free style does not work if there are nested collections #85451

New Issue

stefano · 2021-02-07T16:04:56+01:00

stefano commented

2021-02-07 16:04:56 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: 5be9ef4177
Worked: (newest version of Blender that worked as expected)

Short description of error
I'm not sure it can be called "bug", but if I apply freestyle to a collection (which I call "Lines") that contains others, it doesn't work

Exact steps for others to reproduce the error
I create objects to which I want to apply freestyle, I put them inside each of its collections. If I apply the freestyle option to the "Lines" collection it doesn't work. It only works if the objects are directly inside the "Lines" collection. It is a problem when I work on very complex scenes where it is useful to organize objects within many collections and I want to apply freestyle only to some of these collections by inserting them into a larger one (Lines) and leaving the others in another call " no lines "freestyle.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 **Blender Version** Broken: version: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: `5be9ef4177` Worked: (newest version of Blender that worked as expected) **Short description of error** I'm not sure it can be called "bug", but if I apply freestyle to a collection (which I call "Lines") that contains others, it doesn't work **Exact steps for others to reproduce the error** I create objects to which I want to apply freestyle, I put them inside each of its collections. If I apply the freestyle option to the "Lines" collection it doesn't work. It only works if the objects are directly inside the "Lines" collection. It is a problem when I work on very complex scenes where it is useful to organize objects within many collections and I want to apply freestyle only to some of these collections by inserting them into a larger one (Lines) and leaving the others in another call " no lines "[freestyle.blend](https://archive.blender.org/developer/F9703246/freestyle.blend)

stefano commented

2021-02-07 16:04:56 +01:00

Added subscriber: @stefanocioncoloni

Falk David commented

2021-02-08 13:04:57 +01:00

Added subscriber: @filedescriptor

Falk David commented

2021-02-08 13:04:57 +01:00

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

Falk David commented

2021-02-08 13:04:57 +01:00

I can confirm this issue on the latest 2.93.0 Alpha, branch: master, commit date: 2021-02-08 10:36, hash: ecfd5360a1. The console shows an error:

Error: strokes set empty

which is triggered in blender/source/blender/freestyle/intern/stroke/StyleModule.h:

Operators::StrokesContainer *strokes_set = Operators::getStrokesSet();
if (strokes_set->empty()) {
  cerr << "Error: strokes set empty" << endl;
  Operators::reset();
  return NULL;
}

I can confirm this issue on the latest 2.93.0 Alpha, branch: master, commit date: 2021-02-08 10:36, hash: `ecfd5360a1`. The console shows an error: ``` Error: strokes set empty ``` which is triggered in `blender/source/blender/freestyle/intern/stroke/StyleModule.h`: ``` Operators::StrokesContainer *strokes_set = Operators::getStrokesSet(); if (strokes_set->empty()) { cerr << "Error: strokes set empty" << endl; Operators::reset(); return NULL; } ```

Kristian Holmgren commented

2021-03-19 22:36:48 +01:00

Added subscriber: @XB982

Kristian Holmgren commented

2021-03-19 22:36:48 +01:00

I can also confirm that the same is true when excluding collections (as opposed to including them). Only the objects at the top level in the excluded collection are excluded from freestyle stroke rendering, any objects in any collections within the excluded collection are included in the render.

If this is looked into, it might be worthwhile to add the possibility to include/exclude several different collections at once, e.g. a button to add more "Collection:" boxes or having a list box like for Line Sets. Now the Parameter Editor Mode UI is limited to selecting one collection for either inclusion/exclusion, and you need to go to Python Scripting Mode to make more complex arrangements.

I can also confirm that the same is true when excluding collections (as opposed to including them). Only the objects at the top level in the excluded collection are excluded from freestyle stroke rendering, any objects in any collections within the excluded collection are included in the render. If this is looked into, it might be worthwhile to add the possibility to include/exclude several different collections at once, e.g. a button to add more "Collection:" boxes or having a list box like for Line Sets. Now the Parameter Editor Mode UI is limited to selecting *one* collection for either inclusion/exclusion, and you need to go to Python Scripting Mode to make more complex arrangements.

UtenteFittizio commented

2021-11-08 10:13:16 +01:00

Added subscriber: @UtenteFittizio

stefano commented

2022-04-26 16:04:48 +02:00

the problem is still present in version 3.1.2. Any news on the horizon?
thank you

the problem is still present in version 3.1.2. Any news on the horizon? thank you

Philipp Oeser removed the

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free style does not work if there are nested collections #85451