Array offset with multiple shapes #73625

New Issue

Adam Earle · 2020-02-06T03:28:21+01:00

Adam Earle commented

2020-02-06 03:28:21 +01:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.87

Blender Version
Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: f1aa4d18d4
Worked: (optional)

Short description of error
Seem to be a bug based on the array modifier for other objects.
Tested on the current blender and 82 and 83.
When you move a Grease Pencil shapes around in edit mode on the same layer the offset in space progressively changes.

If you have any problem please feel free to contact me and I will do my best to explain

Here are two examples its hard for me to work out what's going wrong here

Exact steps for others to reproduce the error

Create a grease pencil and enter draw mode.
Create two materials both with a solid fill and a stroke.
enter front view and Draw square close to its origin exit edit mode.
add an array modifier.
select another color to be your fill for the array modifier.
You will notice that solid fill color doesn't work switch to checkers (this another bug I will file).
Enter edit mode of the grease pencil object and move the square around one screen (the square will either stay the same distance or progressively offset in space further and further from the sourced shape).

You don't need to watch this you video with timestamps in the description that's 6 minutes long (watch in 2x and it's half the time) but you will see what is trying to be achieved here.

this link will show you the offset problem https:*youtu.be/Ha7SYDI1Hlc?t=51 it will take you 10 second to watch

Attached is a blend. file
More obvious offset.blend
Working_with_weird_offset.blend
system-info.txt

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.87 **Blender Version** Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: `f1aa4d18d4` Worked: (optional) **Short description of error** Seem to be a bug based on the array modifier for other objects. Tested on the current blender and 82 and 83. When you move a Grease Pencil shapes around in edit mode on the same layer the offset in space progressively changes. If you have any problem please feel free to contact me and I will do my best to explain Here are two examples its hard for me to work out what's going wrong here ![EQAuVGZUYAAB6H5.jpg](https://archive.blender.org/developer/F8324700/EQAuVGZUYAAB6H5.jpg) ![EQBCRvnU0AIsyj6.jpg](https://archive.blender.org/developer/F8324703/EQBCRvnU0AIsyj6.jpg) **Exact steps for others to reproduce the error** 1. Create a grease pencil and enter draw mode. 2. Create two materials both with a solid fill and a stroke. 3. enter front view and Draw square close to its origin exit edit mode. 4. add an array modifier. 5. select another color to be your fill for the array modifier. 6. You will notice that solid fill color doesn't work switch to checkers (this another bug I will file). 7. Enter edit mode of the grease pencil object and move the square around one screen (the square will either stay the same distance or progressively offset in space further and further from the sourced shape). You don't need to watch this you video with timestamps in the description that's 6 minutes long (watch in 2x and it's half the time) but you will see what is trying to be achieved here. this link will show you the offset problem [https:*youtu.be/Ha7SYDI1Hlc?t=51 ](https:*youtu.be/Ha7SYDI1Hlc?t=51) it will take you 10 second to watch Attached is a blend. file [More obvious offset.blend](https://archive.blender.org/developer/F8324735/More_obvious_offset.blend) [Working_with_weird_offset.blend](https://archive.blender.org/developer/F8324709/Working_with_weird_offset.blend) [system-info.txt](https://archive.blender.org/developer/F8324708/system-info.txt)

Adam Earle commented

2020-02-06 03:28:21 +01:00

Added subscriber: @AdamEarle

Adam Earle commented

2020-02-06 10:25:07 +01:00

Just an update on this. I tested this out on v2.80.75 and it seems to be working. I hope this can help.

Working Maybe.blend
system-info.txt

Just an update on this. I tested this out on v2.80.75 and it seems to be working. I hope this can help. [Working Maybe.blend](https://archive.blender.org/developer/F8325165/Working_Maybe.blend) [system-info.txt](https://archive.blender.org/developer/F8325160/system-info.txt)

Richard Antalik commented

2020-02-06 21:01:49 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-02-06 21:01:49 +01:00

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

Richard Antalik commented

2020-02-06 21:01:49 +01:00

Array modifier will work relative to object origin, so with scale factor, points further from origin will produce greater offset.

