تمت ترجمة هذه الصفحة بواسطة Cloud Translation API‏.

محاذاة إلى الطرق

تأخذ Roads API ما يصل إلى 100 نقطة من نقاط نظام تحديد المواقع العالمي (GPS) مجمّعة على طول المسار، وتعرض مجموعة مماثلة من البيانات، مع ربط النقاط بالطرق الأكثر احتمالاً التي تسلكها المركبة. اختياريًا، يمكنك طلب إضافة النقاط، ما يؤدي إلى إنشاء مسار يتبع بسلاسة شكل الطريق الهندسي.

الكائن Requests

يجب إرسال طلب المحاذاة إلى الطريق عبر HTTPS، كما يجب أن يتخذ الشكل التالي:

https://roads.googleapis.com/v1/snapToRoads?parameters&key=YOUR_API_KEY

Required parameters

path
The path to be snapped. The path parameter accepts a list of latitude/longitude pairs. Latitude and longitude values should be separated by commas. Coordinates should be separated by the pipe character: "|". For example: path=60.170880,24.942795|60.170879,24.942796|60.170877,24.942796.
Note: The snapping algorithm works best for points that are not too far apart. If you observe odd snapping behavior, try creating paths that have points closer together. To ensure the best snap-to-road quality, you should aim to provide paths on which consecutive pairs of points are within 300m of each other. This will also help in handling any isolated, long jumps between consecutive points caused by GPS signal loss, or noise.

Optional parameters

interpolate
Whether to interpolate a path to include all points forming the full road-geometry. When true, additional interpolated points will also be returned, resulting in a path that smoothly follows the geometry of the road, even around corners and through tunnels. Interpolated paths will most likely contain more points than the original path. Defaults to false.

أمثلة

سيقوم الطلب التالي بالتقاط النقاط المحددة إلى هندسة الطريق. تتبع هذه المجموعة الخاصة من البيانات طريقًا دائريًا. ويضمن ضبط interpolate=true أن يتطابق الشكل الهندسي الناتج مع انحناء الطريق. باستخدام interpolate=false، سيظل المسار المقطوع يتبع الطريق، إلا أن الخط المتعدد الناتج لن يكون سلسًا.

عنوان URL

https://roads.googleapis.com/v1/snapToRoads
  ?interpolate=true
  &path=-35.27801%2C149.12958%7C-35.28032%2C149.12907%7C-35.28099%2C149.12929%7C-35.28144%2C149.12984%7C-35.28194%2C149.13003%7C-35.28282%2C149.12956%7C-35.28302%2C149.12881%7C-35.28473%2C149.12836
  &key=YOUR_API_KEY

أمر cURL

curl -L -X GET 'https://roads.googleapis.com/v1/snapToRoads?path=-35.27801%2C149.12958%7C-35.28032%2C149.12907%7C-35.28099%2C149.12929%7C-35.28144%2C149.12984%7C-35.28194%2C149.13003%7C-35.28282%2C149.12956%7C-35.28302%2C149.12881%7C-35.28473%2C149.12836&interpolate=true&key=YOUR_API_KEY'

الردود

مع كل طلب صالح، ستعرض Roads API استجابة بالتنسيق المُشار إليه في عنوان URL للطلب، مثل استجابة JSON التالية.

