Javascript library that offer some usefull function when you work with path/directions/routes in Google Maps API, under LGPL Licence.

// Simply create a point on Paris and Zurich centers var paris = new google.maps.LatLng(48.856667,2.350987); var zurich = new google.maps.LatLng(47.369024,8.538033);

// Now retrieve a Bounds object that surround all paris. // ie a square of 10km with $paris as center var parisRectangle = paris.getRadialBoundaries(5);

// Simply get the straight distance between Paris and Zurich, result in kilometers // Something around 490km var paris_zurich_distance = paris.distanceFrom(zurich);

// Then, retrieve the point at 140km between Paris->Zurich (on a straight line) // Again, distance is in kilometers // This point is near "Troyes" french city. var somewhereNearTroyes = paris.pointBetween(zurich,140);

// Retrieve the route from Paris to Zurich var request = { origin: paris, destination: zurich, travelMode: google.maps.DirectionsTravelMode.DRIVING }; directionsService.route(request, function(response, status) { if (status != google.maps.DirectionsStatus.OK) return; var leg = response.routes[0].legs[0];

// Once we get that result, compute the point at one hour on the road from Paris to Zurich :) var oneHoursFromParisOnTheRoadToZurich = getDirectionPointAtDuration(leg,16060);

// Or the point at the middle of the trip // Not the middle in term of kilometer, but in times! var middleInTimeFromParisOnTheRoadToZurich = getDirectionPointAtDuration(leg,leg.duration.value/2);

});