Questions tagged [add-on]

An add-on is a python script or plugin created to expand Blender's functionality. There are many add-ons in the official builds of Blender, and with every new version comes new add-ons.

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How do we add the Mesh: Snap_Utilities_Line tool to Object Mode?

How do we add the Mesh: Snap_Utilities_Line tool to Object Mode? We can create full 3D shapes with it. It's an object creation tool as well The ...
Glen Charles Rowell's user avatar
1 vote
1 answer
14 views

Operator in import category working but showing as invalid syntax when accessing bpy.ops.import

I have several operators that import different file types like this example: ...
Harry McKenzie's user avatar
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Queue Baking Multiple Materials with Multiple UVs into Multiple Textures with the Same UV

can anyone recommend how I can bake: A model with multiple UV sets That has one texture reapplied across the whole mesh by each of those UVs Baked down to a single UV, but a unique output texture ...
Rury Nelson's user avatar
1 vote
0 answers
26 views

Custom Blender Python icons with adjustable colours

I am writing a Blender add-on and I want to add a custom icon into the UI panel. I can do this with bpy.utils.previews, but it seems to only want PNG files so if I ...
Walter's user avatar
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Node wrangler is stacking menus on top of each other?

Why is node wrangler stacking the menus on top of each other when it comes into the shading window. Here's a pic.
Bob's user avatar
  • 33
-2 votes
1 answer
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I'm looking for an Addon that “assembles” sections of buildings and/or objects in a timelapse like effect [closed]

Kind of like a transformers effect, but more scaling from nothing and sliding in from nowhere kind of thing. Almost like a timelapse of the building being made. Swear I’ve seen something like this, ...
Tom's user avatar
  • 11
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32 views

Restore scene data and state after multiple operations

I am working on an addon that will perform various operations in a scene (transformations, assigning materials, setting physics, adding particles, so on) at the press of a key. What I want is to be ...
alexmro's user avatar
  • 51
2 votes
1 answer
91 views

How do you correctly add UI elements to adhere to the typing spec?

Here's my understanding of bpy.props.BoolProperty which offers additional functionality and integration with Blender's UI and data system. Using ...
Harry McKenzie's user avatar
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retarget_bvh addon actions working using GUI but not using script

I want to use the diffeomorphic BVH retargeter Blender addon to animate Makehuman Characters. Using the buttons in the Blender GUI to perform the actions I want works perfectly fine, but using the ...
Jonas's user avatar
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Problem with import_sketchup.py on MAC

Like many others I am having difficulties using the import_sketchup.py on a Macintosh. I tried it for the first time a few months ago and I couldn´t even enable the add-o; exactly like it is described ...
Leopardi's user avatar
1 vote
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Camera won't be aligned to Current View with Python scripting

This is the full code of a simple add-on. The first camera is aligned to view but when I add more than one camera, the rest won’t be aligned. Is there a solution? I tried Temp_override but no luck. <...
MOH's user avatar
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How to determine if a tracking marker is inside a mask?

How can I determine whether a camera tracking marker is inside or outside a mask that I have created in Blender using Python? For instance, if I create a mask in Blender's masking area for a specific ...
Axel Olsson's user avatar
1 vote
0 answers
31 views

Operator for 2D button gizmo is not called

I have a simple GIZMO_GT_button_2d that should invoke an operator when clicked upon but this is not happening. I can call the operator directly with ...
alexmro's user avatar
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0 answers
21 views

How to get the output of another material datablock via Python?

Basically, I want the information that goes into the Shader Output... [image] ...to be accessible from my custom node's output. Basically as if the material output were a group output, if that makes ...
Legoman's user avatar
  • 1,779
2 votes
2 answers
64 views

Step-by-step debugging in Blender UI

I'm currently using VS code to write a Blender script in Python. The script places objects, creates materials, unwraps objects, and finally renders an image. I'm using the "Blender Development&...
Jakethecake's user avatar
2 votes
1 answer
32 views

Armature selection using a eyedropper

I created an addon that uses an eyedropper to select an armature. The type retrieved is determined by how the object is selected. Using an eyedropper makes it an "Object", and using a list ...
Kageji's user avatar
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1 vote
1 answer
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Is it possible to add custom bl_info addon attributes that show up in the Preferences popup?

