Can't snap between objects with Rigid Body #70126

New Issue

Jon Silkjær Krohn · 2019-09-20T22:20:47+02:00

2019-09-20 22:20:47 +02:00

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
Cant snap to vertex with rigidbody

Exact steps for others to reproduce the error

Duplicate default cube
add rigidbodys to both cubes
enable snap to vertex
try snap to a vertex on 1 of the cubes.

or

Open attached file
try snap to a vertex on 1 of the cubes.

snap_rigid_body.blend

**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** Cant snap to vertex with rigidbody **Exact steps for others to reproduce the error** - Duplicate default cube - add rigidbodys to both cubes - enable snap to vertex - try snap to a vertex on 1 of the cubes. or - Open attached file - try snap to a vertex on 1 of the cubes. [snap_rigid_body.blend](https://archive.blender.org/developer/F8416009/snap_rigid_body.blend)

Jon Silkjær Krohn commented

2019-09-20 22:20:47 +02:00

Added subscriber: @Robo7Gamer

blender-admin commented

2019-09-20 22:20:47 +02:00

#74882 was marked as duplicate of this issue

Germano Cavalcante commented

2019-09-23 15:09:14 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2019-09-23 15:09:14 +02:00

Please provide a simple file demonstrating the problem.

Jon Silkjær Krohn commented

2019-09-24 20:21:54 +02:00

BugReport.blend

[BugReport.blend](https://archive.blender.org/developer/F7773659/BugReport.blend)

Jon Silkjær Krohn commented

2019-09-24 20:22:04 +02:00

There you go

Germano Cavalcante commented

2019-09-25 04:15:00 +02:00

I can't reproduce the problem with the attached file, it snaps to vertices of rigid body cubes normally (pressing ctrl or enabling snap).

Jon Silkjær Krohn commented

2019-09-25 14:43:14 +02:00

Can you snap the rigidbody to the other rigidbody?

Germano Cavalcante commented

2019-09-25 15:05:06 +02:00

Added subscriber: @Sergey

Germano Cavalcante commented

2019-09-25 15:05:06 +02:00

@Sergey, see that file attached in the comment...
The set_trans_object_base_deps_flag_cb indicates that there is a DEG_OB_COMP_TRANSFORM dependence between the two Rigid Body objects.
This causes the object to be snapped to have a BA_SNAP_FIX_DEPS_FIASCO flag.

Why is there this dependence between these Rigid Body objects?

@Sergey, see that file attached in the comment... The `set_trans_object_base_deps_flag_cb` indicates that there is a `DEG_OB_COMP_TRANSFORM` dependence between the two `Rigid Body` objects. This causes the object to be snapped to have a `BA_SNAP_FIX_DEPS_FIASCO` flag. Why is there this dependence between these `Rigid Body` objects?

Sergey Sharybin commented

2019-09-25 16:04:05 +02:00

@mano-wii:

object 1 transform before solver ---> solver ------> object 1 final transform
object 2 transform before solver -----^     \------> object 2 final transform

@mano-wii: ``` object 1 transform before solver ---> solver ------> object 1 final transform object 2 transform before solver -----^ \------> object 2 final transform

blender-admin commented

2019-09-26 11:23:00 +02:00

This issue was referenced by 5603725389

This issue was referenced by 5603725389f7315fe158d93cff650ccaee57c0f9

Sergey Sharybin commented

2019-09-26 15:25:33 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2019-09-26 15:25:33 +02:00

Sergey Sharybin self-assigned this 2019-09-26 15:25:33 +02:00

Christoph Werner commented

2020-02-17 08:37:54 +01:00

Added subscriber: @ChristophWerner

Christoph Werner commented

2020-02-17 08:37:54 +01:00

Version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: 77d23b0bd7, type: Release
build date: 2020-02-13, 01:56:46
platform: Windows

Problem still exists in Blender v2.8.2. -> Can't snap between rigid body objects.
Is this willed? See attached example scene.

