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apps/pacer/README.md Normal file
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## Pacer
![icon](app.png)
Run with a virtual partner at your chosen pace, and export the GPX data
from the Bangle.js App Store.
## Usage
Pacer starts up with a menu.
* **Recording** - whether to record the run
* **Units** - imperial or metric
* **Lap** - the multiple of a mile or kilometer to use for splits
* **Dark mode** - use black or white background
* **Eco battery** - display will turn off after 10 seconds
* **Eco storage** - only record GPS position every 10 seconds
* **Steps** - display step count or cadence
* **Pacer** - pace of virtual partner
On selecting **Start**, GPS position will be detected. A run cannot be
started without a GPS fix. The watch touchscreen is disabled while the
app is running.
The app will run on Bangle.js 1 and 2, although use on Bangle.js 2 is not
recommended due to poor GPS accuracy.
On a Bangle.js 1, the top button reverses the screen colours, the middle
button starts, pauses or resumes a run, and the bottom button ends the run.
On a Bangle.js 2, a short press of the button starts, pauses or resumes a
run, and a long press (over 0.5 seconds, but under 2!) ends the run. Note
that holding the button for 2 seconds will exit back to the default clock
app.
## Downloading
GPX tracks can be downloaded using the
[App Loader](https://banglejs.com/apps/?id=pacer). Connect the
Bangle.js and click on the Pacer app's disk icon to see the tracks
available for downloading.
## Tips
For best results, only start a run when the satellite signal strength bar is
green.
Use the [Assisted GPS Updater](https://banglejs.com/apps/#AGPS) to improve
the time taken to get a GPS fix.
## Bugs
The eco settings are unlikely to be useful.
GPS track smoothing is accomplished simply by reducing the frequency with
which readings are taken, depending on signal strength.

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apps/pacer/interface.html Normal file
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<html>
<head>
<link rel="stylesheet" href="../../css/spectre.min.css">
</head>
<body>
<div id="tracks"></div>
<div class="container" id="toastcontainer" style="position:fixed; bottom:8px; left:0px; right:0px; z-index: 100;"></div>
<script src="../../core/lib/interface.js"></script>
<script src="../../core/js/ui.js"></script>
<script src="../../core/js/utils.js"></script>
<script>
var domTracks = document.getElementById("tracks");
var fileCache = new Map();
function saveGPX(track, title) {
// Output GPX
var gpx = `<?xml version="1.0" encoding="UTF-8"?>
<gpx creator="Bangle.js" version="1.1">
<metadata>
<time>${isoTime(track[0][0])}</time>
</metadata>
<trk>
<name>${title}</name>
<trkseg>`;
track.forEach(pt=>{
gpx += `
<trkpt lat="${pt[1]}" lon="${pt[2]}">
<ele>${pt[3]}</ele>
<time>${isoTime(pt[0])}</time>
</trkpt>`;
});
gpx += `
</trkseg>
</trk>
</gpx>`;
Util.saveFile(title+".gpx", "application/gpx+xml", gpx);
showToast("Download finished.", "success");
}
function trackLineToObject(l) {
if (l===undefined) return {};
return l.trim().split(",");
}
function isoTime(t) {
var td = new Date(Number(t));
var ti = td.toISOString();
return ti;
}
function downloadTrack(filename, callback) {
function onData(data) {
var lines = data.trim().split("\n");
var headers = lines.shift().split(",");
var track = lines.map(l=>trackLineToObject(l));
callback(track);
}
const data = fileCache.get(filename);
if (data) {
onData(data);
} else {
Util.showModal(`Downloading ${filename}...`);
Util.readStorageFile(filename, data => {
fileCache.set(filename, data);
onData(data);
Util.hideModal();
});
}
}
