New answers tagged scripting
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Exporting X & Y coordinates to file
You can get the location coordinates of an object called 'Cube' with the following code:
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-1
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How can I fully select a collection using python with blue highlight?
Each outliner area has individual selection (blue highlight).
But only one active collection as seen below (gray highlight on icon).
If you press F2 in any one ...
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1
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Unexpected result setting a shear matrix as transform
I guess I'm too late to the party but there is still a bit hacky way to do it - won't affect the actual geometry and will allow you to add ANY possible transform to your project, even a shear ...
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2
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Repeteadly calling one modifier upon other
bpy.ops.object.modifier_apply(modifier="modifier_name")
takes actual modifier name, which is unique for every modifier.
What you are passing is modifier ...
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0
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Python - How to scale vertices with pivot being set to cursor?
This is a year later but I wanted to propose a solution I came across online to this problem. Other solutions here have proposed math calculations to "get around" this issue, but there is ...
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Dynamically adding/deleting foldable panels
The problem is that you want to control multiple properties with a single variable, which is not possible. I think you need to read about bpy.props.CollectionProperty. It lets you create a dynamically-...
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Make an object turn / rotate with its front face to the next location in an animation
I don't want to create rotation keyframes manually nor set specific rotation at each location keyframe manually.
No problem.
Animate your cube's location as desired. Set extrapolation mode in graph ...
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Can the blender api be used to create alternate viewport control modes
I’ve derived a rudimentary way of acheiving the kind of controls i need, thank—in small part—to chat gpt and stack exchange. It turned out that using a modal operator was all it took to override the ...
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How to enable the move gizmo via script?
The actual solution for saving UI settings is to set them and save a startup file - File -> Defaults -> Save Startup File however if one wanted to run a startup script changing the UI, one could ...
- 22.1k
1
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Activate addon not working
It turns out the blender field should be included in the bl_info dictionary. Otherwise, Blender will just ignore the script.
the ...
2
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How can I assign material colors to a color attribute?
Here's an example script. I'll assume you use V3.6+
Create a new color attribute
Iterate over all materials and
fetch their color
Iterate over all polygons and fill out the
correct colors into the ...
- 28.7k
1
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EXCEPTION_ACCESS_VIOLATION when running python in background mode and calling region_3d.update()
As @Iván found out in a similar post, there is a bug report which states that this is not considered a bug, quote:
I don't consider this a bug. Calling an operator from background can be expected to ...
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3
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Why I need to run my script twice to get it to work?
The error does not pop up for the first time only, you can provoke it also when running the script multiple times. After running the script, move into the sphere (such that you are inside) and run the ...
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1
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Accepted
Get relative position to root
This:
obj.pose.bones['Bone'].head
gets bone position in object space (relative to object's root)
- 33.2k
3
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Accepted
Using python to set inputs on geometry nodes
I think you want to set values for modifier inputs and not the inputs of the node group.
(for tooltips like that enable Python Tooltips in the Preferences, Interface tab, Display panel)
So that would ...
- 22.1k
2
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Uv coordinates values seem to be placed on the wrong vertices
I have made the following experiment of changing the vertex indices of the plane, and you will notice that there is no obvious pattern to determine which vertex is used to map to which UV coordinate. ...
- 10.1k
-1
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Using python to set inputs on geometry nodes
nodeGroup.inputs[3] this will give you the Input object which has multiple properties. Try to print it to explore more. Or try it in blender python console.
What ...
- 865
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with bgl deprecated in b3.5+ how to compensate for loss of GL_POLYGON_OFFSET_FILL and bgl.glPolygonOffset
This can be achieved using a Geometry Shader.
I used the following references:
https://www.informit.com/articles/article.aspx?p=2120983&seqNum=2
https://github.com/nortikin/sverchok/pull/4983#...
- 39.3k
2
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How can I convert a complex point cloud to mesh?
Use geometry nodes, I know that blender 4.0 comes with a points to curves node, from there you can convert those points to mesh, alternatively you can convert the points to volume and convert to mesh ...
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0
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Mirroring/copying relative animations locations?
A solution I made with script, for easy access I recommend to set this up as an addon with shortcut/hotkeys
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How can I create a point cloud from the surfaces of a model?
You can also use this simple Geometry Nodes setup to create a Point Cloud:
You may not see any output, but when you apply the modifier, it shows as Point Cloud.
- 10.1k
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Scripting for loop adding attribute incorrectly
Thanks to @Ratt for the solution:
Adding the following line of code to the for loop solved the issue:
...
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0
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Rendering on GPU cluster
Blender can't saturate alone a beefy GPU, let alone 4.
Try using only one GPU at a time.
BTW I work with synthetic datasets (basically render as a map reduce process) and we use an approach kind of ...
0
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How to apply transformations to an object using the world matrix?
I hope it is not too late, but as far as I remember, matrix multiplication in python requires '@' instead of '*'. For me, this worked instantly
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Should I delete/comment all the asserts in my code when my addon is finished?
A different solution: turn it into a debug feature in your addon.
In my addon convertRotationMode, I started development using prints everywhere to monitor how things went, and even though it ...
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1
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Accepted
How to update the texture in the UI when using "template_preview"
I had this problem too, if you have found a proper way to update template_preview please share, meanwhile I have found a workaround that works for me. As you noticed when you manually resize the image ...
6
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Should I delete/comment all the asserts in my code when my addon is finished?
Assertions are a feature specifically designed to allow to easily disable the checks in the production code. You can do so by compiling your Python code to a .pyc ...
- 30.1k
0
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Mirroring/copying relative animations locations?
The easiest way to create an offset is to parent the object.
Add an empty to the scene and parent the left cube to that empty. Then assign the action to the left cube so that you can see where it ...
- 20.5k
1
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Activate addon not working
If you execute the code you provided from the text editor, you get the error:
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- 13.7k
1
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Accepted
How to make an int array/list property?
CollectionProperty is what you need. First define your integer property class like so:
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Block undo from changing UIList index
This is one of old core issues. You can't do much about it
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0
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the results of world_to_camera_view( ) are not correct
I found the solution. It's not because of world_to_camera_view(), or camera, or anything about the computation. I changed the mode to Edit Mode to pose the armature ...
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2
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How to replace all material nodetrees on selected objects for random colors?
Try this script for your first problem:
...
- 3,080
2
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Accepted
How to transform the mesh by points?
You can get get the 3 outermost vertices and get consistent ordering (to avoid matching clockwise with counter-clockwise) by sorting them by angle:
Sorting vertices counter-clockwise
The question is a ...
- 30.1k
-1
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How can I copy the location of multiple bones of a skeleton and paste them to another skeleton?
I think what you're looking for is called animation retargeting. and there are a few addons that do this inside of blender.
Rokoko (free)
https://support.rokoko.com/hc/en-us/articles/4410463492241-...
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Blender Python: How to test for "selectable" objects in viewport?
I've found a solution for my situation:
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Blender Python: How to test for "selectable" objects in viewport?
You can query the Object Types Visibility dialog, for example for the MESH type:
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4
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Blender Python: How to test for "selectable" objects in viewport?
You can use the property hide_select to set an object's selectability:
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- 10.1k
3
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Accepted
msgbus for collection selection in outliner
The msgbus is quite limited, I don't think there is a solution using that, but you can use the depsgraph_update_post application ...
- 10.1k
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