Roof Planes flipped

[JellyPalm]

Hiya,

Not sure if this is a question or a bug:

Doing roofs in Arch: Sometimes, for no apparent reason the roof plane is flipped (upside down roofs).
Sometimes occurs even when doing simple roofs on a rectangle shape, sometime with wires.
The Flip option doesn't seem to help, as Roof tool will not allow edit of variables once roof is flipped back rightside.
A related factor seems to be that the number of editable planes exceeds the actual number of faces when this occurs, i.e. 12 variables for a 4 sided rectangle.

I tried drawing bases clockwise and anti- a la Inventor - but no better.

I see that this topic was raised in 2017

https://forum.freecadweb.org/viewtopic.php?t=25740

but there wasn''t really any resolution then either by the look of it.

any suggestions?

cheers,

OS: Windows 8.1 (6.3)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.22319 (Git)
Build type: Release
Branch: master
Hash: 33ef4e0e35fba74c6e2fa3829cfd15c4b6f67e94
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United Kingdom (en_GB)

[Roy_043]

I tried drawing bases clockwise and anti- a la Inventor - but no better.

A quick test shows that clockwise wires result in upside down roofs. The importance of the direction of the wire is mentioned in the documentation of the Arch_Roof command:

1. Create a wire with following the counter-clockwise direction and select it.

Please provide examples that show contrary results.

[JellyPalm]

Hmm, correct: this seems to work now.
I have no contrary examples at this time.
perhaps my previous reference planes were upside down
It's relativity straightforward.

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