Weird Skin modifier shutdown #39266

New Issue

Karja Krähwald · 2014-03-19T16:29:17+01:00

Karja Krähwald commented

2014-03-19 16:29:17 +01:00

System Information
Windows 7 64, HD 5770

Blender Version
Broken: 2.69 release & Hash a91247c

Short description of error
I think its an out-of-memory issue.
Happened by accident and is hard to describe briefly, better go straight to file and steps.

In any case, following must be true for the shutdown:

Mesh modifiers: Mirror (merge) > Curve > Skin
Skin Root point is on the mirror axis and mirror should not overwrite the whole mesh.
Have to use Nurbs Curve/Nurbs Circle/Path to get zero dimensions for curve.
Curve minimum vertice number = 3

I guess its because of Skins automatic geometrygeneration in some way.
Maybe related to #38003 and the problem with zero (0).

Exact steps for others to reproduce the error
Skin_bug.blend
Curve deforms the mesh. Snap curves vertices together at any point.

Steps:

Create a edge (Mesh) with one vertice in its object center.
Mirror modifier the edge in opposite direction. You should have 2 connected edges now.
Add a curve modifier.
Add a skin modifier - make sure to assign the root point on the center vertice.
Add a NurbsPath curve and use it in the meshs modifier.
Curve Editmode: select all vertices.

Problem: Snap Selection to Cursor closes my Blender.

**System Information** Windows 7 64, HD 5770 **Blender Version** Broken: 2.69 release & Hash a91247c **Short description of error** I think its an out-of-memory issue. Happened by accident and is hard to describe briefly, better go straight to file and steps. --- In any case, following must be true for the shutdown: - Mesh modifiers: Mirror (merge) > Curve > Skin - Skin Root point is on the mirror axis and mirror should not overwrite the whole mesh. - Have to use Nurbs Curve/Nurbs Circle/Path to get zero dimensions for curve. - Curve minimum vertice number = 3 I guess its because of Skins automatic geometrygeneration in some way. Maybe related to #38003 and the problem with zero (0). **Exact steps for others to reproduce the error** [Skin_bug.blend](https://archive.blender.org/developer/F81841/Skin_bug.blend) Curve deforms the mesh. Snap curves vertices together at any point. Steps: - Create a edge (Mesh) with one vertice in its object center. - Mirror modifier the edge in opposite direction. You should have 2 connected edges now. - Add a curve modifier. - Add a skin modifier - make sure to assign the root point on the center vertice. - Add a NurbsPath curve and use it in the meshs modifier. - Curve Editmode: select all vertices. Problem: Snap Selection to Cursor closes my Blender.

Karja Krähwald commented

2014-03-19 16:29:17 +01:00

Changed status to: 'Open'

Karja Krähwald commented

2014-03-19 16:29:17 +01:00

Added subscriber: @karja

Sergey Sharybin commented

2014-03-21 10:28:15 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-03-21 10:28:15 +01:00

This sounds like a bug we've fixed already. Did you try using 2.70 official release?

Karja Krähwald commented

2014-03-21 15:19:30 +01:00

Have tried in 19e627c (2.7 release) and 3406ef8 from today.

Still occurs.
I think this is a different bug.

Have tried in 19e627c (2.7 release) and 3406ef8 from today. Still occurs. I think this is a different bug.

Sergey Sharybin commented

2014-03-21 17:08:08 +01:00

Well, ok. Can't reproduce tho. Will leave to others :)

Sergey Sharybin self-assigned this 2014-04-10 18:47:01 +02:00

Sergey Sharybin commented

2014-04-10 18:47:01 +02:00

Can see some assert failures tho, would try to dig into the issue.

Karja Krähwald commented

2014-04-11 13:43:50 +02:00

Maybe this helps to reproduce:

If i delete all curve vertices except the first (in the center), and then extrude this remaining one -> crash.
If i delete the 3. vertice (left side) and snap only 2 vertices together its a slow crash (white screen)(Has worked some time ago, now its a crash). So perhaps you have to extrude the curve or the mesh and snap more vertices together.

Maybe this helps to reproduce: - If i delete all curve vertices except the first (in the center), and then extrude this remaining one -> crash. - If i delete the 3. vertice (left side) and snap only 2 vertices together its a slow crash (white screen)(Has worked some time ago, now its a crash). So perhaps you have to extrude the curve or the mesh and snap more vertices together.

blender-admin commented

2014-04-11 13:56:08 +02:00

This issue was referenced by blender/blender-addons-contrib@a3f5e6c76f

This issue was referenced by blender/blender-addons-contrib@a3f5e6c76f08cfb60556c18e1605ed9b8cfa0d5d

blender-admin commented

2014-04-11 13:56:08 +02:00

This issue was referenced by a3f5e6c76f

This issue was referenced by a3f5e6c76f08cfb60556c18e1605ed9b8cfa0d5d

Sergey Sharybin commented

2014-04-11 13:56:32 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue