[Solved] TechDraw edges above section/cut line

[pbergaus]

Hello,

I have a building with wall openings. When creating the section cut I should see the "hidden line" bof the door lintel but there are no lines.
When creating a wall opening with a door element, two lines can be seen but these are the lines from the wall that are not beeing removed by the cut.
When creating a wall opening with a cube the opening is cut properly with no lines on the floor in this area.

Can this be achieved automatically without adding these lines manually?
I am from Graz,Austria, so when searching for "hidden lines" a misunderstanding is happening very often. From my understanding these "hidden lines" are different from my "hidden lines". In all the tutorials/images these lines of the door lintel are not drawn at all.

How it should be from technical point of view: https://www.bauberufe.eu/images/doks/Pl ... A_6240.pdf

Test_example.FCStd

(121.15 KiB) Downloaded 19 times

test.PDF

(222.9 KiB) Downloaded 36 times

Freecad info:
OS: KDE Flatpak runtime (KDE/plasma)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.14555 (Git shallow)
Build type: Release
Branch: (HEAD detached at 0.19.4)
Hash: 476ecf091941bead59b14e44afa6064d5a66afa3
Python version: 3.9.9
Qt version: 5.15.3
Coin version: 4.0.0
OCC version: 7.5.1
Locale: German/Austria (de_AT)

Thanks

[chrisb]

Moved from Help forum.

[wandererfan]

I have a building with wall openings. When creating the section cut I should see the "hidden line" bof the door lintel but there are no lines.

The cutting plane is below the header of the doorway and the view is looking down. Nothing above the cutting plane will appear.

Maybe Arch Section Plane does what you want.

[pbergaus]

Okay thanks for the answer, but I am still not fully satisfied with it to be honest.

The description in the Wiki is quite misleading and I think that it should be the other way round:
Currently:
All On: If hidden objects must be shown or not. If False, only objects that are visible in the 3D view are rendered
Show Hidden: If the hidden geometry (the part of the geometry that lies behind the section plane) is shown or not. It will be rendered in dashed line, which can be configured in the Arch preferences.

If I change "All On" to true, I get what I want, but "Show hidden" changes nothing in the view in my case because I have no triangulated areas which have edges that are hidden so it should be:

Show Hidden: If hidden objects must be shown or not. If False, only objects that are visible in the 3D view are rendered
All On: If the hidden geometry (the part of the geometry that lies behind the section plane) is shown or not. It will be rendered in dashed line, which can be configured in the Arch preferences.

For me that topic is solved. It can be achieved with the "Arch SectionPlane".

Thank you for your help.

Philipp

[Roy_043]

If I change "All On" to true, I get what I want, but "Show hidden" changes nothing in the view in my case

AFAICT there is an update issue that is causing confusion. "Show Hidden" is the property that should be changed for this purpose. But the ArchView is not always updated properly. Reopening the file and recomputing the ArchView can be required.

Example:

1. Open the attached file.
2. Note that "Show Hidden" is "true" for the ArchView.
3. Recompute the ArchView.
4. OK: The hidden lines now display.
5. Delete the ArchView.
6. Select the Section and call TechDraw ArchView to create a new ArchView.
7. Note that "Show Hidden" is "false" for the new ArchView, and yet hidden lines are shown.
8. Recompute the ArchView.
9. Result: This has no effect.
10. Save and reopen the file.
11. Recompute the ArchView.
12. OK: The hidden lines are no longer displayed.
13. Again delete the ArchView and create a new one.
14. Note that the new view does not show hidden lines now. Compare step 7.

[pbergaus]

Thank you for that clarification. I was able to reproduce that and that is solved for me now.