Freeware Descriptions:

3DSurG is used to create 3D surfaces based on either 3D implicit functions ( f(x,y,z)=0 ) or parametric functions ( x=f(u,v), y=f(u,v), z=f(u,v) ). The generated 3D surface can be easily scaled and exported to AutoCAD (*.DXF) and text file, or saved as various graphics data format such as Bitmap, JPG, and PNG. 3DSurG also provides rotation, pan, and zoom in/out to view generated model. Requires: Microsoft .NET Framework 2.0.

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