Curve Trim not working on closed curves, not even with cyclic attribute off #91957

Closed
opened 2021-10-05 08:38:31 +02:00 by Mitranca Vladimir · 6 comments

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon R7 200 Series ATI Technologies Inc. 4.5.14831 Core Profile Context 21.5.2 27.20.20903.8001

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-10-04 20:40, hash: 18959c502d
Worked:blender-3.0.0-alpha+master.c53ffda8a496-windows.amd64-release

Short description of error
Before fields, Curve Trim worked on circles, squares, etc if the cyclic attribute was off. In fields it is not working

Exact steps for others to reproduce the error
Add Curve Circle->Curve Trim->Connect to Output->create output attribute to control cyclic->set cyclic to off

Test File:
GNf-bug-curve_trim.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: AMD Radeon R7 200 Series ATI Technologies Inc. 4.5.14831 Core Profile Context 21.5.2 27.20.20903.8001 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-10-04 20:40, hash: `18959c502d` Worked:blender-3.0.0-alpha+master.c53ffda8a496-windows.amd64-release **Short description of error** Before fields, Curve Trim worked on circles, squares, etc if the cyclic attribute was off. In fields it is not working **Exact steps for others to reproduce the error** Add Curve Circle->Curve Trim->Connect to Output->create output attribute to control cyclic->set cyclic to off Test File: [GNf-bug-curve_trim.blend](https://archive.blender.org/developer/F10775974/GNf-bug-curve_trim.blend)

Added subscriber: @mitranca.vladimir

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Added subscriber: @PratikPB2123

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

Changed status from 'Needs Triage' to: 'Confirmed'
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Added subscriber: @HooglyBoogly

Added subscriber: @HooglyBoogly
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Changed status from 'Confirmed' to: 'Archived'

Changed status from 'Confirmed' to: 'Archived'
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Thanks for the report. In your node group, cyclic is turned off after the curve trim node, so it does not see a trimmed curve but a cyclic curve. If I move the curve trim node to a second modifier, it works.

Since there is a to do task for supporting cyclic splines, I don't think this is a bug: #91936

Thanks for the report. In your node group, cyclic is turned off *after* the curve trim node, so it does not see a trimmed curve but a cyclic curve. If I move the curve trim node to a second modifier, it works. Since there is a to do task for supporting cyclic splines, I don't think this is a bug: #91936
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Reference: blender/blender#91957
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