Eulerian Contact for Versatile Collision Processing

摘要: We propose a new approach for collision modeling in physically based animation. Contrary to most current approaches, our method can be used with all physical models rather than any specific class. At each time step, the geometry of bodies is mapped sparse regular Eulerian grid. Each grid point carries mass, velocity and spatial density. This acts as common mechanical layer where detection, reaction take place, without assumption about internal dynamics contact. Mappings are then propagate penalty- constraint-based reactions back bodies. show that mappings easily set up commonly models. Our greatly simplifies implementation since we only have consider body's individual mapping grid, numerous model pair-specific methods. Moreover, it allows us design reuse efficient response strategies independently demonstrate variety including rigid bodies, deformable solids fluids.