Edges, generated with Triangulate modifier looks differend and do not disappear with hiding. #77996

New Issue

Vyacheslav Kobozev · 2020-06-18T14:23:45+02:00

2020-06-18 14:23:45 +02:00

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GT 640/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-17 20:49, hash: e079bf6996
2.83 release

Worked: (newest version of Blender that worked as expected)

Short description of error
2020-06-18_15-14-00.mp4
untitled.blend

Exact steps for others to reproduce the error
Default cube with Triangulate modifier, wireframe mode, edit mode.
Select all, hide. You will have this.

There is no way to part of mesh with generated edges and hide another part.
Also weird shading for polygons.

**System Information** Operating system: Windows-7-6.1.7601-SP1 64 Bits Graphics card: GeForce GT 640/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87 **Blender Version** Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-17 20:49, hash: `e079bf6996` 2.83 release Worked: (newest version of Blender that worked as expected) **Short description of error** [2020-06-18_15-14-00.mp4](https://archive.blender.org/developer/F8630176/2020-06-18_15-14-00.mp4) [untitled.blend](https://archive.blender.org/developer/F8630185/untitled.blend) **Exact steps for others to reproduce the error** Default cube with Triangulate modifier, wireframe mode, edit mode. Select all, hide. You will have this. ![42185019.png](https://archive.blender.org/developer/F8630186/42185019.png) There is no way to part of mesh with generated edges and hide another part. Also weird shading for polygons. ![42204622.png](https://archive.blender.org/developer/F8630192/42204622.png)

Vyacheslav Kobozev commented

2020-06-18 14:23:45 +02:00

Added subscriber: @Vyach

Jacques Lucke commented

2020-06-18 14:42:01 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2020-06-18 14:42:01 +02:00

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

Jacques Lucke commented

2020-06-18 14:42:01 +02:00

I can confirm that. Might not be a bug, but it does look wrong indeed.

Vyacheslav Kobozev commented

2020-06-18 15:37:23 +02:00

Blen 2.79 show all edges in this case. And it is strange too, but looks not so weird.
Perhaps, there is design problem.

Expected: similar appearance for all edges, hidden generated edges for hidden polygons, Same polygon shading as without modifier.
In other words: exact same behavior, as after applying modifier.

Blen 2.79 show all edges in this case. And it is strange too, but looks not so weird. Perhaps, there is design problem. Expected: similar appearance for all edges, hidden generated edges for hidden polygons, Same polygon shading as without modifier. In other words: exact same behavior, as after applying modifier.

Clément Foucault commented

2020-07-02 17:58:25 +02:00

Added subscriber: @fclem

Clément Foucault commented

2020-07-02 17:58:25 +02:00

The different shading is caused by the edit cage rendering on top of the wireframe. This is a known issue (see #64915).

The reason the edges are not hidden is because they don't have any original edge to be linked to. It's the same issue with other constructive modifiers like remesh. Checking for both vertices for each edge would be slower so we also consider this a known issue.

The different shading is caused by the edit cage rendering on top of the wireframe. This is a known issue (see #64915). The reason the edges are not hidden is because they don't have any original edge to be linked to. It's the same issue with other constructive modifiers like remesh. Checking for both vertices for each edge would be slower so we also consider this a known issue.

Vyacheslav Kobozev commented

2020-07-02 20:45:23 +02:00

@fclem
Mask modifier can deal with new edges. Object and edit modes both.
Does it have own secret recipe? : )

untitled.blend

@fclem Mask modifier can deal with new edges. Object and edit modes both. Does it have own secret recipe? : ) [untitled.blend](https://archive.blender.org/developer/F8660269/untitled.blend) ![44325844.png](https://archive.blender.org/developer/F8660271/44325844.png)

Evan Wilson commented

2020-11-24 21:01:56 +01:00

Added subscriber: @EAW

Evan Wilson commented

2020-11-24 21:01:56 +01:00

Adding the modeling module to move it out of the ‘Needs Module Tag’ queue.

Philipp Oeser removed the

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Edges, generated with Triangulate modifier looks differend and do not disappear with hiding. #77996