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index.html
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index.html
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<!doctype html>
<html>
<head>
<title>Nearby</title>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<meta name="Copyright" content="© 2013, Intel Corporation. All rights reserved." />
<meta name="Author" content="Rakshith Krishnappa" />
<!--
* Copyright (c) 2013, Intel Corporation. All rights reserved.
* Please see http://software.intel.com/html5/license/samples
* and the included README.md file for license terms and conditions.
-->
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="apple-mobile-web-app-capable" content="yes" />
<script src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script src="lib/jquery/jquery-1.8.2.min.js"></script>
<script src="cordova.js"></script>
<script>
var pin = [
{"name":"New York", "lat":"40.714353", "lng":"-74.005973"},
{"name":"San Francisco", "lat":"37.77493", "lng":"-122.419416"},
{"name":"Seattle", "lat":"47.60621", "lng":"-122.332071"},
{"name":"Los Angeles", "lat":"34.052234", "lng":"-118.243685"},
{"name":"Denver", "lat":"39.737567", "lng":"-104.984718"},
{"name":"Chicago", "lat":"41.878114", "lng":"-87.629798"},
{"name":"Austin", "lat":"30.267153", "lng":"-97.743061"},
{"name":"Miami", "lat":"25.788969", "lng":"-80.226439"},
{"name":"Pittsburg", "lat":"40.440625", "lng":"-79.995886"},
{"name":"Phoenix", "lat":"33.448377", "lng":"-112.074037"},
{"name":"Atlanta", "lat":"33.748995", "lng":"-84.387982"},
{"name":"Kansas City", "lat":"39.099727", "lng":"-94.578567"}
];
var markersArray = [], bounds;
var myLat = 0, myLng = 0;
var bearing, distance;
var dataStatus = 0;
// setup map and listen to deviceready
$( document ).ready(function() {
document.addEventListener("deviceready", onDeviceReady, false);
});
// start device compass, accelerometer and geolocation after deviceready
function onDeviceReady() {
navigator.splashscreen.hide();
setupMap();
// start cordova device sensors
startAccelerometer();
startCompass();
startGeolocation();
}
// setup google maps api
function setupMap(){
$("#map").height($(window).height()-60);
var mapOptions = {
zoom: 13,
mapTypeControl: false,
streetViewControl: false,
navigationControl: true,
scrollwheel: false,
navigationControlOptions: {style: google.maps.NavigationControlStyle.SMALL},
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map"), mapOptions);
}
// toggle between list view and map view
function toggleView(){
if($(".listView").is(":visible")){
$(".listView").hide();
$("#map").height($(window).height()-60);
$(".mapView").fadeIn(function(){google.maps.event.trigger(map, "resize");map.fitBounds(bounds);});
$("#viewbtn").html("List");
} else {
$(".mapView").hide();
$(".listView").fadeIn();
$("#viewbtn").html("Map");
}
}
// get data from API and store in array, add to list view and create markers on map, calculate
function loadData(){
dataStatus = "loading";
markersArray = [];
bounds = new google.maps.LatLngBounds();
// add blue gps marker
var icon = new google.maps.MarkerImage('http://www.google.com/intl/en_us/mapfiles/ms/micons/blue-dot.png',new google.maps.Size(30, 28),new google.maps.Point(0,0),new google.maps.Point(9, 28));
var gpsMarker = new google.maps.Marker({position: new google.maps.LatLng(myLat, myLng), map: map, title: "My Position", icon:icon});
bounds.extend(new google.maps.LatLng(myLat, myLng));
markersArray.push(gpsMarker);
// add all location markers to map and list view and array
for(var i=0; i< pin.length; i++){
$(".listItems").append("<div class='item'>"+pin[i].name+"</div>");
addMarker(i);
relativePosition(i);
}
map.fitBounds(bounds);
google.maps.event.trigger(map, "resize");
dataStatus = "loaded";
}
