重力式码头CAD集成系统的面向对象实现

本文所构建的重力式码头CAD集成系统GrawCAD(Gravity Wharf CAD Integrated System)将面向对象的编程方法贯穿于系统各个模块的具体实现过程中，集分析、设计与绘制工程图于一体，具体集成的模块包括：数据输入、构件设计、结构分析与优化设计、工程图纸的绘制和工程文档的编制等。GrawCAD利用标准的C 实现了适用于Windows及Linux等不同操作系统的核心计算类库，采用AutoCAD二次开发技术开发了工程图纸绘制模块，利用内存数据映射在系统不同进程间传递数据，利用消息发送及多线程对数据实时更新。

Object-Oriented realization of gravity wharf CAD system

GraWCAD takes full use of Object-Oriented method to build its kernel computing class library and some accessory classes like dynamic array, uses ARX to build its plotting module, uses memory data mapping to communicate between different processes, uses windows messages and multi-threads to update project data in time. GraWCAD shows one integrating design process: parameters input, structure and components design, structural analysis and optimization, plotting, project documents and so on, it has been txamined and approved by China Ministry of Communications as a practical efficient system.