Smart UV Unwrap - bad island spaceing #63391

Closed
opened 2019-04-08 13:56:38 +02:00 by Tomasz Muszynski · 17 comments

Blender Version
Broken: version: 2.80 (sub 54), branch: blender2.7, commit date: 2019-04-07 15:02, hash: 75f551faca
Worked: blender-2.80.0-git.adfdae3fc2f4-windows64 / 2019-03-25

Short description of error
SmartUV unwrapping works WRONG. It does not make even island margins as I made before.
It groups it in some strange way w/o proper margin.

New-way WRONG unwrapping:
SmartUV-New.JPG

Old-way GOOD unwrapping:
SmartUV-Old.JPG

Exact steps for others to reproduce the error
Just use smart UV unwrap on complex meshes.

**Blender Version** Broken: version: 2.80 (sub 54), branch: blender2.7, commit date: 2019-04-07 15:02, hash: `75f551faca` Worked: blender-2.80.0-git.adfdae3fc2f4-windows64 / 2019-03-25 **Short description of error** SmartUV unwrapping works WRONG. It does not make even island margins as I made before. It groups it in some strange way w/o proper margin. New-way WRONG unwrapping: ![SmartUV-New.JPG](https://archive.blender.org/developer/F8332353/SmartUV-New.JPG) Old-way GOOD unwrapping: ![SmartUV-Old.JPG](https://archive.blender.org/developer/F8332355/SmartUV-Old.JPG) **Exact steps for others to reproduce the error** Just use smart UV unwrap on complex meshes.

Added subscriber: @TomaszMuszynski

Added subscriber: @TomaszMuszynski

#68300 was marked as duplicate of this issue

#68300 was marked as duplicate of this issue

#63397 was marked as duplicate of this issue

#63397 was marked as duplicate of this issue

Added subscribers: @brecht, @ZedDB

Added subscribers: @brecht, @ZedDB
Sebastian Parborg self-assigned this 2019-04-09 18:46:21 +02:00

@brecht how do you want to handle this? We would have to make the margin logic more advanced if we want to have it scale independent and uniform.

@brecht how do you want to handle this? We would have to make the margin logic more advanced if we want to have it scale independent and uniform.

Added subscriber: @MichaelBenoist-2

Added subscriber: @MichaelBenoist-2

I would like to ask you if you are going to implement sth new then make for it an option to set ( for example for new SmartUV margin analysis: advancedmargin=1 in python code with some checkbox in SmartUV unwrap for GUI ) .
Then new solution will not disturb current well working solution :)
And If I will want to use new solution then I will use specific option to enable it.
Simple and comfortable for everyone. Please roll-back SmartUV default behaviour to the day before that update.
I hope you understand that many of us working with Blender 2.80 in "production mode" - simply because is better in many aspects that 2.79 :)
Thank you for your effort and understanding.

I would like to ask you if you are going to implement sth new then make for it an option to set ( for example for new SmartUV margin analysis: advancedmargin=1 in python code with some checkbox in SmartUV unwrap for GUI ) . Then new solution will not disturb current well working solution :) And If I will want to use new solution then I will use specific option to enable it. Simple and comfortable for everyone. Please roll-back SmartUV default behaviour to the day before that update. I hope you understand that many of us working with Blender 2.80 in "production mode" - simply because is better in many aspects that 2.79 :) Thank you for your effort and understanding.

No one is going to fix this?
Because of this experiment I cannot make proper Lightmaps based on SmartUV cause my add-on needs to create proper islands margins based on SmartUV.
:(

No one is going to fix this? Because of this experiment I cannot make proper Lightmaps based on SmartUV cause my add-on needs to create proper islands margins based on SmartUV. :(

The reason this broke is because we tried to fix an other issue. So we will have to carefully think this through otherwise this will only lead to more issues down the line.

If you are using a beta product in production, then you will have to expect that these things will happen.
Currently there are a lot more urgent crashing and stability issues that needs to be fixed so usability issues like these will be solved later.

If you have any experience in UV packing, then I guess you and I can try to figure out a good solution.
Are you up for it?

The reason this broke is because we tried to fix an other issue. So we will have to carefully think this through otherwise this will only lead to more issues down the line. If you are using a beta product in production, then you will have to expect that these things will happen. Currently there are a lot more urgent crashing and stability issues that needs to be fixed so usability issues like these will be solved later. If you have any experience in UV packing, then I guess you and I can try to figure out a good solution. Are you up for it?

I see that I have to add UVPackmaster to my current workflow.
Hope you will figure it out soon.
Thank you.

I see that I have to add UVPackmaster to my current workflow. Hope you will figure it out soon. Thank you.

Added subscribers: @HirotakaImagawa, @mano-wii

Added subscribers: @HirotakaImagawa, @mano-wii
Sebastian Parborg was unassigned by Dalai Felinto 2019-12-23 16:34:42 +01:00
Member

Added subscriber: @Jeroen-Bakker

Added subscriber: @Jeroen-Bakker
Member

To my knowledge there are no active development projects on the UV mapping area for the upcoming time. I will set this to known issue as this is seemed to be a regression.
Note that I do would like to work on this topic as it is close related to some future planned ideas. Due to priorities I don't know when I will be able to look into this.

@TomaszMuszynski It would really help us when we have verifyable reports. At this moment it just say it doesn't work, not telling what you expect, in which version it did work better. And what does better mean?

To my knowledge there are no active development projects on the UV mapping area for the upcoming time. I will set this to known issue as this is seemed to be a regression. Note that I do would like to work on this topic as it is close related to some future planned ideas. Due to priorities I don't know when I will be able to look into this. @TomaszMuszynski It would really help us when we have verifyable reports. At this moment it just say it doesn't work, not telling what you expect, in which version it did work better. And what does better mean?

There are old and new images in the report description, I think they quite clearly explain the problem. The old one is better, and the new one is hardly useful.

There are old and new images in the report description, I think they quite clearly explain the problem. The old one is better, and the new one is hardly useful.

Added subscriber: @Chris_Blackbourn

Added subscriber: @Chris_Blackbourn

Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'
Chris Blackbourn self-assigned this 2022-10-31 09:57:28 +01:00

Duplicate of #90782 Fixed in c2256bf7f7

Duplicate of #90782 Fixed in c2256bf7f714
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Reference: blender/blender#63391
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