Iscrtavanje SVG na gMapi

[mslavko]

Probao sam i ovako (objasnjenje stoji u kodu):

var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
      var poligon;
      var tacke;
      var primer;
      var rezultat;

function initialize() {
  directionsDisplay = new google.maps.DirectionsRenderer();
  var chicago = new google.maps.LatLng(41.850033, -87.6500523);
  var mapOptions = {
    zoom:7,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    center: chicago
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  directionsDisplay.setMap(map);
}

function calcRoute() {
  var start = document.getElementById('start').value;
  var end = document.getElementById('end').value;
  var request = {
      origin:start,
      destination:end,
      travelMode: google.maps.DirectionsTravelMode.DRIVING
  };
  directionsService.route(request, function(response, status) {
    if (status == google.maps.DirectionsStatus.OK) {
            directionsDisplay.setDirections(response);
      //tacke = response.routes[0].overview_path;
      //primer = [[{"X":72,"Y":59.45},{"X":136,"Y":66},{"X":170,"Y":99},{"X":171,"Y":114},{"X":183,"Y":125},{"X":218,"Y":144},{"X":218,"Y":165},{"X":226,"Y":193},{"X":254,"Y":195},{"X":283,"Y":195},{"X":292,"Y":202},{"X":325,"Y":213},{"X":341,"Y":234},{"X":397,"Y":245},{"X":417,"Y":248}]]; 
      //ovde transformisem tacke iz directons-a u format citljiv JSclliper biblioteci
      var overviewPath = response.routes[0].overview_path,
    overviewPathGeo = [];
for(var i = 0; i < overviewPath.length; i++) {
    overviewPathGeo.push(
        [overviewPath[i].lng(), overviewPath[i].lat()]
    );
}
      //kreiram varijablu koja ce vratiti tacke za crtanje poligona
      var svg=draw(overviewPathGeo);
      //kod za crtanje poligona
    poligon = new google.maps.Polygon({
    paths: svg,
    strokeColor: '#FF0000',
    strokeOpacity: 0.8,
    strokeWeight: 2,
    fillColor: '#FF0000',
    fillOpacity: 0.35
  });
      //crtam poligon
  poligon.setMap(map);

        
    }
  });
}

google.maps.event.addDomListener(window, 'load', initialize);
      //funcija sa argumentom u - ustavri su tacke koje daje directions servis
function draw(u) {
  var polygons = u; 
  var scale = 100;
  reverse_copy(polygons);
  polygons = scaleup(polygons, scale);
  var cpr = new ClipperLib.Clipper();
  var delta = 25;
  var joinType = ClipperLib.JoinType.jtRound;
  var miterLimit = 2;
  var AutoFix = true;
  var svg, offsetted_polygon,
  cont = document.getElementById('map-canvas');
  offsetted_polygon = cpr.OffsetPolygons(polygons, delta * scale, joinType, miterLimit, AutoFix);
  console.log(JSON.stringify(offsetted_polygon));
  
  svg = polys2path(offsetted_polygon, scale);
        rezultat = polys2path(offsetted_polygon, scale);
  return svg;

   
        
}
// helper function to scale up polygon coordinates
function scaleup(poly, scale) {
  var i, j;
  if (!scale) scale = 1;
  for(i = 0; i < poly.length; i++) {
    for(j = 0; j < poly[i].length; j++) {
      poly[i][j].X *= scale;
      poly[i][j].Y *= scale;
    }
  }
  return poly;
}

// converts polygons to SVG path string
function polys2path (poly, scale) {
  var path = "", i, j;
  if (!scale) scale = 1;
  for(i = 0; i < poly.length; i++) {
    for(j = 0; j < poly[i].length; j++){
      if (!j) path += "M";
      else path += "L";
      path += (poly[i][j].X / scale) + ", " + (poly[i][j].Y / scale);
    }
    path += "Z";
  }
  return path;
}

function reverse_copy(poly) {
	// Make reverse copy of polygons = convert polyline to a 'flat' polygon ...
  var k, klen = poly.length, len, j; 
  for (k = 0; k < klen; k++) {
    len = poly[k].length;
    poly[k].length = len * 2 - 2;
    for (j = 1; j <= len - 2; j++) {
      poly[k][len - 1 + j] = {
        X: poly[k][len - 1 - j].X,
        Y: poly[k][len - 1 - j].Y
      }
    }
  }
}

    </script>

CEO KOD I DEMO: http://jsbin.com/uTATePe/32/edit