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我正在使用Google Maps JavaScript API，並希望在同一地圖上顯示兩條路線（每條路線都有不同的折線樣式）。Google Maps JavaScript API在同一地圖上顯示兩條具有不同折線樣式的路線
第一條路線是駕駛模式，起止位置分別是用戶輸入的地址和用戶選擇的停車場。此路線將顯示爲一條實線。
第二條路線是走路模式。此路線從停車庫到定義爲centerOfMap的同一地圖上的另一個靜態位置。此路線將顯示爲帶圓圈符號的虛線。
所需的輸出：
// Set the driving route line
var drivingPathLine = new google.maps.Polyline({
strokeColor: '#FF0000',
strokeOpacity: 0,
fillOpacity: 0
});
// Set the walking route line
var walkingLineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
fillOpacity: 1,
scale: 3
};
var walkingPathLine = new google.maps.Polyline({
strokeColor: '#0eb7f6',
strokeOpacity: 0,
fillOpacity: 0,
icons: [{
icon: walkingLineSymbol,
offset: '0',
repeat: '10px'
}],
});
directionsDisplay = new google.maps.DirectionsRenderer({suppressMarkers:true,polylineOptions: walkingPathLine});
directionsService = new google.maps.DirectionsService;
的問題是，代碼被當前寫入的方式，僅在第二路線（路線行走）被顯示在地圖上。我知道我需要在getDirectionsHere方法中放置多段線變量和directionsRenderer，但不知道如何。任何指導表示讚賞！
如何在同一地圖上顯示兩條路線，並且每條路線的樣式都不相同（一條是實線折線，另一條是點線折線）？
<!DOCTYPE html>
<html>
<body>
<style>
html {
\t height: 100%;
}
body {
\t height: 100%;
\t margin: 0;
\t padding: 0;
\t font-size: 26px;
font-family: "filson-soft";
}
#map_container {
height: 700px;
}
#map {
\t width: 100%;
\t height: 100%;
\t float: left;
}
</style>
<div id="map_container">
<div id="map"></div>
</div>
<script>
google.maps.event.addDomListener(window, "load", initMap);
var centerOfMap;
var geocoder;
var map;
var locations;
var gmarkers = [];
var search_lat;
var search_lng;
var infowindow;
var directionsDisplay;
var directionsService;
function initMap() {
gmarkers = [];
// Set the driving route line
var drivingPathLine = new google.maps.Polyline({
strokeColor: '#FF0000',
strokeOpacity: 0,
fillOpacity: 0
});
// Set the walking route line
var walkingLineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
fillOpacity: 1,
scale: 3
};
var walkingPathLine = new google.maps.Polyline({
strokeColor: '#0eb7f6',
strokeOpacity: 0,
fillOpacity: 0,
icons: [{
icon: walkingLineSymbol,
offset: '0',
repeat: '10px'
}],
});
directionsDisplay = new google.maps.DirectionsRenderer({suppressMarkers:true,polylineOptions: walkingPathLine});
directionsService = new google.maps.DirectionsService;
geocoder = new google.maps.Geocoder();
// SET THE CENTER OF THE MAP
centerOfMap = {
lat: 38.5803844,
lng: -121.50024189999999
};
// ADD THE MAP AND SET THE MAP OPTIONS
map = new google.maps.Map(document.getElementById('map'), {
zoom: 16,
center: centerOfMap
});
var center_marker = new google.maps.Marker({
position: centerOfMap,
icon: 'http://maps.google.com/mapfiles/ms/micons/orange-dot.png',
map: map
});
center_marker.addListener('click', function() {
var gOneContent = '<div id="info_window">' +
'<h2>Center Of Map</h2>' +
'<div style="clear:both;height:40px;">' +
'<a href="#" id="getDirectionsButton" onclick="getDirectionsHere(' + centerOfMap.lat + ', ' + centerOfMap.lng + ');">Get Directions</a>' +
'</div>';
infowindow.setContent(gOneContent);
infowindow.open(map, center_marker);
map.setCenter(marker.getPosition());
});
locations = [
["Joes Parking Garage","1001 6th St","Sacramento","CA","95814","38.58205649","-121.49857521","parking_garage"],
["Mikes Parking Garage","918 5th St","Sacramento","CA","95814","38.5826939","-121.50012016","parking_garage"]
];
infowindow = new google.maps.InfoWindow();
var marker, i;
var bounds = new google.maps.LatLngBounds();
console.log("found " + locations.length + " locations<br>");
for (i = 0; i < locations.length; i++) {
var icon_image = 'http://maps.google.com/mapfiles/ms/micons/parkinglot.png';
