Files
openlayers/examples/overlay.js
2013-03-24 20:30:12 +01:00

46 lines
1.2 KiB
JavaScript

goog.require('ol.Coordinate');
goog.require('ol.Map');
goog.require('ol.Overlay');
goog.require('ol.RendererHints');
goog.require('ol.View2D');
goog.require('ol.layer.TileLayer');
goog.require('ol.projection');
goog.require('ol.source.MapQuestOpenAerial');
var layer = new ol.layer.TileLayer({
source: new ol.source.MapQuestOpenAerial()
});
var map = new ol.Map({
layers: [layer],
renderers: ol.RendererHints.createFromQueryData(),
target: 'map',
view: new ol.View2D({
center: new ol.Coordinate(0, 0),
zoom: 2
})
});
// Vienna label
var vienna = new ol.Overlay({
map: map,
position: ol.projection.transform(
new ol.Coordinate(16.3725, 48.208889), 'EPSG:4326', 'EPSG:3857'),
element: document.getElementById('vienna')
});
// Popup showing the position the user clicked
var popup = new ol.Overlay({
map: map,
element: document.getElementById('popup')
});
map.addEventListener('click', function(evt) {
var coordinate = evt.getCoordinate();
popup.getElement().innerHTML =
'Welcome to ol3. The location you clicked was<br>' +
ol.Coordinate.toStringHDMS(ol.projection.transform(
coordinate, 'EPSG:3857', 'EPSG:4326'));
popup.setPosition(coordinate);
});