用于ArcGIS编程中三维符号化问题，用于符号化电线杆-For three-dimensional symbolic ArcGIS programming

利用arcgis engine的scene进行三维地形的显示，并进行剖面线绘制、三维叠加，符号标注-Use arcgis engine of three-dimensional terrain display scene, and cross-sectional line drawing, three-dimensional stack, symbol label

用ARCGIS engine进行CAD矢量数据转换为SHP数据，并且通过等高线数据建立三维TIN(可以检查等高线的错误)-CAD vector data conversion performed by ARCGIS engine for the SHP data, and create three-dimensional contour data by TIN (you can check the contours of error)