I have an addon that uses a third party binary and I want to include this information for the user to see. I want to add another type of info to the users in the area marked in yellow but when I add ...
Harry McKenzie's user avatar
1 vote
1 answer
119 views

MAC: executable binary within addon zip loses execute permission when addon zip is installed on Blender

I have made an addon that when installed on Windows works perfectly fine. But when installed on Blender running on Mac OS, the binary contained within the addon zip file loses the execute permission. ...
Harry McKenzie's user avatar
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0 answers
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What is a good alternative to bpy.data.node_groups.input or .output for 4.0?

What is a good alternative to bpy.data.node_groups.input or .output? Basically, ...
Veelus_Super's user avatar
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1 answer
34 views

Is there an addon for automatic UV overlap?

I have a model that pretty much is symmetrical in X and Y axis, I think overlap uv would be pretty smart but too much work doing it all by hand. All solutions to uv overlap I found online are for ...
Simon Kamnev's user avatar
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0 answers
14 views

no limit 2 lightwave object matériau output error

I tried to import my lay out no limit using an addd on but, it gives me this error message I don't understand Could you help me please?
Romain Benito's user avatar
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1 answer
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bpy Camera Stroke Modifier code attempt: Menu not showing, property not working

I'm trying to create an addon that offers a sort of third option from the Screen Space vs World Space stroke thickness. Inspired by this post, the idea is that upon activation, and on every update ...
Michael Weston's user avatar
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0 answers
29 views

Version control of add-ons

I have a couple questions in regards to add-ons, version controls, and how changes to add-on features get handled when loading .blend files that used previous add-on versions. I am using an add-on ...
HelixnSheet's user avatar
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0 answers
46 views

I am getting an error message like 'Trace Back Error' while i try to enable a addon in blender

I am Using Blender 4.0 and i installed Mixamo Auto rigging addon in it. but when i try to enable the addon, an error message pops saying "TRACEBACK" error. the addon is showing in the ...
Team Letrons's user avatar
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1 answer
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Blender Script to apply changes on many materials

i have a Material called "Dust" that has 4 nodes. I now need a script that copies all nodes and paste it to all materials of objects in all activated collections. Then the Output of the Map ...
VICUBE Animation's user avatar
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1 answer
37 views

How to create a script that sets Particle Boid brain rules in Blender 4.0?

I am trying to update an add-on called Spyderfy for Blender 4.0. It's a simple script that essentially does two things within its script. 1.) Imports 3d Insect models from a directory. 2.) Creates a ...
Brad Hamilton's user avatar
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0 answers
13 views

Python reuse toolbar icon - not centered in button

I am trying to duplicate the cursor buttons in a side panel. the attached code gives most of the functionality but the icon is not centered on the button in the UI changing the x_scale does not help ...
Timm Carson's user avatar
0 votes
1 answer
43 views

Using a script to set the current values of a shader node groups sockets, as their new "default" values

I'm trying to fix an old discontinued addon, but the new bpy changes in 4.0 are throwing me off. I've tried implementing the new 'tree.interface' elements, but it keeps spitting errors. And of course ...
Cody Setchfield SMOUSE's user avatar
0 votes
1 answer
43 views

Add-on Dev: Workflow using functions and modules?

First a small background story; I'm currently new into python development and I am teaching it myself on a hands on project. I'm developing an add-on in Blender 4.0 and sofar it goes all well (thanks ...
STRnine's user avatar
1 vote
1 answer
69 views

Can you pavé gems based on surface instead of topology?

I've made jewellery for long time now and I never figured out one thing if its even possible to do in Blender, if you can pavé the gems based on a surface and not based purely on its topology. I know ...
yarin's user avatar
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1 vote
0 answers
65 views

My blender 4.0.2 freezes while these errors show (charset_normalizer)

Sometimes when I open my blender 4.0.2 (usually after restart of the PC), it freezes for a few minutes while these errors show (charset_normalizer) This does not happen when I force close it once and ...
ursingh's user avatar
  • 11
2 votes
1 answer
21 views

(Beginner Here) How to Bevel All Curves At Once

I am a new Blender user attempting to animate CAD files 3D printing. I have managed to import G-Code into Blender using an Add-In, but they come in as curves without volume and I need to make them ...
Brian's user avatar
  • 23
1 vote
0 answers
32 views

How do I fix XYZ Math Surface error "'NoneType' object is not subscriptable"?

I am trying to create an object using the Add > Mesh > Math Function > XYZ Math Surface option from the Add Mesh Extra Objects add-on. However, when I input my equation ...
Lawton's user avatar
  • 177
0 votes
1 answer
204 views

How do I change the location where addons are saved? Windows Blender 4.0+

The standard place to save addons is from C:\%appdata%\Blender Foundation\Blender\4.0\scripts\addons\ Inside Preferences, I go to Preferences > File > Script ...
George 6ix9ine's user avatar
0 votes
1 answer
27 views

Why is register not called when I blender version is set to 2.78 in my bl_info?

