Workflow enhancements for embedded labels

[w531t4]

New Functionality

• Add support for output in .3mf.
• Add ability for specifying extruders in .3mf.
  • This works, but requires upstream modifications to PrusaSlicer (see my PR Use existing extruder assign. when converting to multipart object, if possible prusa3d/PrusaSlicer#14525) <-- no longer a blocker, adjusted approach
• Add ability to flip text to face bed (embedded).

These enhancements make the workflow for printing labels (embedded text) much easier! If you're interested in using this in the interim, follow PrusaSlicer's instructions for building from source (https://github.com/prusa3d/PrusaSlicer/blob/master/doc/How%20to%20build%20-%20Linux%20et%20al.md) and use my branch from the PR.

Before the workflow looked like the following:

• Create many stl with gflabel
• Drag drop many labels into Prusaslicer
• For each label, break into parts <-- many clicks
• For each label, reorient to have text facing build plate <-- more clicks
• For each object + parts, select appropriate extruder for label base, select appropriate extruder for text <-- Lots and lots of clicks
• Print

Into the following:

• Create many 3mf with gflabel, specifying text extruder, label-base extruder, and flip label text to face buildplate options
  • poetry run gflabel pred 123 --output blah45.3mf --style embedded --3mf-body-extruder=1 --3mf-text-extruder=2 --place-labeltext-on-plate
• Open empty prusa slicer project
• file -> import, select as many 3mf's as you want
• check box for "apply to all objects being loaded" and press "YES"
  
• print

(screenshot taken from perspective of underneath the buildplate)

[w531t4]

• 999202a:
  • Yields 3dmodel.model containing one object, and leverages Slic3r_PE_model.config to separate parts and color them.
  • Works with Prusaslicer today, no changes needed.
  • Bambou Studio doesn't import Slic3r_PE_model.config, and therefore isn't aware of any of the separate parts.
• cd45b49:
  • Yields 3dmodel.model containing one body object and multiple text objects. Slic3r_PE_model.config is generated to color each object.
  • Requires a patch to Prusaslicer to function as expected. (see Use existing extruder assign. when converting to multipart object, if possible prusa3d/PrusaSlicer#14525)
  • Bambou Studio doesn't import Slic3r_PE_model.config, but since 3dmodel.model has objects broken out, split->to parts functions as one would expect

[ndevenish]

This looks fantastic, it's something I had started looking into but I just couldn't work out the 3mf format, or how to get it to communicate any special settings/associations. Do you know if Orcaslicer has enough of PrusaSlicer DNA that it still works there?

Otherwise, I'll try to look over this and merge in soon.

For each object + parts, select appropriate extruder for label base, select appropriate extruder for text <-- Lots and lots of clicks

FWIW my normal flow is, select text colour, split to parts, ctrl-click all the bases and change only those. It's a lot faster (but still slower than this, obviously).

[w531t4]

This looks fantastic, it's something I had started looking into but I just couldn't work out the 3mf format, or how to get it to communicate any special settings/associations. Do you know if Orcaslicer has enough of PrusaSlicer DNA that it still works there?

I tested Orcaslicer today, it fails like Bambou Studio does. Both share a similar approach, but that approach is significantly different from prusaslicer. I'll see what i can do to get orca to work, but it's going to be a lift.