Merge pull request #549 from afischerdev/engine-mode

Introducing engineMode for future use

brouter-core/src/main/java/btools/router/OsmTrack.java

@@ -839,6 +839,49 @@ public final class OsmTrack {
     return sb.toString();
   }
 
+  static public String formatAsGpxWaypoint(OsmNodeNamed n) {
+    try {
+      StringWriter sw = new StringWriter(8192);
+      BufferedWriter bw = new BufferedWriter(sw);
+      formatGpxHeader(bw);
+      formatWaypointGpx(bw, n);
+      formatGpxFooter(bw);
+      bw.close();
+      sw.close();
+      return sw.toString();
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  static public void formatGpxHeader(BufferedWriter sb) throws IOException {
+    sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+    sb.append("<gpx \n");
+    sb.append(" xmlns=\"http://www.topografix.com/GPX/1/1\" \n");
+    sb.append(" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" \n");
+    sb.append(" xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd\" \n");
+    sb.append(" creator=\"BRouter-" + version + "\" version=\"1.1\">\n");
+  }
+
+  static public void formatGpxFooter(BufferedWriter sb) throws IOException {
+    sb.append("</gpx>\n");
+  }
+
+  static public void formatWaypointGpx(BufferedWriter sb, OsmNodeNamed n) throws IOException {
+    sb.append(" <wpt lon=\"").append(formatILon(n.ilon)).append("\" lat=\"")
+      .append(formatILat(n.ilat)).append("\">");
+    if (n.getSElev() != Short.MIN_VALUE) {
+      sb.append("<ele>").append("" + n.getElev()).append("</ele>");
+    }
+    if (n.name != null) {
+      sb.append("<name>").append(StringUtils.escapeXml10(n.name)).append("</name>");
+    }
+    if (n.nodeDescription != null) {
+      sb.append("<desc>").append("hat desc").append("</desc>");
+    }
+    sb.append("</wpt>\n");
+  }
+
   public void writeKml(String filename) throws Exception {
     BufferedWriter bw = new BufferedWriter(new FileWriter(filename));
 

brouter-core/src/main/java/btools/router/RoutingEngine.java

@@ -25,6 +25,11 @@ import btools.util.SortedHeap;
 import btools.util.StackSampler;
 
 public class RoutingEngine extends Thread {
+
+  public final static int BROUTER_ENGINEMODE_ROUTING = 0;
+  public final static int BROUTER_ENGINEMODE_SEED = 1;
+  public final static int BROUTER_ENGINEMODE_GETELEV = 2;
+
   private NodesCache nodesCache;
   private SortedHeap<OsmPath> openSet = new SortedHeap<>();
   private boolean finished = false;
@@ -37,12 +42,15 @@ public class RoutingEngine extends Thread {
   private int MAXNODES_ISLAND_CHECK = 500;
   private OsmNodePairSet islandNodePairs = new OsmNodePairSet(MAXNODES_ISLAND_CHECK);
 
+  private int engineMode = 0;
+
   private int MAX_STEPS_CHECK = 10;
 
   protected OsmTrack foundTrack = new OsmTrack();
   private OsmTrack foundRawTrack = null;
   private int alternativeIndex = 0;
 
+  protected String outputMessage = null;
   protected String errorMessage = null;
 
   private volatile boolean terminated;
@@ -73,12 +81,18 @@ public class RoutingEngine extends Thread {
 
   public RoutingEngine(String outfileBase, String logfileBase, File segmentDir,
                        List<OsmNodeNamed> waypoints, RoutingContext rc) {
+    this(outfileBase, logfileBase, segmentDir, waypoints, rc, 0);
+  }
+
+  public RoutingEngine(String outfileBase, String logfileBase, File segmentDir,
+                       List<OsmNodeNamed> waypoints, RoutingContext rc, int engineMode) {
     this.segmentDir = segmentDir;
     this.outfileBase = outfileBase;
     this.logfileBase = logfileBase;
     this.waypoints = waypoints;
     this.infoLogEnabled = outfileBase != null;
     this.routingContext = rc;
+    this.engineMode = engineMode;
 
