Download DLL containing C# class library to work with 3D files (3DS, 3MF, DAE, DFX, gITF, U3D), meshes, geometries, scenes, animations via .NET on-premise API....5 (ASCII/Binary) 3D Systems CAD: STL (ASCII/Binary) Wavefront:... new Cylinder()); // save drawing in FBX format scene.Save(dir...