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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 I add a new material to each individual face in python code?

How do I "diffuse_colour" on individual faces of an object in a python script for a Blender addon?
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1answer
32 views

Leaf variety in sapling addon?

I'm using the Sapling addon in 2.79, and I'm having trouble making the leaves look realistic. As you can see in the screenshot (sorry for the forest HDRI in the background; I know it made the image a ...
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1answer
20 views

Rigify addon does not do its job properly for my character

I am new to the Rigify Addon. I have used it with my character, and it's not working well in some parts such as the face. Link to the blend file Just give me some tips to improve my rig. You can ...
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11 views

Animate Meteor Using Cell Fracture Addon [duplicate]

Hi! I'm experimenting with the Cell Fracture Addon to create a meteor animation. But after fracturing the main object into small pieces, i found out that i have to keyframe every single "animated" ...
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1answer
28 views

How to write a script that executes a list of commands only if a specific object is already inside the scene: Easy question I think!

I was wondering how to write a conditional in a script so that a list of commands runs only if an object IS NOT inside the blender scene currently. For example if "Cube" is already in the scene I ...
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2answers
33 views

When I subdivide a face, how do I get each face from the result in Python?

For example, if I subdivided a square face so there were now 4 faces, how I do iterate through those 4 faces in a Blender add-on?
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21 views

Rendering Coloured PLY Point Cloud in Blender

I came across this video on Vimeo the other day: https://vimeo.com/290181848 I was intrigued as to how this was achieved, and in my impulsive search for answers I came across photogrammetry and the ...
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13 views

Is there any way to register a callback for a bpy.prop undo event?

Is there any way to register a function that gets triggered on a property undo event ? Just like you can register a function for property update, get, or set events. And btw, why properties ...
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20 views

Textures to materials

I have a model that has multiple materials in it. What I want is to make two textures out of them then convert the textures into two materials. Is that possible?
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12 views

F2 addon suddenly doesn't work properly anymore

I was using the F2 addon, but all of the sudden, it just spit out an error, anytime I have two Edge loops, I want to connect with the F key. The error is the following:
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19 views

Blender crash when import sklearn

I am working script Python in addons blender ".config/blender/2.79/scripts/addons/..". In the script, I want to import 'sklearn' (from sklearn.cluster import KMeans)...
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FLIP Fluids Assign different materials to separate fluid objects

I am using the FLIP fluids add-on. I have four different fluid objects which I'd like to each have a different material but because they all are calculated under the same domain I they all have to ...
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21 views

How to know if an object is translating, rotating and/or scaling

In python, is there any simple way to know when an object is having a transformation (location, rotation and/or scale)? The only heavy way I found is to create an object list and to compare the ...
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1answer
18 views

Event key for “TAB” and “TAB + shift” on add-on modal?

I am finalizing a Blender add-on and I have an issue on the modal part with 2 events triggered by TAB or TABSHIFT. Here is the actual code: ...
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1answer
18 views

bsurfaces gpl edition , script version throwing an error

Looks like the bsurface addon is not supported officially according to this answer. It works fine when I am clicking on "Add Surface" button from GUI , but when I execute from script ...
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1answer
26 views

How do I name a selected group via python script

Hi python/blender users, I was wondering if anyone knows a simple python command that allows me to rename the selected group. I am working on a script that requires a renaming mid operator. I found ...
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1answer
18 views

Missing addon in V2.78

I want to build a stair, according to a video of Youtube (https://www.youtube.com/watch?v=i5UrVrmErwQ), using "add mesh : building objects" addon. I've noticed that the addon "add mesh : building ...
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1answer
44 views

turn multiple scripts into addon

I have multiple scripts that i would like to turn into an addon. I already have everything it needs, but i when i click the button to enable the addon in the user preferences it says: ...
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41 views

Bsurfaces - can't set 'cross' or 'follow' [closed]

I'm having trouble using Bsurfaces (GPL, 1.5.1, shipped with Blender) Sequence of events: Create mesh object to contain surface Create series of Bezier splines to be lofted, in a single curve object ...
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1answer
91 views

how to breakdown this line of code to create an add-on ? bpy

how to breakdown (breakdown, apportionment) this command line ? CODE LINE: ...
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24 views

How do I Replace Faces with .obj?

I've been trying to export .obj Minecraft worlds with custom .json and .obj models for every block by editing jmc2obj code and it kinda worked. Then thought of doing something different but I don't ...
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25 views

Whats wrong with my rig

Im using Blenrig addon. I have align the bones in edit mode and wiht ctrl+P automatic weight parent. Download the Addon for Free Edit Mode Pose Mode Any suggestion or help how to fix it and rig a ...
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19 views

Is there a way to retrieve the colour at a point in an image using a Blender add-on?

Can you get the colour of a pixel at a certain point in an image in Blender using Python?
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22 views

Python Scripting: Creating a script that adds a particle system with your own custom settings?

Hi Blender Users/Python scripters! I am trying to create a script(Eventually it will be a button operator) that adds a particle system with specific preset settings. Is it possible to create a ...
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9 views

Why riggify not generate on target

I have match all the bones with the riggify addon. Clicking on the generate button the generated rig is not on the mesh target. How to generate the rig on the target. I have set the pivot point and ...
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1answer
231 views

Where is Blender version 2.79?

i tried finding Blender 2.79, but only found 2.79b in the official Blender website. Can somebody please help me?
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1answer
53 views

Why the addon installation succeeds but the API is not accessible through the bpy module?