// add marker to map and in array
function addMarker(i){
var marker = new google.maps.Marker({position: new google.maps.LatLng(pin[i].lat, pin[i].lng), map: map, title: pin[i].name});
bounds.extend(new google.maps.LatLng(pin[i].lat, pin[i].lng));
markersArray.push(marker);
}
// clear all markers from map and array
function clearMarkers() {
while (markersArray.length) {
markersArray.pop().setMap(null);
}
}
// calulate distance and bearing value for each of the points wrt gps lat/lng
function relativePosition(i){
var pinLat = pin[i].lat;
var pinLng = pin[i].lng;
var dLat = (myLat-pinLat)* Math.PI / 180;
var dLon = (myLng-pinLng)* Math.PI / 180;
var lat1 = pinLat * Math.PI / 180;
var lat2 = myLat * Math.PI / 180;
var y = Math.sin(dLon) * Math.cos(lat2);
var x = Math.cos(lat1)*Math.sin(lat2) - Math.sin(lat1)*Math.cos(lat2)*Math.cos(dLon);
bearing = Math.atan2(y, x) * 180 / Math.PI;
bearing = bearing + 180;
pin[i]['bearing'] = bearing;
var a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.sin(dLon/2) * Math.sin(dLon/2) * Math.cos(lat1) * Math.cos(lat2);
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
distance = 3958.76 * c;
pin[i]['distance'] = distance;
}
// calculate direction of points and display
function calculateDirection(degree){
var detected = 0;
$("#spot").html("");
for(var i=0;i<pin.length;i++){
if(Math.abs(pin[i].bearing - degree) <= 20){
var away, fontSize, fontColor;
// varry font size based on distance from gps location
if(pin[i].distance>1500){
away = Math.round(pin[i].distance);
fontSize = "16";
fontColor = "#ccc";
} else if(pin[i].distance>500){
away = Math.round(pin[i].distance);
fontSize = "24";
fontColor = "#ddd";
} else {
away = pin[i].distance.toFixed(2);
fontSize = "30";
fontColor = "#eee";
}
$("#spot").append('<div class="name" data-id="'+i+'" style="margin-left:'+(((pin[i].bearing - degree) * 5)+50)+'px;width:'+($(window).width()-100)+'px;font-size:'+fontSize+'px;color:'+fontColor+'">'+pin[i].name+'<div class="distance">'+ away +' miles away</div></div>');
detected = 1;
} else {
if(!detected){
$("#spot").html("");
}
}
}
}
// Start watching the geolocation
function startGeolocation(){
var options = { timeout: 30000 };
watchGeoID = navigator.geolocation.watchPosition(onGeoSuccess, onGeoError, options);
}
// Stop watching the geolocation
function stopGeolocation() {
if (watchGeoID) {
navigator.geolocation.clearWatch(watchGeoID);
watchGeoID = null;
}
}
// onSuccess: Get the current location
function onGeoSuccess(position) {
document.getElementById('geolocation').innerHTML = 'Latitude: ' + position.coords.latitude + '<br />' + 'Longitude: ' + position.coords.longitude;
myLat = position.coords.latitude;
myLng = position.coords.longitude;
if(!dataStatus){
loadData();
}
}
// onError: Failed to get the location
function onGeoError() {
document.getElementById('log').innerHTML += "onError=.";
}
// Start watching the compass
function startCompass() {
var options = { frequency: 100 };
watchCompassID = navigator.compass.watchHeading(onCompassSuccess, onCompassError, options);
}
// Stop watching the compass
function stopCompass() {
if (watchCompassID) {
navigator.compass.clearWatch(watchCompassID);
watchCompassID = null;
}
}
// onSuccess: Get the current heading
function onCompassSuccess(heading) {
var directions = ['N', 'NE', 'E', 'SE', 'S', 'SW', 'W', 'NW', 'N'];
var direction = directions[Math.abs(parseInt((heading.magneticHeading) / 45) + 1)];
document.getElementById('compass').innerHTML = heading.magneticHeading + "<br>" + direction;
document.getElementById('direction').innerHTML = direction;
var degree = heading.magneticHeading;
if($("#arView").is(":visible") && dataStatus != "loading"){
calculateDirection(degree);
}
}
// onError: Failed to get the heading
function onCompassError(compassError) {
