Techdraw WB - some weird lines are shown

Discussions about the development of the TechDraw workbench
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71GA
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Joined: Mon Mar 27, 2017 10:03 pm

Techdraw WB - some weird lines are shown

Postby 71GA » Thu Aug 01, 2019 8:32 pm

I have finished my 3D model and now I have to supply the documentation using TechDraw workbench. Workbench shows two lines that shouldn't be there (attachment - marked with a yellow marker). What kind of lines are these two lines and how do I turn them off? I supply also the screenshot of the detail of the 3D model.
Attachments
drawing.pdf
(709.79 KiB) Downloaded 23 times
3D model - detail screenshot.png
3D model - detail screenshot.png (204.47 KiB) Viewed 441 times
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dcapeletti
Posts: 383
Joined: Wed Jul 23, 2014 2:27 pm

Re: Techdraw WB - some weird lines are shown

Postby dcapeletti » Thu Aug 01, 2019 11:12 pm

Hi, something similar happens to what happened to me. A few days ago I published it. https://forum.freecadweb.org/viewtopic.php?f=35&t=38118
wandererfan
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Joined: Tue Nov 06, 2012 5:42 pm

Re: Techdraw WB - some weird lines are shown

Postby wandererfan » Fri Aug 02, 2019 12:43 am

71GA wrote:
Thu Aug 01, 2019 8:32 pm
I have finished my 3D model and now I have to supply the documentation using TechDraw workbench. Workbench shows two lines that shouldn't be there (attachment - marked with a yellow marker). What kind of lines are these two lines and how do I turn them off? I supply also the screenshot of the detail of the 3D model.
What version are you using? If you are using freecad-daily (v0.19) you can use the line decorator to mark the lines invisible.

I can't tell you much else based on a screen grab and a PDF file. If you share the model (or a simpler version that shows the same problem) I might be able to tell you more.

Usually this is due to an invalid shape that confuses the hidden line removal algorithm.
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71GA
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Re: Techdraw WB - some weird lines are shown

Postby 71GA » Fri Aug 02, 2019 4:35 am

wandererfan wrote:
Fri Aug 02, 2019 12:43 am
71GA wrote:
Thu Aug 01, 2019 8:32 pm
I have finished my 3D model and now I have to supply the documentation using TechDraw workbench. Workbench shows two lines that shouldn't be there (attachment - marked with a yellow marker). What kind of lines are these two lines and how do I turn them off? I supply also the screenshot of the detail of the 3D model.
What version are you using? If you are using freecad-daily (v0.19) you can use the line decorator to mark the lines invisible.
Here are the details of the version:

OS: Debian GNU/Linux 10 (buster)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.
Build type: Release
Python version: 2.7.16rc1
Qt version: 5.11.3
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)
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71GA
Posts: 49
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Re: Techdraw WB - some weird lines are shown

Postby 71GA » Fri Aug 02, 2019 4:38 am

dcapeletti wrote:
Thu Aug 01, 2019 11:12 pm
Hi, something similar happens to what happened to me. A few days ago I published it. https://forum.freecadweb.org/viewtopic.php?f=35&t=38118
Did you have transparency turned ON? I think it might be correlated to this...
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dcapeletti
Posts: 383
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Re: Techdraw WB - some weird lines are shown

Postby dcapeletti » Fri Aug 02, 2019 10:55 am

71GA wrote:
Fri Aug 02, 2019 4:38 am
dcapeletti wrote:
Thu Aug 01, 2019 11:12 pm
Hi, something similar happens to what happened to me. A few days ago I published it. https://forum.freecadweb.org/viewtopic.php?f=35&t=38118
Did you have transparency turned ON? I think it might be correlated to this...
Hi, no, it's not about transparency, it's about a projection error.

Greetings
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Kunda1
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Joined: Thu Jan 05, 2017 9:03 pm

Re: Techdraw WB - some weird lines are shown

Postby Kunda1 » Sat Aug 03, 2019 11:06 am

Moved thread to TD subforum
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