Volume preserving haptic pottery
This paper proposes a realistic deformation model for pottery in which the user can interact with a rotating clay volume using a haptic tool. The deformation algorithm preserves the volume of clay to model the incompressible nature of semi-solid clay used in pottery. The interactive clay volume consists of an array of cylindrical elements stacked up vertically, providing simple and efficient collision detection and response. As a part of collision response, the force feedback consisting of both normal spring deformation force and friction force is rendered. Volume preservation is achieved by distributing the removed clay due to interactions, to the entire clay volume using a Rayleigh density function. To depict the real life pottery experience, the mechanical stability of the rotating clay volume is also included.