66 lines
1.3 KiB
JavaScript
66 lines
1.3 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import View from '../src/ol/View.js';
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import {defaults as defaultControls, Control} from '../src/ol/control.js';
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import TileLayer from '../src/ol/layer/Tile.js';
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import OSM from '../src/ol/source/OSM.js';
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//
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// Define rotate to north control.
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//
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/**
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* @constructor
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* @extends {module:ol/control/Control~Control}
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* @param {Object=} opt_options Control options.
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*/
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class RotateNorthControl extends Control {
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constructor(opt_options) {
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const options = opt_options || {};
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const button = document.createElement('button');
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button.innerHTML = 'N';
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const element = document.createElement('div');
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element.className = 'rotate-north ol-unselectable ol-control';
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element.appendChild(button);
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super({
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element: element,
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target: options.target
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});
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button.addEventListener('click', this.handleRotateNorth.bind(this), false);
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}
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handleRotateNorth() {
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this.getMap().getView().setRotation(0);
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}
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}
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//
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// Create map, giving it a rotate to north control.
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//
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const map = new Map({
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controls: defaultControls().extend([
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new RotateNorthControl()
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]),
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layers: [
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new TileLayer({
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source: new OSM()
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})
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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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zoom: 3,
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rotation: 1
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})
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});
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