I have compiled Blender 2.79b as a Python3 module on Ubuntu 16.04 LTS. I install an addon using bpy.ops.wm.addon_install(), enable it using ...
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58 views

The BOS FBX import / export addon for blender does not work

I was looking for a better FBX support for Blender and I found this FBX exporter,which uses the official Autodesk FBX SDK (2015) : http://www.gamefromscratch.com/post/2015/12/17/Better-FBX-Support-in-...
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29 views

How to use Modular Trees

I'm trying to make trees in blender using the GitHub Modular Trees addon but whenever I try it always gives me an error message. I also can't find any tutorials on how to use it and the directories ...
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1answer
18 views

Netrender addon missing

I am unable to find the netrender addon in Blender 2.79b on fully updated Ubuntu. My son is starting to work on more complex scenes and we have a couple systems laying around that can be dedicated to ...
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34 views

Path to add-on before it is installed?

When installing an add-on I would like to be able to extract the source path of the add-on with python, so I can use it as a default path in the ui to an included .exe file. How do I get the source ...
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1answer
14 views

Close A Wallsystem in archpack

I have a simple question about the archipack addon. I want to create a complex floor with several rooms etc. now I'm trying do draw the surrounding walls, but how can I close the wall system of the ...
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1answer
14 views

How to delete one side bones

With the Blenrig addon I dont want to keep the mirror or symmetry option both side. I delete the half side (hand) but it deleted the other side also. Is there any option to control just to delete the ...
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Archimesh is missing

I downloaded Blender from the official website 2 days ago to make a VR project and i saw someone on youtube using Archimsh add-on to build a room and objects. I pressed ctrl+alt+u and tried to find ...
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1answer
43 views

Are there any built-in color swatches or color palette?

Are there any add-ons (or any other way) to get color swatches? In Coreldraw, Illustrator or any vector software we have color swatches. Ready made color shades, no need of mixing. We can have a ...
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2answers
61 views

how can I export object position info from blender to text file?

how can I export objects position information from blender to a text file for every frame of an animation?
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1answer
55 views

Field property? what is that?

So in this video, he talks about making property some sort of "Field" for the new blender api https://youtu.be/Mjy-zGG3Wk4?t=108 but what is that field? I dont find reference on any web page. seems ...
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1answer
19 views

How to create toggle button use python in blender

I want to make a toggle button for my custom operator. It works similar to checkbox: once the button is clicked, the operator keeps running until the button gets another click, so will the button ...
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2answers
66 views

Is there any form of security on paid addons [closed]

I just bought an add-on and realised that it's literally a ZIP file with the source visible, just like a regular add-on. I have read the user-term agreement and the EULA, but is there anything ...
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1answer
30 views

COA - tool blender animation

have question regarding COA tool for animating sprites in blender,is it possible to animate mesh deformations,I see options for selecting meshes and moving them,but none for animation,right now I am ...
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1answer
31 views

Why i have 2 type of mesh with tissue addon

With the base mesh and tissue mesh 2 different mesh created. I have this setting for tissue addon Blend File This is the result The red and green mark are the mesh created by the addon. How the ...
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1answer
22 views

My Add-on Panel / Window / Tab is missing

My add-on UI (window/tab) is missing after I moved my Blender folder to other folder. I am using a Mac and Blender 2.79. I've tried to move the folder back and to reinstall Blender. The results are ...
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29 views

Is my add-on redundant?

I am currently working on an add-on that is supposed to assign bones to so called "BoneClusters" for easy management and replication (the name BoneGroups was allready taken...) Why would you need ...
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19 views

3D Connexion mouse not working in Blender

The 3D mouse works fine in SketchUp but not at all in Blender 2.79. I can't find a good reference to fix this. I need an exact and complete step by step approach because I feel like an idiot after ...
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20 views

Exporting to OSG format in Python script?

How can I export a 3D model to OSG format from a Python script? I have found this add-on, and when I hoover the mouse over the export alternative "OSG Model(.osgt)" in the Blender GUI, I get a popup ...
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10 views

Cell Fracture bugging out on smaller objects?

I am making an animation of a cube falling and breaking into pieces and I have shrunk it down to be less resource intensive on my computer as it is not the only part of my animation and I don't have a ...
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1answer
243 views

Where is the Node Editor in Blender 2.8?

I can't seem to find the place, in Blender 2.8, where node-based addons lived in previous versions of Blender, such as Animation Nodes and Sverchok. Does anyone one know where that editor went, if it'...
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Mac - undo not working? It is not shift alt problem

Im on a mac and this just happened today - cmd Z works in other programs so its just blender. I installed an add-on (speed retopo) that may have screwed with key settings, but I removed the add on/...
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Cell Fracture modifier breaking

When I apply cell fracture to an object with a texture that inst a solid color it doesn't work properly and wrecks my scene, I have tried different numbers for total cells and recursion and stuff but ...
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1answer
30 views

Why does Grease Pencil ui not inherit from bpy.types.Panel?

I am developing an addon and often right click on existing ui elements and select "Edit Source" to learn how certain ui elements were made. Almost every ui element inherits from bpy.types.Panel as ...