Module threemf 

3MF: the mesh package, written with its own archive.

A 3MF file is a ZIP holding three parts: the content-types declaration, a relationship pointing at the model, and the model itself: an XML document of meshes and the items that place them. The mesh half is ordinary; the archive is the part a kernel usually reaches for a library to do, and this does not.

It writes stored entries (no compression), which the ZIP format has always allowed and every reader accepts: what a CAD kernel needs to write a ZIP is the container, not the codec. A file written this way is larger than one deflated, and says so by being what it is.

Reading is the other way round. Every package a slicer or a modelling tool writes is deflated, so read_3mf inflates, with the decoder half of DEFLATE kept in this crate, and reads the archive through its central directory, where the sizes are, since a streamed entry leaves them out of its local header.

Structs

Object

One mesh in the package, with the name the item carries.

ThreeMfImport

What read_3mf found.

ThreeMfObject

One object of a package, placed as its build item places it.

Enums

ObjectType

What a 3MF object is for, as its type attribute says.

Functions

read_3mf

Read a 3MF package into placed meshes.

read_package

Read every part of a package: the entry names and their bytes.

write_3mf

Write meshes as a 3MF package.