Files
openlayers/examples/wms-custom-tilegrid-512x256.js
2018-01-10 09:35:42 -07:00

44 lines
1.2 KiB
JavaScript

import Map from '../src/ol/Map.js';
import View from '../src/ol/View.js';
import * as _ol_extent_ from '../src/ol/extent.js';
import TileLayer from '../src/ol/layer/Tile.js';
import {get as getProjection} from '../src/ol/proj.js';
import _ol_source_OSM_ from '../src/ol/source/OSM.js';
import _ol_source_TileWMS_ from '../src/ol/source/TileWMS.js';
import TileGrid from '../src/ol/tilegrid/TileGrid.js';
var projExtent = getProjection('EPSG:3857').getExtent();
var startResolution = _ol_extent_.getWidth(projExtent) / 256;
var resolutions = new Array(22);
for (var i = 0, ii = resolutions.length; i < ii; ++i) {
resolutions[i] = startResolution / Math.pow(2, i);
}
var tileGrid = new TileGrid({
extent: [-13884991, 2870341, -7455066, 6338219],
resolutions: resolutions,
tileSize: [512, 256]
});
var layers = [
new TileLayer({
source: new _ol_source_OSM_()
}),
new TileLayer({
source: new _ol_source_TileWMS_({
url: 'https://ahocevar.com/geoserver/wms',
params: {'LAYERS': 'topp:states', 'TILED': true},
serverType: 'geoserver',
tileGrid: tileGrid
})
})
];
var map = new Map({
layers: layers,
target: 'map',
view: new View({
center: [-10997148, 4569099],
zoom: 4
})
});