Files
openlayers/examples/sea-level.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

90 lines
2.3 KiB
JavaScript

import Map from '../src/ol/Map.js';
import View from '../src/ol/View.js';
import XYZ from '../src/ol/source/XYZ.js';
import {Image as ImageLayer, Tile as TileLayer} from '../src/ol/layer.js';
import {Raster as RasterSource, TileJSON} from '../src/ol/source.js';
import {fromLonLat} from '../src/ol/proj.js';
function flood(pixels, data) {
const pixel = pixels[0];
if (pixel[3]) {
const height =
-10000 + (pixel[0] * 256 * 256 + pixel[1] * 256 + pixel[2]) * 0.1;
if (height <= data.level) {
pixel[0] = 145;
pixel[1] = 175;
pixel[2] = 186;
pixel[3] = 255;
} else {
pixel[3] = 0;
}
}
return pixel;
}
const key =
'pk.eyJ1IjoidHNjaGF1YiIsImEiOiJjaW5zYW5lNHkxMTNmdWttM3JyOHZtMmNtIn0.CDIBD8H-G2Gf-cPkIuWtRg';
const elevation = new TileLayer({
source: new XYZ({
url:
'https://api.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.pngraw?access_token=' +
key,
crossOrigin: 'anonymous',
}),
});
elevation.on('prerender', function (evt) {
evt.context.imageSmoothingEnabled = false;
evt.context.msImageSmoothingEnabled = false;
});
const raster = new RasterSource({
sources: [elevation],
operation: flood,
});
const map = new Map({
target: 'map',
layers: [
new TileLayer({
source: new TileJSON({
url:
'https://api.tiles.mapbox.com/v4/mapbox.world-light.json?secure&access_token=' +
key,
crossOrigin: 'anonymous',
}),
}),
new ImageLayer({
opacity: 0.6,
source: raster,
}),
],
view: new View({
center: fromLonLat([-122.3267, 37.8377]),
zoom: 11,
}),
});
const control = document.getElementById('level');
const output = document.getElementById('output');
control.addEventListener('input', function () {
output.innerText = control.value;
raster.changed();
});
output.innerText = control.value;
raster.on('beforeoperations', function (event) {
event.data.level = control.value;
});
const locations = document.getElementsByClassName('location');
for (let i = 0, ii = locations.length; i < ii; ++i) {
locations[i].addEventListener('click', relocate);
}
function relocate(event) {
const data = event.target.dataset;
const view = map.getView();
view.setCenter(fromLonLat(data.center.split(',').map(Number)));
view.setZoom(Number(data.zoom));
}