OptionalcolorsPer-face colors keyed by faceId from ShapeMesh.faceGroups. RGBA 0-1 floats.
OptionalmaterialsPer-face named materials keyed by faceId from ShapeMesh.faceGroups.
OptionalnameName of the model object inside the 3MF archive. Default: "model".
OptionalunitUnit of measurement for vertex coordinates. Default: "millimeter".
Options controlling 3MF archive export.