[TBC][BUG] Inconsistent behaviour of unconstrained elements detector in Sketcher

[PrzemoF]

The video shows the problem: https://peertube.social/videos/watch/d5 ... a1b15e33bf
How to recreate:
1. Create new document, new sketch
2. Create line, circle
3. Activate the function
4. Line/circle is not selected

When the circle center is fixed the detection works as expected.

Some other problems are showing up as well with more complicated shapes:

Zrzut ekranu z 2021-04-07 19-04-26.png (159.92 KiB) Viewed 504 times

[chrisb]

1. Create new document, new sketch
2. Create line, circle
3. Activate the function
4. Line/circle is not selected

Works here as expected. Invoking Select unconstraint DoF works with the link in the message, the icon and the menu.

OS: macOS 10.16
Word size of FreeCAD: 64-bit
Version: 0.20.24612 (Git)
Build type: Release
Branch: master
Hash: f525904c1be10a0f55aa3502151c2c55e5054259
Python version: 3.9.2
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.1
Locale: C/Default (C)

[PrzemoF]

Interesting... I can't repeat it after closing FreeCAD...

OS: Fedora 33 (Workstation Edition) (GNOME/gnome-xorg)
Word size of FreeCAD: 64-bit
Version: 0.20.24690 (Git)
Build type: Release
Branch: master
Hash: 3a36602ae8252e278a5322c765eeb1f8c6bd93ff
Python version: 3.9.2
Qt version: 5.15.2
Coin version: 4.0.0a
OCC version: 7.5.0
Locale: Polish/Poland (pl_PL)

[PrzemoF]

1. Create new document, new sketch
2. Create line, circle
3. Activate the function
4. Line/circle is not selected

Works here as expected. Invoking Select unconstraint DoF works with the link in the message, the icon and the menu.

OS: macOS 10.16
Word size of FreeCAD: 64-bit
Version: 0.20.24612 (Git)
Build type: Release
Branch: master
Hash: f525904c1be10a0f55aa3502151c2c55e5054259
Python version: 3.9.2
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.1
Locale: C/Default (C)

Can you draw a rectangle and test the function?

[chrisb]

Can you draw a rectangle and test the function?

Sketch with Line, Rectangle, Circle: they are all selected correctly on clicking the link.

[PrzemoF]

OK, it's getting interesting..

The fedora 33 FreeCAD:

OS: Fedora 33 (Workstation Edition) (GNOME/gnome-xorg)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.Unknown
Build type: Unknown
Python version: 3.9.0
Qt version: 5.15.1
Coin version: 4.0.0a
OCC version: 7.5.0
Locale: Polish/Poland (pl_PL)

Zrzut ekranu z 2021-04-09 21-44-30.png (142.3 KiB) Viewed 395 times

My local build:

OS: Fedora 33 (Workstation Edition) (GNOME/gnome-xorg)
Word size of FreeCAD: 64-bit
Version: 0.20.24690 (Git)
Build type: Release
Branch: master
Hash: 3a36602ae8252e278a5322c765eeb1f8c6bd93ff
Python version: 3.9.2
Qt version: 5.15.2
Coin version: 4.0.0a
OCC version: 7.5.0
Locale: Polish/Poland (pl_PL)

Zrzut ekranu z 2021-04-09 21-45-50.png (154.48 KiB) Viewed 395 times

Can I kindly ask other people to perform simple test:
1. New drawing, new sketch
2. Draw rectangle
3. Click this function:

Zrzut ekranu z 2021-04-09 21-47-42.png (77.38 KiB) Viewed 395 times

4. Post the screen shot of the result

[chrisb]

Here you are:

SnipScreenshot-71f5da.png (3.09 KiB) Viewed 382 times

I can imagine, that this depends on the exact position of the rectangle. To make this comparable you should save the file and test it on different systems.

Do you use the same solver?

[PrzemoF]

Thanks! I didn't touch the settings, so I guess it's the same solver. I'll check that to be sure.

Edit: the problem is solver independent.

[chrisb]

Can you upload the file that leads to the two-lines-proposal?

[PrzemoF]

Just to let you know - the file gives 4 points when I open it in my local build FreeCAD, so it's definitely problem with the official fedora build.