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  • @updownupdown Hi, once you add code for google maps for acf, you need to input the coordinates of polygon:

    // center map
	center_map( map );

	// Define the LatLng coordinates for the polygon.
	var triangleCoords = [
		{lat: 44.28223, lng: 20.63992},
		{lat: 44.28253, lng: 20.63935},
		{lat: 44.28301, lng: 20.63984},
		{lat: 44.28226, lng: 20.64103},
		{lat: 44.28246, lng: 20.64138},
		{lat: 44.28192, lng: 20.64267},
		{lat: 44.2812, lng: 20.64186},
		{lat: 44.28206, lng: 20.63973}
	];

	  // Construct the polygon.
	  var bermudaTriangle = new google.maps.Polygon({
	  	paths: triangleCoords,
	  	strokeColor: '#FF0000',
	  	strokeOpacity: 0.8,
	  	strokeWeight: 3,
	  	fillColor: '#FF0000',
	  	fillOpacity: 0.35
	  });
	  bermudaTriangle.setMap(map);

	  // Add a listener for the click event.
	  bermudaTriangle.addListener('click', showArrays);

	  infoWindow = new google.maps.InfoWindow;
// }

    after that you can render the polygon with this piece of code:

    /** @this {google.maps.Polygon} */
function showArrays(event) {
  // Since this polygon has only one path, we can call getPath() to return the
  // MVCArray of LatLngs.
  var vertices = this.getPath();

  var contentString = '<b>Bermuda Triangle polygon</b><br>' +
      'Clicked location: <br>' + event.latLng.lat() + ',' + event.latLng.lng() +
      '<br>';

  // Iterate over the vertices.
  for (var i =0; i < vertices.getLength(); i++) {
    var xy = vertices.getAt(i);
    contentString += '<br>' + 'Coordinate ' + i + ':<br>' + xy.lat() + ',' +
        xy.lng();
  }

  // // Replace the info window's content and position.
  // Turned off since i didn't need the rendering of tooltip over polygon.
  // infoWindow.setContent(contentString);
  // infoWindow.setPosition(event.latLng);

  // infoWindow.open(map);
}

    And that is it 🙂

    Here is the code i use for google maps on one of the wp website where i needed polygon area:

    <style type="text/css">

.acf-map {
	width: 100%;
	height: 400px;
	border: #ccc solid 1px;
	/* margin: 20px 0; */
}

/* fixes potential theme css conflict */
.acf-map img {
   max-width: inherit !important;
}

</style>
<script src="https://maps.googleapis.com/maps/api/js?key=ADD-YOUR-KEY-HERE"></script>
<script type="text/javascript">
(function($) {

/*
*  new_map
*
*  This function will render a Google Map onto the selected jQuery element
*
*  @type	function
*  @date	8/11/2013
*  @since	4.3.0
*
*  @param	$el (jQuery element)
*  @return	n/a
*/

function new_map( $el ) {
	
	// var
	var $markers = $el.find('.marker');
	
	
	// vars
       //custom styling of the map
	var args = {
		zoom		: 16,
		center		: new google.maps.LatLng(0, 0),
		
		styles: [
				{
					"featureType": "all",
					"elementType": "geometry",
					"stylers": [
						{
							"color": "#574029"
						}
					]
				},
				{
					"featureType": "all",
					"elementType": "labels.text.fill",
					"stylers": [
						{
							"gamma": "1.27"
						},
						{
							"lightness": 20
						},
						{
							"color": "#ffffff"
						}
					]
				},
				{
					"featureType": "all",
					"elementType": "labels.text.stroke",
					"stylers": [
						{
							"saturation": "-100"
						},
						{
							"lightness": "-100"
						},
						{
							"weight": "1.19"
						},
						{
							"gamma": "0.00"
						},
						{
							"hue": "#ff0000"
						},
						{
							"invert_lightness": true
						}
					]
				},
				{
					"featureType": "all",
					"elementType": "labels.icon",
					"stylers": [
						{
							"visibility": "off"
						},
						{
							"saturation": "-100"
						},
						{
							"lightness": "-100"
						},
						{
							"gamma": "0.00"
						},
						{
							"weight": "0.01"
						}
					]
				},
				{
					"featureType": "landscape",
					"elementType": "geometry",
					"stylers": [
						{
							"lightness": 30
						},
						{
							"saturation": 30
						},
						{
							"color": "#919d8b"
						}
					]
				},
				{
					"featureType": "poi",
					"elementType": "geometry",
					"stylers": [
						{
							"saturation": 20
						}
					]
				},
				{
					"featureType": "poi.park",
					"elementType": "geometry",
					"stylers": [
						{
							"lightness": 20
						},
						{
							"saturation": -20
						}
					]
				},
				{
					"featureType": "road",
					"elementType": "geometry",
					"stylers": [
						{
							"lightness": "40"
						},
						{
							"saturation": -30
						}
					]
				},
				{
					"featureType": "road",
					"elementType": "geometry.stroke",
					"stylers": [
						{
							"saturation": 25
						},
						{
							"lightness": "100"
						},
						{
							"gamma": "1.00"
						},
						{
							"weight": "0.78"
						}
					]
				},
				{
					"featureType": "water",
					"elementType": "all",
					"stylers": [
						{
							"lightness": -20
						}
					]
				}
			],
		mapTypeId	: google.maps.MapTypeId.ROADMAP
	};
	
