我正在尝试重新创建此处演示的平移限制行为: http://econym.org.uk/gmap/example_range.htm
不幸的是,它使用的是API版本2,而不是当前版本3。我正在更新命令以使其与当前版本兼容,但我认为可能错过了某些内容,因为它没有起作用:
<html>
<body>
<script type="text/javascript" src="http://meyouand.us/scripts/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
$(document).ready(function() {
// Generate map
var latlng = new google.maps.LatLng(37.76201, -122.4375);
var myOptions = { zoom: 12, center: latlng, panControl: false, zoomControl: true, mapTypeControl: false, streetViewControl: false, scrollwheel: true, draggable: true, mapTypeId: google.maps.MapTypeId.TERRAIN };
var map = new google.maps.Map(document.getElementById("gmap"), myOptions);
// Limit panning
// The allowed region which the whole map must be within
var southWest = new google.maps.LatLng(37.684, -122.591);
var northEast = new google.maps.LatLng(37.836, -122.333);
var allowedBounds = new google.maps.LatLngBounds(southWest, northEast);
// Double check boundaries, plot points just in case
var sW = new google.maps.Marker({
position: southWest,
map: map,
title: "southWest"
});
var nE = new google.maps.Marker({
position: northEast,
map: map,
title: "northEast"
});
// Add a move listener to restrict the bounds range
google.maps.event.addListener(map, "dragend", function() { checkBounds(); });
// If the map position is out of range, move it back
function checkBounds() {
// Perform the check and return if OK
if (allowedBounds.contains(map.getCenter())) {
return;
}
// It's not OK, so find the nearest allowed point and move there
var C = map.getCenter();
var X = C.lng();
var Y = C.lat();
var AmaxX = allowedBounds.getNorthEast().lng();
var AmaxY = allowedBounds.getNorthEast().lat();
var AminX = allowedBounds.getSouthWest().lng();
var AminY = allowedBounds.getSouthWest().lat();
if (X < AminX) {X = AminX; alert('hi') }
if (X > AmaxX) {X = AmaxX; alert('hi') }
if (Y < AminY) {Y = AminY; alert('hi') }
if (Y > AmaxY) {Y = AmaxY; alert('hi') }
alert ("Restricting "+Y+" "+X);
map.setCenter(new LatLng(Y,X));
}
});
</script>
<body>
<div id="gmap" style="width: 480px; height: 440px;"></div>
</body>
</html>
有没有人愿意帮我看看是否有遗漏的地方? :D
(在StackOverflow上有另一个最新的版本3的代码,名为“如何限制Google Maps API V3中的平移?”但是该行为在视觉上会“弹回”,而不仅仅是限制超出边界的移动。)