SO 21634097

How to get lat/lang/radius of center of circle that user draw

HTML

<script src="http://maps.google.com/maps/api/js?sensor=false&amp;libraries=drawing"></script>
<div id="map-canvas"></div>

CSS

#map-canvas {
    height: 600px;
    width: 600px;
    background-color: gray;
}

JavaScript

(function () {
    var circle;

    function initialize() {
        var mapOptions = {
            center: new google.maps.LatLng(-34.397, 150.644),
            zoom: 8
        };


        var map = new google.maps.Map(document.getElementById('map-canvas'),
        mapOptions);

        var drawingManager = new google.maps.drawing.DrawingManager({
            drawingMode: google.maps.drawing.OverlayType.MARKER,
            drawingControl: true,
            drawingControlOptions: {
                position: google.maps.ControlPosition.TOP_CENTER,
                drawingModes: [
                google.maps.drawing.OverlayType.CIRCLE]
            },
            circleOptions: {
                fillColor: '#ffff00',
                fillOpacity: 0.3,
                strokeWeight: 1,
                clickable: false,
                editable: true,
                zIndex: 1
            }
        });
        drawingManager.setMap(map);
        google.maps.event.addListener(drawingManager, 'circlecomplete', onCircleComplete);
    }

    function onCircleComplete(shape) {
        if (shape == null || (!(shape instanceof google.maps.Circle))) return;

        if (circle != null) {
            circle.setMap(null);
            circle = null;
        }

        circle = shape;
        console.log('radius', circle.getRadius());
        console.log('lat', circle.getCenter().lat());
        console.log('lng', circle.getCenter().lng());
    }

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