Improved physics-based simulation

摘要

The invention relates to computer simulation and animation of visual sequences of a physics based system, such as visual sequences of fluids, for use in motion pictures, video games and the like. Simulation branching is effected by making a record of the system state of a first simulation as it exists at a point in time. If the director wishes to change the manner in which the simulated event progresses, a second simulation can be executed using the recorded system state as input conditions for a second simulation. This allows rapid re-execution of a portion of a simulation without requiring lengthy re simulation of the initial portion of the simulated event which is already thought to be satisfactory. Such branching can also be used to control high resolution of a focus region being a smaller portion of a wider simulated event. 263989_1 Focus region branch 302- 300 - Fi2ure 3 410a 410b 410c 410d 410e / / 1 -*1 400 - Fine simulation Figure 4