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compass
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Use native altutude data

master
Keith Irwin 2017-08-07 11:15:51 -04:00
parent 4a60f87a13
commit b78f6513de
2 changed files with 15 additions and 51 deletions
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4
index.html
View File

@ -50,8 +50,7 @@
<div class='coord' id='lat'>0.00000 N</div>
<div class='coord' id='lon'>0.00000 E</div>
<div class='coord' id='alt'>0.0 m</div>
<div class='error' id='no-alt'>No altitude data available. </div>
<div class='coord' id='alt'></div>
</header>
@ -71,7 +70,6 @@
</footer>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAnM0oMEWtnYTEaHURDQTt6BK5BuGGH2E4"></script>
<script src="script.js"></script>
</body>

62
script.js
View File

@ -1,5 +1,5 @@
'use strict';
/* global navigator google $ */
/* global navigator $ */
// Set units based on browser locale
const metric = !(window.navigator.language=='en-US'||window.navigator.language=='my');
@ -10,13 +10,19 @@ else { navigator.geolocation.watchPosition(
// Got location
function(pos) {
setAltitude(pos.coords.latitude, pos.coords.longitude);
var lat = pos.coords.latitude.toFixed(4);
var lon = pos.coords.longitude.toFixed(4);
lat = (lat.substring(0,1)=='-')? lat.substring(1)+' S' : lat+' N';
lon = (lon.substring(0,1)=='-')? lon.substring(1)+' E' : lon+' W';
$('#lat').text(lat);
$('#lon').text(lon);
let lat = pos.coords.latitude.toFixed(4);
let lon = pos.coords.longitude.toFixed(4);
$('#lat').text((lat.substring(0,1)=='-')? lat.substring(1)+' S' : lat+' N');
$('#lon').text((lon.substring(0,1)=='-')? lon.substring(1)+' E' : lon+' W');
// Get altitude
if (pos.coords.altitude){
var alt = (metric)? pos.coords.altitude.toFixed(1)+' m':(pos.coords.altitude*0.3048).toFixed(1)+' ft';
$('#alt').show().text(alt);
}
else {
$('#alt').hide();
}
},
// Got error
@ -32,46 +38,6 @@ else { navigator.geolocation.watchPosition(
);
}
// Set altitude
function setAltitude(lat,lon) {
// Create elevator
if (typeof elevator == 'undefined') {
var elevator = new google.maps.ElevationService;
}
// Query API
else {
elevator.getElevationForLocations({
'locations': [ new google.maps.LatLng(lat,lon) ]
}, function(res) {
// Show error
if (!res[0].elevation) {
if (res.status && res.status!='OK') {
$('#no-alt').text('No altitude data available: '+res.status+'. ');
}
$('#no-alt').show();
}
// Successfully got altitude
else {
$('#no-alt').hide();
var alt = res[0].elevation;
// Convert
if (metric) { alt=alt.toFixed(1)+' m'; }
else { alt=(alt*0.3048).toFixed(1)+' ft'; }
// Set element text
$('#alt').text(alt);
}
});
}
}
// Set compass orientation
function setRose(e) {