Suppressmarkers And Draggable For Directionsrendereroptions Google Maps Api

I'm using Google Maps API to create a direction with the given points. I need to order the points as 1,2,3...99 (It's done). Also the points must be draggable. But when I make the

Solution 1:

Just recalculate the route every time a marker is dragged. Listen for the dragend event and calculate route again and then render it on map, again with suppressing markers. Careful though, if you drag a marker to some position where route cannot be calculated (e.g. over sea, or some mountains, etc.) you would get error when re-calculating the route.

Working example:

functioninit(){
    var markers = [];
    var directionsService = new google.maps.DirectionsService();
    var pos = new google.maps.LatLng(41.218624, -73.748358);
    var myOptions = {
        zoom: 15,
        center: pos,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };

    map = new google.maps.Map(document.getElementById('map'), myOptions);
    directionsDisplay = new google.maps.DirectionsRenderer({map: map, suppressMarkers: true});

    directionsService.route({
        origin: "New York",
        destination: "Chicago",
        waypoints: [{location:"Philadelphia"}, {location:"Boston"}], //other duration pointsoptimizeWaypoints: true,
        travelMode: google.maps.TravelMode.DRIVING
    }, function(response, status) {
        if (status === google.maps.DirectionsStatus.OK) {
            directionsDisplay.setDirections(response);
			var my_route = response.routes[0];
            for (var i = 0; i < my_route.legs.length; i++) {
                addDraggableDirectionsMarker(my_route.legs[i].start_location, i+1, map, markers, directionsService, directionsDisplay);
            }
			addDraggableDirectionsMarker(my_route.legs[i-1].end_location, i+1, map, markers, directionsService, directionsDisplay);
        } else {
            vts.alertDialog( window.localization.error,
                window.localization.error_direction_calculate + ": " + status,
                BootstrapDialog.TYPE_DANGER);
        }
    });

}    

functionaddDraggableDirectionsMarker(position, label, map, markers, directionsService, directionsDisplay){
    var marker = new google.maps.Marker({
        position: position,
        label: "" + label,
        map: map,
		draggable: true
    });
    google.maps.event.addListener(marker, 'click', function(){
        //do whatever you want on marker click
    }); 
	google.maps.event.addListener(marker, 'dragend', function(){
		if(markers.length < 2) return;
		var waypoints = [];
		for(var i = 1; i < markers.length - 1; i++) waypoints.push({location:markers[i].getPosition()});
	    directionsService.route({
	        origin: markers[0].getPosition(),
	        destination: markers[markers.length-1].getPosition(),
	        waypoints: waypoints,
	        optimizeWaypoints: true,
	        travelMode: google.maps.TravelMode.DRIVING
	    }, function(response, status) {
	        if (status === google.maps.DirectionsStatus.OK) {
	            directionsDisplay.setDirections(response);
                    //uncomment following code if you want the markers you dragged to snap to the route, closest to the point where you dragged the marker/*var my_route = response.routes[0];
            for (var i = 0; i < my_route.legs.length; i++) {
	           markers[i].setPosition(my_route.legs[i].start_location);
            }
            markers[i].setPosition(my_route.legs[i-1].end_location);*/
	        } else {
	            vts.alertDialog( window.localization.error,
	                window.localization.error_direction_calculate + ": " + status,
	                BootstrapDialog.TYPE_DANGER);
	        }
		});
	});
	markers.push(marker);
}

<scripttype="text/javascript"src="http://www.google.com/jsapi"></script><scripttype="text/javascript">
google.load("maps", "3",{other_params:"sensor=false"});
</script><bodystyle="margin:0px; padding:0px;"onload="init()"><divid="map"style="height:400px; width:500px;"></div></body>