C# .NET API to Convert 3D formats, FBX, 3DS, AMF, RVM, DAE, DRC, GLTF, OBJ, PLY, & U3D. Set Custom font folders for CAD Conversion. Convert proteCted arChives....C# .NET API to convert 3D formats, FBX, 3DS, AMF, RVM, DAE, DRC, GLTF, OBJ, PLY, & U3D. Set custom font folders for CAD conversion. Convert protected archives.