Synthesizing Flames and Their Spreading

We present a new technique for re synthesis which combines a model for ames with a model for ame spreading. For the ame model, we show that minor changes to traditional particle system techniques exhibit signiicant improvements in realism , with little to no extra rendering costs. For ame spreading, we model physically-based evolution of the boundary between burning and non-burning regions of polygonally deened objects. Experiments which combine the ame synthesis and spread models are illustrated on polygonally-deened objects. The resulting new technique provides parameters for explicitly controlling wind or gravity, while simultaneously incorporating properties such as the geometry and ammability of the object being burned. Through the use of these parameters , the resulting re can interact more naturally with the material it is burning, as well as with the surrounding environment.