document.getElementById('log').innerHTML += "onError=."+compassError.code;
}
// Start checking the accelerometer
function startAccelerometer() {
var options = { frequency: 100 };
watchAccelerometerID = navigator.accelerometer.watchAcceleration(onAccelerometerSuccess, onAccelerometerError, options);
}
// Stop checking the accelerometer
function stopAccelerometer() {
if (watchAccelerometerID) {
navigator.accelerometer.clearWatch(watchAccelerometerID);
watchAccelerometerID = null;
}
}
// onSuccess: Get current accelerometer values
function onAccelerometerSuccess(acceleration) {
// for debug purpose to print out accelerometer values
var element = document.getElementById('accelerometer');
element.innerHTML = 'Acceleration X: ' + acceleration.x + '<br />' +
'Acceleration Y: ' + acceleration.y + '<br />' +
'Acceleration Z: ' + acceleration.z ;
if(acceleration.y > 7){
$("#arView").fadeIn();
$("#topView").hide();
document.getElementById('body').style.background = "#d22";
} else {
$("#arView").hide();
$("#topView").fadeIn();
document.getElementById('body').style.background = "#fff";
}
}
// onError: Failed to get the acceleration
function onAccelerometerError() {
document.getElementById('log').innerHTML += "onError.";
}
</script>
<style>
body {background-color:#fff;font-family:Arial;margin:0;overflow-x:hidden;-webkit-user-select: none;}
.navbar {background-color:#222;height:40px;padding:10px;text-align:center;color:#fff;font-size:20px;font-weight:bold;line-height:40px;}
.navtitle {text-align:center;margin:auto}
.navbtn {background-color:#333;padding:5px 10px;height:30px;color:#fff;font-size:18px;font-weight:bold;line-height:30px;border-radius:4px;border:1px solid #666}
#actionbtn {float:right;}
#viewbtn {float:left;}
.query {padding:10px;background-color:#aaa;border-bottom:1px solid #fff;font-size:14px;font-weight:bold;color:#222;}
.item {padding:20px 10px; background-color:#eee;border-bottom:1px solid #fff;font-size:18px;color:#333;text-shadow:0 1px #fff}
.searchbox {padding:5px;background-color:#eee;border-bottom:1px solid #fff;}
#search {box-sizing: border-box;width:100%;height:40px;font-size:16px;border-radius:20px;border:1px solid #bbb}
.mapView {display:none}
#map {height:200px;}
#arView, #topView {display:none;}
#arView{padding:30px 0; height:70px;text-align:center}
.arMessage {color:#ddd;font-size:14px}
#spot {text-align:center}
.name, .distance {text-shadow:0 1px #666}
.name {padding:15px;font-weight:bold;;background-color:#c22;border-radius:40px;margin-bottom:10px}
#direction {color:#d55;font-size:20px;padding:15px;font-weight:bold;;background-color:#a22;border-radius:40px;display:inline-block;margin-bottom:10px;width:40px;line-height:40px}
.distance {font-size:14px;font-weight:normal;}
#debug {border:1px solid #999;display:none}
.heading {background-color:#999;color:#eee;padding:5px;}
#compass, #accelerometer, #geolocation {padding:5px}
</style>
</head>
<body id="body">
<div id="arView">
<div class="arMessage">↑<br>Tilt down to see all places</div>
<br>
<div class="arMessage">← Move the device around to find spots →</div>
<br>
<div id="direction"></div>
<br>
<div id="spot"></div>
</div>
<div id="topView">
<div class="navbar">
<div id="actionbtn" class="navbtn"> ↵ </div>
<div id="viewbtn" class="navbtn" onclick="toggleView()">Map</div>
<div class="navtitle">Nearby</div>
</div>
<div class="listView">
<div class="listItems"></div>
</div>
<div class="mapView">
<div id="map"></div>
</div>
</div>
<div id="debug">
<div class="heading">Geolocation</div>
<div id="geolocation"></div>
<div class="heading">Compass</div>
<div id="compass"></div>
<div class="heading">Accelerometer</div>
<div id="accelerometer"></div>
<div class="heading">Log</div>
<div id="log"></div>
</div>
</body>
</html>