A combination of "Child of" constraint and "Rigid Body" physics has no inertia. #70075

New Issue

Michael George · 2019-09-19T15:53:29+02:00

Michael George commented

2019-09-19 15:53:29 +02:00

System Information
Operating system: Windows-10-10.0.10240 64 Bits
Graphics card: GeForce GT 710/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.65

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: (optional)

Short description of error
A Rigid body (box) is a "Child of" an armature that consists of some bones. When the child of constraint is disabled, the rigid body goes to its original place instead of inheriting the velocity of the moving armature (It should be thrown away after being disconnected).

Exact steps for others to reproduce the error
Instead of describing the exact steps, I uploaded the .blend file. You can simply download it and play the animation an see the result yourself.

bring something and throw it.blend

I really want to thank the blender team and developers for their great job. Much appreciated. You're great smart inventors and programmers. Thanks for giving us such great software.

**System Information** Operating system: Windows-10-10.0.10240 64 Bits Graphics card: GeForce GT 710/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.65 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: (optional) **Short description of error** A Rigid body (box) is a "Child of" an armature that consists of some bones. When the child of constraint is disabled, the rigid body goes to its original place instead of inheriting the velocity of the moving armature (It should be thrown away after being disconnected). **Exact steps for others to reproduce the error** Instead of describing the exact steps, I uploaded the .blend file. You can simply download it and play the animation an see the result yourself. [bring something and throw it.blend](https://archive.blender.org/developer/F7758373/bring_something_and_throw_it.blend) I really want to thank the blender team and developers for their great job. Much appreciated. You're great smart inventors and programmers. Thanks for giving us such great software.

Michael George commented

2019-09-19 15:53:29 +02:00

Added subscriber: @MikeBlenderLover

David Vogel commented

2019-09-19 16:04:36 +02:00

Added subscriber: @Dadido3

David Vogel commented

2019-09-19 16:04:36 +02:00

In my opinion not a bug: You need to disable the "Animated" property for the rigid body object.

Ideally you animate that propery, and disable in the same moment you disable your constraint:

bring something and throw it.blend

In my opinion not a bug: You need to disable the "Animated" property for the rigid body object. ![grafik.png](https://archive.blender.org/developer/F7758401/grafik.png) Ideally you animate that propery, and disable in the same moment you disable your constraint: [bring something and throw it.blend](https://archive.blender.org/developer/F7758403/bring_something_and_throw_it.blend)

Michael George commented

2019-09-19 16:45:55 +02:00

You're right about that. Thanks for your comment and sorry for inconvenience :) It's now solved.

Michael George commented

2019-09-20 10:02:42 +02:00

Changed status from 'Open' to: 'Archived'

Michael George closed this issue

2019-09-20 10:02:42 +02:00

Michael George self-assigned this 2019-09-20 10:02:42 +02:00

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A combination of "Child of" constraint and "Rigid Body" physics has no inertia. #70075