Drivers with the object.dimension variable are not updated #73254

New Issue

Vasil · 2020-01-20T10:38:08+01:00

Vasil commented

2020-01-20 10:38:08 +01:00

Blender Version
Broken: version: 2.83
Worked: 2.79b

Short description of error
The bounding box(dimensions) updating with delay in drivers.

Exact steps for others to reproduce the error

Open: Bouding_box_update_delay.blend
Select the box.
Change the x dimension of the box (Note that the cylinder is updated).
Select the cylinder.
Go to the drivers.
Remove the dummy variable.

Change the x dimension of the box (Note that the cylinder is not updated).

Also, I create a topic on blenderarist.com with ideas for better driver workflow. Please check them.
Drivers update -topic

**Blender Version** Broken: version: 2.83 Worked: 2.79b **Short description of error** The bounding box(dimensions) updating with delay in drivers. **Exact steps for others to reproduce the error** - Open: [Bouding_box_update_delay.blend](https://archive.blender.org/developer/F8385069/Bouding_box_update_delay.blend) - Select the box. - Change the x dimension of the box (Note that the cylinder is updated). - Select the cylinder. - Go to the drivers. - Remove the `dummy` variable. # Change the x dimension of the box (Note that the cylinder is **not** updated). Also, I create a topic on blenderarist.com with ideas for better driver workflow. Please check them. [Drivers update -topic ](https://blenderartists.org/t/bounding-box-driver/1202163)

Vasil commented

2020-01-20 10:38:08 +01:00

Added subscriber: @FeralMan

Germano Cavalcante commented

2020-01-22 13:23:22 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-01-22 13:23:22 +01:00

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

Germano Cavalcante commented

2020-01-22 13:23:22 +01:00

I can confirm.

The file has a dependency cycle with the x dimension of the cylinder. (it is not related to the bug but would be nice to avoid it):

Dependency cycle detected:
  OBCylinder/Parameters Component/DRIVER(modifiers["Array"].constant_offset_displace) depends on
  OBCylinder/Geometry Component/GEOMETRY_EVAL() via 'RNA Target -> Driver'
  OBCylinder/Geometry Component/GEOMETRY_EVAL_INIT() via 'Object Geometry UberEval'
  OBCylinder/Parameters Component/DRIVER(modifiers["Array"].constant_offset_displace) via 'Driver -> Driven Property'
Detected 1 dependency cycles

The problem is not seen in blender 2.79
It is interesting to note that if you add a location variable even without adding to the expression the problem seems to be solved.

I can confirm. The file has a `dependency cycle` with the x dimension of the cylinder. (it is not related to the bug but would be nice to avoid it): ``` Dependency cycle detected: OBCylinder/Parameters Component/DRIVER(modifiers["Array"].constant_offset_displace) depends on OBCylinder/Geometry Component/GEOMETRY_EVAL() via 'RNA Target -> Driver' OBCylinder/Geometry Component/GEOMETRY_EVAL_INIT() via 'Object Geometry UberEval' OBCylinder/Parameters Component/DRIVER(modifiers["Array"].constant_offset_displace) via 'Driver -> Driven Property' Detected 1 dependency cycles ``` The problem is not seen in blender 2.79 It is interesting to note that if you add a location variable even without adding to the expression the problem seems to be solved.

Germano Cavalcante changed title from ~~Bounding box delay~~ to Drivers with the object.dimension variable are not updated

2020-01-22 13:26:56 +01:00

ML commented

2020-01-23 22:36:30 +01:00

Added subscriber: @MarcelLegindi

Germano Cavalcante commented

2020-03-03 16:21:00 +01:00

Updated the description and removed the dependency cycle in the file.

Sybren A. Stüvel self-assigned this 2020-03-05 11:48:23 +01:00

blender-admin commented

2020-03-05 17:37:30 +01:00

This issue was referenced by 7d9a5b7b10

This issue was referenced by 7d9a5b7b10b439f62bcc522fee307a942b859ccc

Sybren A. Stüvel commented

2020-03-06 11:10:30 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Sybren A. Stüvel closed this issue

2020-03-06 11:10:30 +01:00

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Drivers with the object.dimension variable are not updated #73254

Change the x dimension of the box (Note that the cylinder is not updated).