Is this workflow based on any tutorial or manual that would suggest that this shouldn't be the case?

Perhaps you could use multiple strokes modifier for this?https://docs.blender.org/manual/en/dev/grease_pencil/modifiers/generate/multiple_strokes.html

Array modifier will work relative to object origin, so with scale factor, points further from origin will produce greater offset. Is this workflow based on any tutorial or manual that would suggest that this shouldn't be the case? Perhaps you could use multiple strokes modifier for this?https://docs.blender.org/manual/en/dev/grease_pencil/modifiers/generate/multiple_strokes.html

Adam Earle commented

2020-02-07 00:30:47 +01:00

Is it ok to say I think you might be incorrect?

It works in 2.8 as it should. Also when you take a look at an array on a 3D model not grease pencil object you don't get this behavior either. On top of all of that adding the simplify modifier makes the array modifier perform correctly?

Maybe take another look at this discord channel to get a better idea https://discord.gg/fNCXBe

Also here is a test from 2.8 Stroke_setup.blend

Thanks, Ad

Is it ok to say I think you might be incorrect? It works in 2.8 as it should. Also when you take a look at an array on a 3D model not grease pencil object you don't get this behavior either. On top of all of that adding the simplify modifier makes the array modifier perform correctly? Maybe take another look at this discord channel to get a better idea https://discord.gg/fNCXBe Also here is a test from 2.8 [Stroke_setup.blend](https://archive.blender.org/developer/F8326590/Stroke_setup.blend) Thanks, Ad

Richard Antalik commented

2020-02-07 01:22:25 +01:00

Added subscriber: @antoniov

Richard Antalik commented

2020-02-07 01:22:25 +01:00

@AdamEarle I have opened the file in version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
As soon as I toggle edit / object mode, outline goes off-center

@antoniov Can you tell if array modifier can be used to create consistent stroke outline, if stroke is not placed at origin?

@AdamEarle I have opened the file in version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` As soon as I toggle edit / object mode, outline goes off-center @antoniov Can you tell if array modifier can be used to create consistent stroke outline, if stroke is not placed at origin?

Adam Earle commented

2020-02-07 02:05:23 +01:00

The stroke fill is a tileable texture.
That texture is driven by the position of the bone. This way it looks like it's driven on every frame.
The Appearance of the stroke is controlled by the scale of the array.
The Translation values should be left at 0.
This is what gives the appearance of the stroke.
The illusion of a stroke this way offers a very controllable stroke thickness.

Edit mode: When you enter edit mode make sure the "Display edit mode in stroke is checked.

If you have any other questions please just ask.

Ad

The stroke fill is a tileable texture. That texture is driven by the position of the bone. This way it looks like it's driven on every frame. The Appearance of the stroke is controlled by the scale of the array. The Translation values should be left at 0. This is what gives the appearance of the stroke. The illusion of a stroke this way offers a very controllable stroke thickness. Edit mode: When you enter edit mode make sure the "Display edit mode in stroke is checked. ![Screenshot_1.png](https://archive.blender.org/developer/F8326785/Screenshot_1.png) If you have any other questions please just ask. Ad

Antonio Vazquez commented

2020-02-07 09:09:53 +01:00

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

Antonio Vazquez self-assigned this 2020-02-07 09:09:53 +01:00

Antonio Vazquez commented

2020-02-07 09:09:53 +01:00

The problem is related to Scale of the array.

blender-admin commented

2020-02-07 16:35:26 +01:00

This issue was referenced by 677e027f20

This issue was referenced by 677e027f2069dac18891db931c860542cbcb4bbe

Antonio Vazquez commented

2020-02-07 16:36:46 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Antonio Vazquez closed this issue

2020-02-07 16:36:46 +01:00

Adam Earle commented

2020-02-08 04:19:09 +01:00

You need minions and a huge bloody award.

We have Suzan awards, but I think there should Developers awards. Perhaps BCON 3?

But seriously freakn well done again to ya. Ad

You need minions and a huge bloody award. We have Suzan awards, but I think there should Developers awards. Perhaps BCON 3? But seriously freakn well done again to ya. Ad

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Array offset with multiple shapes #73625