Developing a visually convincing model of fire

smoke

clouds and other irregular fuzzy objects is the most difficult and attractive problems in computer graphics. This paper relates several methods for modeling and simulating irregular objects such as fire

smoke

and clouds. Solid texture-based model

fractal-based clouds model

diffusion processes-based fire model

cellular automata-based flame model

and particle system-based fire model and clouds model presented by researchers in recent years are introduced here. Lastly

we analyze the performance such as representation of the object

a model for its spatiotemporal behavior and application environments of these existing models

especially for the models based on particle system which can represent motion

changes of form

and dynamics that are not possible with classical surfaced-based representations and can easily generate richly detailed images. For particle system

the quickly computable models have to be developed to describe these objects in the future.