{
  "snappedPoints":
    [
      {
        "location":
          { "latitude": -35.27800489993019, "longitude": 149.129531998742 },
        "originalIndex": 0,
        "placeId": "ChIJr_xl0GdNFmsRsUtUbW7qABM",
      },
      {
        "location":
          { "latitude": -35.2784195, "longitude": 149.12946589999999 },
        "placeId": "ChIJr_xl0GdNFmsRsUtUbW7qABM",
      },
      {
        "location":
          { "latitude": -35.2784195, "longitude": 149.12946589999999 },
        "placeId": "ChIJ6aXGemhNFmsRZE_zHqhmrG4",
      },
      {
        "location":
          { "latitude": -35.2792731, "longitude": 149.12933809999998 },
        "placeId": "ChIJ6aXGemhNFmsRZE_zHqhmrG4",
      },
      {
        "location":
          { "latitude": -35.2792731, "longitude": 149.12933809999998 },
        "placeId": "ChIJTcTdZ2hNFmsRXokM4mWCWfk",
      },
      {
        "location": { "latitude": -35.279557, "longitude": 149.1292973 },
        "placeId": "ChIJTcTdZ2hNFmsRXokM4mWCWfk",
      },
      {
        "location": { "latitude": -35.279557, "longitude": 149.1292973 },
        "placeId": "ChIJiUfNQmhNFmsRSsAI-1m6y1g",
      },
      {
        "location":
          { "latitude": -35.279610999999996, "longitude": 149.1292889 },
        "placeId": "ChIJiUfNQmhNFmsRSsAI-1m6y1g",
      },
      {
        "location": { "latitude": -35.2796484, "longitude": 149.1292791 },
        "placeId": "ChIJiUfNQmhNFmsRSsAI-1m6y1g",
      },
      {
        "location": { "latitude": -35.2796484, "longitude": 149.1292791 },
        "placeId": "ChIJ_RyFQ2hNFmsRoHJAbW7qABM",
      },
      {
        "location":
          { "latitude": -35.279947299999996, "longitude": 149.1291894 },
        "placeId": "ChIJ_RyFQ2hNFmsRoHJAbW7qABM",
      },
      {
        "location":
          { "latitude": -35.279947299999996, "longitude": 149.1291894 },
        "placeId": "ChIJOyypT2hNFmsRZBtscGL0htw",
      },
      {
        "location":
          { "latitude": -35.280323564795005, "longitude": 149.1290903128365 },
        "originalIndex": 1,
        "placeId": "ChIJOyypT2hNFmsRZBtscGL0htw",
      },
      {
        "location":
          { "latitude": -35.2803426, "longitude": 149.12908529999999 },
        "placeId": "ChIJOyypT2hNFmsRZBtscGL0htw",
      },
      {
        "location":
          { "latitude": -35.2803426, "longitude": 149.12908529999999 },
        "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc",
      },
      {
        "location":
          { "latitude": -35.280409899999995, "longitude": 149.1290699 },
        "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc",
      },
      {
        "location": { "latitude": -35.28048179999999, "longitude": 149.129062 },
        "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc",
      },
      {
        "location": { "latitude": -35.2805541, "longitude": 149.1290623 },
        "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc",
      },
      {
        "location": { "latitude": -35.280626, "longitude": 149.1290712 },
        "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc",
      },
      {
        "location": { "latitude": -35.280626, "longitude": 149.1290712 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location":
          { "latitude": -35.280695099999996, "longitude": 149.12908489999998 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location": { "latitude": -35.2807629, "longitude": 149.1291046 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location": { "latitude": -35.2808294, "longitude": 149.1291306 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location": { "latitude": -35.2809064, "longitude": 149.1291693 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location":
          { "latitude": -35.280968200000004, "longitude": 149.129208 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location":
          { "latitude": -35.28101395754623, "longitude": 149.1292430025548 },
        "originalIndex": 2,
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location":
          { "latitude": -35.28103840000001, "longitude": 149.1292617 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location": { "latitude": -35.2810936, "longitude": 149.1293121 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location": { "latitude": -35.2810979, "longitude": 149.1293176 },
        "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4",
      },
      {
        "location": { "latitude": -35.2810979, "longitude": 149.1293176 },
        "placeId": "ChIJpYMSrmlNFmsRXkCoIkZxgBg",
      },
      {
        "location":
          { "latitude": -35.281152399999996, "longitude": 149.1294256 },
        "placeId": "ChIJpYMSrmlNFmsRXkCoIkZxgBg",
      },
      {
        "location":
          { "latitude": -35.281152399999996, "longitude": 149.1294256 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2811784, "longitude": 149.1294706 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2812258, "longitude": 149.1295413 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.2812771, "longitude": 149.12960759999999 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.281332, "longitude": 149.1296695 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.2813904, "longitude": 149.12972670000002 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.281451700000005, "longitude": 149.1297788 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.28146506991143, "longitude": 149.12978858234607 },
        "originalIndex": 3,
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.28151580000001, "longitude": 149.1298257 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.28158259999999, "longitude": 149.129867 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.281666099999995, "longitude": 149.1299091 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2817377, "longitude": 149.1299379 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.281810899999996, "longitude": 149.1299602 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.281884999999996, "longitude": 149.1299765 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.28194399606459, "longitude": 149.1299842294294 },
        "originalIndex": 4,
