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Unanswered Questions

1,956 questions with no upvoted or accepted answers
49 votes
1 answer
3k views

Custom trackpad pan/zoom/rotate behavior add-on

I'm trying to write an addon to customize the trackpad panning, zoomimg, and rotating gestures, but can't find a way to read the actual trackpad parameters for position and so on. The properties in ...
10 votes
1 answer
739 views

How can I get a list of currently running modal operators?

Here I found a working solution using ctypes which allows to find out if any modal operator is currently running. I am not good in C and don't understand how it works. But I'm sure someone does, so is ...
9 votes
0 answers
250 views

Play/animate images, spritesheets or video files in 'template_icon_view'

I want to "play" some animation in this UI space, the template_icon_view: I can load all the images I want, for example: I know that the gif format is ...
8 votes
0 answers
367 views

Blender on Windows is skipping python script. (brenda on windows)

We've been using Brenda for quite some time now for rendering architectural stills. Since our editing stations are doing nothing at night, I started making a desktop app that allows you to pick jobs ...
7 votes
1 answer
277 views

How to display an image in my custom node

I have a custom node and I want it to be able to display an image. I know that the node has a parameter show_preview and if you enable it, no image appears.
7 votes
0 answers
645 views

Update function for NodeSocket?

How do I set a callback for socket input change (value or link change) when having a custom node? I have a socket defined like: ...
6 votes
0 answers
475 views

How do I change the width of the Adjust Last Operation panel?

I've done this simple operator taken from templates. How can I change the width of the Adjust Last Operation panel? I tried scale_x and ...
6 votes
0 answers
523 views

Can I measure the UI font size with Python in order split text into multiple lines?

Is there any way to get the size of UI text, such as when using layout.label(text="message")? I'm trying to create a simple message box popup that displays ...
6 votes
0 answers
1k views

Can Blender automatically reload external script files when they are changed?

I came across this question: Is it possible to run a script from an external editor without reloading the file? Which also was asked over here in a similair format: Workflow for developing add-on/...
6 votes
0 answers
3k views

How to change animated object's origin without ruining animation?

For example: I have a character and a spoon which he is holding and moving thanks to child of constrain. My character releases the spoon a little bit above a plate. So I came up with idea to use rigid ...
6 votes
1 answer
2k views

How to update compositing nodes via script?

I create some nodes in compositing via python script: ...
6 votes
0 answers
740 views

Add custom textures and vertex attributes

I'm a new user of Blender, but I have 10 years experience of 3d development (mainly C++/OpenGL, but I know Python pretty well). Now I plan to use Blender as a replacement tool for the "good old ones ...
6 votes
0 answers
689 views

Hide filter options in UIList

I want the UIList to not show the filter options (inkl. the plus button). I've use following flag: self.use_filter_show = False The flag disables the filters ...
5 votes
0 answers
136 views

The documentation says frame_change_pre is NOT the ‘before the frame changes’ event. What exactly is it then?

I would have imagined that frame_change_pre is the event that happens, well, before the frame changes. Silly me! The documentation states (emphasis mine): Called ...
5 votes
1 answer
231 views

Finding which addon an operator belongs to

A recent question / answer involves what looks like an overridden operator: bpy.ops.object.align() Differing from the documented default, how do we find which ...

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