var coordStr = locations[i][5] + "," + locations[i][6];
\t var coords = coordStr.split(",");
\t var pt = new google.maps.LatLng(parseFloat(coords[0]),parseFloat(coords[1]));
bounds.extend(pt);
var location_name = locations[i][0];
var location_address = locations[i][1] + ', ' + locations[i][2] + ', ' + locations[i][3] + ' ' + locations[i][4];
marker = new google.maps.Marker({
position: pt,
animation: google.maps.Animation.DROP,
icon: icon_image,
map: map,
title: location_name,
address: location_address
});
gmarkers.push(marker);
google.maps.event.addListener(marker, 'click', (function (marker, i) {
return function() {
var content = '<div id="info_window">'
+ '<h2 style="margin:0;">' + locations[i][0] + '</h2>'
+ locations[i][1] + ', ' + locations[i][2] + ', ' + locations[i][3] + ' ' + locations[i][4]
+ '<div style="clear:both;height:40px;">'
+ '<a href="#" id="getDirectionsButton" onclick="getDirectionsHere(' + locations[i][5] + ', ' + locations[i][6] + ');">Get Directions</a>';
content += '</div>';
content += '</div>';
infowindow.setContent(content);
infowindow.open(map, marker);
map.setCenter(marker.getPosition());
}
})(marker, i));
}
}
function getDirectionsHere(lat,lng) {
// GET THE SEARCH ADDRESS
var address = 'Carmichael, CA';
console.log('search address: ' + address);
if (address) {
geocoder.geocode({ 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
search_lat = results[0].geometry.location.lat();
search_lng = results[0].geometry.location.lng();
console.log('search FROM lat: ' + search_lat + ' search FROM lng: ' + search_lng);
console.log('search TO lat: ' + lat + ' search TO lng: ' + lng);
calculateAndDisplayRoute(directionsService, directionsDisplay);
} else {
alert("Geocode was not successful for the following reason: " + status);
}
});
// CHANGE THE ZOOM LEVEL AFTER THE USER SEARCHES TO FIT THE ROUTE WITHOUT SCROLLING
map.setOptions({ minZoom: 10, maxZoom: 17 });
map.setZoom(10);
// INITIALIZE GOOGLE MAPS DIRECTIONS SERVICE
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('directions'));
calculateAndDisplayRoute(directionsService, directionsDisplay);
// CALCULATE THE FIRST ROUTE AND DIRECTIONS (DRIVING) BASED ON ADDRESS
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
console.log('search address coordinates: ' + search_lat + ', ' + search_lng);
var selectedMode = document.getElementById('mode').value;
directionsService.route({
origin: {lat: search_lat, lng: search_lng},
destination: {lat: lat, lng: lng},
travelMode: "DRIVING"
}, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
// CALCULATE THE SECOND ROUTE AND DIRECTIONS (WALKING) BETWEEN PARKINGG GARAGE AND FINAL DESTINATION "CENTER OF MAP"
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var selectedMode = 'WALKING';
directionsService.route({
origin: {lat: lat, lng: lng},
destination: {lat: centerOfMap.lat, lng: centerOfMap.lng},
travelMode: google.maps.TravelMode[selectedMode]
}, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
} else {
getLocationPopup();
return;
}
}
</script>
<script async defer src="https://maps.googleapis.com/maps/api/js?sensor=false&libraries=geometry,places&callback=initMap"></script>
</body>
</html>
<script type="text/javascript">
</script>
</body>
</html>
[您如何更改Google地圖v3方向上的虛線顏色]（http://stackoverflow.com/questions/35502342/how-do-you-change-the-color-of-the -dotted-line-google-map-v3-directions） – geocodezip
這條路線應該怎麼走？駕車路線的起點在哪裏？我假設它開始 - 駕駛方向 - 停車 - 行走方向 - 結束/「地圖標記的中心」。目前，你有兩個具有相同名稱的功能，這將不起作用，你需要做一個功能來做兩件不同的事情（走路/行車路線）或兩個不同名稱的功能。 – geocodezip
你的另一個問題是你的駕駛方向折線是透明的（strokeOpacity：0）。 – geocodezip