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.281959799999996, "longitude": 149.12998629999998 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.282035199999996, "longitude": 149.1299895 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2821254, "longitude": 149.1299851 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location":
          { "latitude": -35.282199999999996, "longitude": 149.1299743 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2822739, "longitude": 149.1299573 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2823468, "longitude": 149.129934 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2824178, "longitude": 149.1299043 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2824379, "longitude": 149.1298945 },
        "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA",
      },
      {
        "location": { "latitude": -35.2824379, "longitude": 149.1298945 },
        "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0",
      },
      {
        "location":
          { "latitude": -35.282472999999996, "longitude": 149.1298835 },
        "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0",
      },
      {
        "location": { "latitude": -35.2825375, "longitude": 149.1298525 },
        "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0",
      },
      {
        "location":
          { "latitude": -35.28257309999999, "longitude": 149.1298319 },
        "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0",
      },
      {
        "location":
          { "latitude": -35.28257309999999, "longitude": 149.1298319 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location":
          { "latitude": -35.282665400000006, "longitude": 149.12974459999998 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location":
          { "latitude": -35.28274030000001, "longitude": 149.1296645 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location":
          { "latitude": -35.282809799999995, "longitude": 149.12957799999998 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location":
          { "latitude": -35.28282136229385, "longitude": 149.12956142620385 },
        "originalIndex": 5,
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location": { "latitude": -35.2828744, "longitude": 149.1294854 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location":
          { "latitude": -35.282922299999996, "longitude": 149.1294044 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location":
          { "latitude": -35.282931500000004, "longitude": 149.1293876 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location": { "latitude": -35.2830263, "longitude": 149.1291788 },
        "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc",
      },
      {
        "location": { "latitude": -35.2830263, "longitude": 149.1291788 },
        "placeId": "ChIJyd3JiWlNFmsR9RUq2ySTTZQ",
      },
      {
        "location": { "latitude": -35.283054, "longitude": 149.1290996 },
        "placeId": "ChIJyd3JiWlNFmsR9RUq2ySTTZQ",
      },
      {
        "location": { "latitude": -35.2830794, "longitude": 149.1290094 },
        "placeId": "ChIJyd3JiWlNFmsR9RUq2ySTTZQ",
      },
      {
        "location": { "latitude": -35.2830794, "longitude": 149.1290094 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.28313383700836, "longitude": 149.12893500604946 },
        "originalIndex": 6,
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.283134499999996, "longitude": 149.12893409999998 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.283190399999995, "longitude": 149.1288668 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location": { "latitude": -35.2832503, "longitude": 149.1288041 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location": { "latitude": -35.2833133, "longitude": 149.1287463 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location": { "latitude": -35.2833794, "longitude": 149.128694 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.283448299999996, "longitude": 149.128647 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location": { "latitude": -35.2835199, "longitude": 149.1286054 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location": { "latitude": -35.2835934, "longitude": 149.1285699 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.283668899999995, "longitude": 149.12854059999998 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.28372649999999, "longitude": 149.1285237 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.28386179999999, "longitude": 149.12849319999998 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location": { "latitude": -35.2839978, "longitude": 149.1284682 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.2840205, "longitude": 149.12846779999998 },
        "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A",
      },
      {
        "location":
          { "latitude": -35.2840205, "longitude": 149.12846779999998 },
        "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E",
      },
      {
        "location":
          { "latitude": -35.2840524, "longitude": 149.12845969999998 },
        "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E",
      },
      {
        "location":
          { "latitude": -35.284341500000004, "longitude": 149.1284124 },
        "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E",
      },
      {
        "location": { "latitude": -35.2843875, "longitude": 149.1284034 },
        "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E",
      },
      {
        "location": { "latitude": -35.2843875, "longitude": 149.1284034 },
        "placeId": "ChIJVx7Ta2pNFmsRx9OI9CnN5tI",
      },
      {
        "location": { "latitude": -35.2845916, "longitude": 149.1283726 },
        "placeId": "ChIJVx7Ta2pNFmsRx9OI9CnN5tI",
      },
      {
        "location": { "latitude": -35.2845916, "longitude": 149.1283726 },
        "placeId": "ChIJtWxAZmpNFmsRlbUCkc6VtnA",
      },
      {
        "location":
          { "latitude": -35.28459730000001, "longitude": 149.1283703 },
        "placeId": "ChIJtWxAZmpNFmsRlbUCkc6VtnA",
      },
      {
        "location":
          { "latitude": -35.284728747199374, "longitude": 149.12834860726772 },
        "originalIndex": 7,
        "placeId": "ChIJtWxAZmpNFmsRlbUCkc6VtnA",
      },
    ],
}

