我需要绘制路径,但路上有航班。所以我想在my example中制作类似的东西,但是我需要在手册的页面初始化时绘制它。但我不知道如何将这两种方式混合绘制地图(Polilyne和Snap到道路)。它需要像一个lat lng数组一样工作:
var points = new google.maps.MVCArray([
new google.maps.LatLng(39.9042, 116.407396),
new google.maps.LatLng(34.341574, 108.93977),
new google.maps.LatLng(31.23039, 121.473702),
new google.maps.LatLng(31.298974, 120.585289),
new google.maps.LatLng(30.274084, 120.15507),
new google.maps.LatLng(25.234479, 110.179953),
new google.maps.LatLng(23.12911, 113.264385),
new google.maps.LatLng(22.543096, 114.057865),
new google.maps.LatLng(22.279991, 114.158798)
]);
这是我的代码: 如果单击地图,它会将捕捉绘制到道路路径,如果按住Shift键并单击它将绘制折线。
我需要以某种方式更新代码,如果lat lng为快速道路返回ZERO_RESULTS,请使用折线恢复道路绘图,就像在我的代码示例中一样。
这是我想要做的: map example
感谢您的帮助
var map, path = new google.maps.MVCArray(),
service = new google.maps.DirectionsService(),
shiftPressed = false,
poly;
google.maps.event.addDomListener(document, "keydown", function(e) {
shiftPressed = e.shiftKey;
});
google.maps.event.addDomListener(document, "keyup", function(e) {
shiftPressed = e.shiftKey;
});
function Init() {
var myOptions = {
zoom: 17,
center: new google.maps.LatLng(37.2008385157313, -93.2812106609344),
mapTypeId: google.maps.MapTypeId.HYBRID,
mapTypeControlOptions: {
mapTypeIds: [google.maps.MapTypeId.ROADMAP, google.maps.MapTypeId.HYBRID, google.maps.MapTypeId.SATELLITE]
},
disableDoubleClickZoom: true,
scrollwheel: false,
draggableCursor: "crosshair"
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
poly = new google.maps.Polyline({
map: map
});
google.maps.event.addListener(map, "click", function(evt) {
if (shiftPressed || path.getLength() === 0) {
path.push(evt.latLng);
if (path.getLength() === 1) {
poly.setPath(path);
}
} else {
service.route({
origin: path.getAt(path.getLength() - 1),
destination: evt.latLng,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
}
});
}
});
}
&#13;
html,
body {
margin: 0;
width: 100%;
height: 100%;
}
#map_canvas {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
&#13;
<body onload="Init()">
<div id="map_canvas"></div>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBjkJC-gvn3j6T3gvd3aE2vbUS5qTEhi5s"></script>
</body>
&#13;
答案 0 :(得分:0)
如果路线请求失败,请将点击的点添加到折线。
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
} else {
console.log("directions request failed:"+status);
// add point to polyline (makes a straight line segment
path.push(evt.latLng);
}
代码段
var map, path = new google.maps.MVCArray(),
service = new google.maps.DirectionsService(),
shiftPressed = false,
poly;
google.maps.event.addDomListener(document, "keydown", function(e) {
shiftPressed = e.shiftKey;
});
google.maps.event.addDomListener(document, "keyup", function(e) {
shiftPressed = e.shiftKey;
});
function Init() {
var myOptions = {
zoom: 7,
center: new google.maps.LatLng(37.2008385157313, -93.2812106609344),
mapTypeId: google.maps.MapTypeId.HYBRID,
mapTypeControlOptions: {
mapTypeIds: [google.maps.MapTypeId.ROADMAP, google.maps.MapTypeId.HYBRID, google.maps.MapTypeId.SATELLITE]
},
disableDoubleClickZoom: true,
scrollwheel: false,
draggableCursor: "crosshair"
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
poly = new google.maps.Polyline({
map: map
});
google.maps.event.addListener(map, "click", function(evt) {
if (shiftPressed || path.getLength() === 0) {
path.push(evt.latLng);
if (path.getLength() === 1) {
poly.setPath(path);
}
} else {
service.route({
origin: path.getAt(path.getLength() - 1),
destination: evt.latLng,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
} else {
console.log("directions request failed:" + status);
// create polyline
path.push(evt.latLng);
}
});
}
});
}
html,
body {
margin: 0;
width: 100%;
height: 100%;
}
#map_canvas {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
<body onload="Init()">
<div id="map_canvas"></div>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBjkJC-gvn3j6T3gvd3aE2vbUS5qTEhi5s"></script>
</body>
答案 1 :(得分:0)
这就是我需要的,感谢所有人的帮助!
代码示例:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Polylines</title>
<style>
#map {
height: 100%;
}
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
function initialize() {
var pos = new google.maps.LatLng(47.229808, -1.560401);
var myOptions = {
zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var bounds = new google.maps.LatLngBounds();
var map = new google.maps.Map(document.getElementById('map'), myOptions);
var service = new google.maps.DirectionsService();
var path = [];
var cur = 1;
var trip = [
new google.maps.LatLng(22.396428,114.109497),
new google.maps.LatLng(13.756331,100.501765),
new google.maps.LatLng(1.352083,103.819836),
new google.maps.LatLng(-6.17511,106.865039),
new google.maps.LatLng(-6.917464,107.619123),
new google.maps.LatLng(-7.79558,110.36949),
new google.maps.LatLng(-8.409518,115.188916),
new google.maps.LatLng(22.396428,114.109497),
];
var poly = new google.maps.Polyline({
strokeColor: "blue",
strokeOpacity: 1.0,
strokeWeight: 2
});
function build() {
if (!trip[cur] || !trip[cur - 1]) {
// build map
poly.setPath(path);
map.fitBounds(bounds);
return;
}
bounds.extend(trip[cur]);
service.route({
origin: trip[cur - 1],
destination: trip[cur],
travelMode: google.maps.DirectionsTravelMode.DRIVING
},
function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
} else {
path.push(trip[cur]);
}
cur++;
build();
});
}
bounds.extend(trip[0]);
build();
poly.setMap(map);
};
window.onload = function() {
initialize();
};
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBjkJC-gvn3j6T3gvd3aE2vbUS5qTEhi5s">
</script>
</body>
</html>