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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Calimoto GPX (rtept) to Google Maps Directions - Fixed Start/End</title>
<style>
body { font-family: Arial, sans-serif; margin: 2em; }
input[type="file"] { margin-bottom: 1em; }
#result { margin-top: 1em; }
a { word-break: break-word; }
</style>
</head>
<body>
<h1>Calimoto GPX (rtept) to Google Maps Directions (Fixed Start/End Point)</h1>
<input type="file" id="gpxfile" accept=".gpx" />
<div id="result"></div>
<script>
document.getElementById('gpxfile').addEventListener('change', function(event) {
const file = event.target.files[0];
if (!file) return;
// Define your new fixed start/end point
const startLat = 46.962153; // Your new latitude
const startLon = 7.446944; // Your new longitude
const startPoint = `${startLat},${startLon}`;
const reader = new FileReader();
reader.onload = function(e) {
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(e.target.result, "application/xml");
const routePoints = xmlDoc.getElementsByTagName('rtept');
if (routePoints.length < 3) {
document.getElementById('result').innerHTML = "Not enough <rtept> points in this file.";
return;
}
const coords = [];
// Skip first and last points
for (let i = 1; i < routePoints.length - 1; i++) {
const lat = routePoints[i].getAttribute('lat');
const lon = routePoints[i].getAttribute('lon');
coords.push(lat + "," + lon);
}
const MAX_WAYPOINTS = 23; // Google Maps limit: start + waypoints + end
let selectedCoords = [];
if (coords.length <= (MAX_WAYPOINTS - 2)) {
selectedCoords = coords;
} else {
// Shrink points smartly
const intermediatePoints = MAX_WAYPOINTS - 2; // 1 for start, 1 for end
const interval = coords.length / intermediatePoints;
for (let i = 1; i < intermediatePoints - 1; i++) {
const index = Math.round(i * interval);
if (index >= coords.length) break;
selectedCoords.push(coords[index]);
}
}
// Build final path: start -> route -> end
const fullCoords = [startPoint, ...selectedCoords, startPoint];
const baseUrl = "https://www.google.com/maps/dir/";
const url = baseUrl + fullCoords.join('/');
document.getElementById('result').innerHTML = `<p><strong>Directions Link:</strong></p><p><a href="${url}" target="_blank">${url}</a></p>`;
};
reader.readAsText(file);
});
</script>
</body>
</html>
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