تستخدم الاستجابة المخطط التالي.

SnapToRoadsResponse

Field	Required	Type	Description
`snappedPoints`	optional	Array<SnappedPoint>	An array of snapped points. See SnappedPoint for more information.
`warningMessage`	optional	string	A string containing a user-visible warning.

SnappedPoint

Field	Required	Type	Description
`location`	required	LatitudeLongitudeLiteral	See LatitudeLongitudeLiteral for more information.
`placeId`	required	string	A unique identifier for a place. All place IDs returned by the Roads API correspond to road segments.
`originalIndex`	optional	number	An integer that indicates the corresponding value in the original request. Each value in the request should map to a snapped value in the response. However, if you've set interpolate=true or if you're using nearest roads, then it's possible that the response will contain more coordinates than the request. Interpolated values will not have an `originalIndex`. These values are indexed from `0`, so a point with an originalIndex of `4` will be the snapped value of the 5th latitude/longitude passed to the path parameter. Nearest Roads points may contain several points for single coordinates with differing location or placeId.

LatitudeLongitudeLiteral

An object describing a specific location with Latitude and Longitude in decimal degrees.

Field	Required	Type	Description
`latitude`	required	number	Latitude in decimal degrees
`longitude`	required	number	Longitude in decimal degrees

الإصدار التجريبي

انقر حولك على الخريطة لإنشاء مسار للمركبة. ويُرجى العِلم بأنّه إذا كانت النقاط متباعدة جدًا، قد لا تظهر بشكل صحيح.
يمكنك النقر مرّتين لتحريك المسار على الطريق.

اطّلِع على هذا المثال في ملء الشاشة.

JavaScript

var apiKey = 'YOUR_API_KEY_HERE';

var map;
var drawingManager;
var placeIdArray = [];
var polylines = [];
var snappedCoordinates = [];

function initialize() {
  var mapOptions = {
    zoom: 17,
    center: {lat: -33.8667, lng: 151.1955,}
  };
  map = new google.maps.Map(document.getElementById('map'), mapOptions);

  // Adds a Places search box. Searching for a place will center the map on that
  // location.
  map.controls[google.maps.ControlPosition.RIGHT_TOP].push(
      document.getElementById('bar'));
  var autocomplete = new google.maps.places.Autocomplete(
      document.getElementById('autoc'));
  autocomplete.bindTo('bounds', map);
  autocomplete.addListener('place_changed', function() {
    var place = autocomplete.getPlace();
    if (place.geometry.viewport) {
      map.fitBounds(place.geometry.viewport);
    } else {
      map.setCenter(place.geometry.location);
      map.setZoom(17);
    }
  });