     File baseFolder = new File(routingContext.localFunction).getParentFile();
     baseFolder = baseFolder == null ? null : baseFolder.getParentFile();
@@ -105,6 +119,7 @@ public class RoutingEngine extends Thread {
     if (hasInfo()) {
       logInfo("parsed profile " + rc.localFunction + " cached=" + cachedProfile);
     }
+
   }
 
   private boolean hasInfo() {
@@ -138,6 +153,24 @@ public class RoutingEngine extends Thread {
   }
 
   public void doRun(long maxRunningTime) {
+
+    switch (engineMode) {
+      case BROUTER_ENGINEMODE_ROUTING:
+        doRouting(maxRunningTime);
+        break;
+      case BROUTER_ENGINEMODE_SEED: /* do nothing, handled the old way */
+        break;
+      case BROUTER_ENGINEMODE_GETELEV:
+        doGetElev();
+        break;
+      default:
+        doRouting(maxRunningTime);
+        break;
+    }
+  }
+
+
+  public void doRouting(long maxRunningTime) {
     try {
       startTime = System.currentTimeMillis();
       long startTime0 = startTime;
@@ -237,6 +270,44 @@ public class RoutingEngine extends Thread {
     }
   }
 
+  public void doGetElev() {
+    try {
+      startTime = System.currentTimeMillis();
+
+      routingContext.turnInstructionMode = 9;
+      MatchedWaypoint wpt1 = new MatchedWaypoint();
+      wpt1.waypoint = waypoints.get(0);
+      wpt1.name = "wpt_info";
+      List<MatchedWaypoint> listOne = new ArrayList<>();
+      listOne.add(wpt1);
+      matchWaypointsToNodes(listOne);
+
+      resetCache(true);
+      nodesCache.nodesMap.cleanupMode = 0;
+
+      int dist_cn1 = listOne.get(0).crosspoint.calcDistance(listOne.get(0).node1);
+      int dist_cn2 = listOne.get(0).crosspoint.calcDistance(listOne.get(0).node2);
+
+      OsmNode startNode;
+      if (dist_cn1 < dist_cn2) {
+        startNode = nodesCache.getStartNode(listOne.get(0).node1.getIdFromPos());
+      } else {
+        startNode = nodesCache.getStartNode(listOne.get(0).node2.getIdFromPos());
+      }
+
+      OsmNodeNamed n = new OsmNodeNamed(listOne.get(0).crosspoint);
+      n.selev = startNode != null ? startNode.getSElev() : Short.MIN_VALUE;
+
+      outputMessage = OsmTrack.formatAsGpxWaypoint(n);
+
+      long endTime = System.currentTimeMillis();
+      logInfo("execution time = " + (endTime - startTime) / 1000. + " seconds");
+    } catch (Exception e) {
+      e.getStackTrace();
+      logException(e);
+    }
+  }
+
   private void postElevationCheck(OsmTrack track) {
     OsmPathElement lastPt = null;
     OsmPathElement startPt = null;
@@ -1543,6 +1614,10 @@ public class RoutingEngine extends Thread {
     return foundTrack;
   }
 
+  public String getFoundInfo() {
+    return outputMessage;
+  }
+
   public int getAlternativeIndex() {
     return alternativeIndex;
   }

brouter-routing-app/src/main/aidl/btools/routingapp/IBRouterService.aidl

@@ -34,6 +34,7 @@ interface IBRouterService {
     //  "timode"          = turnInstructionMode [0=none, 1=auto-choose, 2=locus-style, 3=osmand-style, 4=comment-style, 5=gpsies-style, 6=orux-style, 7=locus-old-style] default 0
     //  "heading"         = angle (optional to give a route a start direction)
     //  "direction"       = angle (optional, used like "heading" on a recalculation request by Locus as start direction)
+    //  "engineMode"      = 0 (optional, default 0, 2 = get elevation)
 