How to reproduce

Select one of the house parts (Inside "House" Collection)
Try to snap the selected part to the ground

Not possible

Works when you remove the rigid body physics from the selected objects or ground.

rigid_body_snap_bug02.blend

Version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: 77d23b0bd76f, type: Release build date: 2020-02-13, 01:56:46 platform: Windows --- Problem still exists in Blender v2.8.2. -> Can't snap between rigid body objects. Is this willed? See attached example scene. How to reproduce 1. Select one of the house parts (Inside "House" Collection) 2. Try to snap the selected part to the ground - > Not possible Works when you remove the rigid body physics from the selected objects or ground. [rigid_body_snap_bug02.blend](https://archive.blender.org/developer/F8348250/rigid_body_snap_bug02.blend) ![rigid_body_bug01.gif](https://archive.blender.org/developer/F8344506/rigid_body_bug01.gif)

Germano Cavalcante commented

2020-02-17 18:51:37 +01:00

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

Germano Cavalcante reopened this issue

2020-02-17 18:51:37 +01:00

Germano Cavalcante commented

2020-02-17 18:51:37 +01:00

@ChristophWerner, must be related to D6834, then it will be fixed when the patch is landed.

@ChristophWerner, must be related to [D6834](https://archive.blender.org/developer/D6834), then it will be fixed when the patch is landed.

Christoph Werner commented

2020-02-17 20:36:00 +01:00

Thank you.

Germano Cavalcante commented

2020-02-18 17:29:15 +01:00

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

Germano Cavalcante closed this issue

2020-02-18 17:29:15 +01:00

Germano Cavalcante commented

2020-02-18 17:29:15 +01:00

@ChristophWerner, I cannot reproduce your problem.
If you are sure this is a bug, please submit a new report and carefully follow the instructions. Be sure to provide system information, Blender version, and a .blend file with exact steps to reproduce the problem.

@ChristophWerner, I cannot reproduce your problem. If you are sure this is a bug, please submit a new report and carefully follow the instructions. Be sure to provide system information, Blender version, and a .blend file with exact steps to reproduce the problem.

Christoph Werner commented

2020-02-18 18:06:25 +01:00

In #70126#875399, @mano-wii wrote:
@ChristophWerner, I cannot reproduce your problem.
If you are sure this is a bug, please submit a new report and carefully follow the instructions. Be sure to provide system information, Blender version, and a .blend file with exact steps to reproduce the problem.

Excuse me, please. I forgot to upload the right example file. Now the bug should be reproduced.

Please follow the steps in my 1st post.

The system info is there, too.

> In #70126#875399, @mano-wii wrote: > @ChristophWerner, I cannot reproduce your problem. > If you are sure this is a bug, please submit a new report and carefully follow the instructions. Be sure to provide system information, Blender version, and a .blend file with exact steps to reproduce the problem. Excuse me, please. I forgot to upload the right example file. Now the bug should be reproduced. Please follow the steps in my 1st post. The system info is there, too.

Christoph Werner commented

2020-03-18 10:38:22 +01:00

Bug is still existing in:

version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4ca, type: Release
build date: 2020-03-12, 15:41:08
platform: Windows

Bug is still existing in: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4caf4, type: Release build date: 2020-03-12, 15:41:08 platform: Windows

Philipp Oeser commented

2020-03-18 10:58:12 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-03-18 10:58:12 +01:00

The original issue seems to be resolved:

you can now snap an object [without rigidbody] to a vertex [with rigid body]

What I can reproduce:

you cannot snap between objects [both having a rigid body]

@ChristophWerner: please open a new report "Can't snap between rigid body objects" [this is not exactly the same issue as the original report], and refer to this report as a followup, thx.

The original issue seems to be resolved: - you can now snap an object [without rigidbody] to a vertex [with rigid body] What I **can** reproduce: - you cannot snap between objects [both having a rigid body] @ChristophWerner: please open a new report "Can't snap between rigid body objects" [this is not exactly the same issue as the original report], and refer to this report as a followup, thx.

Christoph Werner commented

2020-03-18 14:48:50 +01:00

In #70126#893280, @lichtwerk wrote:

...

@ChristophWerner: please open a new report "Can't snap between rigid body objects" [this is not exactly the same issue as the original report], and refer to this report as a followup, thx.

Done -> #74882

> In #70126#893280, @lichtwerk wrote: ... > @ChristophWerner: please open a new report "Can't snap between rigid body objects" [this is not exactly the same issue as the original report], and refer to this report as a followup, thx. Done -> #74882

Germano Cavalcante commented

2020-03-19 16:49:17 +01:00

Changed status from 'Resolved' to: 'Confirmed'

Germano Cavalcante reopened this issue

2020-03-19 16:49:17 +01:00

Germano Cavalcante commented

2020-03-19 16:49:17 +01:00

The problem is back.