[Problem] Issues with nested parts in treeview

[epiray]

Is there an existing issue for this?

• I have searched the existing issues

Forums discussion

https://forum.freecadweb.org/viewtopic.php?f=8&t=72556

Version

0.20 (Release)

Full version info

OS: Linux Mint 20.3 (X-Cinnamon/cinnamon)
Word size of FreeCAD: 64-bit
Version: 0.21.30623 (Git)
Build type: Release
Branch: master
Hash: 27f08f38b1658e419e20a153e13236eff1293b77
Python 3.8.10, Qt 5.12.8, Coin 4.0.0, Vtk 7.1.1, OCC 7.6.3
Locale: English/United Kingdom (en_GB)
Installed mods: 
  * ThreadProfile 1.84.0
  * A2plus 0.4.59d
  * freecad.gears 1.0.0
  * Curves 0.5.10
  * ExtremeProDark 1.0.4
  * Plot 2022.4.17
  * fasteners 0.4.15
  * sheetmetal 0.2.58

• has already been checked to be present in previous versions 0.18 and 0.19, see forum thread. I also see it in the daily build versions.

Subproject(s) affected?

No response

Issue description

From the forum thread:

In complex designs, I use nested parts for assembly. Once I nest more than 29 parts, they no longer display correctly. Either they are not transformed any more, or the wire frame stays put, while the volume shading of the assembly still transforms. See the following example:

I have boiled the problem down to the following example, in which each nesting level contains a bar, and each level transforms upwards and 10° around the z axis:

level_029 still displays correctly, the following levels display on top of level_029. The geometry logic still seems fine, when I blindly click at a location where I expect the correctly transformed part to be, it selects o.k.

nesting_test.zip

Anything else?

would be nice if I could attach FCStd files here.

I just compress them in to a zip file and paste file in to github --luzpaz

Code of Conduct

• I agree to follow this project's Code of Conduct

[luzpaz]

Added screenshots + file attachment + About info
to the OP

[maxwxyz]

I've ran into this issue myself many times, often with assemblies.
When trying to move over commercial companies to use FreeCAD, their complex PLM setups and file/assembly structures cannot be displayed with FreeCAD as the tree currently looks like. The indentation of the sub parts or features makes it very hard to navigate and find the right info.
In 0.22dev the tree can be overlayed with transparency over the model but the text is still cut off.
@obelisk79 maybe something for the DWG?

[maxwxyz]

To add to this from the FreeCAD Day 2024 Complaint Session:
The tree isn’t actually just a tree its a collection of things used to construct it

[obelisk79]

Indeed the treeview has some issues with information management. But in reading the original bug description here, it seems what's being described is that the 3d view has display issues after so many levels of nesting within the tree structure.

In relation to the reported issue, it may be a problem which stems from using Coin3D as a rendering engine as it was reported in the linked forum thread to not be present in linkstage which has implemented a different renderer.

[epiray]

This remains a significant problem for us. To maybe give this a nudge, let me announce that epiray is offering a donation of EUR 500 once this bug is fixed.

…

On 10.03.24 11:02, obelisk79 wrote: Indeed the treeview has some issues with information management. But in reading the original bug description here, it seems what's being described is that the 3d view has display issues after so many levels of nesting within the tree structure. In relation to the reported issue, it may be a problem which stems from using Coin3D as a rendering engine as it was reported in the linked forum thread to not be present in linkstage which has implemented a different renderer. — Reply to this email directly, view it on GitHub <#7606 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A3SVYY3YXQQGLM7DJQQPULDYXQ4T7AVCNFSM6AAAAAARE4PLNGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTSOBXGE3DQNBZGQ>. You are receiving this because you authored the thread.Message ID: ***@***.***>

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