矿井通风系统可视化程序设计原理

针对矿井通风系统特点，利用面向对象的程序设计方法，对矿井通风系统进行可视化进行程序设计，把矿井通风系统构成实体分成几类对象，通过对象间发送消息，解决双线条绘制巷道节点处自动处理问题，创新地实现矿井通风系统拓扑关系自动建立和维护。实现矿井通风系统属性数据采用数据库存储，利用面向对象编程的思想，对数据库指针对象进行封装，达到数据库和图形无缝连接。

Program design theory of mine ventilation visualization

According to the characteristic of mine ventilation, tunnel is the core of entire mine ventilation, the composing of mine ventilation system visualization is designed in the base of tunnel. The mine ventilation visualization has position data(vector data) and attribute data that is relevant for the mine ventilation . A new program was developed by using object-oriented method and database is used for storing attribute data, in this method, a base class is designed for all visualization object class , in this class a database pointer is encapsulated, so it can keep graph and database consistent .At this software, it has resolve joint position drawing by using the double line to draw tunnel and build topology relationship automatically.