@interface PXVelocityNumberFilter : PXNumberFilter {
double _minimumSampleInterval;
double _previousVelocityWeight;
double _lastValue;
double _lastTime;
double _velocity;
double _previousVelocity;
double _filteredVelocity;
}
+ (id)gestureVelocityFilter;
- (double)updatedOutput;
- (id)initWithInput:(double)a0;
@end