How to handle each object, like rotate and translate, in a 3D scene which is read from a 3ds file by OpenGL?

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OpenGL

I guess I can read the tip 0x4160 in 3ds file, which means the local axis data. But there are questions. The first three float which should mean the model's local axis, in my program they are three ugly number seems likely I will never know how do they mean. So how can I handle them, please help me. Thank you!