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routeupdate.php
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<?
session_start();
$mid=$_SESSION['mid'];
mysql_connect("localhost","pool","pool") or die(mysql_error());
mysql_select_db("pool") or die(mysql_error());
$getlocation=mysql_query("select * from location where mid='$mid'") or die(mysql_error());
$row=mysql_fetch_array($getlocation);
$lat=$row['LATITUDE'];
$lon=$row['LONGITUDE'];
?>
<html>
<head>
<script src="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript" >
</script>
<script type="text/javascript">
var draggable={draggable:true,};
var routedisplay=new google.maps.DirectionsRenderer(draggable);
var directionsService=new google.maps.DirectionsService();
var latitude=<?echo $lat;?>;
var longitude=<?echo $lon;?>;
function initialize()
{
var center=new google.maps.LatLng(latitude,longitude);
var options={zoom:10,
center:center,
mapTypeId:google.maps.MapTypeId.ROADMAP,
};
var map=new google.maps.Map(document.getElementById('map'),options);
var pesit=new google.maps.LatLng(12.934332,77.534938);
var markerPESIT=new google.maps.Marker({
position:pesit,
map:map,
title:"PESIT",
icon:"PESIT.png",
shadow:"PESIT.png"
});
routedisplay.setMap(map);
callroute(center,pesit);
}
google.maps.event.addListener(routedisplay,'directions_changed',function(){
distance(routedisplay.directions);
});
function callroute(source,destination)
{
var request={
origin:source,
destination:destination,
travelMode:google.maps.DirectionsTravelMode.DRIVING
};
directionsService.route(request,function(result,status){
if(status==google.maps.DirectionsStatus.OK)
{
routedisplay.setDirections(result);
distance(result);
}});
}
function distance(result)
{
total=0;
var markers=[];
var count=0;
var route=result.routes[0];
var temp;
latitude=route.legs[0].start_location.lat();
longitude=route.legs[0].start_location.lng();
for(var i=0;i<route.legs.length;i++)
{
total+=route.legs[i].distance.value;
for(var j=0;j<route.legs[i].steps.length;j++)
{
if(route.legs[i].steps[j].distance.value>=300)
{
var pi=Math.PI;
var temp=route.legs[i].steps[j];
var dist=temp.distance.value;
var lat1=temp.start_location.lat();
var lng1=temp.start_location.lng();
var lat2=temp.end_location.lat();
var lng2=temp.end_location.lng();
split(lat1,lng1,lat2,lng2,dist)
function split(lat1,lng1,lat2,lng2,dist)
{
if(dist>=200)
{
dist=dist/2;
var dlng=(lng2-lng1)*pi/180;
var rlat1=lat1*pi/180;
var rlat2=lat2*pi/180;
var rlng1=lng1*pi/180;;
var rlng2=lng2*pi/180;
var x = Math.cos(rlat2)*Math.cos(dlng);
var y = Math.cos(rlat2)*Math.sin(dlng);
var rlat3 = Math.atan2(Math.sin(rlat1)+Math.sin(rlat2),
Math.sqrt((Math.cos(rlat1)+x)*(Math.cos(rlat1)+x)+y*y));
var rlng3 = rlng1 + Math.atan2(y, Math.cos(rlat1)+x);
lat3=(rlat3*180/pi).toFixed(6);
lng3=(rlng3*180/pi).toFixed(6);
var mid={lat:lat3,
lng:lng3
};
markers.push(mid);
split(lat1,lng1,lat3,lng3,dist);
split(lat3,lng3,lat2,lng2,dist);
}
}
}
else
markers.push(route.legs[i].steps[j].start_location);
}
}
markers=JSON.stringify(markers);
document.getElementById('lat').value=latitude;
document.getElementById('lng').value=longitude;
document.getElementById('markers').value=markers;
total=total/1000;
document.getElementById('total').value=total;
document.getElementById('distance').innerHTML=total+"km";
}
</script>
<title>Change</title>
<link rel="stylesheet" type="text/css" href="signup.css">
</head>
<body onload="initialize();">
<h1>At the same place?</h1>
<h1>Changes in the route?<font size='3'><Note:Drag to change<font size='2'><Note for a note:It will be easier if you zoom in first></font>></font></h1>
<p align="center">Estimated distance from your home to the college : <span id="distance"> </span></p>
<a href="javascript:location.reload()" style="position:absolute; top:16%;right:10%;">Undo</a>
<div id="map" style="position:fixed; left:5%; height:70%; width:90%"> </div>
<form name="form" method="post" action="routeupdate.php">
<input type="hidden" id="markers" name="markers">
<input type="hidden" id="lat" name="lat">
<input type="hidden" id="lng" name="lng">
<input type="hidden" id="total" name="total">
<input type="submit" style="position:fixed; bottom:3%; left:44%;" name="submit" value="Confirm">
</form>
</body>
</html>
<?
if(isset($_POST['submit']))
{
$var1="ROUTELAT";
$var2="ROUTELNG";
$markers=json_decode($_POST['markers'],true);
$latitude=$_POST['lat'];
$longitude=$_POST['lng'];
$total=$_POST['total'];
mysql_query("update location set LATITUDE=$latitude where mid='$mid'");
mysql_query("update location set LONGITUDE=$longitude where mid='$mid'");
mysql_query("update location set DISTANCE=$total where mid='$mid'");
for($i=1;$i<=42;$i++)
{
$name1=$var1.$i;
$name2=$var2.$i;
mysql_query("update location set $name1='' where mid='$mid'");
mysql_query("update location set $name2='' where mid='$mid'");
}//not required in this page..but required in the update page.
$j=1;
for($i=1;$i<count($markers);$i++)
{
$name1=$var1.$i;
$name2=$var2.$i;
foreach($markers[$i] as $key=>$value)
{
if($j==1)
{
$lat=$value;
$j++;
}
else if($j==2)
{
$lng=$value;
$j=1;
}
}
settype($lat,double);
settype($lng,double);
mysql_query("update location set $name1=$lat where mid='$mid'");
mysql_query("update location set $name2=$lng where mid='$mid'");
}
?>
<script>
window.location="home.php";
</script>
<?
}
?>