iframe-proxy | Sunbelt Computer Software

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/* myLoc.js */

var watchId = null;

var map = null;

var ourCoords = {

latitude: 47.624851,

longitude: -122.52099

};

var prevCoords = null;

window.onload = getMyLocation;

function getMyLocation() {

if (navigator.geolocation) {

navigator.geolocation.getCurrentPosition(

displayLocation,

displayError,

{enableHighAccuracy: true, timeout:9000});

var watchButton = document.getElementById("watch");

watchButton.onclick = watchLocation;

var clearWatchButton = document.getElementById("clearWatch");

clearWatchButton.onclick = clearWatch;

}

else {

alert("Oops, no geolocation support");

}

function displayLocation(position) {

var latitude = position.coords.latitude;

var longitude = position.coords.longitude;

var div = document.getElementById("location");

div.innerHTML = "You are at Latitude: " + latitude + ", Longitude: " + longitude;

div.innerHTML += " (with " + position.coords.accuracy + " meters accuracy)";

var km = computeDistance(position.coords, ourCoords);

var distance = document.getElementById("distance");

distance.innerHTML = "You are " + km + " km from the WickedlySmart HQ";

if (map == null) {

showMap(position.coords);

prevCoords = position.coords;

}

else {

var meters = computeDistance(position.coords, prevCoords) * 1000;

if (meters > 20) {

scrollMapToPosition(position.coords);

prevCoords = position.coords;

}

// --------------------- Ready Bake ------------------

// Uses the Spherical Law of Cosines to find the distance

// between two lat/long points

function computeDistance(startCoords, destCoords) {

var startLatRads = degreesToRadians(startCoords.latitude);

var startLongRads = degreesToRadians(startCoords.longitude);

var destLatRads = degreesToRadians(destCoords.latitude);

var destLongRads = degreesToRadians(destCoords.longitude);

var Radius = 6371; // radius of the Earth in km

var distance = Math.acos(Math.sin(startLatRads) * Math.sin(destLatRads) +

Math.cos(startLatRads) * Math.cos(destLatRads) *

Math.cos(startLongRads - destLongRads)) * Radius;

return distance;

}

function degreesToRadians(degrees) {

radians = (degrees * Math.PI)/180;

return radians;

}

// ------------------ End Ready Bake -----------------

function showMap(coords) {

var googleLatAndLong = new google.maps.LatLng(coords.latitude,

coords.longitude);

var mapOptions = {

zoom: 10,

center: googleLatAndLong,

mapTypeId: google.maps.MapTypeId.ROADMAP

};

var mapDiv = document.getElementById("map");

map = new google.maps.Map(mapDiv, mapOptions);

// add the user marker

var title = "Your Location";

var content = "You are here: " + coords.latitude + ", " + coords.longitude;

addMarker(map, googleLatAndLong, title, content);

// add the WickedlySmart HQ marker

var wsLatLong = new google.maps.LatLng(

ourCoords.latitude,

ourCoords.longitude);

addMarker(map, wsLatLong, "WickedlySmart HQ",

"WickedlySmart HQ latitude: " +

ourCoords.latitude +

", longitude: " +

ourCoords.longitude);

}

function addMarker(map, latlong, title, content) {

var markerOptions = {

position: latlong,

map: map,

title: title,

clickable: true

};

var marker = new google.maps.Marker(markerOptions);

var infoWindowOptions = {

content: content,

position: latlong

};

var infoWindow = new google.maps.InfoWindow(infoWindowOptions);

google.maps.event.addListener(marker, 'click', function() {

infoWindow.open(map);

});

}

function displayError(error) {

var errorTypes = {

0: "Unknown error",

1: "Permission denied",

2: "Position is not available",

3: "Request timeout"

};

var errorMessage = errorTypes[error.code];

if (error.code == 0 || error.code == 2) {

errorMessage = errorMessage + " " + error.message;

}

var div = document.getElementById("location");

div.innerHTML = errorMessage;

}

// Code to watch the user's location

function watchLocation() {

watchId = navigator.geolocation.watchPosition(

displayLocation,

displayError,

{enableHighAccuracy: true, timeout:3000});

}

function scrollMapToPosition(coords) {

var latitude = coords.latitude;

var longitude = coords.longitude;

var latlong = new google.maps.LatLng(latitude, longitude);

map.panTo(latlong);

// add the new marker

addMarker(map, latlong, "Your new location", "You moved to: " +

latitude + ", " + longitude);

}

function clearWatch() {

if (watchId) {

navigator.geolocation.clearWatch(watchId);

watchId = null;

}

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PL/B Language Development and Support

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PL/B Language Development and Support

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