Roof inverted from Sketcher base drawing

[regis]

There is a strange effect on the current roof tool

According to this tutorial the sketcher base drawing should normaly generate a roof that is vertical upright in a normal direction

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the 3rd picture shows the normal way that the roof should be generated by the sketch base, as show in the tutorial, but in this instance this roof is normally generated by the Draftwire base

the 2nd picture shows the same roof done with the sketcher, and it generated and inverted roof,
This is not in it self a bad option to generated a roof like shape upside down, but an addition optional option to control the Normal could be added if possible?

the 1st picture is from freecad 0.15, it seems even the older version has the same problem.

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OS: Linux Mint 18.1 Serena
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.11266 (Git)
Build type: None
Branch: master
Hash: ab1b344410600b7d694abf6bb4ff2b71769978c5
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.1.0



OS: Linux Mint 18.1 Serena
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.15.4671 (Git)
Branch: releases/FreeCAD-0-15
Hash: 244b3aef360841646cbfe80a1b225c8b39c8380c
Python version: 2.7.11
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17

[kkremitzki]

https://www.youtube.com/watch?v=Rl3INyzi5IM
https://www.youtube.com/watch?v=BzO4YphRGX8

These can be embedded into the post like so:

phpBB [video]

phpBB [video]

[yorik]

Probably the normal direction is wrongly estimated by the roof tool. Maybe the best way would be to do the same as other Arch tools, allow the user to fix the normal direction. I'll look into it.

[danreb]

Hi
I had the same problem.

It was using a rectangular scketch, but when using polylines (in counter clock wise disposition - didn't try another way?) the roof behavior is OK.

This was tested using regis explained technic for using sketches to constraint arch roof, wall, slab ,...

Cheers