The objects that can be modeled with CSG are fairly limited compared to other methods. Few 3D systems today use CSG modeling because of these problems. A much more popular method is polygon face modeling, or meshes. Meshes A mesh object is a collection of polygons linked to form an infinitely thin surface skin that defines the shape of the object. Most 3D graphics systems today represent objects as meshes because many techniques exist to process them efficiently and meshes can be used to model a huge variety of objects.
Many operations exist to create and edit mesh models.
Every 3D art system differs but most offer standard operations such as generation of primitives, sweeping, and extruding. Depending on the software used, other mesh editing and creation techniques may be available. 3D Studio from AutoDesk provides specifications to third party developers to create Procedural Modeling programs. As other 3D software systems add such capabilities in the future, it will be easier to construct sophisticated mesh models. The creation of complex mesh models can be simplified by using a 3D digitizer.