Introduction The Pseudo-3D tunnel is a well known effect, which was commonly seen in old demos. It uses a very simple mapping trick to create the illusion of movement in 3d space. The algorithm is very easy to understand and implement, and only requires basic trigonometry knowledge. Theory An easy way to visualize how the algorithm works, is to imagine a texture projected on the surface of an axis aligned finite cylinder. This can be achieved by mapping the texture's u coordinate around the c...
