UVMap attributes unstable when using object info node. #87019

New Issue

DorianB · 2021-03-29T16:36:25+02:00

DorianB commented

2021-03-29 16:36:25 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-28 10:50, hash: e47f5cf197

Short description of error
Potential BUG?
i tried to align the particles tangent to the UV Space origin, everything is working fine as expected
Until i start to change with the transforms rotation values of the emitter object, then the UVSpace is not reliable anymore.
Transforms shouldn't have any impact on these 2Dvector data stored per mesh corner, right?

Sorry if there's a misunderstanding,
I'm pretty sure that UVMap attributes shouldn't be unstable even on an applied object, as this is stored within the mesh data.

File available below

UV Space changin.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 **Blender Version** Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-28 10:50, hash: `e47f5cf197` **Short description of error** Potential BUG? i tried to align the particles tangent to the UV Space origin, everything is working fine as expected Until i start to change with the transforms rotation values of the emitter object, then the UVSpace is not reliable anymore. **Transforms shouldn't have any impact on these 2Dvector data stored per mesh corner, right?** Sorry if there's a misunderstanding, I'm pretty sure that UVMap attributes shouldn't be unstable even on an applied object, as this is stored within the mesh data. File available below ![Capture d’écran 2021-03-29 125744.png](https://archive.blender.org/developer/F9913568/Capture_d_écran_2021-03-29_125744.png) ![ddd.gif](https://archive.blender.org/developer/F9913570/ddd.gif) [UV Space changin.blend](https://archive.blender.org/developer/F9913572/UV_Space_changin.blend)

DorianB commented

2021-03-29 16:36:25 +02:00

Added subscriber: @dodododorian

DorianB changed title from ~~UVMap attributes affected by object info node.~~ to UVMap attributes unstable when using object info node.

2021-03-29 16:37:01 +02:00

Jacques Lucke commented

2021-03-30 12:14:33 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2021-03-30 12:14:33 +02:00

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

Jacques Lucke closed this issue

2021-03-30 12:14:33 +02:00

Jacques Lucke commented

2021-03-30 12:14:33 +02:00

This seems to be working correctly. The uv map is "stable" in the sense that the errors do not change their rotation when you rotate the plane. If you do want that the arrows rotate with the plane, then you have to take to planes rotation into account as shown below.

This seems to be working correctly. The uv map is "stable" in the sense that the errors do not change their rotation when you rotate the plane. If you do want that the arrows rotate with the plane, then you have to take to planes rotation into account as shown below. ![image.png](https://archive.blender.org/developer/F9914396/image.png)

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UVMap attributes unstable when using object info node. #87019