     // return null if all ok and no path given, the track if ok and path given, an error message if it was wrong
     //        the resultas string when 'pathToFileResult' is null, this should be default when Android Q or later

brouter-routing-app/src/main/java/btools/routingapp/BRouterService.java

@@ -6,7 +6,6 @@ import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Base64;
-import android.util.Log;
 
 import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
@@ -24,6 +23,7 @@ import java.util.List;
 import java.util.zip.GZIPOutputStream;
 
 import btools.router.OsmNodeNamed;
+import btools.router.RoutingEngine;
 
 public class BRouterService extends Service {
 
@@ -39,6 +39,15 @@ public class BRouterService extends Service {
 
       BRouterWorker worker = new BRouterWorker();
 
+      for (String key : params.keySet()) {
+        // Log.d("BS", "income " + key + " = " + params.get(key));
+      }
+
+      int engineMode = 0;
+      if (params.containsKey("engineMode")) {
+        engineMode = params.getInt("engineMode", 0);
+      }
+
       // get base dir from private file
       String baseDir = null;
       InputStream configInput = null;
@@ -56,14 +65,15 @@ public class BRouterService extends Service {
       }
       worker.baseDir = baseDir;
       worker.segmentDir = new File(baseDir, "brouter/segments4");
+      String errMsg = null;
 
+      if (engineMode == RoutingEngine.BROUTER_ENGINEMODE_ROUTING) {
         String remoteProfile = params.getString("remoteProfile", null);
 
         if (remoteProfile == null) {
           remoteProfile = checkForTestDummy(baseDir);
         }
 
-      String errMsg = null;
         if (remoteProfile != null) {
           errMsg = getConfigForRemoteProfile(worker, baseDir, remoteProfile);
         } else if (params.containsKey("profile")) {
@@ -83,7 +93,9 @@ public class BRouterService extends Service {
         } else {
           errMsg = getConfigFromMode(worker, baseDir, params.getString("v"), params.getString("fast"));
         }
-
+      } else {
+        worker.profilePath = baseDir + "/brouter/profiles2/dummy.brf";
+      }
       if (errMsg != null) {
         return errMsg;
       }
@@ -290,7 +302,6 @@ public class BRouterService extends Service {
   @Override
   @SuppressWarnings("deprecation")
   public void onStart(Intent intent, int startId) {
-    Log.d(getClass().getSimpleName(), "onStart()");
     handleStart(intent, startId);
   }
 

brouter-routing-app/src/main/java/btools/routingapp/BRouterWorker.java

@@ -33,6 +33,12 @@ public class BRouterWorker {
   public String profileParams;
 
   public String getTrackFromParams(Bundle params) {
+
+    int engineMode = 0;
+    if (params.containsKey("engineMode")) {
+      engineMode = params.getInt("engineMode", 0);
+    }
+
     String pathToFileResult = params.getString("pathToFileResult");
 
     if (pathToFileResult != null) {
@@ -97,7 +103,7 @@ public class BRouterWorker {
       waypoints = readPositions(params);
     }
     if (params.containsKey("lonlats")) {
-      waypoints = readLonlats(params);
+      waypoints = readLonlats(params, engineMode);
     }
 
     if (waypoints == null) return "no pts ";
@@ -141,16 +147,16 @@ public class BRouterWorker {
       }
     }
 
-
     try {
       writeTimeoutData(rc);
     } catch (Exception e) {
     }
 
-    RoutingEngine cr = new RoutingEngine(null, null, segmentDir, waypoints, rc);
+    RoutingEngine cr = new RoutingEngine(null, null, segmentDir, waypoints, rc, engineMode);
     cr.quite = true;
     cr.doRun(maxRunningTime);
 
+    if (engineMode == RoutingEngine.BROUTER_ENGINEMODE_ROUTING) {
       // store new reference track if any
       // (can exist for timed-out search)
       if (cr.getFoundRawTrack() != null) {
@@ -208,6 +214,12 @@ public class BRouterWorker {
           return "error writing file: " + e;
         }
       }
+    } else {    // get other infos
+      if (cr.getErrorMessage() != null) {
+        return cr.getErrorMessage();
+      }
+      return cr.getFoundInfo();
+    }
     return null;
   }
 
