This forms the basis for stereographic projection. This circle maps to a circle under stereographic projection. The parametrization to be used is the inverse of "hyperbolic stereographic projection". It is instructive to compare to stereographic projection for spheres. Knowing this is key to understanding how to interpret a three-dimensional projection of the tesseract. The significance of this depended on the depth of focus of the projection optics. This route shows as curved on any map except for one using a gnomonic projection. Rotoscoping is achieved by two methods, rear projection and front surface projection. Multiview is a type of orthographic projection. This is not the only way of generating such a conformal projection. This is a limitation of the filtered back projection reconstruction algorithm. None of it correlates with things like astral projection. His map covers the entire world in a double hemisphere projection. It is also used in about 85% of digital cinema projection. Isometric projection is a type of axonometric projection.