public GHResponse route(
List<GHPoint> waypoints, List<Double> headings, boolean withInstructions) {
if (waypoints.size() < 2) {
throw new IllegalArgumentException("Number of waypoints must be greater or equal 2");
}
GHRequest request;
if (headings != null) {
request = new GHRequest(waypoints, headings);
request.setVehicle(FlagEncoderFactory.CAR);
request.setWeighting("fastest");
if (!USE_CONTRACTION_HIERARCHIES) {
request.getHints().put(Parameters.CH.DISABLE, true);
request.getHints().put("routing.flexible_mode.force", true);
request.getHints().put(Parameters.Routing.EDGE_BASED, true);
} else {
request
.getHints()
.put(
Parameters.CH.FORCE_HEADING,
true); // Allow headings for routes using CH, but may produce artifacts (see
// https://github.com/graphhopper/graphhopper/pull/434#issuecomment-110275256)
}
} else {
request = new GHRequest(waypoints);
}
request.setLocale(Locale.getDefault()).setAlgorithm(Parameters.Algorithms.DIJKSTRA_BI);
if (!withInstructions) {
request.getHints().put(Parameters.Routing.INSTRUCTIONS, false);
}
return gh.route(request);
}
@Override
public GHResponse route(GHRequest request) {
try {
String places = "";
for (GHPoint p : request.getPoints()) {
places += "point=" + p.lat + "," + p.lon + "&";
}
boolean tmpInstructions = request.getHints().getBool("instructions", instructions);
boolean tmpCalcPoints = request.getHints().getBool("calc_points", calcPoints);
if (tmpInstructions && !tmpCalcPoints)
throw new IllegalStateException(
"Cannot calculate instructions without points (only points without instructions). "
+ "Use calc_points=false and instructions=false to disable point and instruction calculation");
boolean tmpElevation = request.getHints().getBool("elevation", elevation);
String url =
routeServiceUrl
+ "?"
+ places
+ "&type=json"
+ "&instructions="
+ tmpInstructions
+ "&points_encoded=true"
+ "&calc_points="
+ tmpCalcPoints
+ "&algorithm="
+ request.getAlgorithm()
+ "&locale="
+ request.getLocale().toString()
+ "&elevation="
+ tmpElevation;
if (!request.getVehicle().isEmpty()) url += "&vehicle=" + request.getVehicle();
if (!key.isEmpty()) url += "&key=" + key;
for (Entry<String, String> entry : request.getHints().toMap().entrySet()) {
String urlKey = entry.getKey();
String urlValue = entry.getValue();
// use lower case conversion for check only!
if (ignoreSet.contains(urlKey.toLowerCase())) continue;
if (urlValue != null && !urlValue.isEmpty())
url += "&" + WebHelper.encodeURL(urlKey) + "=" + WebHelper.encodeURL(urlValue);
}
String str = downloader.downloadAsString(url, true);
JSONObject json = new JSONObject(str);
GHResponse res = new GHResponse();
res.addErrors(readErrors(json));
if (res.hasErrors()) return res;
JSONArray paths = json.getJSONArray("paths");
for (int index = 0; index < paths.length(); index++) {
JSONObject path = paths.getJSONObject(index);
PathWrapper altRsp = createPathWrapper(path, tmpCalcPoints, tmpInstructions, tmpElevation);
res.add(altRsp);
}
return res;
} catch (Exception ex) {
throw new RuntimeException(
"Problem while fetching path " + request.getPoints() + ": " + ex.getMessage(), ex);
}
}
@Override
public GHResponse route(GHRequest request) {
StopWatch sw = new StopWatch().start();
double took = 0;
try {
String url =
serviceUrl
+ "?point="
+ request.getFrom().lat
+ ","
+ request.getFrom().lon
+ "&point="
+ request.getTo().lat
+ ","
+ request.getTo().lon
+ "&type=json"
+ "&points_encoded="
+ pointsEncoded
+ "&min_path_precision="
+ request.getHint("douglas.minprecision", 1)
+ "&algo="
+ request.getAlgorithm();
String str = downloader.downloadAsString(url);
JSONObject json = new JSONObject(str);
took = json.getJSONObject("info").getDouble("took");
JSONArray paths = json.getJSONArray("paths");
JSONObject firstPath = paths.getJSONObject(0);
boolean is3D = false;
if (firstPath.has("points_dim")) is3D = "3".equals(firstPath.getString("points_dim"));
double distance = firstPath.getDouble("distance");
int time = firstPath.getInt("time");
PointList pointList;
if (pointsEncoded) {
pointList = WebHelper.decodePolyline(firstPath.getString("points"), 100, is3D);
} else {
JSONArray coords = firstPath.getJSONObject("points").getJSONArray("coordinates");
pointList = new PointList(coords.length(), is3D);
for (int i = 0; i < coords.length(); i++) {
JSONArray arr = coords.getJSONArray(i);
double lon = arr.getDouble(0);
double lat = arr.getDouble(1);
if (is3D) pointList.add(lat, lon, arr.getDouble(2));
else pointList.add(lat, lon);
}
}
GHResponse res = new GHResponse();
if (instructions) {
JSONArray instrArr = firstPath.getJSONArray("instructions");
InstructionList il = new InstructionList();
for (int instrIndex = 0; instrIndex < instrArr.length(); instrIndex++) {
JSONObject jsonObj = instrArr.getJSONObject(instrIndex);
double instDist = jsonObj.getDouble("distance");
String text = jsonObj.getString("text");
long instTime = jsonObj.getLong("time");
int sign = jsonObj.getInt("sign");
JSONArray iv = jsonObj.getJSONArray("interval");
int from = iv.getInt(0);
int to = iv.getInt(1);
PointList instPL = new PointList(to - from, is3D);
for (int j = from; j <= to; j++) {
instPL.add(pointList, j);
}
// TODO way and payment type
Instruction instr =
new Instruction(sign, text, -1, -1, instPL).setDistance(instDist).setTime(instTime);
il.add(instr);
}
res.setInstructions(il);
}
return res.setPoints(pointList).setDistance(distance).setMillis(time);
} catch (Exception ex) {
throw new RuntimeException(
"Problem while fetching path " + request.getFrom() + "->" + request.getTo(), ex);
} finally {
logger.debug("Full request took:" + sw.stop().getSeconds() + ", API took:" + took);
}
}