I basically copied the "bake" operator with a few modifications. I left the comments from the bake operator code mostly untouched.

In D5788#148937, @Jacques Lucke (JacquesLucke) wrote:

I assume graph_edit.c should not be part of this patch?

Made the patch apply with latest master...

Updated with vertex group support and made the internal springs its own spring type with separate stiffness settings.

Updated diff to latest master.

Updated with the latest comments.

Updated based on format

Fixed the remaining comments.

Updated patch fixing some of the feedback comments.

Not really, I might take a look at it when I have time, but that might take a while.

Oh, I guess you want to add Fix T70805: to the title?

I don't have anything to add here. Looks good to me.

Fixed the issues that we found.

Updated with so you can now choose from two types of decimation modes.

We do not have any developers to allocate to this in the foreseeable future.

Updated with the latest feedback.

🎉 This is now merged!

Yes, I've tested this quite a bit. Fingers crossed that I didn't miss anything :P

Updated with latest feedback

Updated the patch based on the feedback given.

We can't reproduce this on our side still.

Ok, thanks for the info! :)

He is on Mac.

Updated with the latest feedback

Because as you noticed, you will lose the progress bar and other things. I talked to Bastien about this and it seems like the proper way to do it is to have exec block and invoke not blocking.
This is how it is done from certain other operators too.

It seems like this is a bug, or at least a miss implementation of the quadriflow operator API.

@Philipp Oeser (lichtwerk) perhaps we could just add a flag to make the operator blocking again if the uses wants to batch convert stuff?

Updated the patch so the redo panel pops up after each operation.

If it explodes, it simply means that the simulation is unstable and you need to increase the max solver steps. In this case it is stable again if I crease the max step from 300 to 600.

@Phil Gosch (saphires) can you implement support for multi edit?

This is not fixed yet.

Seems fine to me. The code seems to be very straightforward and easy to understand.

I can take a look at this later, I don't have time right now.