Face Is Planar Node: Rotating a plane makes it non-planar #98718

New Issue

Floatharr · 2022-06-09T11:36:07+02:00

Floatharr commented

2022-06-09 11:36:07 +02:00

System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.59

Blender Version
Broken: version: 3.2.0, branch: master, commit date: 2022-06-08 10:22, hash: e05e1e3691
Worked: (newest version of Blender that worked as expected)

Short description of error
Face is planar node has unreliable erratic behavior including marking a plane non-planar if it's rotated. There were several other weird behaviors like parts of a mesh considered non-planar by distances several times larger than the mesh itself. Note the applied scale, edge length, and threshold. This feature feels like nobody even tried it before committing.

Also maybe not the place to talk about design but this should really be scale-independent.

Exact steps for others to reproduce the error
Make a plane, add geo nodes, apply material if face is planar, move and rotate plane
blender_93A9X09iQn.mp4

**System Information** Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.59 **Blender Version** Broken: version: 3.2.0, branch: master, commit date: 2022-06-08 10:22, hash: `e05e1e3691` Worked: (newest version of Blender that worked as expected) **Short description of error** Face is planar node has unreliable erratic behavior including marking a plane non-planar if it's rotated. There were several other weird behaviors like parts of a mesh considered non-planar by distances several times larger than the mesh itself. Note the applied scale, edge length, and threshold. This feature feels like nobody even tried it before committing. Also maybe not the place to talk about design but this should really be scale-independent. ![blender_7oxesqd9YW.jpg](https://archive.blender.org/developer/F13141395/blender_7oxesqd9YW.jpg) **Exact steps for others to reproduce the error** Make a plane, add geo nodes, apply material if face is planar, move and rotate plane [blender_93A9X09iQn.mp4](https://archive.blender.org/developer/F13141390/blender_93A9X09iQn.mp4)

Floatharr commented

2022-06-09 11:36:07 +02:00

Added subscriber: @Floatharr

Floatharr commented

2022-06-09 11:37:53 +02:00

Also in this video in this tweet, I have a single face, duplicated, moved and scaled multiple times, and only the middle one is marked planar. This makes no sense in any scenario involving a threshold. https://twitter.com/floatharr/status/1534823120032374784

blender_ECAn5MNRzm.mp4

Also in this video in this tweet, I have a single face, duplicated, moved and scaled multiple times, and only the middle one is marked planar. This makes no sense in any scenario involving a threshold. https://twitter.com/floatharr/status/1534823120032374784 [blender_ECAn5MNRzm.mp4](https://archive.blender.org/developer/F13141402/blender_ECAn5MNRzm.mp4)

Omar Emara commented

2022-06-09 11:46:03 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Floatharr commented

2022-06-09 11:46:28 +02:00

You can actually just make a cube and move it in edit mode, or move the origin, and any face facing positive direction will be marked non-planar.

blender_3uvkmisiD3.mp4

You can actually just make a cube and move it in edit mode, or move the origin, and any face facing positive direction will be marked non-planar. [blender_3uvkmisiD3.mp4](https://archive.blender.org/developer/F13141420/blender_3uvkmisiD3.mp4)

Iliya Katushenock commented

2022-06-09 11:56:38 +02:00

Added subscribers: @guitargeek, @mod_moder

Iliya Katushenock commented

2022-06-09 11:56:38 +02:00

@guitargeek Hey, is that correct?
(Raising the threshold does not affect the effect)
2022-06-09 12-52-45.mp4

@guitargeek Hey, is that correct? (Raising the threshold does not affect the effect) [2022-06-09 12-52-45.mp4](https://archive.blender.org/developer/F13141425/2022-06-09_12-52-45.mp4)

blender-admin commented

2022-06-14 19:53:50 +02:00

This issue was referenced by 09501c1215

This issue was referenced by 09501c1215403d5983d182c2d016b33f27078264

blender-admin commented

2022-06-14 19:53:50 +02:00

This issue was referenced by 6737f89e49

This issue was referenced by 6737f89e4916b5add06e412b8192e0007d5de03b

Johnny Matthews commented

2022-06-14 19:55:30 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Johnny Matthews closed this issue

2022-06-14 19:55:30 +02:00

Johnny Matthews self-assigned this 2022-06-14 19:55:30 +02:00

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Face Is Planar Node: Rotating a plane makes it non-planar #98718