缩小时防止标记缩放

Question

I want a Google Maps marker to be on a fixed size on a certain zoom level, like in this example: http://jsfiddle.net/bryan_weaver/4rxqQ/

function initialize() {
var map;
var centerPosition = new google.maps.LatLng(38.713107, -90.42984);
var options = {
    zoom: 9,
    center: centerPosition,
    mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map($('#map')[0], options);

var icon = 'https://www.google.com/mapfiles/marker_black.png';
var iconBounds = constructBounds(38.713107, -90.42984);
var staticOverlay = new google.maps.GroundOverlay(icon, iconBounds);
staticOverlay.setMap(map);
}

function constructBounds(lat, lng){
var sw = new google.maps.LatLng(lat - .03, lng - .025)
var ne = new google.maps.LatLng(lat + .03, lng + .025)
return new google.maps.LatLngBounds(sw, ne);
}

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

But is there a more smooth solution than in above Jsfiddle?

Answer 1

Based on your comment: Yes, you can solve it with a marker, but there is no 'ready-to-use' option in the MarkerOptions. Instead of this you can add a zoom change listener and set a new scale for the marker icon. Instead of the GroundOverlay

var icon = 'https://www.google.com/mapfiles/marker_black.png';
var iconBounds = constructBounds(38.713107, -90.42984);
var staticOverlay = new google.maps.GroundOverlay(icon, iconBounds);
staticOverlay.setMap(map);

you would use a Marker

var icon = 'https://www.google.com/mapfiles/marker_black.png';
var marker = new google.maps.Marker({
    position: {
        lat: 38.713107,
        lng: -90.42984
    },
    map: map,
    icon: icon
});

Then you just add the zoom change listener and calculate a new size based on the zoom level:

//add a zoom change listener, so you can resize the icon based on the zoom level
google.maps.event.addListener(map, 'zoom_changed', function() {

    var zoom = map.getZoom();
    markerWidth = (zoom/9)*20
    markerHeight = (zoom/9)*34

    //set the icon with the new size to the marker
    marker.setIcon({
        url: icon,
        scaledSize: new google.maps.Size(markerWidth, markerHeight)
    });
});

Of course you can change the calculation so the icon size changes in a different way. I just created a quick example. I just updated your fiddle .