Focus on 3d terrain programming (english)

How many times have you visited your favorite programming forum or mailing list and been amazed at the sheer number of posts on terrain rendering algorithms that seem to fly at you from every angle? Terrain rendering seems to be a favorite subject among today’s hobbyist programmers; it serves as an excellent portal to more demanding problems and their solutions. However, terrain rendering is by no means a simple problem, and a particular solution can get rather complex.