80 lines
2.1 KiB
JavaScript
80 lines
2.1 KiB
JavaScript
// NOCOMPILE
|
|
import _ol_Map_ from '../src/ol/Map.js';
|
|
import _ol_View_ from '../src/ol/View.js';
|
|
import _ol_layer_Image_ from '../src/ol/layer/Image.js';
|
|
import TileLayer from '../src/ol/layer/Tile.js';
|
|
import {fromLonLat} from '../src/ol/proj.js';
|
|
import _ol_source_Raster_ from '../src/ol/source/Raster.js';
|
|
import _ol_source_XYZ_ from '../src/ol/source/XYZ.js';
|
|
|
|
function flood(pixels, data) {
|
|
var pixel = pixels[0];
|
|
if (pixel[3]) {
|
|
var 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;
|
|
}
|
|
|
|
var key = 'pk.eyJ1IjoidHNjaGF1YiIsImEiOiJjaW5zYW5lNHkxMTNmdWttM3JyOHZtMmNtIn0.CDIBD8H-G2Gf-cPkIuWtRg';
|
|
var elevation = new _ol_source_XYZ_({
|
|
url: 'https://api.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.pngraw?access_token=' + key,
|
|
crossOrigin: 'anonymous',
|
|
transition: 0
|
|
});
|
|
|
|
var raster = new _ol_source_Raster_({
|
|
sources: [elevation],
|
|
operation: flood
|
|
});
|
|
|
|
var map = new _ol_Map_({
|
|
target: 'map',
|
|
layers: [
|
|
new TileLayer({
|
|
source: new _ol_source_XYZ_({
|
|
url: 'https://api.mapbox.com/styles/v1/tschaub/ciutc102t00c62js5fqd47kqw/tiles/256/{z}/{x}/{y}?access_token=' + key
|
|
})
|
|
}),
|
|
new _ol_layer_Image_({
|
|
opacity: 0.6,
|
|
source: raster
|
|
})
|
|
],
|
|
view: new _ol_View_({
|
|
center: fromLonLat([-122.3267, 37.8377]),
|
|
zoom: 11
|
|
})
|
|
});
|
|
|
|
var control = document.getElementById('level');
|
|
var 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;
|
|
});
|
|
|
|
var locations = document.getElementsByClassName('location');
|
|
for (var i = 0, ii = locations.length; i < ii; ++i) {
|
|
locations[i].addEventListener('click', relocate);
|
|
}
|
|
|
|
function relocate(event) {
|
|
var data = event.target.dataset;
|
|
var view = map.getView();
|
|
view.setCenter(fromLonLat(data.center.split(',').map(Number)));
|
|
view.setZoom(Number(data.zoom));
|
|
}
|