Unexpected explosion on pieces of a fractured cube (Added Rigid Body) #82126

New Issue

Brill Jasper Rayel · 2020-10-27T08:17:36+01:00

2020-10-27 08:17:36 +01:00

System Information
Operating system: MAC OS (Catalina)
Graphics card: default (Mac mini Late 2012)

Blender Version
Broken: (example: 2.80, edbf15d3c0, master, 2018-11-28, as found on the splash screen)
Worked: (newest version of Blender that worked as expected)

Short description of error
Theres a force on the pieces of fractured cube rather than for them to just fall like pulling by gravity.

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

On Blender preference add "cell fracture"

Cube place on top of the y axis
Added plane below the cube (add rigid body, set type to passive)
Hide plane
select cube and select annotate (placement: surface)
draw on cube
F3 and select cell fracture (Point Source: Annotation, Recursion: 153, Collection: "fractures")
Select any piece and apply Physics (Rigid Body)
Try to play
Right Click collection named "fractures" and click select objects.
On the Interface select Object > Rigid Body > Copy_From_Active
Try to play.

**System Information** Operating system: MAC OS (Catalina) Graphics card: default (Mac mini Late 2012) **Blender Version** Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen) Worked: (newest version of Blender that worked as expected) **Short description of error** Theres a force on the pieces of fractured cube rather than for them to just fall like pulling by gravity. **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). * On Blender preference add "cell fracture" 1. Cube place on top of the y axis 2. Added plane below the cube (add rigid body, set type to passive) 3. Hide plane 4. select cube and select annotate (placement: surface) 5. draw on cube 6. F3 and select cell fracture (Point Source: Annotation, Recursion: 153, Collection: "fractures") 7. Select any piece and apply Physics (Rigid Body) 8. Try to play 9. Right Click collection named "fractures" and click select objects. 10. On the Interface select Object > Rigid Body > Copy_From_Active 11. Try to play.

Brill Jasper Rayel commented

2020-10-27 08:17:36 +01:00

Added subscriber: @BlenderMacUser

Philipp Oeser commented

2020-10-27 15:02:16 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-10-27 15:02:16 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Philipp Oeser commented

2020-10-27 15:02:16 +01:00

Could you share that example .blend file please?

Fernando Alcala commented

2020-10-27 19:46:39 +01:00

Added subscriber: @Fernando-Alcala

Fernando Alcala commented

2020-10-27 19:46:39 +01:00

You are doing something wrong, I ran into no issues.
2020-10-27 11-27-28.mp4

However, if we follow exactly as you say

Try to play

and then add the rest of the objects to the rigid body world, well now you're adding to an already started simulation.

Is what I would think would be wrong, but I tried that and it still worked.2020-10-27 11-40-28.mp4

You are doing something wrong, I ran into no issues. [2020-10-27 11-27-28.mp4](https://archive.blender.org/developer/F9112837/2020-10-27_11-27-28.mp4) However, if we follow exactly as you say >8. Try to play and then add the rest of the objects to the rigid body world, well now you're adding to an already started simulation. Is what I would think would be wrong, but I tried that and it still worked.[2020-10-27 11-40-28.mp4](https://archive.blender.org/developer/F9112914/2020-10-27_11-40-28.mp4)

Brill Jasper Rayel commented

2020-10-28 06:43:27 +01:00

Hi, I downloaded blender to my PC and it works as well. But in my Mac mini, its not doing well. Like theres a default force field or something.

Philipp Oeser commented

2020-11-18 14:39:39 +01:00

In #82126#1043278, @BlenderMacUser wrote:
Hi, I downloaded blender to my PC and it works as well. But in my Mac mini, its not doing well. Like theres a default force field or something.

Could you please describe in more detail what you mean? (maybe a screencast could also help here)
Please also share your example .blend file [before pressing play]

> In #82126#1043278, @BlenderMacUser wrote: > Hi, I downloaded blender to my PC and it works as well. But in my Mac mini, its not doing well. Like theres a default force field or something. Could you please describe in more detail what you mean? (maybe a screencast could also help here) Please also share your example .blend file [before pressing play]

Brill Jasper Rayel commented

2020-11-19 11:41:18 +01:00

What I mean is that I downloaded Blender version 2.83 to my PC and my Mac, the task above works really well with the new install.

Before version with error was 2.9+

I already moved with my concern and you may closed the task. Thank you so much.

What I mean is that I downloaded Blender version 2.83 to my PC and my Mac, the task above works really well with the new install. Before version with error was 2.9+ I already moved with my concern and you may closed the task. Thank you so much.

Philipp Oeser commented

2021-01-17 22:04:08 +01:00

Changed status from 'Needs User Info' to: 'Resolved'

Philipp Oeser closed this issue

2021-01-17 22:04:08 +01:00

Philipp Oeser self-assigned this 2021-01-17 22:04:08 +01:00

Philipp Oeser commented

2021-01-17 22:04:08 +01:00

Sorry, this seems to have slipped under the radar.

I already moved with my concern and you may closed the task. Thank you so much.

Thx getting back, will close then.

Sorry, this seems to have slipped under the radar. > I already moved with my concern and you may closed the task. Thank you so much. Thx getting back, will close then.

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Unexpected explosion on pieces of a fractured cube (Added Rigid Body) #82126