[Google Maps API For Flash] Clearing Multiple Polylines problem

[Jon Bowles]

Hello Everyone,

I have a Route Map that I am working on.  This is much like ones you would 
find on major airline websites, but this is for flight simulation Virtual 
Airlines (VA).  The point is for many different VA's to incorporate a 
simple, dynamic route map for their airline.  I am parsing 2 XML files: One 
for the Airport Markers, and the other for the Destination polylines to all 
Airports that the VA flies to from there, when the marker is hovered over 
(ROLL_OVER); then, consequently is cleared when the mouse is off the marker 
(ROLL_OUT).  When I add new routes, via a 3rd party website, the XML files 
are instantly updated, and so is the Route Map.

Here is the link for my Map: 
http://chicagoflightsfsx.com/IHeart707/vaRouteMap.html

Everything works great: it dynamically displays the airports, draws geodesic 
polylines to the destination airports, has the info window, etc, etc...

My problem is that if an airport has more than one destination, only the 
last polyline drawn clears.  For airports that have a single destination, it 
works like a charm.  But for the life of me, I can not figure out why I 
can't get ALL the polylines to clear.

If someone could look at my code, and tell me/hint where I am going wrong, I 
would SO appreciate it!  I have been trying for days now.

Google Maps API for Flash Actionscript 3 Code:

import com.google.maps.LatLng;
import com.google.maps.LatLngBounds;
import com.google.maps.controls.ZoomControl;
import com.google.maps.controls.PositionControl;
import com.google.maps.controls.MapTypeControl;
import com.google.maps.InfoWindowOptions;
import com.google.maps.Map;
import com.google.maps.MapEvent;
import com.google.maps.MapMouseEvent;
import com.google.maps.MapType;
import com.google.maps.overlays.*;
import com.google.maps.StyledMapType;
import com.google.maps.StyledMapTypeOptions;
import com.google.maps.styles.*;


// FlashVars embedded in the HTML Object and Parameter tags
var paramObj:Object = this.root.loaderInfo.parameters
var myKey:String = paramObj.myKey;
var myVaid:String = "17898";//paramObj.myVaid;

// Initiate the google map
var map:Map = new Map();
map.key = ""+myKey;
map.sensor = "false";
map.setSize(new Point(stage.stageWidth, stage.stageHeight)); 
map.addEventListener(MapEvent.MAP_READY, onMapReady);
this.addChild(map);

function onMapReady(event:Event):void {
map.setCenter(new LatLng(35.675147, -94.570312), 4, 
MapType.PHYSICAL_MAP_TYPE);
map.addControl(new ZoomControl());
getXml();
}

function getXml():void {
var airportsXml:URLRequest = new 
URLRequest("http://www.vafinancials.com/plugins/app/x_airports.php?id="+myVaid);
var xmlLoader:URLLoader = new URLLoader(airportsXml);
xmlLoader.addEventListener("complete", readXml);
}

function readXml(event:Event):void {
XML.ignoreWhitespace = true;
var airportsXml:XML = new XML(event.target.data);
for (var i:Number = 0; i < airportsXml.airport.length(); i++){
        var newLat:Number = airportsXml.airport[i].lat;
var newLon:Number = airportsXml.airport[i].lon;
var latlng:LatLng = new LatLng(airportsXml.airport[i].lat, 
airportsXml.airport[i].lon);
        var tip = airportsXml.airport[i].aname;   
        var myTitle:String = airportsXml.airport[i].aname;   
        var myContent:String = airportsXml.airport[i].icao;

map.addOverlay(createMarker(latlng, i, tip, myTitle, myContent, newLat, 
newLon));
}

// Add Markers On The Map   
function createMarker(latlng:LatLng, number:Number, tip, myTitle, myContent, 
newLat, newLon):Marker {   
var i:Marker = new Marker(latlng,
    new MarkerOptions({
strokeStyle: {
color: 0xBD7E1B
},
fillStyle: {
color: 0xBD7E1B,
alpha: 0.8
},
label: "",
labelFormat: {
font: "Trebuchet MS",
size: 10,
color: 0xFFFFFF,
bold: true
},
radius: 2.5,
        hasShadow: true,   
        tooltip: ""+myContent+" - "+tip
        })
);

i.addEventListener(MapMouseEvent.CLICK, function(event:MapMouseEvent):void { 
  
    map.openInfoWindow(event.latLng, new InfoWindowOptions({   
    titleHTML: ""+myTitle,
        contentHTML: ""+myContent
        }));
    });
i.addEventListener(MapMouseEvent.ROLL_OVER, function(e:MapMouseEvent):void {
var icao:String = new String(myContent);
var routesXml:URLRequest = new 
URLRequest("http://www.vafinancials.com/plugins/app/x_airports_dest.php?id="+myVaid+"&icao="+icao);
var xmlLoader:URLLoader = new URLLoader(routesXml);
xmlLoader.addEventListener("complete", readXml);
 
function readXml(event:Event):void {
XML.ignoreWhitespace = true;
var routesXml:XML = new XML(event.target.data);
for (var i2:Number = 0; i2 < routesXml.airport.length(); i2++){
var lat:Number = routesXml.airport[i2].lat;
var lon:Number = routesXml.airport[i2].lon;
var p:Polyline = new Polyline([
new LatLng(newLat, newLon), new LatLng(lat, lon)
], new PolylineOptions({
strokeStyle: new StrokeStyle({
color: 0x1B5ABD,
thickness: 1.75,
alpha: 0.5}),
geodesic: true
}))
map.addOverlay(p);
}
i.addEventListener(MapMouseEvent.ROLL_OUT, function(e:MapMouseEvent):void {
map.removeOverlay(p);
 });
}
});
return i;   
}
}

Thank you in advanced for any help/pointers!

Jon

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