public static double Acceleration(
MeasureInformation CurrentMI,
MeasureInformation PrevMI,
SpatialTemporalInformation CurrentTI,
SpatialTemporalInformation PrevTI) {
// Acceleration = Velocity change / Time
double velocityChange = CurrentMI.Speed - PrevMI.Speed;
long differenceInSeconds = (CurrentTI.MPoint.getTime() - PrevTI.MPoint.getTime()) / 1000;
if (differenceInSeconds == 0) {
return 0;
} else {
return velocityChange / differenceInSeconds;
}
}
public static double Jerk(
MeasureInformation CurrentMi,
MeasureInformation PrevMI,
SpatialTemporalInformation CurrentTI,
SpatialTemporalInformation PrevTI) {
// Jerk = Acceleration change / Time
double accelerationChange = CurrentMi.Acceleration - PrevMI.Acceleration;
long differenceInSeconds = (CurrentTI.MPoint.getTime() - PrevTI.MPoint.getTime()) / 1000;
if (differenceInSeconds == 0) {
return 0;
} else {
return accelerationChange / differenceInSeconds;
}
}
public static int SecondsToLag(
SpatialTemporalInformation CurrentTI, SpatialTemporalInformation PrevTI) {
return (int) (CurrentTI.MPoint.getTime() - PrevTI.MPoint.getTime()) / 1000;
}