@@ -229,25 +241,31 @@ public class BRouterWorker {
       wplist.add(n);
     }
     if (wplist.get(0).name.startsWith("via")) wplist.get(0).name = "from";
-    if (wplist.get(wplist.size() - 1).name.startsWith("via")) wplist.get(wplist.size() - 1).name = "to";
+    if (wplist.get(wplist.size() - 1).name.startsWith("via"))
+      wplist.get(wplist.size() - 1).name = "to";
 
     return wplist;
   }
 
-  private List<OsmNodeNamed> readLonlats(Bundle params) {
+  private List<OsmNodeNamed> readLonlats(Bundle params, int mode) {
     List<OsmNodeNamed> wplist = new ArrayList<>();
 
     String lonLats = params.getString("lonlats");
     if (lonLats == null) throw new IllegalArgumentException("lonlats parameter not set");
 
-    String[] coords = lonLats.split("\\|");
+    String[] coords;
+    if (mode == 0) {
+      coords = lonLats.split("\\|");
       if (coords.length < 2)
         throw new IllegalArgumentException("we need two lat/lon points at least!");
-
+    } else {
+      coords = new String[1];
+      coords[0] = lonLats;
+    }
     for (int i = 0; i < coords.length; i++) {
       String[] lonLat = coords[i].split(",");
       if (lonLat.length < 2)
-        throw new IllegalArgumentException("we need two lat/lon points at least!");
+        throw new IllegalArgumentException("we need a lat and lon point at least!");
       wplist.add(readPosition(lonLat[0], lonLat[1], "via" + i));
       if (lonLat.length > 2) {
         if (lonLat[2].equals("d")) {
@@ -259,7 +277,8 @@ public class BRouterWorker {
     }
 
     if (wplist.get(0).name.startsWith("via")) wplist.get(0).name = "from";
-    if (wplist.get(wplist.size() - 1).name.startsWith("via")) wplist.get(wplist.size() - 1).name = "to";
+    if (wplist.get(wplist.size() - 1).name.startsWith("via"))
+      wplist.get(wplist.size() - 1).name = "to";
 
     return wplist;
   }

brouter-server/src/main/java/btools/server/RouteServer.java

@@ -191,8 +191,11 @@ public class RouteServer extends Thread implements Comparable<RouteServer> {
       if (wplist.size() < 10) {
         SuspectManager.nearRecentWps.add(wplist);
       }
+      int engineMode = 0;
       for (Map.Entry<String, String> e : params.entrySet()) {
-        if ("timode".equals(e.getKey())) {
+        if ("engineMode".equals(e.getKey())) {
+          engineMode = Integer.parseInt(e.getValue());
+        } else if ("timode".equals(e.getKey())) {
           rc.turnInstructionMode = Integer.parseInt(e.getValue());
         } else if ("heading".equals(e.getKey())) {
           rc.startDirection = Integer.parseInt(e.getValue());
@@ -210,7 +213,7 @@ public class RouteServer extends Thread implements Comparable<RouteServer> {
           }
         }
       }
-      cr = new RoutingEngine(null, null, serviceContext.segmentDir, wplist, rc);
+      cr = new RoutingEngine(null, null, serviceContext.segmentDir, wplist, rc, engineMode);
       cr.quite = true;
       cr.doRun(maxRunningTime);
 

docs/developers/android_service.md

@@ -44,3 +44,10 @@ This parameters are needed to tell BRouter what to do.
 Profile parameters affect the result of a profile.
 For the app it is a list of params concatenated by '&'. E.g. extraParams=avoidferry=1&avoidsteps=0
 The server calls profile params by a prefix 'profile:'. E.g. ...&profile:avoidferry=1&profile:avoidsteps=0
+
+
+## other routing engine modes in app
+
+### get elevation
+
+"engineMode=2" allows a client to only request an elevation for a point. This can be restricted with "waypointCatchingRange".

docs/revisions.md

@@ -2,6 +2,18 @@
 
 (ZIP-Archives including APK, readme + profiles)
 
+### New since last version
+
+Android
+
+- Add parameter dialog for profile
+
+Library
+
+- Add new function 'get elevation'
+- Minor bug fixes
+
+
 ### [brouter-1.7.0.zip](../brouter_bin/brouter-1.7.0.zip) (current revision, 29.04.2023)
 
 Android