I noticed that Blender doesn't call register() on my addon when my bl_info specifies ...
Melvin Sovereign's user avatar
2 votes
2 answers
215 views

Export curves to SVG missing in 4.0. Is there an alternative workflow?

Is this a bug or some feature that I haven't read about? In 3.6 and earlier there is the menu option to export curves to SVG. It's gone in 4.0 and I can not find any addon that the option is attached ...
dval's user avatar
  • 1,130
0 votes
0 answers
72 views

Traceback Errors when installing addons. No Module Folder in Blender Foundation Folder, and addon is not showing up inside of the addons folder

Blender 4.0 This is the 3rd fresh install, using the installer to delete all blender files, using windows to delete all files, and manually doing it to make sure it was not corrupted. When installing ...
Esther Ikir's user avatar
0 votes
0 answers
28 views

Are there any NURBS Add-ons or future NURBS updates for Blender?

Is there any information about NURBS add-ons that can improve the functionality of NURBS within Blender? Are there any upcoming Blender updates planned to enhance NURBS capabilities?
blend33's user avatar
0 votes
1 answer
16 views

paste keyframes operator with offset blender (connect paste)

I would like to know if there is an addon or its already in-built function in blender. I need to paste keyframes realative to the existing pose, so for example I need a character starting with a ...
Michael Lebedev's user avatar
0 votes
0 answers
15 views

How to enable editing collections in addon

I´m using blender 3.6 and I can´t figure out how to enable editing collection inputs in N-panel. Thanks for any help
Tobiáš Pisarovič's user avatar
0 votes
0 answers
15 views

How do you use the Mesh To Hair add-on that you installed in Blender 4

I installed Mesh to hair add on by Luwizart but I cannot find any controls for the add on. I watched the video over and over hoping I could find out how to access it. Nothing. I am new to Blender. ...
user178189's user avatar
0 votes
0 answers
26 views

How Can I Create Value Slider In Blender 3.6 With Python Api?

How can I create a value silder like dimensions panel in Blender 3.6 with Python Api. I can already access dimension value and change those value with python script. I have the code for my slider ...
nikhil's user avatar
  • 23
0 votes
0 answers
65 views

When importing a CAD model into Blender, is there a way to make the surfaces split cleanly?

I usually use IRONCAD (CAD for mechanical design) in my work, and when I import a model created with this CAD into Blender, it is imported with a dirty division of the surface tangent to the curved ...
taiga's user avatar
  • 1
0 votes
0 answers
21 views

Custom Panel Ignores ui_scale and ui_units

i was using a pie_menu previously but decided to switch to a panel to make use of the "keep_open" property after converting the UI to work with a panel i noticed the ui_units and ui_scale ...
ValyArhal's user avatar
0 votes
0 answers
47 views

Cloth simulation is tearing during the character animation

I'm using Simply Cloth Pro add-on and trying to practice with cloth simulation. I took Mixamo animated characted and trying to dress him up. But when his leg is moving up the pants are tearing on his ...
Alex's user avatar
  • 13
0 votes
1 answer
59 views

Minimal object add-on UI with sub-meshes and Redo

I finally have this working UI, after exploring many rabbit-holes, so wanted to share it in the hope of improving its performance. Follow-up to this question. The key goal is to preserve the 'redo' ...
koober's user avatar
  • 51
0 votes
1 answer
21 views

MeasureIt giving error on rendering

All worked perfectly until I press render on MeasureIt tab. Here's the error ...
MD RAFI's user avatar
0 votes
0 answers
21 views

4.0 substitute for `SpaceUVEditor.pixel_snap_mode`?

I got a plugin that does not work on 3.6 or 4.0, I'm getting the error: ...
Abel Gutiérrez's user avatar
1 vote
1 answer
52 views

all the body moves except the head

The head I created in the nomad program (iPad) I made the bone but the head that I made doesn't movie. How do I solve that?
user avatar
1 vote
0 answers
22 views

How to run an operator on UILayout.prop changes

I have a UILayout.prop(object, 'rotation_euler') to rotate the active object, a UILayout.prop(object, 'rotation_quaternion') and an operator to update the object rotation_quaternion property. ...
Antonio's user avatar
  • 357

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