Unable to display edit cage for loose edges created by a Mask modifier #72729

New Issue

Karja Krähwald · 2019-12-27T14:26:57+01:00

Karja Krähwald commented

2019-12-27 14:26:57 +01:00

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 980/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 425.31

Blender Version
Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: f1aa4d18d4
Worked: Blender 2.79b

Short description of error
Skin modifier is unable to display edit cage (modifier display mode #4) for loose edges.

This happens if a Mask modifier hides vertices to build these loose edges.
As you can see, faces are still displayed correctly.

Exact steps for others to reproduce the error
SkinEditCageMasked.blend

Create a Mesh (subdivide it 1 time or not).
Give it a Mask modifier and activate "On Cage" Edit mode.
Give it a new Vertex Group and mask geometry to create loose edges.
Give it a Skin modifier with visible origin and activate "Display in Edit mode".
Toggle X-Ray to see the edges.

Issue:
Loose edges created by the Mask modifier wont appear, but are still clickable/movable.

In the file I have added a monkey mesh to show where this behaviour can cause problems while editing.

**System Information** Operating system: Windows-7-6.1.7601-SP1 64 Bits Graphics card: GeForce GTX 980/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 425.31 **Blender Version** Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: `f1aa4d18d4` Worked: Blender 2.79b **Short description of error** Skin modifier is unable to display edit cage (modifier display mode #4) for loose edges. ![SkinEditCageMasked.png](https://archive.blender.org/developer/F8245918/SkinEditCageMasked.png) This happens if a Mask modifier hides vertices to build these loose edges. As you can see, faces are still displayed correctly. **Exact steps for others to reproduce the error** [SkinEditCageMasked.blend](https://archive.blender.org/developer/F8245925/SkinEditCageMasked.blend) 1. Create a Mesh (subdivide it 1 time or not). 2. Give it a Mask modifier and activate "On Cage" Edit mode. 3. Give it a new Vertex Group and mask geometry to create loose edges. 4. Give it a Skin modifier with visible origin and activate "Display in Edit mode". 5. Toggle X-Ray to see the edges. Issue: Loose edges created by the Mask modifier wont appear, but are still clickable/movable. In the file I have added a monkey mesh to show where this behaviour can cause problems while editing.

Karja Krähwald commented

2019-12-27 14:26:57 +01:00

Added subscriber: @karja

Philipp Oeser commented

2019-12-28 14:36:45 +01:00

Added subscribers: @fclem, @Jeroen-Bakker, @lichtwerk

Philipp Oeser commented

2019-12-28 14:36:45 +01:00

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

Philipp Oeser commented

2019-12-28 14:36:45 +01:00

Can also confirm.

This is even unrelated to the skin modifier, it shows using a mask modifier alone:
#72729.blend

This is what it looks like in 2.79:

This is master:

CC @Jeroen-Bakker
CC @fclem

Can also confirm. This is even unrelated to the skin modifier, it shows using a mask modifier alone: [#72729.blend](https://archive.blender.org/developer/F8248169/T72729.blend) This is what it looks like in 2.79: ![image.png](https://archive.blender.org/developer/F8248170/image.png) This is master: ![image.png](https://archive.blender.org/developer/F8248172/image.png) CC @Jeroen-Bakker CC @fclem

Philipp Oeser changed title from ~~Skin modifier unable to display edit cage for loose edges created by a Mask modifier~~ to Unable to display edit cage for loose edges created by a Mask modifier

2019-12-28 14:38:12 +01:00

Jeroen Bakker commented

2020-05-18 10:19:02 +02:00

As I don't see the loose wires in object mode it might be related to a different behavior of the mask node.

Issue is that the mask node doesn't flag the edges to be loose ME_LOOSEEDGE.

As I don't see the loose wires in object mode it might be related to a different behavior of the mask node. Issue is that the mask node doesn't flag the edges to be loose `ME_LOOSEEDGE`.

blender-admin commented

2020-05-18 11:11:13 +02:00

This issue was referenced by cddfa7a449

This issue was referenced by cddfa7a449d22b3a680ea5e08381d6c621397e7a

Jeroen Bakker self-assigned this 2020-05-18 11:15:08 +02:00

Jeroen Bakker commented

2020-05-19 10:14:00 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Jeroen Bakker closed this issue

2020-05-19 10:14:00 +02:00

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Unable to display edit cage for loose edges created by a Mask modifier #72729