Blender Python Tutorial: How to Use Geometry Nodes to Split and Animate Mesh Faces

This is the second video in a step-by-step Blender Python tutorial series, where you'll discover how to use geometry nodes and Python scripting to create a basic mesh animation. Learn how to separate mesh faces into groups with the Separate Geo Node, seamlessly animate their scale with the Scale Elements Geo Node, and join everything together with the Join Geo Node.

Initial Code

Final Code

Geo Nodes Python documentation

Function Node Python documentation

#blender #python #scripting #tutorial #geometrynodes

[hanumanatee]

It's great how you give enough info up-front and as you're going along to let us pause the video and see if we can guess how to do the next step, and get a little serotonin rush when we get it right. Very generous teaching style, and I appreciate your not-shouting delivery.

[powersprouter]

Hi VIctor - My appreciation and enjoyment of all your tutorials continues! Haven't finished them all but getting there. One subject has me currently stumped: I'm trying to get greater control of the timeline playhead - I want to be able to start and stop it on various events and all I can find online in the blender API docs and on bulletin boards etc. is advice to use handlers and callbacks. I am having little success with this so far (and fwiw I have tried using chatGPT many times and it keeps getting it wrong too!). Is this is something that would be of interest to you and your audience too? Did I miss a video in which you already covered it? Of course you are very busy and have a long list of topics to cover already - Thank you for considering.

[JayeshSarvaiya]

Hi, I have been following your tutorials from long, they are great. I wanted to understand...
1. Which is more easy or beneficial creating things directly with Geometry nodes? or using Python scripts to make geometry nodes?
2. Can we create every geometry node with Python? or are there limitations? It yes, then isn't it better to create Geometry nodes directly? as they as visual way of programming? Rather that coding them in Python and then using them? I really wanted to understand if Python based Geometry nodes helps something extra... I tried to search answers on internet but in vein.
Thank you.

[luxor]

Hi Victor, I have some questions:
1. How do I create a Group (Ctrl + G ) in a Geometry Node network?
2. Is there's a way to create a Group then add existing nodes into it ?
Thank you.

[brunodemasi]

What is the advantage of using a visual script over a pure script? You don't risk creating something very complex

[YONS]

It would be interesting if you do scripting boxcutter addon tutorial