问题是当我搜索位置时,在搜索到的位置上找不到多边形。
下图中的示例。
如何在搜索到的位置上设置多边形的位置?
我在此脚本中设置了多边形,并将其设置为默认位置。每当我搜索位置多边形时,都应将其放置在此处,以便我可以将该位置的纬度设置为纬度。 在第二张图片中,我缩小了地图,找到了默认位置的多边形。多边形应移至搜索位置。
<script>
function initAutocomplete() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: 30.3753, lng: 69.3451},
zoom: 6,
mapTypeId: 'roadmap'
});
// Create the search box and link it to the UI element.
var input = document.getElementById('search_location');
var searchBox = new google.maps.places.SearchBox(input);
// map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
// Bias the SearchBox results towards current map's viewport.
map.addListener('bounds_changed', function() {
searchBox.setBounds(map.getBounds());
});
var markers = [];
// Listen for the event fired when the user selects a prediction and retrieve
// more details for that place.
searchBox.addListener('places_changed', function() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
markers = [];
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
if (!place.geometry) {
console.log("Returned place contains no geometry");
return;
}
var icon = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
// Create a marker for each place.
markers.push(new google.maps.Marker({
map: map,
icon: icon,
title: place.name,
position: place.geometry.location
}));
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
var arrCoords = [
new google.maps.LatLng(32.3753, 64.3451),
new google.maps.LatLng(30.3753, 66.3451),
new google.maps.LatLng(30.3753, 65.3451),
new google.maps.LatLng(29.3753, 63.3451),
// new google.maps.LatLng(51.477654, -0.002192)
];
var polygon = new google.maps.Polygon({
editable: true,
paths: arrCoords,
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
map: map,
draggable: true,
geodesic: true,
});
google.maps.event.addListener(polygon, 'dragend', function (evt) {
console.log(evt.latLng.lat(), '--', evt.latLng.lng());
});
// google.maps.event.addListener(polygon.getPath(), 'insert_at', function(index, obj) {
// console.log('Vertex removed from inner path.');
// console.log(obj.lat() ,'--', obj.lng() );
// });
google.maps.event.addListener(polygon.getPath(), 'set_at', function (index, obj) {
console.log('Vertex moved on outer path.');
console.log(obj.lat(), '--', obj.lng());
var Array = [];
Array.push(obj.lat(), obj.lng(), obj.lat(), obj.lng());
$('#lat_long').val(JSON.stringify(Array));
var value = $('#lat_long').val();
value = JSON.parse(value);
});
// Define an info window on the map.
infoWindow = new google.maps.InfoWindow();
});
map.fitBounds(bounds);
});
}
</script>
答案 0 :(得分:1)
一种选择是移动多边形,使其以自动完成结果返回的坐标为中心:
var polybnds = new google.maps.LatLngBounds();
for (var i = 0; i < polygon.getPath().getLength(); i++) {
polybnds.extend(polygon.getPath().getAt(i));
}
var polyCenter = polybnds.getCenter();
// center polygon on first marker
var distance = google.maps.geometry.spherical.computeDistanceBetween(polyCenter, markers[0].getPosition());
var heading = google.maps.geometry.spherical.computeHeading(polyCenter, markers[0].getPosition());
var path = [];
polybnds = new google.maps.LatLngBounds();
for (var i = 0; i < polygon.getPath().getLength(); i++) {
var pt = google.maps.geometry.spherical.computeOffset(polygon.getPath().getAt(i), distance, heading);
path.push(pt);
polybnds.extend(pt);
}
polygon.setPath(path);
代码段:
html,
body,
#map {
height: 90%;
width: 100%;
padding: 0px;
margin: 0px;
}
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?libraries=places,geometry&callback=initAutocomplete" async defer></script>
<input id="search_location" />
<div id="map"></div>
<script>
function initAutocomplete() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {
lat: 30.3753,
lng: 69.3451
},
zoom: 6,
mapTypeId: 'roadmap'
});
// Create the search box and link it to the UI element.
var input = document.getElementById('search_location');
var searchBox = new google.maps.places.SearchBox(input);
// map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
// Bias the SearchBox results towards current map's viewport.
map.addListener('bounds_changed', function() {
searchBox.setBounds(map.getBounds());
});
var markers = [];
// Listen for the event fired when the user selects a prediction and retrieve
// more details for that place.
searchBox.addListener('places_changed', function() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
markers = [];
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
if (!place.geometry) {
console.log("Returned place contains no geometry");
return;
}
var icon = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
// Create a marker for each place.
markers.push(new google.maps.Marker({
map: map,
icon: icon,
title: place.name,
position: place.geometry.location
}));
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
var arrCoords = [
new google.maps.LatLng(32.3753, 64.3451),
new google.maps.LatLng(30.3753, 66.3451),
new google.maps.LatLng(30.3753, 65.3451),
new google.maps.LatLng(29.3753, 63.3451),
// new google.maps.LatLng(51.477654, -0.002192)
];
var polygon = new google.maps.Polygon({
editable: true,
paths: arrCoords,
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
// map: map,
draggable: true,
geodesic: true,
});
if (markers.length == 1) { // only do for first marker}
var polybnds = new google.maps.LatLngBounds();
for (var i = 0; i < polygon.getPath().getLength(); i++) {
polybnds.extend(polygon.getPath().getAt(i));
}
var polyCenter = polybnds.getCenter();
// center polygon on first marker
var distance = google.maps.geometry.spherical.computeDistanceBetween(polyCenter, markers[0].getPosition());
var heading = google.maps.geometry.spherical.computeHeading(polyCenter, markers[0].getPosition());
var path = [];
polybnds = new google.maps.LatLngBounds();
for (var i = 0; i < polygon.getPath().getLength(); i++) {
var pt = google.maps.geometry.spherical.computeOffset(polygon.getPath().getAt(i), distance, heading);
path.push(pt);
polybnds.extend(pt);
}
polygon.setPath(path);
polygon.setMap(map);
google.maps.event.addListenerOnce(map, 'bounds_changed', function() {
map.fitBounds(polybnds);
});
}
google.maps.event.addListener(polygon, 'dragend', function(evt) {
console.log(evt.latLng.lat(), '--', evt.latLng.lng());
});
google.maps.event.addListener(polygon.getPath(), 'set_at', function(index, obj) {
console.log('Vertex moved on outer path.');
console.log(obj.lat(), '--', obj.lng());
var Array = [];
Array.push(obj.lat(), obj.lng(), obj.lat(), obj.lng());
$('#lat_long').val(JSON.stringify(Array));
var value = $('#lat_long').val();
value = JSON.parse(value);
});
// Define an info window on the map.
infoWindow = new google.maps.InfoWindow();
});
map.fitBounds(bounds);
});
}
</script>