function continuePath($path, $destination, $lineName)
{
$debug = true;
outputDebug("algorithm.continuePath()", $debug);
$currentStation = $path->getCurrentStation();
$currentLine = $currentStation->getLine($lineName);
$connections = $currentLine->getConnections();
if ($debug) {
echo "currentStation = " . $currentStation->getName() . " (" . $currentStation->getID() . ")<br/>\n";
echo "currentLine = " . $currentLine->name . "<br/>\n";
echo "continuePath() :: found " . count($connections) . " connections.<br/>\n";
}
$newPaths = array();
foreach ($connections as $connection) {
if ($connection->id == $path->getLastStation()->getID()) {
continue;
}
// create a new segment from the connection
outputDebug("connection->id = " . $connection->id, $debug);
$nextStation = retrieveStation($connection->id);
$visited = isVisited($nextStation, $path->visited);
if ($visited) {
if (count($connections) == 1) {
// end of the line. no match.
outputDebug("end of line.", $debug);
$newPaths[] = new MetaPath("EOL", $path);
return $newPaths;
} else {
// we only care to go in the forward direction
outputDebug("continuePath() :: already visited.", $debug);
continue;
}
}
$lines = $currentStation->getOverlapLines($nextStation);
$newPath = new Path($path, $nextStation, $currentLine, $connection);
$pathDestination = $path->getDestination();
if ($destination instanceof Station2 && $nextStation->getID() == $destination->getID()) {
outputDebug("found match, creating completed path", $debug);
$newPaths[] = new MetaPath("match", $newPath);
continue;
}
if ($pathDestination instanceof Station2 && $nextStation->getID() == $pathDestination->getID()) {
outputDebug("found path destination, creating completed path", $debug);
$newPaths[] = new MetaPath("found", $newPath);
continue;
}
outputDebug("adding path to list = " . $newPath->toString(), $debug);
$newPaths[] = new MetaPath("continue", $newPath);
}
outputDebug("algorithm.continuePath() : DONE", $debug);
return $newPaths;
}
if ($type == "s2s") {
// S2S
// get starting point
//$start_marker = getMarker($sid);
// get ending point
//$end_marker = getMarker($did);
// log
if ($logging) {
logS2SQuery($sid, $did);
}
// testing new function
echo "***testing new algorithm<br/>\n";
//$start_station = retrieveStation($start_marker->id);
//$end_station = retrieveStation($end_marker->id);
$start_station = retrieveStation($sid);
$end_station = retrieveStation($did);
$pathArray = algorithm($start_station, $end_station);
$path = $pathArray[0];
echo "*** end testing new algorithm<br/>\n";
// find the path
//$path = findS2SPath($start_marker, $end_marker);
} else {
if ($type == "location") {
// location
if ($sa != "") {
$loc = $sa;
} else {
$loc = $da;
}
// log
if ($logging) {
