【摘要】 为了实现嵌入式图形系统的跨平台和多引擎,提出了一种层次结构设计思想。在设备驱动层中使用了设备对象概念,屏蔽了驱动的具体实现,从而实现了跨平台。在引擎层中建立了一个引擎抽象层,将每种引擎提供的服务抽象成统一的引擎接口供上层调用,从而实现了一种具有2D、半透明和3D绘图效果的嵌入式图形系统。更多还原

【Abstract】 To achieve a cross-platform and multiple-engine embedded graphic system,a layer-structure design idea is proposed.In the device driven level,it shielded the implement details of drive with the concept of device object and achieved the cross platform of the graphic system.An abstract engine layer it built in the engine level to abstract the services supported by idiographic engines for higher level calling.So an embedded graphic system is implemented which has 2D,translucent and 3D drawing effects.更多还原