Skin modifier dont work with 0 face objects #41677

New Issue

Karja Krähwald · 2014-09-01T16:16:39+02:00

Karja Krähwald commented

2014-09-01 16:16:39 +02:00

System Information
Windows 7 64, HD 5770

Blender Version
Broken: 9337574 (2.71 release) + 35bc266

Short description of error
Objects with Skin modifier dont show up in Game Engine if its geometry have 0 (zero) faces.

Exact steps for others to reproduce the error
SkinBugGE.blend

Add a Plane.
Give it a Skin modifier.
- Press P to start the GE - works, you can see the skinned mesh.
Plane Editmode: Delete one vertice to get kind of a tube.
- Press P to start the GE - Object disappears completely.

**System Information** Windows 7 64, HD 5770 **Blender Version** Broken: 9337574 (2.71 release) + 35bc266 **Short description of error** Objects with Skin modifier dont show up in Game Engine if its geometry have 0 (zero) faces. **Exact steps for others to reproduce the error** [SkinBugGE.blend](https://archive.blender.org/developer/F107888/SkinBugGE.blend) - Add a Plane. - Give it a Skin modifier. - Press P to start the GE - works, you can see the skinned mesh. - Plane Editmode: Delete one vertice to get kind of a tube. - Press P to start the GE - Object disappears completely.

Karja Krähwald commented

2014-09-01 16:16:39 +02:00

Changed status to: 'Open'

Karja Krähwald commented

2014-09-01 16:16:39 +02:00

Added subscriber: @karja

Karja Krähwald commented

2014-09-03 11:56:44 +02:00

This comment was removed by @karja

*This comment was removed by @karja*

Adam Friesen commented

2014-09-05 01:33:43 +02:00

Added subscriber: @Ace_Dragon

Adam Friesen commented

2014-09-05 01:33:43 +02:00

I'm pretty sure the BGE was never able to render objects without faces unless you assigned a wireframe shader to it.

The mesh doesn't have a surface to begin with, and most surface shaders are designed to work with faces, so no surface means nothing solid to render. You'd get the same using BI and Cycles.

I'm pretty sure the BGE was never able to render objects without faces unless you assigned a wireframe shader to it. The mesh doesn't have a surface to begin with, and most surface shaders are designed to work with faces, so no surface means nothing solid to render. You'd get the same using BI and Cycles.

Karja Krähwald commented

2014-09-05 18:48:39 +02:00

Not sure what you mean, Skin works just fine in BI and Cycles.

The problem is indeed that GE searches a face to display the skinned mesh.
A workaround for example is to add one face, and then hide it with mask modifier, before other operations follow.

Campbell says Skin generally works best with loose edges - you can test this by yourself very easily with a monkey mesh + Skin modifier.
So I still hope this is an issue that can be solved by code.

Not sure what you mean, Skin works just fine in BI and Cycles. The problem is indeed that GE searches a face to display the skinned mesh. A workaround for example is to add one face, and then hide it with mask modifier, before other operations follow. Campbell says Skin generally works best with loose edges - you can test this by yourself very easily with a monkey mesh + Skin modifier. So I still hope this is an issue that can be solved by code.

Sergey Sharybin commented

2014-09-12 11:15:56 +02:00

Added subscribers: @brita, @Moguri, @Sergey

Sergey Sharybin commented

2014-09-12 11:15:56 +02:00

@Moguri, @brita, can you look into this report please?

Porteries Tristan commented

2015-10-28 23:23:07 +01:00

Added subscriber: @panzergame

Porteries Tristan commented

2015-10-28 23:23:07 +01:00

I really don't understand this bug report : Why apply a skin modifier on an empty object ?

Karja Krähwald commented

2015-10-29 15:26:40 +01:00

With 0 face object I mean a mesh without faces, not an empty.
You can use it for low poly meshes or stylized geometry (bone meshes, water waves)
or for (roots of) a tree, for example. Simply what you want.

With 0 face object I mean a mesh without faces, not an empty. You can use it for low poly meshes or stylized geometry (bone meshes, water waves) or for (roots of) a tree, for example. Simply what you want.

Porteries Tristan commented

2015-10-29 18:44:44 +01:00

This comment was removed by @panzergame

*This comment was removed by @panzergame*

Aaron Carlisle commented

2019-06-29 02:19:58 +02:00

Added subscriber: @Blendify