// Update the segment's position and compute a smoothed velocity for the circle or the
// endpoints of the segment based on the time it took it to move from the last position
// to the current one. The velocity is in pixels per second.
public void UpdateSegment(Segment s)
{
LastSegment = Segment;
Segment = s;
DateTime cur = DateTime.Now;
double fMs = cur.Subtract(TimeLastUpdated).TotalMilliseconds;
if (fMs < 10.0)
{
fMs = 10.0;
}
double fps = 1000.0 / fMs;
TimeLastUpdated = cur;
if (Segment.IsCircle())
{
XVelocity = (XVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.X1 - LastSegment.X1) * fps);
YVelocity = (YVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.Y1 - LastSegment.Y1) * fps);
}
else
{
XVelocity = (XVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.X1 - LastSegment.X1) * fps);
YVelocity = (YVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.Y1 - LastSegment.Y1) * fps);
XVelocity2 = (XVelocity2 * Smoothing) + ((1.0 - Smoothing) * (Segment.X2 - LastSegment.X2) * fps);
YVelocity2 = (YVelocity2 * Smoothing) + ((1.0 - Smoothing) * (Segment.Y2 - LastSegment.Y2) * fps);
}
}
// Using the velocity calculated above, estimate where the segment is right now.
public Segment GetEstimatedSegment(DateTime cur)
{
Segment estimate = Segment;
double fMs = cur.Subtract(TimeLastUpdated).TotalMilliseconds;
estimate.X1 += fMs * XVelocity / 1000.0;
estimate.Y1 += fMs * YVelocity / 1000.0;
if (Segment.IsCircle())
{
estimate.X2 = estimate.X1;
estimate.Y2 = estimate.Y1;
}
else
{
estimate.X2 += fMs * XVelocity2 / 1000.0;
estimate.Y2 += fMs * YVelocity2 / 1000.0;
}
return(estimate);
}
// Update the segment's position and compute a smoothed velocity for the circle or the
// endpoints of the segment based on the time it took it to move from the last position
// to the current one. The velocity is in pixels per second.
public void UpdateSegment(Segment s)
{
LastSegment = Segment;
Segment = s;
// TODO check here
DateTime cur = DateTime.Now;
double fMs = cur.Subtract(TimeLastUpdated).TotalMilliseconds;
if (fMs < 10.0)
{
fMs = 10.0;
}
double fps = 1000.0 / fMs;
TimeLastUpdated = cur;
if (Segment.IsCircle())
{
XVelocity = (XVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.X1 - LastSegment.X1) * fps);
YVelocity = (YVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.Y1 - LastSegment.Y1) * fps);
}
else
{
XVelocity = (XVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.X1 - LastSegment.X1) * fps);
YVelocity = (YVelocity * Smoothing) + ((1.0 - Smoothing) * (Segment.Y1 - LastSegment.Y1) * fps);
XVelocity2 = (XVelocity2 * Smoothing) + ((1.0 - Smoothing) * (Segment.X2 - LastSegment.X2) * fps);
YVelocity2 = (YVelocity2 * Smoothing) + ((1.0 - Smoothing) * (Segment.Y2 - LastSegment.Y2) * fps);
}
}