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| import GeoJSON from 'ol/format/GeoJSON.js';
import Map from 'ol/Map.js';
import View from 'ol/View.js';
import {Circle as CircleStyle, Fill, Stroke, Style} from 'ol/style.js';
import {OSM, Vector as VectorSource} from 'ol/source.js';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer.js';
import {fromLonLat} from 'ol/proj.js';
const source = new VectorSource({
url: 'data/geojson/switzerland.geojson',
format: new GeoJSON(),
});
const style = new Style({
fill: new Fill({
color: 'rgba(255, 255, 255, 0.6)',
}),
stroke: new Stroke({
color: '#319FD3',
width: 1,
}),
image: new CircleStyle({
radius: 5,
fill: new Fill({
color: 'rgba(255, 255, 255, 0.6)',
}),
stroke: new Stroke({
color: '#319FD3',
width: 1,
}),
}),
});
const vectorLayer = new VectorLayer({
source: source,
style: style,
});
const view = new View({
center: fromLonLat([6.6339863, 46.5193823]),
padding: [170, 50, 30, 150],
zoom: 6,
});
const map = new Map({
layers: [
new TileLayer({
source: new OSM(),
}),
vectorLayer,
],
target: 'map',
view: view,
});
vectorLayer.getSource().on('featuresloadend', function () {
const zoomtoswitzerland = document.getElementById('zoomtoswitzerland');
zoomtoswitzerland.addEventListener(
'click',
function () {
const feature = source.getFeatures()[0];
const polygon = feature.getGeometry();
view.fit(polygon);
},
false
);
const centerlausanne = document.getElementById('centerlausanne');
centerlausanne.addEventListener(
'click',
function () {
const feature = source.getFeatures()[1];
const point = feature.getGeometry();
view.setCenter(point.getCoordinates());
},
false
);
});
|
)
