46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
goog.require('ol.Map');
|
|
goog.require('ol.View2D');
|
|
goog.require('ol.extent');
|
|
goog.require('ol.layer.Tile');
|
|
goog.require('ol.proj');
|
|
goog.require('ol.source.OSM');
|
|
|
|
|
|
var map = new ol.Map({
|
|
layers: [
|
|
new ol.layer.Tile({
|
|
source: new ol.source.OSM()
|
|
})
|
|
],
|
|
renderer: exampleNS.getRendererFromQueryString(),
|
|
target: 'map',
|
|
view: new ol.View2D({
|
|
center: [0, 0],
|
|
zoom: 2
|
|
})
|
|
});
|
|
|
|
function display(id, value) {
|
|
document.getElementById(id).value = value.toFixed(2);
|
|
}
|
|
|
|
function wrapLon(value) {
|
|
var worlds = Math.floor((value + 180) / 360);
|
|
return value - (worlds * 360);
|
|
}
|
|
|
|
function onMoveEnd(evt) {
|
|
var map = evt.map;
|
|
var extent = map.getView().calculateExtent(map.getSize());
|
|
var bottomLeft = ol.proj.transform(ol.extent.getBottomLeft(extent),
|
|
'EPSG:3857', 'EPSG:4326');
|
|
var topRight = ol.proj.transform(ol.extent.getTopRight(extent),
|
|
'EPSG:3857', 'EPSG:4326');
|
|
display('left', wrapLon(bottomLeft[0]));
|
|
display('bottom', bottomLeft[1]);
|
|
display('right', wrapLon(topRight[0]));
|
|
display('top', topRight[1]);
|
|
}
|
|
|
|
map.on('moveend', onMoveEnd);
|