I have written a vector-based 3D editor (UI customized somewhat like technical drawings). I now want save the vectors/drawing data in portable formats. Which formats are available; which (one?) of them are the most widely accepted, and where can I get hold of the format specifications?
Commercially, many users will look for AutoCAD DWG and Bentley DGN formats. While not free, libraries for producing these formats can be found from the open design alliance
The GIS community use shape files quite a bit for vectorised 3d models, a free SDK for shape files can be found here. The OSG library is also free and supports a number of vector graphics formats.
来源：https://stackoverflow.com/questions/187921/formats-for-saving-vector-based-3d-graphics