车载导航系统绘图引擎的设计与实现

Design & realization of rendering engine in car navigation system

嵌入式环境有限的计算能力和存储空间是嵌入式开发必须面对的问题,如何在有限的条件下高效地展现丰富的图形效果,需要根据嵌入式的特点进行有针对性的设计。在分析车载导航系统和绘图引擎特点的基础上,对车载导航系统绘图引擎的设计和实现进行了深入讨论并提出建议,实际项目表明,该方法具有较高的效率和良好的跨平台移植性。

Because of the limitation of computation ability and storage space, it is a hard work to render excellent graphics efficiently under the embedded circumstance; the program should be designed by taking characteristic of embedded circumstance into account. Based on the analysis of embedded development and the characteristic of the rendering engine, and combined with the experience of actual project development, it discusses deeply on the architecture of rendering engine and some important factors which should be recognized when developing the rendering engine, and then gives some advice for easy transplantation and extension.