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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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Grouping bpy.props together, and/or using .name

You can check it out in the add-on HERE, but I've been working on a road generator add-on and have hit the point where I need help on some things. How do I group bpy.props together so I can iterate ...
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21 views

Where can I find or download ANT Landscape?

I'm using blender2.79 and I have looked for ANT Landscape for a long time (it doesn't exist in add-ons). I have also searched the question and I found the link: https://wiki.blender.org/wiki/...
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30 views

Why won’t my clouds from blender cloud generator work?

I’ve been trying to make lots of clouds with the explosion type of blender cloud generator, it appears in chunks when I render. Does anyone know what to do? Thanks. (Edit: I found out that it comes ...
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12 views

Trouble using Sprytile

After creating a flat 'landscape' surface using textures in Sprytile I find that, after selecting some of the surfaces and pushing and pulling them, when they move some are not connected to ...
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1answer
25 views

Long error message when try to extrude and input box is empty? (I can now no longer use blender)

I was making a house in blender using a tutorial. I have not messed with the settings I have only ever added some addons. Today when I went on blender and tried to extrude a circle it did not work and ...
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12 views

Why there is no effect on bake

With the help of TexTool addon. Im baking my simple mesh. I have created UV to the mesh and with the TexTool i click on the Tangent Normal and click bake. After the bake process is over there is only ...
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1answer
17 views

How to package my own CYCLES fork as an add-on for blender (as a .zip file)

I made a fork of the awesome CYCLES render engine. I wonder, can I package my fork as an add-on for blender? I know that there are many alternative render engines for blender (e.g. LuxCoreRender). ...
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14 views

Add-on issues in installation

im very new to blender and for some reason im having no success installing any add-on,i followed all of the steps yet when i pick the file to be installed nothing happens.In the image this is what it ...
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16 views

Cannot use tree addons on blender on mac

It has now been 3 hours that I'm searching and I cannot figure out why I get an error with the tree addons of blender :-( Someone can help please? Seems some people already had this problem and ...
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13 views

Exporting to .ac file using io_scene_ac3d folder files

I'm trying to modify a Blender file object (aircraft instrument) then export to an .ac file for use in Flightgear. Error script follows below. I've enabled the ac3d folder contents in separate ...
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1answer
20 views

Using PolyPen in Retopoflow 2.0 [closed]

I have watched tutorials and demos but I cannot get the hang of the PolyPen. I end up with 2 triangles instead of a quad! :-) There's got to be a little thought trick that would make the tool work for ...
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ui previews dynamic enum error

in the ui_previews_dynamic_enum.py from the templates script i have an error, the error happen when i load the path and remove the path and replace with the same path(the path that i previously ...
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40 views

A quick way to unwrap

I want to export my model with uv to import in Substance Painter. With the above image i have many mesh and each time i have to select each mesh go to edit mode and select unwrap. And if ...
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1answer
38 views

Get an executable list of executed operators in python

What is it for: I’m writing an addon for blender which will have to store operators that have been executed since a custom button has been pressed, until another button is pressed. What do I need: If ...
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1answer
24 views

PYTHONPATH extension?

I am trying to write some scripts to test blender. I have developed some helper tasks that I would like to use from a common module. However when I move the task from the working script into a ...
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12 views

Good practice to develop Blender Addon : Execute/Invoke command (INVOKE DEFAULT, FINISHED, etc.)

How can I use the "execution content" at the end of execute/invoke command (INVOKE_DEFAULT, FINISHED) ? (https://docs.blender.org/api/blender_python_api_2_63_17/bpy.ops.html#execution-context) Could ...
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Good practice to develop Blender Addon : delete objects and customized PropertyGroup

I need to generate a serie of scene based on some parameters that I saved on my computer (required: I cannot use .blend.. ) Thus I load thoses files, one by one, and between two loaded file, I need ...
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Good practice to develop Blender Addon : Objects and operations

I understand there is many kinds of "objects". The objects themselves such as cube, sphere, etc. (that are meshes), lights and camera, but also particle emitters, materials, node_tree, etc. The first ...
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1answer
20 views

Creating primitive changes selection

I am writing a blender addon that shows a panel with an enum property in the object properties. In some cases if the user changes the enum value, the addon needs to create a new object. I managed to ...
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21 views

Addons being rejected by blender

Good day. My blender version , 2.79 , is currently rejecting all my external add ons. This is the first time that this is happening. Any help will be greatly appreciated
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1answer
31 views

How to Download Blender Pose Library ? As well as like in Maya Studio Library (Facial Expression)

Just learning about posing characters and found I have a library (vers. 2.79) but see that it is empty. Is there a repository out there somewhere of free poses I can install in my Blender library?
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112 views

How do I create custom sub menus for MCprep Addon?

