bpy.context.object.collision.thickness_inner has no effect. #41840

New Issue

Richard Colburn · 2014-09-15T16:30:34+02:00

Richard Colburn commented

2014-09-15 16:30:34 +02:00

System Information
Bug is present on multiple computers with different operating systems and graphics cards.

Blender Version
Bug is present in multiple builds including 2.71 and multiple daily builds up to c670ceb

Short description of error
the "inner face thickness" setting for detecting cloth collisions (bpy.context.object.collision.thickness_inner) has no effect.
The collision margin is therefore determined exclusively by the outer face thickness setting. Here is how it's supposed to work: http://wiki.blender.org/index.php/Doc:2.6/Manual/Physics/Collision

Exact steps for others to reproduce the error
Set up any cloth with a collision object. With any point of the cloth on the side of a face in the collision object opposite the direction of the normal, the cloth moves away from the face rather than moving the direction of the normal when within the "inner face thickness" margin. It doesn't matter if the cloth starts inside the "inner face thickness" margin or moves into the margin.
for the attached file, start the cloth simulation and observe the different "inner face thickness" margins on the collision objects.
inner_face_thickness_not_working.blend

**System Information** Bug is present on multiple computers with different operating systems and graphics cards. **Blender Version** Bug is present in multiple builds including 2.71 and multiple daily builds up to c670ceb **Short description of error** the "inner face thickness" setting for detecting cloth collisions (bpy.context.object.collision.thickness_inner) has no effect. The collision margin is therefore determined exclusively by the outer face thickness setting. Here is how it's supposed to work: http://wiki.blender.org/index.php/Doc:2.6/Manual/Physics/Collision **Exact steps for others to reproduce the error** Set up any cloth with a collision object. With any point of the cloth on the side of a face in the collision object opposite the direction of the normal, the cloth moves away from the face rather than moving the direction of the normal when within the "inner face thickness" margin. It doesn't matter if the cloth starts inside the "inner face thickness" margin or moves into the margin. for the attached file, start the cloth simulation and observe the different "inner face thickness" margins on the collision objects. [inner_face_thickness_not_working.blend](https://archive.blender.org/developer/F110556/inner_face_thickness_not_working.blend)

Richard Colburn commented

2014-09-15 16:30:34 +02:00

Changed status to: 'Open'

Richard Colburn commented

2014-09-15 16:30:34 +02:00

Added subscriber: @RichardColburn

Bastien Montagne self-assigned this 2014-09-16 16:47:35 +02:00

Bastien Montagne commented

2014-09-16 16:47:35 +02:00

Not a bug in fact, Cloth only uses 'outer' parameter (on both sides of faces). Fixed the doc and will commit a tip change so that users know about it.

blender-admin commented

2014-09-16 16:50:28 +02:00

This issue was referenced by c793042577

This issue was referenced by c793042577a036f7668afc5bf31f42e4ad97dad1

Bastien Montagne commented

2014-09-16 16:51:20 +02:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2014-09-16 16:51:20 +02:00

Bastien Montagne commented

2014-09-16 16:51:20 +02:00

Closed by commit c793042577.

Closed by commit c793042577.

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bpy.context.object.collision.thickness_inner has no effect. #41840