Lat / Lon point's to X / Y algorithm's in actionscript, but easily portable

latLonToXY.as

private function getPoint(lat : Number, lon : Number, mapwidth : uint, mapheight : uint) : Point
{
	return new Point(((lon+180) / 360) * mapwidth, ((90-lat) / 180) * mapheight);
}

private function getMercatorPoint(lat : Number, lon : Number, mapwidth : uint, mapheight : uint) : Point
{
	return new Point(((lon+180) / 360) * mapwidth, ((90-GudermannianInv(lat)) / 180) * mapheight);
}

private function GudermannianInv(lat : Number) : Number
{
	var sign : Number = Math.sin(lat) > 0 ? 1 : -1;
	var sin : Number = Math.sin(lat * 0.0174532925 * sign);
	return sign * (Math.log((1 + sin) / (1 - sin)) / 2) * 28.6478898;
}

I recognise this ;)

:) Many TY's for the help Ricardo!