毕业设计-用VISUAL BASIC 开发交互式CAD系统—论文.doc

用Visual Basic 开发交互式CAD系统 PAGE PAGE 2 用Visual Basic 开发交互式CAD系统 内 容 提 要 在交互式CAD系统中，不仅可以实现用鼠标绘图， 还可以选择图元，并对选中的图元进行缩放、缩小、等操作。在众多的交互式CAD开发工具中，Visual Basic是使用最简单、应用最广泛、使用者最多的一种开发工具，Visual Basic语言具备一定的绘图功能。本设计的主要内容是在学习Visual Basic 语言和交互式CAD技术的基础上，运用Visual Basic语言来开发交互式CAD系统。本系统具有交互绘图功能。能实现鼠标绘图，能对图形进行各种形式的缩放操作。本文中的缩放主要包括图形的放大、缩小和局部放大与全屏显示。 关键词: Visual Basic 交互式CAD 缩放 A b s t r a c t In interactive CAD system, not only may realize with the mouse cartography, but also may choose the chart Yuan, and to the chart Yuan which selects carries on the reproduce by pantograph, reduces, and so on the operation. In the multitudinous interactive CAD development kit, Visual Basic is the use simple, the application is most widespread, the user most one kind of development kit, Visual Basic language has the certain cartography function. This design main content is in studies Visual the Basic language and in the interactive CAD technology foundation, language develops the interactive CAD system using Visual Basic. This system has the alternately cartography function. Can realize the mouse cartography, can carry on each kind of form to the graph the reproduce by pantograph operation. In this article reproduce by pantograph mainly includes the graph the enlargement, reduces with the fractionated gain and the entire screen demonstration. Key words: Visual Basic interactive CAD zooming 目 录 一、绪言 ……………………………………………………………………………4 二、开发基础…………………………………………………………………………5 (一) 交互式CAD简介 ………………………………………………………… 5 (二) Visual Basic的简介 ………………………………………………….. 5 三、系统分析…………………………………………………………………………6 (一) 可行性研究 ……………………………………………………………….6 (二) 需求分析 ………………………………………………………………… 6 四、系统总体设计……………………………………………………………………8 五、详细设计…………………………………………………………………………8 （一）界面制作 …………………………………………………………………….8 （二）绘图 …………..………………………………………………………… 9 （三）缩放 ……..……………………………………………………………… 11 六、用户手册………………………………………………………………………16 七、结束语 ……………………………………………………………………….