Darstellung mehrerer Routen auf einer google map

Display multiple routes on google map with waypoints and direction arrow
==============

Klicken Sie auf hier!

![In image u can see 2 routes with direction arrow][1]

 <style>
    html, body, #map_canvas { margin: 0; padding: 0; height: 100% }
    </style>


     <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>

    <script>




      var directionsService;
      var stepDisplay;

      var position;
      var marker = [];
      var polyline = [];
      var poly2 = [];
      var poly = null;
      var startLocation = [];
      var endLocation = [];
      var timerHandle = [];




      var stops_data = [[ {"Geometry":{"Latitude":23.05242,"Longitude":72.53375}},

                          {"Geometry":{"Latitude":23.03007,"Longitude":72.59664}}

                        ] ,[ {"Geometry":{"Latitude":23.00959,"Longitude":72.56189}},
                             {"Geometry":{"Latitude":23.05754,"Longitude":72.55302}}
                           ]];



      var a,z,b;

      var add;


      var speed = 0.000005, wait = 1;
      var infowindow = null;


       infowindow = new google.maps.InfoWindow();


      var myPano;   
      var panoClient;
      var nextPanoId;








          var directionsDisplay = [];

          directionsDisplay[0] = new window.google.maps.DirectionsRenderer({
              suppressMarkers: true

            });


          directionsDisplay[1] = new window.google.maps.DirectionsRenderer({
              suppressMarkers: true

            });

          var map;
          var mapOptions = { center: new google.maps.LatLng(42.5584308, -70.8597732), zoom: 3,
            mapTypeId: google.maps.MapTypeId.ROADMAP };

          function initialize() 
          {
            map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);


            directionsService = new google.maps.DirectionsService();


         //  Setroute(locations[0],locations[1],directionsDisplay[0]);

           //Setroute(locations2[0],locations2[1],directionsDisplay[1]);


            Tour_startUp(stops_data[0]);

            window.tour.loadMap(map, directionsDisplay[0]);
           window.tour.fitBounds(stops_data[0],map);



            if (stops_data[0].length > 1)
                window.tour.calcRoute(stops_data[0],directionsService, directionsDisplay[0]);



            Tour_startUp(stops_data[1]);
            window.tour.loadMap(map, directionsDisplay[1]);
            window.tour.calcRoute(stops_data[1],directionsService, directionsDisplay[1]);
            window.tour.fitBounds(stops_data[1],map);





          }




    function fx(o)
    {
      if(o && o.legs)
      {
        for(l=0;l<o.legs.length;l++)
        {
          var leg=o.legs[l];
          for(var s=0;s<leg.steps.length;++s)
          {
            var step=leg.steps[s],
                a=(step.lat_lngs.length)?step.lat_lngs[0]:step.start_point,
                z=(step.lat_lngs.length)?step.lat_lngs[1]:step.end_point,
                dir=((Math.atan2(z.lng()-a.lng(),z.lat()-a.lat())*180)/Math.PI)+360,
                ico=((dir-(dir%3))%120);
                new google.maps.Marker({
                  position: a,
                  icon: new google.maps.MarkerImage('http://maps.google.com/mapfiles/dir_'+ico+'.png',
                                              new google.maps.Size(24,24),
                                              new google.maps.Point(0,0),
                                              new google.maps.Point(12,12)
                                             ),
            map: map,
            title: Math.round((dir>360)?dir-360:dir)+'°'
          });

          }
        }
      }
    }


    function Tour_startUp(stops) {

        // alert('first'+stops.length);     

        if (!window.tour) window.tour = {
            updateStops: function (newStops) {
                stops = newStops;
            },


            //map: google map object
            //directionsDisplay: google directionsDisplay object (comes in empty)
            loadMap: function (map, dirdis) {
                var myOptions = {
                    zoom: 15,
                    center: new window.google.maps.LatLng(51.507937, -0.076188), //default to London
                    mapTypeId: window.google.maps.MapTypeId.ROADMAP
                };
                map.setOptions(myOptions);
                dirdis.setMap(map);
            },
         fitBounds: function (stops_data,map) {
                var bounds = new window.google.maps.LatLngBounds();

                //extend bounds for each record 
                for( var x in stops_data) {
                    var myLatlng = new window.google.maps.LatLng(stops_data[x].Geometry.Latitude, stops_data[x].Geometry.Longitude);
                    bounds.extend(myLatlng);
                }
                map.fitBounds(bounds);
            },
            calcRoute: function (stops_new,directionsService, dirdis) {
                var batches = [];
                var itemsPerBatch = 10; //google API max = 10 - 1 start, 1 stop, and 8 waypoints
                var itemsCounter = 0;
                var wayptsExist = stops_new.length > 0;
                var time= [];
                while (wayptsExist) {
                    var subBatch = [];
                    var subitemsCounter = 0;

                   //alert('second'+stops_new.length);        
            //alert(stops_new[0].Geometry.Latitude +' ===== ' +stops_new[0].Geometry.Longitude);


                    for (var j = itemsCounter; j < stops_new.length; j++) {
                        subitemsCounter++;

