Android平台上基于粒子系统的喷射型火焰模拟

Simulation of jet fire based on particle system on Android mobile platform

针对传统粒子系统的燃烧型火焰模型在Android移动平台上模拟火焰喷射装置发射喷射型火焰运动状态时,由于采用了随机运动方式,产生大量粒子,无法满足系统实时性及逼真性的问题。提出一种燃烧学模型与粒子系统相结合的改进方法来模拟喷射型火焰。根据喷射型火焰燃烧学理论,提出按火焰生命周期进行分阶段渲染多种纹理的火焰仿真方法来减少每帧生成的粒子数。同时,构建了半四面体粒子图元来增强喷射火焰的细节,能生成较真实喷射火焰效果。实验证明,改进的模拟方法可以通过较少粒子数达到较好的视觉真实感,满足实时喷射火焰生成需求。

On Android mobile platform, when combustion flame model based on the traditional particles system simulates the kinestate of the jet fire made by flamethrower, due to the fact that the random movements and a large number of parti-cles are produced, it cannot meet instantaneity and verisimilitude of the system. An improved method combining the model of combustion with the particle system is proposed to simulate the jet fire. According to the theory of combustion of jet fire, a simulation method which renders the texture with the life cycle of flame in stages is proposed to reduce the number of par-ticles at each frame. Particles of half tetrahedral primitive is presented to enhance the details of the jet fire as well as to generate more realistic effects of jet fire. The experiment shows that the improved simulation method can acquire better vis-ually realistic by reducing less number of particles, and meet the demand of generating real jet flame.