From Object-Oriented view, the hierarchical model of Object-Oriented interactive graphic system is discussed by building the aggregation object dynamically.

本文从面向对象的观点出发，通过动态地建立聚合对象，讨论了面向对象的交互式图形系统的层次模型。

youdao

From Object-Oriented view, the hierarchical model of Object-Oriented interactive graphic system is discussed by building the aggregation object dynamically.

本文从面向对象的观点出发，通过动态地建立聚合对象，讨论了面向对象的交互式图形系统的层次模型。

youdao