  // Enables the polyline drawing control. Click on the map to start drawing a
  // polyline. Each click will add a new vertice. Double-click to stop drawing.
  drawingManager = new google.maps.drawing.DrawingManager({
    drawingMode: google.maps.drawing.OverlayType.POLYLINE,
    drawingControl: true,
    drawingControlOptions: {
      position: google.maps.ControlPosition.TOP_CENTER,
      drawingModes: [
        google.maps.drawing.OverlayType.POLYLINE
      ]
    },
    polylineOptions: {
      strokeColor: '#696969',
      strokeWeight: 2,
      strokeOpacity: 0.3,
    }
  });
  drawingManager.setMap(map);

  // Snap-to-road when the polyline is completed.
  drawingManager.addListener('polylinecomplete', function(poly) {
    var path = poly.getPath();
    polylines.push(poly);
    placeIdArray = [];
    runSnapToRoad(path);
  });


  // Clear button. Click to remove all polylines.
  document.getElementById('clear').addEventListener('click', function(event) {
    event.preventDefault();
    for (var i = 0; i < polylines.length; ++i) {
      polylines[i].setMap(null);
    }
    polylines = [];
    return false;
  });
}

// Snap a user-created polyline to roads and draw the snapped path
function runSnapToRoad(path) {
  var pathValues = [];
  for (var i = 0; i < path.getLength(); i++) {
    pathValues.push(path.getAt(i).toUrlValue());
  }

  $.get('https://roads.googleapis.com/v1/snapToRoads', {
    interpolate: true,
    key: apiKey,
    path: pathValues.join('|')
  }, function(data) {
    processSnapToRoadResponse(data);
    drawSnappedPolyline();
  });
}

// Store snapped polyline returned by the snap-to-road service.
function processSnapToRoadResponse(data) {
  snappedCoordinates = [];
  placeIdArray = [];
  for (var i = 0; i < data.snappedPoints.length; i++) {
    var latlng = new google.maps.LatLng(
        data.snappedPoints[i].location.latitude,
        data.snappedPoints[i].location.longitude);
    snappedCoordinates.push(latlng);
    placeIdArray.push(data.snappedPoints[i].placeId);
  }
}

// Draws the snapped polyline (after processing snap-to-road response).
function drawSnappedPolyline() {
  var snappedPolyline = new google.maps.Polyline({
    path: snappedCoordinates,
    strokeColor: '#add8e6',
    strokeWeight: 4,
    strokeOpacity: 0.9,
  });

  snappedPolyline.setMap(map);
  polylines.push(snappedPolyline);
}

$(window).load(initialize);

JavaScript + HTML

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Roads API Demo</title>
    <style>
      html, body, #map {
        height: 100%;
        margin: 0px;
        padding: 0px
      }

      #panel {
        position: absolute;
        top: 5px;
        left: 50%;
        margin-left: -180px;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
      }

      #bar {
        width: 240px;
        background-color: rgba(255, 255, 255, 0.75);
        margin: 8px;
        padding: 4px;
        border-radius: 4px;
      }

      #autoc {
        width: 100%;
        box-sizing: border-box;
      }
    </style>

    <script src="https://www.gstatic.com/external_hosted/jquery2.min.js"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?libraries=drawing,places&key=YOUR_API_KEY"></script>
    <script>
var apiKey = 'YOUR_API_KEY_HERE';

var map;
var drawingManager;
var placeIdArray = [];
var polylines = [];
var snappedCoordinates = [];

function initialize() {
  var mapOptions = {
    zoom: 17,
    center: {lat: -33.8667, lng: 151.1955,}
  };
  map = new google.maps.Map(document.getElementById('map'), mapOptions);

