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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Cancel addon registering

I am developing an add-on, which only works if some specific conditions are satisfied (e.g. some other add-on is installed). Hence, I want the user to be unable to register this add-on if the ...
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How to dynamically load a .dat icon (toolshelf icon)?

Using documentation here 2.80/Python_API/UI_DESIGN, I've managed to create a custom .dat tool shelf icon for use with an operator in my addon. The icon will display from my addon when registered from ...
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Invoke the File Browser inside an Add-On but wait with the rest of the script until it's closed

I'm writing an Add-on in which I create a new Collection and then invoke the ImportHelper to load an FBX file. After that I would like to process the loaded data. My Problem is, that my script doesn't ...
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Why have I got an extra vertex when exporting to ply format?

The following is a very simple object in Blender (that I have cut out from a much larger object in order to highlight where the issue lies). It has nine vertices and four quad faces. There is vertex ...
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Change the export stl file code from Exported from Blender-x.x.x to object name

I want export model into stl format in ASCII, which Blender can do. However when I open the exported stl file by text, the first line is always like this: solid Exported from Blender-2.91.2 And the ...
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Joining instead of Cutting with BoolTool Ctrl Shift - Shortcut

I have been using Blender to edit STL files for resin 3d Printing. I have an object that I want to cut and I create the shape I want to cut out of it, but when I give the ⎈ Ctrl+⇧ Shift+ - command, ...
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BlenderGIS: importing georeferenced .tif DEM into Blender [closed]

I am new to Blender, and I am just trying to put a Structure from Motion produced DEM .tif into blender, but keep getting this error: struct.error: unpack requires a buffer of 4 bytes. What do I ...
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Add-on hierarchy

I am trying to create a family of add-ons, all of which use the same asset library. That means, all add-ons will use the same path to the asset library, and I want the user to specify that path only ...
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Cannot import nested Python module when writing an add-on

I am working on my first add-on, though I am pretty experienced with Python having written multiple apps using Django. My project structure looks like this: ...
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Smooth blend of shape keys

Well, this is my first time here, and I want to ask a question regarding shapekeys. I want to know if it exists an addon, script or another manual way to get a more smooth blend of multiple shapekeys ...
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1answer
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Blender API… “context is not defined”

Good morning, I am currently updating an older AddOn and it went very well so far, but now im stuck with an error and I can't find the reason since my knowledge in Python and especially in the Blender ...
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How do i start the rigid body dynamic in the keyframe i want? [duplicate]

I’ve been trying to animate a blowing skull, but, when i try to add the active rigid body dynamic, it stars from keyframe 1, when what i want is to start it in the keyframe 267.
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Simple Addon 50 lines - Crash blender - what I do bad?

I start to learn Python and Blender. But can't figure out what I do bad here. The code is : ...
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Call update function when initializing a custom property

I am writing an add-on with a panel UI, in which I want to have a drop-down list of all objects in a specified .blend file, so that my operator could append the selected object. I've managed to do ...
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error: return super().__getattribute__(attr) [closed]

I try to run the following script from the tutorial (https://youtu.be/bZUTiAJ1Tuc). While I try to execute a grid by clicking on a respective button panel I get the following error message "......
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Is there an addon that shows the NumPad on the screen when entering numbers like object size in Blender?

I want to show the NumPad on the screen like this image when I enter a number such as object size. (I made the NumPad in this image by myself using Python's Tkinter, but it doesn't work well yet due ...
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Add ons not installing/showing up in Blender 2.91.2

I'm using Blender 2.91.2 and I've been trying to install this add on that I bought. I tried to install it in User Preferences, but nothing ever shows up/reacts when I do. I've tried installing just ...
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Can we use blenrig 5 on blender 2.9x, or has it become obsolete?

I want to use blenrig for my character in blender 2.9x and upcoming versions, If blenrig is obsolete, then suggest me similar industry standard rigging add-on
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1answer
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How to force a redraw of a panel in the 3D_View

I have a panel in 3D_View that shows the current file and allows the selection of a new file. When the file is selected, the panel needs to redraw. How do I force a redraw? In Operator.py file ...
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How do I stop Flip-Fluids generating smoke/fog effect over the water?

I just recently got started with Flip-Fluids in blender and it was working fine for a bit, but then I found that there was a fog generated over the liquid. I am trying to generate a fog inside the ...
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1answer
23 views

Import Image as Plane Without Cropping

I'm using the Import Image as Plane add-on to import RGBA PNG-24's. My issue is that the add-on automatically crops the planes, which changes the images' location relative to the world origin. As you ...
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Per-Face Vertex Color from Image Texture

Is it possible to convert a UV mapped image texture into per-face vertex color? I found this script that can generate Per-face vertex color from Normals of 2.79, or an add-on Bake vertex color, but it ...
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No idea why the loop tool is not working here

No idea what's wrong here. It is just deforming in a strange way and I have no idea why.
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1answer
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Detect user event (bpy.types.Event) anywhere from blender?

