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Shapeways Now Supports OBJ File Format


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Question about this, before I attempt my first OBJ upload: is it necessary to provide normals ? I believe they're optional in OBJ, and I've never run across any software dealing with OBJ which couldn't figure out sensible shading for the mesh if normals aren't explicitly provided. However, production of solid objects is a completely different business to surface rendering and I'm guessing normals might be important for figuring out inside/outside (unless it can be determined implicitly from the "watertightness" of the mesh). Thanks for any clarification.
#1 Tim Day (Homepage) on 2012-07-29 20:26 (Reply)

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