function downloadAll(trackList, cb) {
const tracks = trackList.slice();
const downloadOne = () => {
const track = tracks.pop();
if(!track) {
showToast("Finished downloading all.", "success");
return;
}
downloadTrack(
track.filename,
lines => {
cb(lines, `Bangle.js Track ${track.number}`);
downloadOne();
}
);
};
downloadOne();
}
function getTrackList() {
Util.showModal("Loading Track List...");
domTracks.innerHTML = "";
Puck.eval(`require("Storage").list(/^\\.pacer.*\\.csv$/,{sf:1})`,files=>{
var trackList = [];
var promise = Promise.resolve();
files.forEach(filename => {
promise = promise.then(()=>new Promise(resolve => {
var trackNo = filename.match(/^\.pacer(.*)\.csv$/)[1];
Util.showModal(`Loading Track ${trackNo}...`);
Puck.eval(`(${JSON.stringify(filename)})`, trackInfo=>{
console.log(filename," => ",trackInfo);
trackList.push({
filename : filename,
number : trackNo,
});
resolve();
});
}));
});
// ================================================
// When 'promise' completes we now have all the info in trackList
promise.then(() => {
var html = `
<div class="container">
<h2>Tracks</h2>
<div class="columns">\n`;
trackList.forEach(track => {
console.log("track", track);
const trackDate = new Date (track.number.slice(0,4) + '-' + track.number.slice(4,6) + '-' + track.number.slice (6,8))
const trackFullDate = trackDate.toDateString() + ' ' + track.number.slice(8,10) + ':' + track.number.slice(10,12) + ':' + track.number.slice (12,14)
html += `
<div class="column col-12">
<div class="card-header">
<div class="card-title h5">
${trackFullDate} &nbsp;
<button class="btn btn-primary" filename="${track.filename}" trackid="${track.number}" task="downloadgpx">Download GPX</button>
<button class="btn btn-default" filename="${track.filename}" trackid="${track.number}" task="delete">Delete</button>
</div>
<div class="card-subtitle">
&nbsp;
</div>
</div>
</div>
`;
});
if (trackList.length==0) {
html += `
<div class="column col-12">
<div class="card-header">
<div class="card-title h5">No tracks</div>
<div class="card-subtitle text-gray">No GPS tracks found</div>
</div>
</div>
`;
}
html += `
</div><!-- columns -->
<h2>Batch</h2>
<div class="form-group">
<button class="btn btn-primary" task="downloadgpx_all">Download all GPX</button>
</div>
</div>`;
domTracks.innerHTML = html;
Util.hideModal();
var buttons = domTracks.querySelectorAll("button");
for (var i=0;i<buttons.length;i++) {
buttons[i].addEventListener("click",event => {
var button = event.currentTarget;
var filename = button.getAttribute("filename");
var trackid = parseInt(button.getAttribute("trackid"));
var task = button.getAttribute("task");
if (!/_all$/.test(task) && (!filename || trackid===undefined)) return;
switch(task) {
case "delete":
Util.showModal(`Deleting ${filename}...`);
Util.eraseStorageFile(filename,()=>{
Util.hideModal();
getTrackList();
});
break;
case "downloadgpx":
downloadTrack(filename, track => saveGPX(track, `Bangle.js Track ${trackid}`));
break;
case "downloadgpx_all":
downloadAll(trackList, saveGPX);
break;
}
});
}
});
});
}
function onInit() {
getTrackList();
}
</script>
</body>
</html>

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apps/pacer/metadata.json Normal file
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{
"id": "pacer",
"name": "Pacer",
"version": "0.01",
"description": "Run with a virtual partner",
"icon": "app.png",
"tags": "run,running,fitness,outdoors,gps",
"supports": ["BANGLEJS","BANGLEJS2"],
"readme": "README.md",
"interface": "interface.html",
"storage": [
{"name":"pacer.app.js","url":"app.js"},
{"name":"pacer.img","url":"app-icon.js","evaluate":true}
],
"data": [
{"name":"pacer.json"},
{"wildcard":".pacer*.csv","storageFile":true}
]
}