public class AccelerationClassifier
extends StrokeClassifier
A classifier which looks at the speed and distance between successive points of a Stroke.
It looks at two consecutive speeds between two points and calculates the ratio between them.
The final result is the maximum of these values. It does the same for distances. If some speed
or distance is equal to zero then the ratio between this and the next part is not calculated. To
the duration of each part there is added one nanosecond so that it is always possible to
calculate the speed of a part.