forked from La_Bureautique/zeg1jeux
84 lines
2.0 KiB
JavaScript
84 lines
2.0 KiB
JavaScript
function fmod (x, y) {
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// discuss at: https://locutus.io/php/fmod/
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// original by: Onno Marsman (https://twitter.com/onnomarsman)
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// input by: Brett Zamir (https://brett-zamir.me)
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// bugfixed by: Kevin van Zonneveld (https://kvz.io)
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// example 1: fmod(5.7, 1.3)
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// returns 1: 0.5
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let tmp
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let tmp2
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let p = 0
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let pY = 0
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let l = 0.0
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let l2 = 0.0
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tmp = x.toExponential().match(/^.\.?(.*)e(.+)$/)
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p = parseInt(tmp[2], 10) - (tmp[1] + '').length
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tmp = y.toExponential().match(/^.\.?(.*)e(.+)$/)
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pY = parseInt(tmp[2], 10) - (tmp[1] + '').length
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if (pY > p) {
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p = pY
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}
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tmp2 = (x % y)
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if (p < -100 || p > 20) {
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// toFixed will give an out of bound error so we fix it like this:
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l = Math.round(Math.log(tmp2) / Math.log(10))
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l2 = Math.pow(10, l)
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return (tmp2 / l2).toFixed(l - p) * l2
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} else {
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return parseFloat(tmp2.toFixed(-p))
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}
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}
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const TAILLE_SPRITE = 32;
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var places = document.getElementsByClassName('place');
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var map = document.getElementById('map');
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var origLat = map.getAttribute('data-orig-lat');
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var origLon = map.getAttribute('data-orig-lon');
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var radius = map.getAttribute('data-radius');
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function computeLatDistanceInKm (dest, orig) {
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// Approximation française
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return ((dest - orig) * 111);
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}
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function computeLonDistanceInKm (dest, orig) {
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// Approximation française
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return ((dest - orig) * 79);
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}
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// Position places on map
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for (place of places) {
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var placeLat = place.getAttribute("data-place-lat");
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var placeLon = place.getAttribute("data-place-lon");
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var latDistanceKm = computeLatDistanceInKm(placeLat, origLat);
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var lonDistanceKm = computeLonDistanceInKm(placeLon, origLon);
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var latDistancePcts = latDistanceKm / (2 * radius) * 100;
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var lonDistancePcts = lonDistanceKm / (2 * radius) * 100;
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var leftPcts = 50 + lonDistancePcts;
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var topPcts = 50 - latDistancePcts;
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var cssLeft = 'calc(' + leftPcts + '% - ' + (TAILLE_SPRITE / 2) + 'px)';
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var cssTop = 'calc(' + topPcts + '% - ' + (TAILLE_SPRITE / 2) + 'px)';
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place.style.left = cssLeft;
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place.style.top = cssTop;
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}
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