2014-04-23 48 views
0

我試圖在地圖上的點之間繪製一條路徑。我有一個2分的數組(爲我的測試)。 我可以很容易地在地圖上繪製它們,但它看起來像方向服務沒有按預期工作。谷歌地圖導航服務2點之間的計算路徑

這是我應該得到根據谷歌地圖: enter image description here

但是,這是我所得到的: enter image description here

這裏是Jsfiddle

這裏是我的測試代碼:

var map = undefined; 

function initialize() 
{ 
    var mapOptions = { 
     center: new google.maps.LatLng(-33.885026, 151.268316), 
     mapTypeId: google.maps.MapTypeId.ROADMAP, 
     zoom: 14 
    }; 
    map = new google.maps.Map(document.getElementById("map"), mapOptions); 
} 

jQuery(document).ready(function($) 
{ 
    initialize(); 
    loadPaths(map); 
}); 

function loadPaths(gmap) 
{ 
    var latlngbounds = new google.maps.LatLngBounds(), 
     infoWindow = new google.maps.InfoWindow(), 
     pathPoints = [], 
     index=0, 
     positions = [ 
     {latitude: "-33.88914",longitude: "151.25673"}, 
     {latitude: "-33.888",longitude: "151.2623"}, 
    ]; 

    // The fix 
    positions.reverse(); 

    $.each(positions, function(k, v) { 
     var myLatlng = new google.maps.LatLng(v.latitude, v.longitude); 
     pathPoints.push(myLatlng); 
     index++; 
    }); 

    // Intialize the Path Array 
    var path = new google.maps.MVCArray(); 

    // Intialise the Direction Service 
    var service = new google.maps.DirectionsService(); 

    var iconSymbol = { 
     path: 'M 40 20 L 80 20 L 100 40 L 100 140 L 20 140 L 20 40 Z', 
     anchor: new google.maps.Point(60, 10), 
     scale: 0.15, 
     strokeColor: '#000000', 
     strokeWeight: 1, 
     fillColor: 'steelblue', 
     fillOpacity: 0.8, 
    }; 

    // Set the Path Stroke Color 
    var poly = new google.maps.Polyline({ 
     map: gmap, 
     strokeColor: '#dd0000', 
     icons: [{ 
      icon: iconSymbol 
     }] 
    }); 

    // Draw the path for this vehicle 
    // We compute the path between each point to follow the road 
    for (var i = 0; i < pathPoints.length; i++) { 
     // If it's not the last point 
     if ((i + 1) < pathPoints.length) { 
      var src = pathPoints[i]; 
      var des = pathPoints[i + 1]; 

      // We had the starting point to the poly path 
      path.push(src); 

      // We compute the path between the 2 points 
      service.route({ 
       origin: src, 
       destination: des, 
       travelMode: google.maps.DirectionsTravelMode.DRIVING, 
       unitSystem: google.maps.UnitSystem.IMPERIAL 
      }, function (result, status) { 
       if (status == google.maps.DirectionsStatus.OK) { 
        // We add the new computed points 
        for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) { 
         path.push(result.routes[0].overview_path[i]); 
        } 
       } 
      }); 
     } 
    } 

    // Set the path of the polyline to draw it 
    poly.setPath(path); 
} 

UPDATE

我固定的路徑感謝的問題@anto 但我仍然有一個問題的時間時間,道路不會被吸引。我認爲這是與服務回調函數asynchronous問題,但我不知道如何解決它。 如果我重新啓動腳本中的jsfiddle它的工作隨意,但有時我結束了這種繪圖:

