Google MAP API: How to draw shortest plane path between two geo-points?

Question

I need to draw shortest plane path on a map. I created KML in Google Earth and loaded int to Google Map. As you can see attached images: paths is very different: Google Vap path is longer. How to draw arc path on Google map?

Answer 1

In V3, it's simply adding the geodesic: true option to your Polyline.

Demo http://jsfiddle.net/yV6xv/20/ Click on the map to define path endpoints

    var myLine = new google.maps.Polyline({
      map: map,
      geodesic: true
    });

    var path = [];

    google.maps.event.addListener(map, 'click', function(event) {
      new google.maps.Marker({map:map,position:event.latLng});
      path.push(event.latLng);
      myLine.setPath(path);
    });