  // Adds a Places search box. Searching for a place will center the map on that
  // location.
  map.controls[google.maps.ControlPosition.RIGHT_TOP].push(
      document.getElementById('bar'));
  var autocomplete = new google.maps.places.Autocomplete(
      document.getElementById('autoc'));
  autocomplete.bindTo('bounds', map);
  autocomplete.addListener('place_changed', function() {
    var place = autocomplete.getPlace();
    if (place.geometry.viewport) {
      map.fitBounds(place.geometry.viewport);
    } else {
      map.setCenter(place.geometry.location);
      map.setZoom(17);
    }
  });

  // Enables the polyline drawing control. Click on the map to start drawing a
  // polyline. Each click will add a new vertice. Double-click to stop drawing.
  drawingManager = new google.maps.drawing.DrawingManager({
    drawingMode: google.maps.drawing.OverlayType.POLYLINE,
    drawingControl: true,
    drawingControlOptions: {
      position: google.maps.ControlPosition.TOP_CENTER,
      drawingModes: [
        google.maps.drawing.OverlayType.POLYLINE
      ]
    },
    polylineOptions: {
      strokeColor: '#696969',
      strokeWeight: 2,
      strokeOpacity: 0.3,
    }
  });
  drawingManager.setMap(map);

  // Snap-to-road when the polyline is completed.
  drawingManager.addListener('polylinecomplete', function(poly) {
    var path = poly.getPath();
    polylines.push(poly);
    placeIdArray = [];
    runSnapToRoad(path);
  });


  // Clear button. Click to remove all polylines.
  document.getElementById('clear').addEventListener('click', function(event) {
    event.preventDefault();
    for (var i = 0; i < polylines.length; ++i) {
      polylines[i].setMap(null);
    }
    polylines = [];
    return false;
  });
}

// Snap a user-created polyline to roads and draw the snapped path
function runSnapToRoad(path) {
  var pathValues = [];
  for (var i = 0; i < path.getLength(); i++) {
    pathValues.push(path.getAt(i).toUrlValue());
  }

  $.get('https://roads.googleapis.com/v1/snapToRoads', {
    interpolate: true,
    key: apiKey,
    path: pathValues.join('|')
  }, function(data) {
    processSnapToRoadResponse(data);
    drawSnappedPolyline();
  });
}

// Store snapped polyline returned by the snap-to-road service.
function processSnapToRoadResponse(data) {
  snappedCoordinates = [];
  placeIdArray = [];
  for (var i = 0; i < data.snappedPoints.length; i++) {
    var latlng = new google.maps.LatLng(
        data.snappedPoints[i].location.latitude,
        data.snappedPoints[i].location.longitude);
    snappedCoordinates.push(latlng);
    placeIdArray.push(data.snappedPoints[i].placeId);
  }
}

// Draws the snapped polyline (after processing snap-to-road response).
function drawSnappedPolyline() {
  var snappedPolyline = new google.maps.Polyline({
    path: snappedCoordinates,
    strokeColor: '#add8e6',
    strokeWeight: 4,
    strokeOpacity: 0.9,
  });

  snappedPolyline.setMap(map);
  polylines.push(snappedPolyline);
}

$(window).load(initialize);
    </script>
  </head>

  <body>
    <div id="map"></div>
    <div id="bar">
      <p class="auto"><input type="text" id="autoc"/></p>
      <p><a id="clear" href="#">Click here</a> to clear map.</p>
    </div>
  </body>
</html>

محاذاة إلى الطرق

الكائن Requests

Required parameters

path

Optional parameters

interpolate

أمثلة

عنوان URL

أمر cURL

الردود

SnapToRoadsResponse

`snappedPoints`

`warningMessage`

SnappedPoint

`location`

`placeId`

`originalIndex`

LatitudeLongitudeLiteral

`latitude`

`longitude`

الإصدار التجريبي

JavaScript

JavaScript + HTML