var geocoder;
var map;
var searchService;
var myLocation;
var directionsService = new google.maps.DirectionsService();
var directionsDisplay = new google.maps.DirectionsRenderer();
function initialize() {
var map = new google.maps.Map(
document.getElementById("map_canvas"), {
center: new google.maps.LatLng(37.4419, -122.1419),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
myLocation = map.getCenter();
var marker = new google.maps.Marker({
position: myLocation,
map: map
});
searchService = new google.maps.places.PlacesService(map);
directionsDisplay.setMap(map);
var request = {
location: myLocation,
rankBy: google.maps.places.RankBy.DISTANCE,
types: ['bar', 'cafe', 'food', 'liquor_store', 'lodging', 'meal_delivery', 'meal_takeaway', 'night_club', 'restaurant'],
keyword: ['bar', 'pub']
};
searchService.nearbySearch(request, function(bars, status) {
if (status === google.maps.places.PlacesServiceStatus.OK) {
var barMark = new google.maps.Marker({
position: bars[0].geometry.location,
map: map,
icon: {
url: "https://maps.gstatic.com/intl/en_us/mapfiles/markers2/measle.png",
size: new google.maps.Size(7, 7),
anchor: new google.maps.Point(3.5, 3.5)
}
});
var request = {
origin: myLocation,
destination: bars[0].geometry.location,
travelMode: google.maps.TravelMode.WALKING
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
directionsDisplay.setOptions({
suppressMarkers: true,
preserveViewport: true
});
var polyline = getPolyline(response);
map.setCenter(polyline.getPath().getAt(polyline.getPath().getLength() - 1));
map.setZoom(19);
var lineLength = google.maps.geometry.spherical.computeDistanceBetween(bars[0].geometry.location, polyline.getPath().getAt(polyline.getPath().getLength() - 1));
var lineHeading = google.maps.geometry.spherical.computeHeading(bars[0].geometry.location, polyline.getPath().getAt(polyline.getPath().getLength() - 1));
var markerO = new google.maps.Marker({
position: google.maps.geometry.spherical.computeOffset(bars[0].geometry.location, lineLength * 0.1, lineHeading)
});
var markerD = new google.maps.Marker({
position: google.maps.geometry.spherical.computeOffset(bars[0].geometry.location, lineLength * 0.9, lineHeading)
});
var markerA = new google.maps.Marker({
position: google.maps.geometry.spherical.computeOffset(markerO.getPosition(), lineLength/3, lineHeading - 40)
});
var markerB = new google.maps.Marker({
position: google.maps.geometry.spherical.computeOffset(markerD.getPosition(), lineLength/3, lineHeading - 140)
});
var curvedLine = new GmapsCubicBezier(markerO.getPosition(), markerA.getPosition(), markerB.getPosition(), markerD.getPosition(), 0.01, map);
var line = new google.maps.Polyline({
path: [bars[0].geometry.location, polyline.getPath().getAt(polyline.getPath().getLength() - 1)],
strokeOpacity: 0,
icons: [{
icon: {
path: 'M 0,-1 0,1',
strokeOpacity: 1,
scale: 4
},
offset: '0',
repeat: '20px'
}],
// map: map
});
} else {
console.log("directionsService : " + status);
}
});
}
});
}
google.maps.event.addDomListener(window, "load", initialize);
function getPolyline(result) {
var polyline = new google.maps.Polyline({
path: []
});
var path = result.routes[0].overview_path;
var legs = result.routes[0].legs;
for (i = 0; i < legs.length; i++) {
var steps = legs[i].steps;
for (j = 0; j < steps.length; j++) {
var nextSegment = steps[j].path;
for (k = 0; k < nextSegment.length; k++) {
polyline.getPath().push(nextSegment[k]);
}
}
}
return polyline;
}
var GmapsCubicBezier = function(latlong1, latlong2, latlong3, latlong4, resolution, map) {
var lat1 = latlong1.lat();
var long1 = latlong1.lng();
var lat2 = latlong2.lat();
var long2 = latlong2.lng();
var lat3 = latlong3.lat();
var long3 = latlong3.lng();
var lat4 = latlong4.lat();
var long4 = latlong4.lng();
var points = [];
for (it = 0; it <= 1; it += resolution) {
points.push(this.getBezier({
x: lat1,
y: long1
}, {
x: lat2,
y: long2
}, {
x: lat3,
y: long3
}, {
x: lat4,
y: long4
}, it));
}
var path = [];
for (var i = 0; i < points.length - 1; i++) {
path.push(new google.maps.LatLng(points[i].x, points[i].y));
path.push(new google.maps.LatLng(points[i + 1].x, points[i + 1].y, false));
}
var Line = new google.maps.Polyline({
path: path,
geodesic: true,
strokeOpacity: 0.0,
icons: [{
icon: {
path: 'M 0,-1 0,1',
strokeOpacity: 1,
scale: 4
},
offset: '0',
repeat: '20px'
}],
strokeColor: 'grey'
});
Line.setMap(map);
return Line;
};
GmapsCubicBezier.prototype = {
B1: function(t) {
return t * t * t;
},
B2: function(t) {
return 3 * t * t * (1 - t);
},
B3: function(t) {
return 3 * t * (1 - t) * (1 - t);
},
B4: function(t) {
return (1 - t) * (1 - t) * (1 - t);
},
getBezier: function(C1, C2, C3, C4, percent) {
var pos = {};
pos.x = C1.x * this.B1(percent) + C2.x * this.B2(percent) + C3.x * this.B3(percent) + C4.x * this.B4(percent);
pos.y = C1.y * this.B1(percent) + C2.y * this.B2(percent) + C3.y * this.B3(percent) + C4.y * this.B4(percent);
return pos;
}
};
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js?libraries=places"></script>
<div id="map_canvas"></div>
