基于组件的瓦斯地质图形图例库的研发

Study and development of the gas geology symbol lib based on com technology

图形图例是信息实现有效传输的基础,对其准确的数字化表达则是实现这一基础的前提条件.本文以矿井瓦斯地质图图例标准为基础,在对点、线、面图例符号的组成元素、几何特征、属性特征等方面进行全面研究后,提取出各类图例符号的概念模型.在此基础上,结合面向对象的思想,并采用组件技术,开发并集成了一套瓦斯地质图例符号矢量库组件.结果证明,该库中的图例符号不但精度高,扩展性强;同时,该库是基于组件思想开发的,所以可方便的整合到不同的系统中.

Standardized symbols are the foundation for the effective communication of information, but the exact representation of them is the premise to the foundation. Refer to the symbol standard of gas geology, the concept models of different symbol types are given through in - depth analysis. Finally, the gas geology symbol lib was developed with the C0M technology. In order to shorten the developing period and make the lib more extensible, the C0M based Dotnet platform was chosen. Meanwhile, the WinAPI functions are used to improve the drawing efficiency. As a result, the symbols lib can represent the features they stand for with high precision and easy to extend as well.