Вот простой рабочий пример для вас. Все с Label
осуществляется через http://blog.mridey.com/2009/09/label-overlay-example-for-google-maps.html
В основном мы разрабатываем расстояние на полпути вдоль линии, добавить невидимый маркер к нему, вычислить длину линии в милях и километрах, а затем прикрепить ярлык к этому маркеру, который отображается, когда мы наводим курсор на линию.
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100%; width: 100% }
</style>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?libraries=geometry&sensor=false"></script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
function initialize() {
var homeLatlng = new google.maps.LatLng(54.42838,-2.9623);
var myOptions = {
zoom: 10,
center: homeLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
var homeMarker = new google.maps.Marker({
position: homeLatlng,
map: map,
title:"Ambleside"
});
var latLng1 = new google.maps.LatLng(54.60039,-3.13632);
var marker = new google.maps.Marker({
position: latLng1,
map: map,
title:"Keswick",
icon: 'http://maps.google.co.uk/intl/en_ALL/mapfiles/ms/micons/green-dot.png'
});
var stuDistance = calculateDistances(homeLatlng, latLng1);
// draw line between marker and home. these are curved lines, not as the crow flies, i.e. they take into account the curvature of the earth (only noticable on longer distances)
polyline = new google.maps.Polyline({
path: [homeLatlng, latLng1],
strokeColor: "#FF0000",
strokeOpacity: 0.5,
strokeWeight: 4,
geodesic: true,
map: map
});
// get the point half-way between this marker and the home marker
var inBetween = google.maps.geometry.spherical.interpolate(homeLatlng, latLng1, 0.5);
var midPointMarker = new google.maps.Marker({
position: inBetween,
map: map,
visible: false // NB the marker is 'invisible'
});
var stuLabel = new Label();
stuLabel.bindTo('position', midPointMarker, 'position');
stuLabel.set('text', stuDistance.miles + ' miles');
// lets add event listeners
google.maps.event.addListener(polyline, 'mouseover', function() {
stuLabel.setMap(map);
});
google.maps.event.addListener(polyline, 'mouseout', function() {
stuLabel.setMap(null);
});
}
function calculateDistances(start,end) {
var stuDistances = {};
stuDistances.metres = google.maps.geometry.spherical.computeDistanceBetween(start, end); // distance in metres rounded to 1dp
stuDistances.km = Math.round(stuDistances.metres/1000 *10)/10; // distance in km rounded to 1dp
stuDistances.miles = Math.round(stuDistances.metres/1000 * 0.6214 *10)/10; // distance in miles rounded to 1dp
return stuDistances;
}
// Define the overlay, derived from google.maps.OverlayView
function Label(opt_options) {
// Initialization
this.setValues(opt_options);
// Label specific
var span = this.span_ = document.createElement('span');
span.style.cssText = 'position: relative; left: -50%; top: -8px; ' +
'white-space: nowrap; border: 1px solid blue; ' +
'padding: 2px; background-color: white';
var div = this.div_ = document.createElement('div');
div.appendChild(span);
div.style.cssText = 'position: absolute; display: none';
}
Label.prototype = new google.maps.OverlayView;
// Implement onAdd
Label.prototype.onAdd = function() {
var pane = this.getPanes().overlayLayer;
pane.appendChild(this.div_);
// Ensures the label is redrawn if the text or position is changed.
var me = this;
this.listeners_ = [
google.maps.event.addListener(this, 'position_changed',
function() { me.draw(); }),
google.maps.event.addListener(this, 'text_changed',
function() { me.draw(); })
];
};
// Implement onRemove
Label.prototype.onRemove = function() {
this.div_.parentNode.removeChild(this.div_);
// Label is removed from the map, stop updating its position/text.
for (var i = 0, I = this.listeners_.length; i < I; ++i) {
google.maps.event.removeListener(this.listeners_[i]);
}
};
// Implement draw
Label.prototype.draw = function() {
var projection = this.getProjection();
var position = projection.fromLatLngToDivPixel(this.get('position'));
var div = this.div_;
div.style.left = position.x + 'px';
div.style.top = position.y + 'px';
div.style.display = 'block';
this.span_.innerHTML = this.get('text').toString();
};
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map_canvas"></div>
</body>
</html>
полилиния не имеет «подсказки», которые вы можете установить легко. Вы можете прикрепить ярлык к строке, например, см. http://blog.mridey.com/2009/09/label-overlay-example-for-google-maps.html – duncan
Возможный дубликат [Как добавить пользовательскую подсказку для маркера карты Google?] (http: // stackoverflow .com/questions/9581045/how-to-add-custom-tooltip-for-google-map-marker) – geocodezip
[Доказательство концепции] (http://www.geocodezip.com/v3_SO_directionsWithTooltip.html) (отображает широту/долгота при наведении указателя полилинии по направлениям) – geocodezip