132 lines
4.2 KiB
JavaScript
132 lines
4.2 KiB
JavaScript
(function () {
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'use strict';
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const container = document.getElementById('campground_map');
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container.style.height = '80vh';
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const svg = container.childNodes[0];
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svg.remove();
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const latLngBounds = L.latLngBounds([[0, 0], [1192, 1500]]);
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const map = L.map(container, {
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center: latLngBounds.getCenter(),
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minZoom: -2,
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maxZoom: 2,
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zoom: -1,
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scrollWheelZoom: false,
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maxBounds: latLngBounds,
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maxBoundsViscosity: 1.0,
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zoomSnap: 0,
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crs: L.CRS.Simple,
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});
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map.fitBounds(latLngBounds);
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L.svgOverlay(svg, latLngBounds).addTo(map);
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// from https://github.com/jkroso/parse-svg-path/
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const parse = (function () {
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'use strict';
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const length = {a: 7, c: 6, h: 1, l: 2, m: 2, q: 4, s: 4, t: 2, v: 1, z: 0}
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const segment = /([astvzqmhlc])([^astvzqmhlc]*)/ig;
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const number = /-?[0-9]*\.?[0-9]+(?:e[-+]?\d+)?/ig;
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function parseValues(args) {
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const numbers = args.match(number)
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return numbers ? numbers.map(Number) : []
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}
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return function (path) {
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const data = []
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path.replace(segment, function (_, command, args) {
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let type = command.toLowerCase()
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args = parseValues(args)
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// overloaded moveTo
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if (type === 'm' && args.length > 2) {
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data.push([command].concat(args.splice(0, 2)))
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type = 'l'
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command = command === 'm' ? 'l' : 'L'
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}
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while (true) {
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if (args.length === length[type]) {
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args.unshift(command)
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return data.push(args)
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}
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if (args.length < length[type]) throw new Error('malformed path data')
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data.push([command].concat(args.splice(0, length[type])))
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}
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})
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return data
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}
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})();
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function highlightAccommodation(e) {
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const layer = e.target;
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layer.setStyle({
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color: '#ffe673',
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});
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layer.bringToFront();
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}
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function resetHighlight(e) {
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const layer = e.target;
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layer.setStyle({
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color: 'transparent',
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});
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}
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// XXX: this is from the “parceles” layer.
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const ctm = [1, 0, 0, 1, 83.2784, 66.1766];
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const transform = function (x, y) {
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return [ctm[0] * x + ctm[2] * y + ctm[4], ctm[1] * x + ctm[3] * y + ctm[5]];
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}
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const language = document.documentElement.getAttribute('lang');
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const prefix = 'cp_';
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for (const campsite of Array.from(container.querySelectorAll(`[id^="${prefix}"]`))) {
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const label = campsite.id.substring(prefix.length);
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if (!label) {
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continue;
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}
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const path = campsite.firstElementChild;
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const commands = parse(path.getAttribute('d'));
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const points = [];
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const p0 = [0, 0];
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for (const cmd of commands) {
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switch (cmd[0]) {
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case 'M':
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case 'L':
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const cmdM = transform(cmd[1], cmd[2]);
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p0[0] = cmdM[0];
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p0[1] = latLngBounds.getNorth() - cmdM[1];
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break;
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case 'm':
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case 'l':
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p0[0] += cmd[1];
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p0[1] -= cmd[2];
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break;
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case 'C':
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const cmdC = transform(cmd[5], cmd[6]);
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p0[0] = cmdC[0];
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p0[1] = latLngBounds.getNorth() - cmdC[1];
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break;
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case 'Z':
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case 'z':
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continue;
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default:
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console.error(cmd);
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}
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points.push([p0[1], p0[0]]);
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}
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const accommodation = L.polygon(points, {color: 'transparent'}).addTo(map);
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accommodation.on({
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mouseover: highlightAccommodation,
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mouseout: resetHighlight,
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click: function () {
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window.location = `/${language}/campsites/${label}`;
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},
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})
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}
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})();
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