请问，AE开发中，如何对ArcScene控件进行三维标注

看看这个例子，需要进行一些类型转换，才能在AE里运行

http://edndoc.esri.com/arcobjects/9.0/Samples/3D_Analyst/Visualization/ArcScene/Text_Toolbar/LABEL_3D_TOOLBAR.htm

Description:

This tool contains a toolbar providing functionality to create text labels in the 3D environment of ArcScene. The text and location of the labels of the toolbar can be originated from features in a layer, as well as by user defined positions via mouse clicks. Dialogs are provided to allow the modification of the rotation, offset, and orientation of the labels. The labels can also be saved and opened into ArcScene documents via the toolbar.

The 3D label toolbar utilizes a library created from another Developer Sample project which contains the core functionality of the 3D labeling. That code highlights the procedures for using the OpenGL type library to create 3D text using fonts on the system. The Label3DEngine project should be reviewed to gain a more specfic understanding of the OpenGL methods used.