var sunCircle = {
strokeColor: "#c3fc49",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#c3fc49",
fillOpacity: 0.35,
map: map,
center: userPosition,
radius: 1000, // in meters
editable:true
};
cityCircle = new google.maps.Circle(sunCircle);
cityCircle.bindTo('center', marker, 'position');
现在它的 Editable 是真的我们可以编辑圆,如果用户改变半径,我能得到半径吗?