  This document aims at specifying the requirements and capturing the needs of
users for building a softbody simulation system. This system has different
applications ranging from computer games to surgery training which facilitates
the creation and visualization of a certain softbody object. It also allows
users to interact with created object at real time. A softbody or deformable
object is an object whose shape changes due to an external force. Deformation
type varies depending on the amount of object deformation. Each object can have
multiple layers and each layer can have its own properties. So layers can be
different in pressure, density and motion.
