I think this is a little more efficient than dxdy, and easier to read. We call DxDy2 a lot, can any of those use Angle/DirAngle?
/*
* Copyright (C) 2008 Remko Troncon
*/
#ifndef AUTOUPDATER_H
#define AUTOUPDATER_H
class AutoUpdater
{
public:
virtual ~AutoUpdater();
virtual void checkForUpdates() = 0;
};
#endif