.RecordingGesture;
}
break;
case DGRecorderState.RecordingGesture:
if (handsStill)
{
// Trim the extra samples in back (from holding hand still for X seconds)
int stillFrames = (int)(_frameRate * _stillSeconds);
_gestureSamples.RemoveRange(_gestureSamples.Count - stillFrames, stillFrames);
MostRecentInstance = new DGInstance(_gestureSamples);
if (_inRecordMode)
{
Instances.Add(MostRecentInstance);
}
State = DGRecorderState.RecordingJustFinished; // Put this first so "InEndPosition" is printed while we process the frames
}
else
{
_gestureSamples.Add(new DGInstanceSample(frame));
}
break;
case DGRecorderState.RecordingJustFinished:
State = DGRecorderState.InEndPosition;
break;
case DGRecorderState.InEndPosition:
if (!handsStill)
{
State = DGRecorderState.WaitingToStart;
}
break;
}
}
