Generation of Fire Animation Based on Level-Set

Abstract: Fire animation is very attractive to artists and now widely used in many fields, such as film-making, cartoons, computer games, fire prevention, visual reality. In the research field of computer graphics, however, it has been a difficult issue to realistically simulate various flame effects with rich details. This paper presents an evolution model which is based on Level-Set metamorphosis and use the combination of target shape, path constraint, and combustion propagation to evolve the blue core of fire, so as to simulate the path-based flame spreading, mobile-burning objects, and so on. In addition, aiming to address the lack of details in current fire simulation, we use the modified MacCormack which is a high-order advect solver to lower numerical dissipation and enhance the solution precision of our fire model. Moreover, to further improve the realism of our fire animation, a curve of smoke density evolution is adopted to sculpt the soot production in the burning process. Experimental results show that the proposed method is able to conduct realistic simulation of path-based flame propagation, mobile-burning objects, and other various fire animations with rich details.