6ae6d0b835
Add optional extra stops to refine some non-parallel transforms Refine extent transforms use by Gratucule by using 32 points (8 per side) instead of the standard corners only transform Update Graticule class description with current limitations Correct projection extent in Mollweide example and revise opening zoom level correspondingly
43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
import Graticule from '../src/ol/layer/Graticule.js';
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import Map from '../src/ol/Map.js';
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import View from '../src/ol/View.js';
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import GeoJSON from '../src/ol/format/GeoJSON.js';
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import VectorLayer from '../src/ol/layer/Vector.js';
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import Projection from '../src/ol/proj/Projection.js';
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import VectorSource from '../src/ol/source/Vector.js';
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import {register} from '../src/ol/proj/proj4.js';
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import proj4 from 'proj4';
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proj4.defs('ESRI:53009', '+proj=moll +lon_0=0 +x_0=0 +y_0=0 +a=6371000 ' +
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'+b=6371000 +units=m +no_defs');
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register(proj4);
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// Configure the Sphere Mollweide projection object with an extent,
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// and a world extent. These are required for the Graticule.
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const sphereMollweideProjection = new Projection({
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code: 'ESRI:53009',
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extent: [-18019909.21177587, -9009954.605703328,
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18019909.21177587, 9009954.605703328],
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worldExtent: [-179, -89.99, 179, 89.99]
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});
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const map = new Map({
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keyboardEventTarget: document,
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layers: [
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new VectorLayer({
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source: new VectorSource({
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url: 'data/geojson/countries-110m.geojson',
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format: new GeoJSON()
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})
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}),
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new Graticule()
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],
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target: 'map',
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view: new View({
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center: [0, 0],
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projection: sphereMollweideProjection,
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zoom: 1
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})
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});
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