[Fixed][Bug#4285] Bevel/Chamfer invert surface normal

[fc_tofu]

I don't have a faulty version here. Could you reproduce by simply chamfering an edge of a primitive box ?

bevel/chamfer on primitive box cause no error.
...extruded cube (plane+extrusion), no error.

...revolved tube, no error

...extruded tube (2 methods), no error.

fsc_2020-03-05_070022.jpg (98.54 KiB) Viewed 1403 times

fsc_2020-03-05_035347.jpg (121.71 KiB) Viewed 1411 times

[otoien]

I cannot reproduce in 0.19.19697 under Win10, only tried second case:
In Part WB created primitive cube,
applied thickness to top surface,
applied chamfer to one edge.

All screen shots above show draft workbench while description mention Part WB, not sure why, may be I missed something?

Chamfer-after-thickness-001.jpg (128.17 KiB) Viewed 1398 times

OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19697 (Git)
Build type: Release
Branch: master
Hash: 8832356802011bf5d70e9d6f0efa89c47bc70a91
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United States (en_US)

[chrisb]

My tests were all made in Part workbench or - where mentioned - in PartDesign. Nothing from Draft workbench was used.

[fc_tofu]

...
All screen shots above show draft workbench while description mention Part WB, not sure why, may be I missed something?

...

I customize toolbars from PartWB to DraftWB. This doesnot affect test results.

fsc_2020-03-05_151134.jpg (184.45 KiB) Viewed 1381 times

My info:

Code: Select all

OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19697 (Git)
Build type: Release
Branch: master
Hash: 8832356802011bf5d70e9d6f0efa89c47bc70a91
Python version: 3.7.3
Qt version: 5.12.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Chinese/China (zh_CN)

Your, chrisb's, and my info is different at：
Version/Python version/Qt version/Locale.

[fc_tofu]

If no one disagree, I will open a ticket for this bug.

[chrisb]

I will open a ticket for this bug.

Yes please.

[MaurinoWeb]

If no one disagree, I will open a ticket for this bug.

Hello everybody...
Besides the mentioned problem that I also have...
I have the normals reversed in other situations with freecad 0.19:

When I draw a polyline clockwise

When I create shell from circle or polyline... EDIT: with all draftwb closed geometries, extruded in partwb (shell)

If I create solids no problem

Sorry my English
Thanks

OS: Ubuntu 18.04.1 LTS (XFCE/xubuntu)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.20310 (Git) AppImage
Build type: Release
Branch: master
Hash: 2cac4898d7d62276fbbaaef5b4cecb9bfdd29a33
Python version: 3.8.2
Qt version: 5.12.5
Coin version: 4.0.0
OCC version: 7.4.0
Locale: Italian/Italy (it_IT)

inverted-normal-2.jpg (21.68 KiB) Viewed 1293 times

[MaurinoWeb]

Same problem on faces built in partwb with "create shape" and activated planar...

Face from vertices: only if I make a selection clockwise

Face from edges: any selection order reproduces the problem

OS: Ubuntu 18.04.1 LTS (XFCE/xubuntu)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.20310 (Git) AppImage
Build type: Release
Branch: master
Hash: 2cac4898d7d62276fbbaaef5b4cecb9bfdd29a33
Python version: 3.8.2
Qt version: 5.12.5
Coin version: 4.0.0
OCC version: 7.4.0
Locale: Italian/Italy (it_IT)

[Syres]

Ping

I think maybe git commit 8832356 is causing the incorrect rendering

[wmayer]

Ping

I think maybe git commit 8832356 is causing the incorrect rendering

It's not the rendering that causes the problem but the rendering reveals that the shape is broken because orientations of the sub-elements of the shape are inconsistent.