Is it impossible to produce a 3-dimensional representation of a glTF model?

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No, it is not impossible to produce a 3-dimensional representation of a glTF model. glTF is a format designed for efficient transmission and loading of 3D scenes and models, and can be used to represent both static and animated models. There are many software applications and libraries that support glTF and can be used to view and manipulate 3D models, including popular game engines such as Unity and Unreal Engine. Additionally, many web browsers now support glTF natively, which allows for 3D models to be displayed directly in web pages without the need for plugins or additional software.