Maniphest T82215

Incorrect Face orientation in Screw modifier.
Closed, Duplicate
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Assigned To
None
Authored By
Rajendra Meena (rajq123)
Oct 29 2020, 10:50 AM
Tags
  • BF Blender
Subscribers
Rajendra Meena (rajq123)
Richard Antalik (ISS)

Description

System Information
Operating system: Windows-10-10.0.16299-SP0 64 Bits
Graphics card: GeForce MX150/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30

Blender Version
Broken: version: 2.90.0, branch: master, commit date: 2020-08-31 11:26, hash: rB0330d1af29c0
Worked: (newest version of Blender that worked as expected)

Short description of error
The bevel operation (Vertex) flip the face orientation/Normal.

Exact steps for others to reproduce the error

  1. Add a single vertex.
  2. Apply screw modifier (For bottle making)
  3. Goto edit mode and make some extrusion of vertex in upward direction.
  4. Now select any middle vertex and press "Ctrl+Shift+B" to bevel it. (Problem starts here)
  5. Enable face orientation from overlays and you will see the beveled vertices will show incorrect face orientation.

I know i can apply the screw modifier and correct it but it will ruin the Non-destructive approach.

My suggestions:
Just like blender implemented weld modifier even there is an option for merge vertices, a similar type of modifier can be implemented for correcting normals. 3ds max already have "smooth" modifiers to tackle such situation.

untitled.blend738 KBDownload

Related Objects

Event Timeline

Rajendra Meena (rajq123) created this task.Oct 29 2020, 10:50 AM
Rajendra Meena (rajq123) updated the task description.Oct 29 2020, 10:55 AM
Richard Antalik (ISS) added a subscriber: Richard Antalik (ISS).Oct 29 2020, 2:00 PM

This looks to be same issue as T66320. Enable Calc order option in the Screw modifier.

Richard Antalik (ISS) closed this task as a duplicate of T66320: Vertex bevel incorrectly flips normals when used on just an isolated spline of vertices.Oct 29 2020, 2:00 PM