054af09032
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.
56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import OSM from '../src/ol/source/OSM.js';
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import TileLayer from '../src/ol/layer/Tile.js';
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import View from '../src/ol/View.js';
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const osm = new TileLayer({
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source: new OSM(),
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});
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const map = new Map({
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layers: [osm],
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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: 2,
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}),
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});
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osm.on('prerender', function (event) {
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const ctx = event.context;
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// calculate the pixel ratio and rotation of the canvas
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const matrix = event.inversePixelTransform;
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const canvasPixelRatio = Math.sqrt(
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matrix[0] * matrix[0] + matrix[1] * matrix[1]
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);
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const canvasRotation = -Math.atan2(matrix[1], matrix[0]);
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ctx.save();
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// center the canvas and remove rotation to position clipping
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ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2);
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ctx.rotate(-canvasRotation);
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ctx.scale(3 * canvasPixelRatio, 3 * canvasPixelRatio);
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ctx.translate(-75, -80);
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ctx.beginPath();
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ctx.moveTo(75, 40);
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ctx.bezierCurveTo(75, 37, 70, 25, 50, 25);
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ctx.bezierCurveTo(20, 25, 20, 62.5, 20, 62.5);
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ctx.bezierCurveTo(20, 80, 40, 102, 75, 120);
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ctx.bezierCurveTo(110, 102, 130, 80, 130, 62.5);
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ctx.bezierCurveTo(130, 62.5, 130, 25, 100, 25);
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ctx.bezierCurveTo(85, 25, 75, 37, 75, 40);
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ctx.clip();
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ctx.translate(75, 80);
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ctx.scale(1 / 3 / canvasPixelRatio, 1 / 3 / canvasPixelRatio);
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// reapply canvas rotation and position
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ctx.rotate(canvasRotation);
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ctx.translate(-ctx.canvas.width / 2, -ctx.canvas.height / 2);
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});
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osm.on('postrender', function (event) {
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const ctx = event.context;
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ctx.restore();
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});
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