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var map;
function init() {
var mercator = new OpenLayers.Projection("EPSG:900913");
var geographic = new OpenLayers.Projection("EPSG:4326");
map = new OpenLayers.Map({
div: "map",
projection: mercator,
layers: [
new OpenLayers.Layer.OSM(),
new OpenLayers.Layer.PointTrack("Aircraft Tracks", {
projection: geographic,
strategies: [new OpenLayers.Strategy.Fixed()],
protocol: new OpenLayers.Protocol.HTTP({
url: "kml-track.kml",
format: new OpenLayers.Format.KML({
extractTracks: true,
extractStyles: true
})
}),
dataFrom: OpenLayers.Layer.PointTrack.TARGET_NODE,
styleFrom: OpenLayers.Layer.PointTrack.TARGET_NODE,
eventListeners: {
"beforefeaturesadded": function(e) {
// group the tracks by fid and create one track for
// every fid
var fid, points = [], feature;
for (var i=0, len=e.features.length; i<len; i++) {
feature = e.features[i];
if ((fid && feature.fid !== fid) || i === len-1) {
this.addNodes(points, {silent: true});
points = [];
} else {
points.push(feature);
}
fid = feature.fid;
}
return false;
}
}
})
],
center: new OpenLayers.LonLat(-93.2735, 44.8349).transform(geographic, mercator),
zoom: 8
});
map.addControl(new OpenLayers.Control.LayerSwitcher());
};
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