Files
openlayers/examples/polygon-styles.js
Tim Schaub 054af09032 Make code prettier
This updates ESLint and our shared eslint-config-openlayers to use Prettier.  Most formatting changes were automatically applied with this:

    npm run lint -- --fix

A few manual changes were required:

 * In `examples/offscreen-canvas.js`, the `//eslint-disable-line` comment needed to be moved to the appropriate line to disable the error about the `'worker-loader!./offscreen-canvas.worker.js'` import.
 * In `examples/webpack/exapmle-builder.js`, spaces could not be added after a couple `function`s for some reason.  While editing this, I reworked `ExampleBuilder` to be a class.
 * In `src/ol/format/WMSGetFeatureInfo.js`, the `// @ts-ignore` comment needed to be moved down one line so it applied to the `parsersNS` argument.
2020-04-06 12:54:09 -06:00

129 lines
2.7 KiB
JavaScript

import GeoJSON from '../src/ol/format/GeoJSON.js';
import Map from '../src/ol/Map.js';
import MultiPoint from '../src/ol/geom/MultiPoint.js';
import VectorLayer from '../src/ol/layer/Vector.js';
import VectorSource from '../src/ol/source/Vector.js';
import View from '../src/ol/View.js';
import {Circle as CircleStyle, Fill, Stroke, Style} from '../src/ol/style.js';
const styles = [
/* We are using two different styles for the polygons:
* - The first style is for the polygons themselves.
* - The second style is to draw the vertices of the polygons.
* In a custom `geometry` function the vertices of a polygon are
* returned as `MultiPoint` geometry, which will be used to render
* the style.
*/
new Style({
stroke: new Stroke({
color: 'blue',
width: 3,
}),
fill: new Fill({
color: 'rgba(0, 0, 255, 0.1)',
}),
}),
new Style({
image: new CircleStyle({
radius: 5,
fill: new Fill({
color: 'orange',
}),
}),
geometry: function (feature) {
// return the coordinates of the first ring of the polygon
const coordinates = feature.getGeometry().getCoordinates()[0];
return new MultiPoint(coordinates);
},
}),
];
const geojsonObject = {
'type': 'FeatureCollection',
'crs': {
'type': 'name',
'properties': {
'name': 'EPSG:3857',
},
},
'features': [
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [
[
[-5e6, 6e6],
[-5e6, 8e6],
[-3e6, 8e6],
[-3e6, 6e6],
[-5e6, 6e6],
],
],
},
},
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [
[
[-2e6, 6e6],
[-2e6, 8e6],
[0, 8e6],
[0, 6e6],
[-2e6, 6e6],
],
],
},
},
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [
[
[1e6, 6e6],
[1e6, 8e6],
[3e6, 8e6],
[3e6, 6e6],
[1e6, 6e6],
],
],
},
},
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [
[
[-2e6, -1e6],
[-1e6, 1e6],
[0, -1e6],
[-2e6, -1e6],
],
],
},
},
],
};
const source = new VectorSource({
features: new GeoJSON().readFeatures(geojsonObject),
});
const layer = new VectorLayer({
source: source,
style: styles,
});
const map = new Map({
layers: [layer],
target: 'map',
view: new View({
center: [0, 3000000],
zoom: 2,
}),
});