                    //alert(stops[j].Geometry.Time);



                        subBatch.push({
                            location: new window.google.maps.LatLng(stops_new[j].Geometry.Latitude, stops_new[j].Geometry.Longitude),
                            stopover: true

                        });

                       //time.push(stops[j].Geometry.Time);

                        if (subitemsCounter == itemsPerBatch)
                            break;
                    }

                    itemsCounter += subitemsCounter;
                    batches.push(subBatch);
                    wayptsExist = itemsCounter < stops_new.length;
                    //If it runs again there are still points. Minus 1 before continuing to
                    //start up with end of previous tour leg
                    itemsCounter--;
                }

                //now we should have a 2 dimensional array with a list of a list of waypoints
                var combinedResults;
                var unsortedResults = [{}]; //to hold the counter and the results themselves as they come back, to later sort
                var directionsResultsReturned = 0;




                for (var k = 0; k < batches.length; k++) {
                    var lastIndex = batches[k].length - 1;
                    var start = batches[k][0].location;
                    var end = batches[k][lastIndex].location;

                    //trim first and last entry from array
                    var waypts = [];
                    waypts = batches[k];
                    waypts.splice(0, 1);
                    waypts.splice(waypts.length - 1, 1);

                    var request = 
                        {
                        origin: start,
                        destination: end,
                        waypoints: waypts,
                        travelMode: window.google.maps.TravelMode.WALKING
                    };

                  // alert('start'+start);

                 //  alert('end'+end);


                    (function (kk) {
                        directionsService.route(request, function (result, status) {



                            if (status == window.google.maps.DirectionsStatus.OK) {


                                 fx(result.routes[0]);

                                 polyline[0] = new google.maps.Polyline({
                                     path: [],
                                     strokeColor: '#FFFF00',
                                     strokeWeight: 3
                                     });


                                 poly2[0] = new google.maps.Polyline({
                                     path: [],
                                     strokeColor: '#FFFF00',
                                     strokeWeight: 3
                                     });     


                                var unsortedResult = { order: kk, result: result };
                                unsortedResults.push(unsortedResult);

                                directionsResultsReturned++;

                                if (directionsResultsReturned == batches.length) //we've received all the results. put to map
                                {
                                    //sort the returned values into their correct order
                                    unsortedResults.sort(function (a, b) { return parseFloat(a.order) - parseFloat(b.order); });
                                    var count = 0;
                                    for (var key in unsortedResults) {
                                        if (unsortedResults[key].result != null) {
                                            if (unsortedResults.hasOwnProperty(key)) {
                                                if (count == 0) //first results. new up the combinedResults object
                                                    combinedResults = unsortedResults[key].result;
                                                else {
                                                    //only building up legs, overview_path, and bounds in my consolidated object. This is not a complete
                                                    //directionResults object, but enough to draw a path on the map, which is all I need
                                                    combinedResults.routes[0].legs = combinedResults.routes[0].legs.concat(unsortedResults[key].result.routes[0].legs);
                                                    combinedResults.routes[0].overview_path = combinedResults.routes[0].overview_path.concat(unsortedResults[key].result.routes[0].overview_path);

                                                    combinedResults.routes[0].bounds = combinedResults.routes[0].bounds.extend(unsortedResults[key].result.routes[0].bounds.getNorthEast());
                                                    combinedResults.routes[0].bounds = combinedResults.routes[0].bounds.extend(unsortedResults[key].result.routes[0].bounds.getSouthWest());
                                                }
                                                count++;
                                            }
                                        }
                                    }
                                    dirdis.setDirections(combinedResults);


                                    var legs = combinedResults.routes[0].legs;

                                    var path = combinedResults.routes[0].overview_path;

                                    //alert(path.length);

                                 // alert(legs.length);

                                  //setRoutes(legs[0].start_location,legs[legs.length-1].end_location);



                                    for (var i=0; i < legs.length;i++)
                                        {
                                              var markerletter = "A".charCodeAt(0);
                                              markerletter += i;
                                      markerletter = String.fromCharCode(markerletter);

                                      if (i == 0) { 

                                        //marker[0] = createMarker2(legs[i].start_location,"start",legs[i].start_address,"green");
                                      }

                                      var steps = legs[i].steps;

                                    // alert('arrival time : '+legs[i].arrival_time.text);

                                // var duration = steps.duration_in_traffic;

                                  //alert(duration.text);

                                      for (j=0;j<steps.length;j++) 
                                      {

                                          var nextSegment = steps[j].path;

                                          for (k=0;k<nextSegment.length;k++) 
                                              {
                                              polyline[0].getPath().push(nextSegment[k]);
                                              //bounds.extend(nextSegment[k]);
                                                 }
                                      }



