Get Array Of All Points Of Polygon - Google Maps Drawing Tool Api-3

i am using Google Drawing tools for drawing polygon/rectangle on google maps, now i need to show markers that falls inside the drawn polygon and for that i am using geometry.poly.c

Solution 1:

google.maps.event.addListener(drawingManager, 'polygoncomplete', function (polygon) {
    // assuming you want the points in a div with id="info"document.getElementById('info').innerHTML += "polygon points:" + "<br>";
    for (var i = 0; i < polygon.getPath().getLength(); i++) {
        document.getElementById('info').innerHTML += polygon.getPath().getAt(i).toUrlValue(6) + "<br>";
    }
});

proof of concept fiddle

code snippet:

var geocoder;
var map;
var polygonArray = [];

functioninitialize() {
  map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  var drawingManager = new google.maps.drawing.DrawingManager({
    drawingMode: google.maps.drawing.OverlayType.POLYGON,
    drawingControl: true,
    drawingControlOptions: {
      position: google.maps.ControlPosition.TOP_CENTER,
      drawingModes: [
        google.maps.drawing.OverlayType.MARKER,
        google.maps.drawing.OverlayType.CIRCLE,
        google.maps.drawing.OverlayType.POLYGON,
        google.maps.drawing.OverlayType.POLYLINE,
        google.maps.drawing.OverlayType.RECTANGLE
      ]
    },
    /* not useful on jsfiddle
    markerOptions: {
      icon: 'images/car-icon.png'
    }, */circleOptions: {
      fillColor: '#ffff00',
      fillOpacity: 1,
      strokeWeight: 5,
      clickable: false,
      editable: true,
      zIndex: 1
    },
    polygonOptions: {
      fillColor: '#BCDCF9',
      fillOpacity: 0.5,
      strokeWeight: 2,
      strokeColor: '#57ACF9',
      clickable: false,
      editable: false,
      zIndex: 1
    }
  });
  console.log(drawingManager)
  drawingManager.setMap(map)

  google.maps.event.addListener(drawingManager, 'polygoncomplete', function(polygon) {
    document.getElementById('info').innerHTML += "polygon points:" + "<br>";
    for (var i = 0; i < polygon.getPath().getLength(); i++) {
      document.getElementById('info').innerHTML += polygon.getPath().getAt(i).toUrlValue(6) + "<br>";
    }
    polygonArray.push(polygon);
  });

}
google.maps.event.addDomListener(window, "load", initialize);

html,
body,
#map_canvas {
  height: 500px;
  width: 500px;
  margin: 0px;
  padding: 0px
}

<scriptsrc="https://maps.googleapis.com/maps/api/js?libraries=geometry,drawing&key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script><divid="map_canvas"style=" border: 2px solid #3872ac;"></div><divid="info"></div>

Solution 2:

A slightly different solution than what geocodezip proposes, but using the same API calls:

google.maps.event.addListener(drawingManager, 'polygoncomplete', function(polygon) {
    var path = polygon.getPath()
    var coordinates = [];

for (var i = 0 ; i < path.length ; i++) {
      coordinates.push({
        lat: path.getAt(i).lat(),
        lng: path.getAt(i).lng()
      });
    }
    console.log(coordinates);
});

Solution 3:

It looks like the DrawingManager will fire events when the user finishes drawing something and the event handler will receive a normal google.maps.Polygon, google.maps.Rectangle, and so on. I would try that.

Here's a documentation link.