The spreading of flames and smoke in the virtual fire scene is based on the simulation results of fire simulation software FDS, so that it is similar to that in the real life.

• 根据火灾场模拟软件FDS的计算结果，控制虚拟火灾场景中火焰和烟雾的蔓延，使得虚拟场景中火灾的发展接近实际火灾的情况。