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VIM AEC developed an open format for representing 3D geometry called G3D which reduces import time to just under 6 seconds in Unity. The format can represent triangular and quadrilateral meshes, point clouds, line segments, and polygonal meshes along with arbitrary attributes (e.g. normals, UVs, colors, smoothing groups, etc.) associated with different sub-elements of the mesh. The specification and reference implementation is also considerably simpler than other binary formats such as glTF while supporting a wider range of data attributes.