/**
* This method determines if an observation record is within a certain radius,
* _terminalSearchRadius argument, of a stop at the start or end of a block. <br>
* Note: all trips' stops within the radius are checked.
*
* @param record
* @return whether the observation is within the search radius
*/
public boolean isAtPotentialBlockTerminal(NycRawLocationRecord record) {
final CoordinatePoint loc = new CoordinatePoint(record.getLatitude(), record.getLongitude());
final CoordinateBounds bounds = SphericalGeometryLibrary.bounds(loc, _terminalSearchRadius);
final List<BlockConfigurationEntry> blocks = new ArrayList<BlockConfigurationEntry>();
final List<StopEntry> stops = _transitGraphDao.getStopsByLocation(bounds);
for (final StopEntry stop : stops) {
final List<BlockStopTimeIndex> stopTimeIndices =
_blockIndexService.getStopTimeIndicesForStop(stop);
for (final BlockStopTimeIndex stopTimeIndex : stopTimeIndices) {
blocks.addAll(stopTimeIndex.getBlockConfigs());
}
}
for (final BlockConfigurationEntry block : blocks) {
final StopEntry firstStop = block.getStopTimes().get(0).getStopTime().getStop();
final double firstStopDist = TurboButton.distance(loc, firstStop.getStopLocation());
final int lastStopIdx = block.getStopTimes().size() - 1;
final StopEntry lastStop = block.getStopTimes().get(lastStopIdx).getStopTime().getStop();
final double lastStopDist = TurboButton.distance(loc, lastStop.getStopLocation());
if (firstStopDist <= _terminalSearchRadius || lastStopDist <= _terminalSearchRadius) {
return true;
}
}
return false;
}
public static boolean isAtPotentialLayoverSpot(
BlockState blockState, Observation obs, boolean optimistic) {
/**
* If there is no block assigned to this vehicle state, then we allow a layover spot the
* terminals of all blocks.
*/
if (blockState == null) {
return false;
}
/**
* Otherwise, if there is a block assigned, then we need to be more specific and check only
* terminals for trips on this block.
*/
final ScheduledBlockLocation blockLocation = blockState.getBlockLocation();
if (blockLocation == null) return false;
final BlockStopTimeEntry layoverSpot = getPotentialLayoverSpot(blockLocation, optimistic);
if (layoverSpot == null) return false;
final double dist =
TurboButton.distance(
obs.getLocation(), layoverSpot.getStopTime().getStop().getStopLocation());
return dist <= _layoverStopDistance;
}
public double getDistanceToBlockLocation(Observation obs, BlockState blockState) {
final ScheduledBlockLocation blockLocation = blockState.getBlockLocation();
final CoordinatePoint blockStart = blockLocation.getLocation();
final CoordinatePoint currentLocation = obs.getLocation();
return TurboButton.distance(currentLocation, blockStart);
}
/**
* This method determines if an observation record is within a certain radius,
* _terminalSearchRadius argument, of a stop at the start or end of a given block.
*
* @param record
* @param blockInstance
* @return whether the observation is within the search radius
*/
public static boolean isAtPotentialBlockTerminal(
NycRawLocationRecord record, BlockInstance blockInstance) {
final CoordinatePoint loc = new CoordinatePoint(record.getLatitude(), record.getLongitude());
final StopEntry firstStop =
blockInstance.getBlock().getStopTimes().get(0).getStopTime().getStop();
final double firstStopDist = TurboButton.distance(loc, firstStop.getStopLocation());
final int lastStopIdx = blockInstance.getBlock().getStopTimes().size() - 1;
final StopEntry lastStop =
blockInstance.getBlock().getStopTimes().get(lastStopIdx).getStopTime().getStop();
final double lastStopDist = TurboButton.distance(loc, lastStop.getStopLocation());
if (firstStopDist <= _terminalSearchRadius || lastStopDist <= _terminalSearchRadius) {
return true;
}
return false;
}
private static double getAvgVelocityToNextStop(Observation obs, BlockState blockState) {
StopTimeEntry stop = blockState.getBlockLocation().getNextStop().getStopTime();
final double distToDest =
TurboButton.distance(obs.getLocation(), stop.getStop().getStopLocation());
final int currSchedTime =
(int) (obs.getTime() - blockState.getBlockInstance().getServiceDate()) / 1000;
final double expectedVelocity;
if (currSchedTime >= stop.getArrivalTime()) {
/*
* Assumption here is that the driver will speed up to get to the stop on time.
* TODO: check this.
*/
expectedVelocity = _avgVelocity * 3d / 2d;
} else {
expectedVelocity = distToDest / (stop.getArrivalTime() - currSchedTime);
}
return expectedVelocity;
}
