Rotated armature changes position after two round trips #56852

New Issue

Roselle · 2018-09-20T10:23:27+02:00

Roselle commented

2018-09-20 10:23:27 +02:00

System Information
Ubuntu 18.04.1 LTS
GeForce GTX 1080

Blender Version
Broken: 2.79b

Short description of error
Based on this bug report. Original bug report

In this report, the bug has been boiled down to the simplest object which can be easily replicated.
I'm reporting this as a separate issue for it might not be the same bug, or it could be the very bug that is causing the distortion ultimately
Doing the round trip twice is necessary due to files being passed around.

Exact steps for others to reproduce the error

Create a plane
Create a bone
Rotate bone (Rotation can be done in object mode. To note it's position, rotate the armature at 90 degrees on the Y axis and snap the head/tail in edit mode to the plane vertex points.)
Parent the plane to the armature (automatic weights)
Export the file twice (round trip) using the standard collada exporter
The armature position/rotation will be far away from the plane.

Screenshot of the before and after the export.

rig1.blend - this is the bug after the second export
rig1.blend

Sys info.
system-info.txt

**System Information** Ubuntu 18.04.1 LTS GeForce GTX 1080 **Blender Version** Broken: 2.79b **Short description of error** Based on this bug report. [Original bug report ](https://developer.blender.org/T56516) In this report, the bug has been boiled down to the simplest object which can be easily replicated. I'm reporting this as a separate issue for it might not be the same bug, or it could be the very bug that is causing the distortion ultimately Doing the round trip twice is necessary due to files being passed around. **Exact steps for others to reproduce the error** - Create a plane - Create a bone - Rotate bone (Rotation can be done in object mode. To note it's position, rotate the armature at 90 degrees on the Y axis and snap the head/tail in edit mode to the plane vertex points.) - Parent the plane to the armature (automatic weights) - Export the file twice (round trip) using the standard collada exporter - The armature position/rotation will be far away from the plane. Screenshot of the before and after the export. ![rig.png](https://archive.blender.org/developer/F4762511/rig.png) rig1.blend - this is the bug after the second export [rig1.blend](https://archive.blender.org/developer/F4762099/rig1.blend) Sys info. [system-info.txt](https://archive.blender.org/developer/F4762564/system-info.txt)

Roselle commented

2018-09-20 10:23:27 +02:00

Added subscriber: @cereszal-1

Gaia Clary self-assigned this 2018-09-20 11:09:39 +02:00

Gaia Clary commented

2018-11-26 23:35:03 +01:00

Changed status from 'Open' to: 'Resolved'

Gaia Clary closed this issue

2018-11-26 23:35:03 +01:00

Gaia Clary commented

2018-11-26 23:35:03 +01:00

This issue is fixed in Blender 2.8 - beta (or most recent developer build)

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Rotated armature changes position after two round trips #56852