I'd like to do my own edit of an add-on so it covers everything I need, I need to create a new menu when doing Shift+A and a sub tab when selecting a mode like on the pictures below: You can ...
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25 views

TextureAtlas flips normals on half of the deep linked duplicates

I have a strange effect on my model. I modeled the Portal Companion Cube and since there's a lot of similar objects, I created deep linked duplicates of them to make easy adjustments to all of them. ...
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1answer
67 views

How can I make metal look decayed and rotted

I want to make a plane look like its been decaying with rust holes in the jungle for decades like this picture. I think I remember seeing an add-on that could do this, I could be wrong, but any help ...
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Can't get Perspective Transform addon working? (AmasawaTools 1.1.7)

What it is supposed to do: In all my fiddling around with it I can't get the effect to work at all. The addon installs just fine, I can set the Lattice to the camera and all the "functions" of the ...
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1answer
133 views

KeyError on ImagePreviewCollection

I want to refresh the Preview Collection everytime the user change the category, in order to do that, I set the generate_previews function to refresh it all the time, but it produce this error: It ...
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20 views

Import Node Into Custom Nodetree Python

I have created a custom nodetree with python and to save time I am attempting to import some existing nodes. Specifically the math node from the texture node tree "bpy.types.TextureNodeMath". I have ...
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19 views

Commands from serial port to blender controls

I'd like to make some extra keyboard on Arduino to send some commands to Blender. Some commands just duplicating existing shortcuts, some of them I need to start custom python scripts during ...
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1answer
35 views

Does having lots of add-ons enabled slow down blender? [closed]

Also, does it slow down the viewport? Thanks!
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21 views

how do I make such a menu for my addon?

Hey. how do I make such a menu for my addon?
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1answer
31 views

event “close program”

Main question: in my addon, i create a python-thread, for do not blocking UI. (1) its wrong?) thread created on checkbox-"on", and destroyed on "off". problem when checkbox is "on". when i close ...
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9 views

blender not responding after install appleseed engine and blenderseed add on

I HAD INSTALLED APPLESEED ENGINE and add a add-on blenderseed in blender BUT IT SHOW messages that show in image blender not responding and second one pls Look in the image.
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1answer
20 views

Make a Pie-Specials Menu, dependent on selection type

I want to do the following with Python: I have 3 different menus, and I want them to appear, dependent on the selection mode. So when I'm in faceselectmode, I want with the same button a different ...
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Is this bug with addon

I have downloaded the Smart Join addon Blender File I'm having problem with the add-on for this model. When I click on Separate S Join the model or mesh is deleted. When i click on expand smart join ...
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Make senings for IDE (or editor) for writing plugins. (Share bpy class)

I want to try to write a plugin. I have chose LightTable as the editor (but that's not the point, I think). How to make the editor "pick up" the classes I need for autocompletion (class bpy, etc.) It ...
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32 views

How do I make a button in the UI run my function?

I want to create a button in Blender to select a file for use elsewhere in my program. The command for selecting the file is: ...
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1answer
39 views

How to run some functions in an addon in blender start?

Is there anybody who know how can I run some functions in an addon in blender start?
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Stacking Piemenus

I want to create a pie-menu for basic actions in Blender. Now I hade an Idea which I thought would be rather pretty: Using two Piemenus. The First one contains grab, scale, rotate and some other nice ...
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Ivy Generator Add-on Horizontal grow

How to make ivy grow horizontally with Ivy Gen add-on?
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How to customize height of buildings with the OSM add-on?

I'm having problem regarding to the height of each of the building. I want to have different heights of the building like what is look like in that particular place. What should I do? I was thinking ...
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1answer
365 views

Addons Not showing up in Toolbar (Blender 2.8 Alpha)

After installing the addons in the user preferences, they don't show up anywhere in blender 2.8 except from workspace addons tab in the properties and clicking it doesnt do anything. In user ...
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1answer
35 views

How to make a Python operator as a Slider- Scripting an Addon

I am in the process of finishing an add-on I have been making and I am trying to work on some final tweaks. I am wondering how I can make a Python operator that is a Slider which controls the x, y, or ...
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24 views

importlib.reload: Trigger if Module Changed?

I'm using Blender 2.79 with Python 3.6 on Linux. I'm trying to learn about multi-file add-ons (and I'm new to Python). I find I can use importlib.reload() in the __init__.py and get a reload if the ...
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29 views

Molecular addon not working?

I am using molecular script ad-on but every time I try making molecular simulation the "Start simulation" button is unusable and says process... simulating.. left... I have tried different simulations ...
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1answer
41 views

How to extend an Operator

I tried to extend my own Operator but it doesn't work. What am I doing wrong? If I add this operator I get "Test" ...
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26 views

Is this Python3? MultiFile Add-On Tutorial

I'm using Blender 2.79 with Python 3.6 on Linux. I'm trying to learn to set up a multi-module add-on and this is my reference: Multi-file Add-on Tutorial Unfortunately I am finding in cases the "....
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18 views

Custom Module Class Used with Second Custom Module? Import?

I am using Blender 2.79 on Linux and I am new to Python (I'm a "C++ guy"). I've managed to create two add-ons, one is "StopWatch" (stopwatch.py), the other is "TimedEvent" (timeevent.py). I see ...
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18 views

How can I automatically tessellate a group of planes of various sizes?

I have a number of planes of various sizes: Is it possible in Blender to automatically tessellate them in a random fashion? Preferably by only altering their location and not their rotation:
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90 views

Text Animation json html export and editable, after effects bodymovin/lottie plugin blender equivalent

I came across this very interesting after effects plugin called bodymovin : https://aescripts.com/bodymovin/ and its mobile and web plugin called lottie : https://github.com/airbnb/lottie-android ...
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Grease pencil scatter objects - Not working?

I´ve seen a couple of tutorials about grouping objects and then using those objects with SHIFT+A Grease pencil scatter option on a plane on a scene. I´ve been working with it and cannot get results ...