How to get places on google map route - google-maps

Question

How to get all places like Entertainment, food, gas station etc on google map plotted route from source to destination only on route not nearby.

Answer 1

To build on the link that #geocodezip gave, to work around query limits it might be a better practice to make a bounding box based on steps rather than using the Google Maps utility, and then filter locations by actual distance to a node in the step. This could be accomplished using the following code:
In initialize(), put:
var placeserv = null;
function initialize(){
//setup map
placeserv = new google.maps.PlacesService(map); //use your map variable
}
In the callback function for the Directions Service (using parameters results and status), you can include something like this:
var route = results[0];
var steps = route.legs[0].steps;
for(var i=0; i<steps.length; i++){
var lats = steps[i].path.map(function(a){return a.lat()});
var lngs = steps[i].path.map(function(a){return a.lng()});
var box = new google.maps.LatLngBounds(
new google.maps.LatLng(Math.max.apply(null, lats), Math.max.apply(null, lngs)),
new google.maps.LatLng(Math.min.apply(null, lats), Math.min.apply(null, lngs))
);
placeserv.radarSearch(yourRequest_seeDocumentation_or_geocodezipsCode,
function(r,s){callback(r,s,steps[i].path)}
);
//depending on the number of queries you need to make, you may to add in
//some setTimeouts
}
And then add a callback function for your call that checks if the route is within a specified degree. If so, it will do something with the location. (By the way, this requires the Geometry Library for Google Maps. Please look it up.)
var minimumDist = 300 //within 300 meters of a point on the route
function callback(results, status, stepPts){
if(results == 'OK'){
for(var j=0; j<results.length; j++){
for(var k=0; k<stepPts.length; k++){
var dist = google.maps.geometry.spherical.computeDistanceBetween(stepPts[k], results[j].geometry.location);
if(dist < minimumDist){
//do something with the location
}
}
}
}
}
Again, geocodezip has a very complete and excellent post in the link he gave you. This is just the implementation I would use to cut down on Places Service calls.