                                    // createMarker(directionsDisplay.getMap(),legs[i].start_location,"marker"+i,"some text for marker "+i+"<br>"+legs[i].start_address,markerletter);   
                                    }
                                        //Marker for start point 
                                    createMarker(dirdis.getMap(),legs[0].start_location,"marker"+0,"Start Point<br>"+legs[0].start_address,'A');


                                    var i=legs.length;
                                    var markerletter = "A".charCodeAt(0);
                                      markerletter += i;
                                    markerletter = String.fromCharCode(markerletter);

                                    //marker for End Point 
                                    createMarker(dirdis.getMap(),legs[legs.length-1].end_location,"marker"+i,"End Point <br>"+legs[legs.length-1].end_address,'B');

                                    polyline[0].setMap(map);

                                    //startAnimation(0);  
                                }
                            }
                        });
                    })(k);
                }
            }
        };
    }


    var icons = new Array();
    icons["red"] = new google.maps.MarkerImage("mapIcons/marker_red.png",
          //This marker is 20 pixels wide by 34 pixels tall.
          new google.maps.Size(20, 34),
          //The origin for this image is 0,0.
          new google.maps.Point(0,0),
          //The anchor for this image is at 9,34.
          new google.maps.Point(9, 34));



    function getMarkerImage(iconStr) {

    //alert(iconStr);

       if ((typeof(iconStr)=="undefined") || (iconStr==null)) { 
          iconStr = "red"; 
       }

    if(iconStr == 'A')
    {
       //for start point 


       if (!icons[iconStr]) {
          icons[iconStr] = new google.maps.MarkerImage("http://www.google.com/mapfiles/dd-start.png",
          //This marker is 20 pixels wide by 34 pixels tall.
          new google.maps.Size(20, 34),
          //The origin for this image is 0,0.
          new google.maps.Point(0,0),
          //The anchor for this image is at 6,20.
          new google.maps.Point(9, 34));
       } 

    }
    if (iconStr == 'B')
    {

        //for end point


        if (!icons[iconStr]) {
              icons[iconStr] = new google.maps.MarkerImage("http://www.google.com/mapfiles/dd-end.png",
              //This marker is 20 pixels wide by 34 pixels tall.
              new google.maps.Size(20, 34),
              //The origin for this image is 0,0.
              new google.maps.Point(0,0),
              //The anchor for this image is at 6,20.
              new google.maps.Point(9, 34));
           } 


        }
    return icons[iconStr];
    }
      //Marker sizes are expressed as a Size of X,Y
      //where the origin of the image (0,0) is located
      //in the top left of the image.

      //Origins, anchor positions and coordinates of the marker
      //increase in the X direction to the right and in
      //the Y direction down.

      var iconImage = new google.maps.MarkerImage('mapIcons/marker_red.png',
          //This marker is 20 pixels wide by 34 pixels tall.
          new google.maps.Size(20, 34),
          //The origin for this image is 0,0.
          new google.maps.Point(0,0),
          //The anchor for this image is at 9,34.
          new google.maps.Point(9, 34));



      var iconShadow = new google.maps.MarkerImage('http://www.google.com/mapfiles/shadow50.png',
          //The shadow image is larger in the horizontal dimension
          //while the position and offset are the same as for the main image.
          new google.maps.Size(37, 34),
          new google.maps.Point(0,0),
          new google.maps.Point(9, 34));
          //Shapes define the clickable region of the icon.
          //The type defines an HTML &lt;area&gt; element 'poly' which
          //traces out a polygon as a series of X,Y points. The final
          //coordinate closes the poly by connecting to the first
          //coordinate.
      var iconShape = {
          coord: [9,0,6,1,4,2,2,4,0,8,0,12,1,14,2,16,5,19,7,23,8,26,9,30,9,34,11,34,11,30,12,26,13,24,14,21,16,18,18,16,20,12,20,8,18,4,16,2,15,1,13,0],
          type: 'poly'
      };


    function createMarker(map, latlng, label, html, color) {

    //alert(color);
    // alert("createMarker("+latlng+","+label+","+html+","+color+")");


        var contentString = '<b>'+label+'</b><br>'+html;


    //   alert('creatMarker'+contentString);


        var marker = new google.maps.Marker({
            position: latlng,
            map: map,
            shadow: iconShadow,
            icon: getMarkerImage(color),
            shape: iconShape,
            title: label,
            zIndex: Math.round(latlng.lat()*-100000)<<5
            });
            marker.myname = label;

        google.maps.event.addListener(marker, 'click', function() {
            infowindow.setContent(contentString); 
            infowindow.open(map,marker);
            });


        return marker;
    }




          google.maps.event.addDomListener(window, 'load', initialize);

    </script>

    <div id="map_canvas"></div>


  [1]: http://i.stack.imgur.com/yB4Tw.png

Ihre directionsDisplay variable ist eine Instanz der google.maps.DirectionsRenderer() können, und dass nur eine Gruppe von Anweisungen zu einem Zeitpunkt. Wenn Sie anzeigen möchten, die mehr als eine route, müssen Sie mehrere google.maps.DirectionsRenderer().