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| import GeoJSON from 'ol/format/GeoJSON.js';
import Map from 'ol/Map.js';
import View from 'ol/View.js';
import {OSM, Vector as VectorSource} from 'ol/source.js';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer.js';
const source = new VectorSource({
url: 'data/geojson/switzerland.geojson',
format: new GeoJSON(),
});
const vectorLayer = new VectorLayer({
source: source,
style: {
'fill-color': 'rgba(255, 255, 255, 0.6)',
'stroke-width': 1,
'stroke-color': '#319FD3',
'circle-radius': 5,
'circle-fill-color': 'rgba(255, 255, 255, 0.6)',
'circle-stroke-width': 1,
'circle-stroke-color': '#319FD3',
},
});
const view = new View({
center: [0, 0],
zoom: 1,
});
const map = new Map({
layers: [
new TileLayer({
source: new OSM(),
}),
vectorLayer,
],
target: 'map',
view: view,
});
const zoomtoswitzerland = document.getElementById('zoomtoswitzerland');
zoomtoswitzerland.addEventListener(
'click',
function () {
const feature = source.getFeatures()[0];
const polygon = feature.getGeometry();
view.fit(polygon, {padding: [170, 50, 30, 150]});
},
false
);
const zoomtolausanne = document.getElementById('zoomtolausanne');
zoomtolausanne.addEventListener(
'click',
function () {
const feature = source.getFeatures()[1];
const point = feature.getGeometry();
view.fit(point, {padding: [170, 50, 30, 150], minResolution: 50});
},
false
);
const centerlausanne = document.getElementById('centerlausanne');
centerlausanne.addEventListener(
'click',
function () {
const feature = source.getFeatures()[1];
const point = feature.getGeometry();
const size = map.getSize();
view.centerOn(point.getCoordinates(), size, [570, 500]);
},
false
);
|
)
