/// <summary>
/// Median of the distance between two points
/// Median over 3
/// </summary>
/// <param name="t1">Joint 1</param>
/// <param name="t2">Joint 2</param>
/// <returns>Distance in Meters</returns>
public double GetDistanceMedian(JointType t1, JointType t2)
{
if (!HasSkeleton(2))
{
return(GetDistance(t1, t2));
}
return(SkeletonMath.Median(GetDistance(t1, t2), GetDistance(t1, t2, 1), GetDistance(t1, t2, 2)));
}
/// <summary>
/// Get a joints absolute velocity. If theres not enough skeleton information,
/// precision is decreased automatically.</summary>
/// <param name="type">
/// The JointType to get velocity from.</param>
/// <returns>
/// Returns the absolute velocity in meters</returns>
public double GetAbsoluteVelocity(JointType type)
{
if (!HasSkeleton(1))
{
return(0);
}
if (!HasSkeleton(3))
{
return(SimpleAbsoluteVelocity(type, 0, 1));
}
return(SkeletonMath.Median(SimpleAbsoluteVelocity(type, 0, 1), SimpleAbsoluteVelocity(type, 1, 2), SimpleAbsoluteVelocity(type, 2, 3)));
}
/// <summary>
/// Calculates the relative velocity of a joint referencing to a second one.</summary>
/// <param name="steady">
/// The referenctial JointType.</param>
/// <param name="moving">
/// The moving JointType of interest</param>
/// <returns>
/// Returns the relative velocity in meters</returns>
public double GetRelativeVelocity(JointType steady, JointType moving)
{
if (!HasSkeleton(1))
{
return(0);
}
SkeletonPoint d0 = SubstractedPointsAt(steady, moving, 0);
SkeletonPoint d1 = SubstractedPointsAt(steady, moving, 1);
if (!HasSkeleton(3))
{
return(SkeletonMath.DistanceBetweenPoints(d0, d1) * 1000.0 / person.MillisBetweenFrames(1, 0));
}
SkeletonPoint d2 = SubstractedPointsAt(steady, moving, 2);
SkeletonPoint d3 = SubstractedPointsAt(steady, moving, 3);
return(SkeletonMath.Median(
SkeletonMath.DistanceBetweenPoints(d0, d1) * 1000.0 / person.MillisBetweenFrames(1, 0),
SkeletonMath.DistanceBetweenPoints(d1, d2) * 1000.0 / person.MillisBetweenFrames(2, 1),
SkeletonMath.DistanceBetweenPoints(d2, d3) * 1000.0 / person.MillisBetweenFrames(3, 2)
));
}