Bug in BSpline

[nyalon]

The BSpline tool has a visualisation-bug with the curvature comb.

Screenshot_20181201_113140.png (25.51 KiB) Viewed 2144 times

OS: Debian GNU/Linux testing (buster)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15291 (Git)
Build type: Release
Branch: master
Hash: 9e870bec2e0faba1f688bc4409837b70f40181e7
Python version: 2.7.15+
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.9.1.oce-0.18
Locale: German/Germany (de_DE)

[chrisb]

The BSpline tool has a visualisation-bug with the curvature comb.

Please upload the file.

[nyalon]

Please upload the file.

[chrisb]

The uploaded file is different from the image shown above and the curvature comb is flawless:

OS: Ubuntu 16.04.5 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15287 (Git)
Build type: Release
Branch: master
Hash: 792bb8282a475905a233905a07060640456f3128
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)

[nyalon]

The uploaded file is different from the image shown above and the curvature comb is flawless:

Yes, it is different but here it shows the same problem:

Bezier.png (50.59 KiB) Viewed 2113 times

[chrisb]

I have the latest Ubuntu PPA version, nevertheless is yours newer. But I dont assume a regression. First thing to try is resetting or deleting your config files.

[nyalon]

I have the latest Ubuntu PPA version, nevertheless is yours newer. But I dont assume a regression. First thing to try is resetting or deleting your config files.

I recompiled with occt instead of oce: same problem.
I removed system.cfg and user.cfg: similar problem.
I removed .FreeCAD: same problem.

OS: Debian GNU/Linux testing (buster)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15291 (Git)
Build type: Release
Branch: master
Hash: 9e870bec2e0faba1f688bc4409837b70f40181e7
Python version: 2.7.15+
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)

[jmaustpc]

seems to work perfectly here.

OS: Ubuntu 16.04.5 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15287 (Git)
Build type: Release
Branch: master
Hash: 792bb8282a475905a233905a07060640456f3128
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/Australia (en_AU)

[chrisb]

Can this be a hardware problem? I don't know how far the graphic card driver is involved.

And another idea: can you try with the Appimage? Then we can compare the results of identical programs.

[nyalon]

I rebuild freecad with python 3.7 instead of python 2.7 and Qt5 instead of Qt4 und the problem vanished.
Perhaps a Qt4-related problem?

OS: Debian GNU/Linux buster/sid
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15291 (Git)
Build type: Unknown
Branch: master
Hash: 9e870bec2e0faba1f688bc4409837b70f40181e7
Python version: 3.7.1
Qt version: 5.11.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)