enter image description here


更新2

它看起來像使用遞歸函數正在修復它的大部分,除了我的最後一點沒有畫出:http://jsfiddle.net/maxwell2022/wY32u/11/

+0

你確定這是雙向的起點?旅行模式WALKING返回的路徑較短。 –

+1

如果您在開始/停止時交換緯度/經度值,您將在Google Map站點獲得相同的路徑。 –

+0

正確,我必須更新我的問題,因爲我仍然有3分的問題。 – maxwell2022

回答

1

由於先點擊谷歌地圖時間其創建爲雙擊它,在地圖和路線顯示在地圖上創建終點在地圖上的第二次

enter image description here

>  var map; 
    >   var infowindow = new google.maps.InfoWindow(); 
    >   var wayA; 
    >   var wayB; 
    >   var geocoder = new google.maps.Geocoder(); 
    >   var directionsDisplay = new google.maps.DirectionsRenderer({ 
    >    suppressMarkers: true, 
    >    panel: document.getElementById('right-panel'), 
    >    draggable: true 
    >   }); 
    >   var directionsService = new google.maps.DirectionsService(); 
    >   var data = {}; 
    >   initMap(); 
    >   function initMap() { 
    >    debugger; 
    >    map = new google.maps.Map(document.getElementById('rmap'), { 
    >     center: new google.maps.LatLng(23.030357, 72.517845), 
    >     zoom: 15 
    >    }); 
    >    google.maps.event.addListener(map, "click", function (event) { 
    >     if (!wayA) { 
    >      wayA = new google.maps.Marker({ 
    >       position: event.latLng, 
    >       map: map, 
    >       icon: "https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=S|00FF00|000000" 
    >      }); 
    >     } else { 
    >      if (!wayB) { 
    >       debugger; 
    >       wayB = new google.maps.Marker({ 
    >        position: event.latLng, 
    >        map: map, 
    >        icon: "https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=E|FF0000|000000" 
    >       }); 
    >       calculateAndDisplayRoute(directionsService, directionsDisplay, wayA, wayB); 
    >      } 
    >     } 
    >    }); 
    >   } 
    >  function computeTotalDistance(result) { 
    >    var total = 0; 
    >    var myroute = result.routes[0]; 
    >    for (var i = 0; i < myroute.legs.length; i++) { 
    >     total += myroute.legs[i].distance.value; 
    >    } 
    >    total = total/1000; 
    >    return total; 
    >   } 
    >   function computeTotalDuration(result) { 
    >    var total = 0; 
    >    var myroute = result.routes[0].legs[0].duration.text; 
    >    return myroute; 
    >   } 
    >   function calculateAndDisplayRoute(directionsService, directionsDisplay, wayA, wayB) { 
    >    debugger; 
    >    directionsDisplay.setMap(map); 
    >    google.maps.event.addListener(directionsDisplay, 'directions_changed', function() { 
    >     debugger; 
    >     calculateAndDisplayRoute(directionsService, directionsDisplay.getDirections(), wayA, wayB); 
    >    }); 
    >    directionsService.route({ 
    >     origin: wayA.getPosition(), 
    >     destination: wayB.getPosition(), 
    >     optimizeWaypoints: true, 
    >     travelMode: 'DRIVING' 
    >    }, function (response, status) { 
    >     if (status === 'OK') { 
    >      debugger; 
    >  
    >      var route = response.routes[0]; 
    >      wayA.setMap(null); 
    >      wayB.setMap(null); 
    >      pinA = new google.maps.Marker({ 
    >       position: route.legs[0].start_location, 
    >       map: map, 
    >       icon: "https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=S|00FF00|000000" 
    >      }), 
    >      pinB = new google.maps.Marker({ 
    >       position: route.legs[0].end_location, 
    >       map: map, 
    >       icon: "https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=E|FF0000|000000" 
    >      }); 
    >      google.maps.event.addListener(pinA, 'click', function() { 
    >       infowindow.setContent("<b>Route Start Address = </b>" + route.legs[0].start_address + " <br/>" + route.legs[0].start_location); 
    >       infowindow.open(map, this); 
    >      }); 
    >      google.maps.event.addListener(pinB, 'click', function() { 
    >       debugger; 
    >       infowindow.setContent("<b>Route End Address = </b>" + route.legs[0].end_address + " <br/><b>Distance=</b> " + 
    > computeTotalDistance(directionsDisplay.getDirections()) + " Km 
    > <br/><b>Travel time=</b> " + 
    > computeTotalDuration(directionsDisplay.getDirections()) + " <br/> " + 
    > route.legs[0].end_location); 
    >       infowindow.open(map, this); 
    >      }); 
    >     } else { 
    >      window.alert('Directions request failed due to ' + status); 
    >     } 
    >     directionsDisplay.setDirections(response); 
    >    }); 
    >   }