HERE Maps API - How to pan the map
This article explains how to use the panning method on the map. Feel free to modify and utilize whole or partial for your own purposes!
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Prerequistites
Nokia Maps API supported web browser (basically any modern browser should do).
Example code
This example will start panning the map to the right, then after a moment changes direction to the left and continues forever(?) ;) Unless you stop it by pressing the button and clearing the timer and interval settings. Remember to add in your own AppId and Token to get it to work.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Panning the map</title>
<meta http-equiv="X-UA-Compatible" content="IE=7; IE=EmulateIE9"/>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<script type="text/javascript"
src="http://api.maps.nokia.com/2.2.4/jsl.js" charset="utf-8">
</script>
</head>
<body onload="all_is_ready()">
<div id="mapContainer" style="z-index: -1; left:0px; top:0px; width: 100%; height: 80%; position: absolute;"></div>
<div id="showCoords" style="height: 2.0em; font-size: 2em; color: blue;"></div>
<input type="button" value="STOP panning" name="button6" onclick="stopPanning()" />
<script type="text/javascript">
/////////////////////////////////////////////////////////////////////////////////////
// Don't forget to set your API credentials
//
// Replace with your appId and token which you can obtain when you
// register on http://api.developer.nokia.com/
//
nokia.Settings.set( "appId", "YOUR APP ID GOES HERE");
nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE");
//
/////////////////////////////////////////////////////////////////////////////////////
//Globals
var myInterval = 0;
var myTimer;
var map_start_x = 100;
var map_start_y = 100;
var map_end_x = 120;
var map_end_y = 100;
var myMap;
//if (document.addEventListener)
// document.addEventListener("DOMContentLoaded", all_is_ready, false);
function all_is_ready(){
alert("Click OK to start the panning.");
myMap = new nokia.maps.map.Display(document.getElementById("mapContainer"),
{
components: [ new nokia.maps.map.component.Behavior(),
new nokia.maps.map.component.ZoomBar(),
new nokia.maps.map.component.Overview(),
new nokia.maps.map.component.TypeSelector(),
new nokia.maps.map.component.ScaleBar() ],
zoomLevel: 3,
center: [19.119, 72.8957]
});
timerLauncher();
}
function timerLauncher()
{
// Start the timer
myInterval = setInterval ("panTheMap()", 1000);
}
function panTheMap()
{
map_start_x = map_start_x + 1;
map_start_y = map_start_y + 1;
map_end_x = map_end_x - 1;
map_end_y = map_end_y + 1;
document.getElementById("showCoords").innerHTML = "("+map_start_x+","+map_start_y+","+map_end_x+","+map_end_y+")";
myMap.pan(map_start_x, map_start_y, map_end_x, map_end_y);
myTimer = setTimeout ('document.getElementById("showCoords").innerHTML = ""', 500);
}
function stopPanning()
{
clearTimeout(myTimer);
clearInterval(myInterval);
alert("Timer and interval cleared. Example finished. Reload page to run again.");
}
</script>
</body>
</html>
Screenshot
For more on the Nokia Maps API
Please check out the Nokia Maps API full documentation and API reference here:
You may also access the interactive API explorer
Summary
Using the map panning feature you could create e.g. a game, where the map is moving and the user should e.g. find something on the map and click it before the area vanishes from sight, just an idea ;) develop your own =)? Side scrolling game...? =)
