private bool checkCircleGesture(List<KinectDataPoint> queue, InteractionCircle direction)
{
for (int i = 0; i < queue.Count; ++i)
{
if (checkCircleGesture(queue, i, direction))
{
return true;
}
}
return false;
}
private bool checkCircleGesture(List<KinectDataPoint> queue, int stepSize, InteractionCircle direction)
{
int minPoints = stepSize * 4 + 1;
for (int i = 0; i < queue.Count - minPoints; ++i)
{
KinectDataPoint p1 = queue.ElementAt(i);
KinectDataPoint p4 = queue.ElementAt(i + (3 * stepSize));
if (p1.TimeStamp.AddMilliseconds(maxCircleTime) < p4.TimeStamp)
{
break;
}
KinectDataPoint p2 = queue.ElementAt(i + stepSize);
KinectDataPoint p3 = queue.ElementAt(i + (2 * stepSize));
double diag1 = p1.CalcScreenDistance(p3);
double diag2 = p2.CalcScreenDistance(p4);
double dist1 = p1.CalcScreenDistance(p2);
double dist2 = p2.CalcScreenDistance(p3);
double dist3 = p3.CalcScreenDistance(p4);
double dist4 = p4.CalcScreenDistance(p1);
if (diag1 > IConsts.GCircleDiameter && diag2 > IConsts.GCircleDiameter)
{
if (Math.Abs(dist1 - dist2) < IConsts.GCircleGitterXY && Math.Abs(dist2 - dist3) < IConsts.GCircleGitterXY &&
Math.Abs(dist3 - dist4) < IConsts.GCircleGitterXY && Math.Abs(dist4 - dist1) < IConsts.GCircleGitterXY)
{
// TODO: improve circle direction detection
if (getDirection(new KinectDataPoint[] { p1, p2, p3, p4 }) == direction)
{
return true;
}
}
}
}
return false;
}
