Bug report: failed boolean difference

[felix.mariotto]

I’ve got a boolean difference failure for seemingly no reason.

Here is the file :
buggy bool diff.3dm (249.7 KB)

With this inside :

Steps to reproduce :

1. call _BooleanDifference
2. subtract from the blue part
3. subtract with the red part

System info :

Rhino 7 SR30 2023-6-12 (Rhino 7, 7.30.23163.13001, Git hash:master @ f695e494df78377a81b2b95edb99c6067e324b33)
License type: Commercial, build 2023-06-12
License details: Cloud Zoo

Windows 11 (10.0.22621 SR0.0) or greater (Physical RAM: 31Gb)

Computer platform: LAPTOP - Plugged in [100% battery remaining]

Hybrid graphics configuration.
Primary display: AMD Radeon™ Graphics (AMD) Memory: 1GB, Driver date: 9-28-2022 (M-D-Y).
> Integrated accelerated graphics device with 3 adapter port(s)
- Secondary monitor is laptop’s integrated screen or built-in port
- Windows Main Display attached to adapter port 1
Primary OpenGL: NVIDIA GeForce RTX 3070 Laptop GPU (NVidia) Memory: 8GB, Driver date: 3-8-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 531.29
> Integrated accelerated graphics device with 4 adapter port(s)
- Video pass-through to primary display device

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 3-8-2023
Driver Version: 31.0.15.3129
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\SimLab\Plugins\SimLab PDF From Rhino\SimLabPDFExporter.rhp “SimLab PDF Exporter”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\SolidTools.rhp “SolidTools”
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.30.23163.13001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoLabsTools.rhp “Rhino Labs Tools”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.30.23163.13001
C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.30.23163.13001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.30.23163.13001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.30.23163.13001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”

[Helvetosaur]

Something odd with your red surface:

If you explode it, rebuild edges and rejoin, it seems to work.

It seems (seams?) that there should be a seam edge showing up where indicated, but it isn’t…
Not sure if that is the problem.

Ah, never mind, that was just my display mode…

[felix.mariotto]

Hi @Helvetosaur !
Thanks for the info, it works indeed after rebuilding the edges.
Not sure why edge and vertex tolerance ended up at 3.792 though, it seems very high ?
Unfortunately I don’t know how these objects were created, so I suppose it’s impossible to find the source of the issue now.

[martinsiegrist]

I exploded and joined the surfaces and the Boolean Differences worked fine.