Adam Szofran, our resident expert on developing the terrain system inside FSX, has put together a very comprehensive (and technical) article about how we manage to allow the generation of a world-wide virtual reality in real-time.

Not for the faint of heart, some of the concepts here assume a relatively deep understanding of coordinate systems, graphics technology and the use of spatial systems! We hope a good portion of you can really sink your teeth into this one. Take a look.