1. The main modules are: Interface Module, the math library, sky box, billboarding, particle systems, text display system.
主要设计实现了：接口模块、数学库、天空盒、公告板、粒子系统、文字显示系统。
2. This rendering method is also referred to as billboarding.
这种绘制方法也被称为告示板技术。
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3. A basic frame of particle system with billboarding technique is constructed first.
建立了采用公告板技术的常规粒子系统的基本框架。
4. Using texture mapping and billboarding technology to optimize and improve the work of draw snow particles, implemented snowflake drawing based on billboarding technology.
采用纹理映射技术和公告板技术优化、完善雪粒子的绘制工作，实现了基于公告板的雪花绘制，并提出了重置死亡粒子的方法。
5. Billboarding technology is a simple and practical component, used to simulate the forest, fire, columns.
公告板技术是一个简单实用的组件，用来模拟森林、火苗、立柱。