VOLUME-PRESERVING SPACE DEFORMATION

Space deformations or free-form deformations techniques are a powerful tool to manipulate and to animate objects. Various extensions of thes e techniques allow a user to intuitively deform objects, but none of t hese propose a solution to preserve the volume of objects throughout t he deformation. This paper introduces a new method to deform an object , its volume being preserved. Our method is based on the space deforma tion model called DOGME. We use a distinctive feature of DOGME to solv e the problem of volume preservation. Polyhedral objects which are cur rently used in geometric modeling are considered and we obtain excelle nt results in a fully intuitive and interactive environment. (C) 1997 Elsevier Science Ltd. All rights reserved.