毕业设计论文-基于OpenGL的VxWorks图形界面开发要点分析.docVIP

摘要 图形用户界面（GUI）人机交互技术的重要内容，图形图像信息、直观的表达方式与用户交互，使软件系统的人机界面简洁、美观、方便好用，更加人性化。目前GUI已经大量应用在嵌入式领域，但是大多数嵌入式GUI系统提供给用户的显示平面从逻辑设计上讲是二维的最大的缺点在于反映信息量小，在对真实场景进行模拟显示的时候，无法提供真实的场景数据。随着嵌入式系统硬件功能的不断提高，如何开发一款支持3D建模的嵌入式GUI已成为一个迫切的话题。本课题来源于实习工作中的“某星载仪表控制计算机”项目，该计算机采用VxWorks作为其操作系统，要求界面实时显示系统的相关参数数据、图形信息等，并3D图形绘制显示。本文经过详细分析和设计，实现了将OpenGL/Mesa3D图形库移植到VxWorks系统，并结合VxWorks多媒体库WindML的相关接口，开发了以消息驱动为核心、具有功能、支持中文界面和3D显示的GUI系统。从工程应用和测试的效果来看，该GUI系统基本实现了预期功能。 penGL/Mesa WindML Abstract As an important branch of the HMI(Human-Machine Interface), GUI(Graphical User Interface)provides rich graphics modes for exchanging information with users in graphical and intuitionistic ways. GUI makes software convenient and humanistic, and has been applied in embedded fields prevalently. Most of traditional embedded GUI systems only provide 2D drawing control. It means that the show planes which are available to users are two-dimensional in logic. In the simulation of showing the real scene, the major drawback of this system is that information which is reflected is so little that can not provide true data. With the improvement of embedded systemshardwares, it has become an urgent topic how to develop an embedded GUI which supports 3D modeling. This issus originates from the project named Space Instrument Control Computer and this computer uses VxWorks as its operating system, which request the UI is humanistic and could demonstrate the systems related parameter data, graphic and other information in real-time, and it also has the 3D graphical function, which can be used to display and render the 3d graphics. With deeply analysis and design, this thesis finally make the OpenGL/Mesa3D library portable for the VxWorks system, and by using the WindML library containted inVxWorks System, I developed a Message-Driven oriented GUI System, whose style is windows liked and Chinese character supported. Moreover it can be used as a 3D display and rendering system. Regarding the test effect of the application, this