Incorrectly determines the number of perimeters that can fit

[demonlibra]

Description of the bug

With some perimeter width settings, two perimeters overlap into one line.

Last screenshot.
Looks like one line in the middle.
But the code contains two perimeters passing along the same line.

Enabling the feature "Detect thin walls" solves the problem.

Project file & How to reproduce

The thickness of the model is 2 mm.
Set perimeter width greater than 0.4 mm
Shape-Box.zip

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.3.0, 2.3.3, 2.4.0, 2.4.1, 2.4.2

Operating system

Windows 10, LinuxMint 20

Printer model

UNI

[demonlibra]

The same problem with cilinder.

Shape-Cylinder.zip

[willkaxxx]

#8306 Copy

[NGC869]

Hi, already mentioned here:
#7973
#7949

[stepikovo]

We released PrusaSlicer 2.5.0-alpha2 today with the Arachne perimeter generator, it should fix the issue, can you please confirm?

[demonlibra]

Sorry for long reply. Dont get notify about your comment.
Checked in PrusaSlicer 2.5.0. Problem was resolved with arachne perimeters generator. If select Classic problem still present.
Thank you.