	
	// create map	        	
	var map = new google.maps.Map( $el[0], args);
	
	
	// add a markers reference
	map.markers = [];
	
	
	// add markers
	$markers.each(function(){
		
		add_marker( $(this), map );
		
	});
	
	
	// center map
	center_map( map );

	// Define the LatLng coordinates for the polygon.
	var triangleCoords = [
		{lat: 44.28223, lng: 20.63992},
		{lat: 44.28253, lng: 20.63935},
		{lat: 44.28301, lng: 20.63984},
		{lat: 44.28226, lng: 20.64103},
		{lat: 44.28246, lng: 20.64138},
		{lat: 44.28192, lng: 20.64267},
		{lat: 44.2812, lng: 20.64186},
		{lat: 44.28206, lng: 20.63973}
	];

	  // Construct the polygon.
	  var bermudaTriangle = new google.maps.Polygon({
	  	paths: triangleCoords,
	  	strokeColor: '#FF0000',
	  	strokeOpacity: 0.8,
	  	strokeWeight: 3,
	  	fillColor: '#FF0000',
	  	fillOpacity: 0.35
	  });
	  bermudaTriangle.setMap(map);

	  // Add a listener for the click event.
	  bermudaTriangle.addListener('click', showArrays);

	  infoWindow = new google.maps.InfoWindow;
// }

	
	// return
	return map;
	
}

/*
*  add_marker
*
*  This function will add a marker to the selected Google Map
*
*  @type	function
*  @date	8/11/2013
*  @since	4.3.0
*
*  @param	$marker (jQuery element)
*  @param	map (Google Map object)
*  @return	n/a
*/

function add_marker( $marker, map ) {

	// var
	var latlng = new google.maps.LatLng( $marker.attr('data-lat'), $marker.attr('data-lng') );

	// create marker
	icon = 'https://developers.google.com/maps/documentation/javascript/examples/full/images/beachflag.png';
	var marker = new google.maps.Marker({
		position	: latlng,
		icon        : icon,
		map			: map
	});

	// add to array
	map.markers.push( marker );

	// if marker contains HTML, add it to an infoWindow
	if( $marker.html() )
	{
		// create info window
		var infowindow = new google.maps.InfoWindow({
			content		: $marker.html()
		});

		// show info window when marker is clicked
		google.maps.event.addListener(marker, 'click', function() {

			infowindow.open( map, marker );

		});
	}

}

/*
*  center_map
*
*  This function will center the map, showing all markers attached to this map
*
*  @type	function
*  @date	8/11/2013
*  @since	4.3.0
*
*  @param	map (Google Map object)
*  @return	n/a
*/

function center_map( map ) {

	// vars
	var bounds = new google.maps.LatLngBounds();

	// loop through all markers and create bounds
	$.each( map.markers, function( i, marker ){

		var latlng = new google.maps.LatLng( marker.position.lat(), marker.position.lng() );

		bounds.extend( latlng );

	});

	// only 1 marker?
	if( map.markers.length == 1 )
	{
		// set center of map
		map.setCenter( bounds.getCenter() );
		map.setZoom( 16 );
	}
	else
	{
		// fit to bounds
		map.fitBounds( bounds );
	}

}

/** @this {google.maps.Polygon} */

function showArrays(event) {
  // Since this polygon has only one path, we can call getPath() to return the
  // MVCArray of LatLngs.
  var vertices = this.getPath();

  var contentString = '<b>Bermuda Triangle polygon</b><br>' +
      'Clicked location: <br>' + event.latLng.lat() + ',' + event.latLng.lng() +
      '<br>';

  // Iterate over the vertices.
  for (var i =0; i < vertices.getLength(); i++) {
    var xy = vertices.getAt(i);
    contentString += '<br>' + 'Coordinate ' + i + ':<br>' + xy.lat() + ',' +
        xy.lng();
  }

  // // Replace the info window's content and position.
  // Turned off since i didn't need the rendering of tooltip over polygon.
  // infoWindow.setContent(contentString);
  // infoWindow.setPosition(event.latLng);

  // infoWindow.open(map);
}

/*
*  document ready
*
*  This function will render each map when the document is ready (page has loaded)
*
*  @type	function
*  @date	8/11/2013
*  @since	5.0.0
*
*  @param	n/a
*  @return	n/a
*/
// global var
var map = null;

$(document).ready(function(){

	$('.acf-map').each(function(){

		// create map
		map = new_map( $(this) );

	});

});

})(jQuery);
</script>

    and i used this polygon render by google as starting point, and of course the pen u mentioned earlier to get the coordinates of the polygon i needed.