Ole-Morten Duesund
e8428de775
Vite + TypeScript PWA that mirrors the Android app's core features: - Pre-processed shelter data (build-time UTM33N→WGS84 conversion) - Leaflet map with shelter markers, user location, and offline tiles - Canvas compass arrow (ported from DirectionArrowView.kt) - IndexedDB shelter cache with 7-day staleness check - Service worker with CacheFirst tiles and precached app shell - i18n for en, nb, nn (ported from Android strings.xml) - iOS/Android compass handling with low-pass filter - Respects user map interaction (no auto-snap on pan/zoom) - Build revision cache-breaker for reliable SW updates Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
import Browser from '../../core/Browser';
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// @namespace SVG; @section
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// There are several static functions which can be called without instantiating L.SVG:
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// @function create(name: String): SVGElement
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// Returns a instance of [SVGElement](https://developer.mozilla.org/docs/Web/API/SVGElement),
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// corresponding to the class name passed. For example, using 'line' will return
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// an instance of [SVGLineElement](https://developer.mozilla.org/docs/Web/API/SVGLineElement).
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export function svgCreate(name) {
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return document.createElementNS('http://www.w3.org/2000/svg', name);
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}
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// @function pointsToPath(rings: Point[], closed: Boolean): String
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// Generates a SVG path string for multiple rings, with each ring turning
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// into "M..L..L.." instructions
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export function pointsToPath(rings, closed) {
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var str = '',
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i, j, len, len2, points, p;
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for (i = 0, len = rings.length; i < len; i++) {
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points = rings[i];
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for (j = 0, len2 = points.length; j < len2; j++) {
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p = points[j];
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str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
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}
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// closes the ring for polygons; "x" is VML syntax
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str += closed ? (Browser.svg ? 'z' : 'x') : '';
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}
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// SVG complains about empty path strings
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return str || 'M0 0';
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}
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