本文在对数字城市的研究体系和三维城市模型进行分析的基础上，着重对数字城市建筑物的构造实体几何(CSG)建模方法进行了研究。
On the basis of analysis of digital city research framework and existing 3d urban model, this paper researches mainly the techniques of building model based on CSG in digital city.
本文在对数字城市的研究体系和三维城市模型进行分析的基础上，着重对数字城市建筑物的构造实体几何(CSG)建模方法进行了研究。
On the basis of analysis of digital city research framework and existing 3d urban model, this paper researches mainly the techniques of building model based on CSG in digital city.
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