Extruded path not smooth after deleting vertices #100564

New Issue

Emre Can Özcan · 2022-08-22T16:06:35+02:00

Emre Can Özcan commented

2022-08-22 16:06:35 +02:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59

Blender Version
Broken: version: 3.2.2, branch: master, commit date: 2022-08-02 18:15, hash: bcfdb14560
Worked: (newest version of Blender that worked as expected)

Short description of error

Exact steps for others to reproduce the error
Shift + A
Curves > Path
Edit Mode
Extrudde & Displace Vertices
Object Mode
Push Smooth Path aside

Same Process for the Bug:
Shift + A
Curves > Path
Edit Mode
Delete Down every vertex down to 1-2 Vertices
Extrude from the last remaining Vertex
Displace Vertices
Object Mode
Path not Smooth anymore

2022-08-22_15-52-15.mp4

Smooth Path Bug.blend

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59 **Blender Version** Broken: version: 3.2.2, branch: master, commit date: 2022-08-02 18:15, hash: `bcfdb14560` Worked: (newest version of Blender that worked as expected) **Short description of error** **Exact steps for others to reproduce the error** Shift + A Curves > Path Edit Mode Extrudde & Displace Vertices Object Mode Push Smooth Path aside Same Process for the Bug: Shift + A Curves > Path Edit Mode Delete Down every vertex down to 1-2 Vertices Extrude from the last remaining Vertex Displace Vertices Object Mode Path not Smooth anymore [2022-08-22_15-52-15.mp4](https://archive.blender.org/developer/F13411294/2022-08-22_15-52-15.mp4) [Smooth Path Bug.blend](https://archive.blender.org/developer/F13411300/Smooth_Path_Bug.blend)

Emre Can Özcan commented

2022-08-22 16:06:35 +02:00

Added subscriber: @EmreCanOezcan

Zafer_EC commented

2022-08-22 21:07:24 +02:00

Added subscriber: @Zafer_EC

Zafer_EC commented

2022-08-22 21:07:24 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Zafer_EC commented

2022-08-22 21:07:24 +02:00

Technically this is not an error. When you delete all the points in the beginning, you have minimized the calculation value. This doesn't change when you add new points, as this is a manual setting. To fix this, follow this way; Properties --> Object Data Properties(with green icon) --> Active Spline tab --> Order U (default is 5, but decreases to 2 when points are deleted). If this fixes the issue, mark it as "Solved".

Emre Can Özcan commented

2022-08-22 21:19:19 +02:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

Emre Can Özcan commented

2022-08-22 21:19:19 +02:00

Thanks for the Quick response!
Yes this actually fixed it.

But shouldn't this still be considered a problem, because most likely many users are going to have this problem at some point, which is not artist friendly.

I am in no position of being able to judge this in any case, because I am not experienced as a UI Designer or as a Developer, however as a Artist I felt frustrated and helpless, because this was a really hidden option to enable that you don't casually stumble upon.
Can't this be investigated to have some changes of the behavior to be less likely to "cause errors"

Thank you again!

Thanks for the Quick response! Yes this actually fixed it. But shouldn't this still be considered a problem, because most likely many users are going to have this problem at some point, which is not artist friendly. I am in no position of being able to judge this in any case, because I am not experienced as a UI Designer or as a Developer, however as a Artist I felt frustrated and helpless, because this was a really hidden option to enable that you don't casually stumble upon. Can't this be investigated to have some changes of the behavior to be less likely to "cause errors" Thank you again!

Zafer_EC commented

2022-08-22 22:28:49 +02:00

I agree. And it's actually not that hard to fix it. A few lines of code is all it takes to automate this. I hope they fix it. Because it would make more sense to change this value later. I'm glad I helped : )

Emre Can Özcan commented

2022-09-25 12:44:19 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Needs Triage'

Germano Cavalcante commented

2022-09-27 05:02:09 +02:00

Added subscribers: @ideasman42, @mano-wii

Germano Cavalcante commented

2022-09-27 05:02:09 +02:00

Thanks for the report.
The source of this problem is the same one described in #40378 (Nurbs curve order setting won't preserve on duplication)

In #40378#231900, @ideasman42 wrote:
This is intentionally clamped, but it could be clamped at runtime so that it would be possible to extrude and keep previous order.

Set as TODO:
http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Curves

The TODO page has been moved to #55362 (Blender development todo list -- Tools (migrated from wiki))

Although the steps are different, I'll merge the reports. (It could be separate but the description needs to be edited).

Thanks for the report. The source of this problem is the same one described in #40378 (Nurbs curve order setting won't preserve on duplication) > In #40378#231900, @ideasman42 wrote: > This is intentionally clamped, but it could be clamped at runtime so that it would be possible to extrude and keep previous order. > > Set as TODO: > http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Curves The TODO page has been moved to #55362 (Blender development todo list -- Tools (migrated from wiki)) Although the steps are different, I'll merge the reports. (It could be separate but the description needs to be edited).

Germano Cavalcante commented

2022-09-27 05:02:18 +02:00

Closed as duplicate of #55362

Germano Cavalcante closed this issue

2022-09-27 05:02:18 +02:00

Germano Cavalcante commented

2022-09-27 05:02:32 +02:00

Closed as duplicate of #55362

Germano Cavalcante closed this issue

2022-09-27 05:02:32 +02:00

Germano Cavalcante commented

2022-09-27 05:02:59 +02:00