In blender interface, when multiple objects are selected if we press "ALT" on the keyboard while changing a property, the behavior of the property execution change (in this case we can batch ...
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I have a problem with addon Spark AR Toolkit in Blender [closed]

I have a problem in Blender 2.9. WhenI click anywhere in the workspace and an error appears. ...
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How to find the UI code for a node/modifier

I want to be able to see the UI code for modifiers and nodes, which "edit source" doesn't work on. It instead gives the error "Active button is not from a script, cannot edit source&...
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1answer
43 views

Blender not importing openings from doors or windows from IFC file

I want to import an IFC file exported from REVIT, using the BlenderBIM add-on. Once in Blender, some openings (doors and windows) are not imported, and window and door families are imported embeded in ...
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Cell Fracture Add-On Automatically Decimates Base Mesh

Wondering if anyone here can offer some advice on the Cell Fracture add-on. I am trying to fracture some very high-poly triangulated 3D scans but it seems that the Cell Fracture add-on takes it upon ...
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Any plugin/tool to export Maya's .anim file?

I'm on the search for a plugin or a tool that can somehow convert animations i made in Blender to Maya's .anim file format. I tried many Google searches for a DAE/FBX/AnythingElse to .anim converter, ...
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How do I start building a geometry node from a py-script for Multilateration in blender (finding coordinates from distances)

I'am new in this channel and I hope my question is good placed here. After some searching for a CAD-problem which is fully expressed here: https://stackoverflow.com/questions/1406375/finding-...
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My script doesn't work like an add-on

I am writing a script for the Composition tab and it works when I run it in the Scripts tab, so I want it to be an add-on. I found the manual and added the lines that need to be added, then I ...
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Updating very old add ons for use in Blender 2.8-2.9 onwards

I have a question regarding a very old add on for Blender, that I am hoping to make work in the current version. Currently, I have gotten into to developing add ons for the Space Simulation software ...
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Update child coordinates relative to parent

I'm facing an apparently well known issue with Blender that was already described here. Basically, when I create a new object at world level and then make it the child of another object, its ...
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Updating an existing installed addon [duplicate]

so I've made made an addon for blender, tested it and installed it on the target computer. On the dev computer, the script still is just loaded into the scripting Worspace and executed. But now I've ...
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Blender fbx export (to UnrealEngine)

I made a simple animation trying to export it correctly to Unreal Engine. I'm using the Blender add-on SendtoUnreal but it's the same with a simple fbx export. I make a cube and an armature, parented ...
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How to reset EnumProperty value when the enumeration items are changed

I tried to make and display the EnumProperty whose items are object name existing in Blender. However, the value of EnumProperty ...
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1answer
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Toggle an operator

How do you toggle an operator? A prop works row.prop(bpy.context.object, 'lock_rotation', text = "", icon = "UNLOCKED", toggle = True) but ...
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1answer
32 views

Node group not found after script execution

I was trying to recreate script from video, but with my own node group and I ended up with an Error which is too hard for me to understand. Script did works and create node groupe, but for some reason ...
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Cell Fracture has weird effect on certain meshes

I'm trying to cell fracture a Suzanne head and when I run a simple cell fracture effect on it (picture below,) half the mesh works and half of it turns into weird blocks (second picture.) Also, if I ...
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'MC prep addon' copyright?

I wanna make Minecraft animations on blender using 'MC prep add on'. is there anything that I should keep in mind about the copyright, as using MC prep add on? is there anyone to know about this?
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How to permanently remove a default add-on

As you can see in the images, the addon has been removed from the folder. I didn't remove it, it was probably Blender, or the new PRO version of Archipack that I installed. No way for me to know. ...
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How to use select_circle in a modal operator to select faces in edit mode?

I'm trying to write a small tool where I can "paint" a face selection and at the same time expand this selection to its shell (essentially what select_linked() does. I have set this up as a ...
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How to add wav file to video sequecer in blender python

I have tried importing Audio with code like the following, referring to past questions and answers. ...
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Problem getting the Fiber Mesh addon to work

I am new to blender so please go easy on me if I'm being a bit stupid here. I am trying to apply the Fiber Mesh (bounce fiber) addon to a mesh in Blender. I have followed every step in a couple of ...
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Is there a way to optimize tool panel?

I have too many addons so there are many tabs in the tool section. I would like to organize those somehow
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1answer
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How do I install the add ons into blender?

I want to install add ons for importing .vrm files. I need to know how to get the add-on from my macbook's files into blender and install it correctly. When I bring up the file, it is not a zip file ...
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Side bar Tidy up

I have a load of addons active in my side bar and can't read the titles of them I am wondering if there is a way to to clean them up or make my own sidebar menu that can reduce the number of the tabs ...
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Create default scene with Screen cast keys addon enabled and the display turned on

I always want to enable the Screencast keys addon when using Blender. I'm trying to avoid having to remember to turn it on for each new Blender project. I tried turning the checkbox for it on in the N-...
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Batch Rename (add-on) - inverted sequential numbering

Official Blender 2.8+ includes add-on called Batch Rename, but I can't find an option to invert numbering order for a bunch of objects (Text.001, Text.002, ..., Text.010). Number 1 become 10, 2-9, 3-8,...
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How to make a text box active(Similar to rename by F2) in blender python?

I have a panel that pops up when a user presses some shortcut key and the panel has one text box(row.prop(....)).Now i want to make the text box active so that when the user presses the shortcut key ...

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