Coping with large deformation is known to be time consuming, so efficiency and visual quality are the key issues as they can open avenues such as surgery simulation or virtual reality in general. After a review of previous related work, we present a hybrid model for highly deformable materials that combines implicit surfaces and a particle system. It results in a global model that gathers the advantages of the two approaches, and other valuable properties as volume preservation. Then we discuss conventional particle system weaknesses. An alternative model is thus proposed allowing a space-time adaptative simulation , where particles can subdivide to better discretize fast deforming areas, or merge to simplify stable regions.
Computations are therefore stable and optimized as discretization is automatically adapted.
Lastly, an active implicit skin model is introduced. This deformable surface can coat any deformable model both providing a neat visualization and confering physical properties such as surface tension. The new models we developed seem to promise a fully adaptive simulation of deformable objects as computations are minimized to ensure a given accuracy and focussed where needed. Active Implicit Skin Short animation sequences compiled one day perhaps.