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I am working on a project to show a vein being compressed, pinching off blood flow, and then decompressing. I am using Ryo Mizuta's procedural blood vessel project (https://youtu.be/whh1QblAGEo?si=BNpwC0YXT7EZY-43).

enter image description here

As you see in the screenshot, I was able to get the compression on the vein to work correctly but I have no idea how to animate it so it decompresses and recompresses.

This is my first venture into GeoNodes so I have no background knowledge to know where to begin. I did try to use the "scene time" node along with "switch" nodes to try to simulate the animation but I didn't get anywhere.

Any input or suggestions would be greatly appreciated!

Thank you!

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    $\begingroup$ It might be helpful to people trying to help you if you uploaded an example blend file to the site blend-exchange.com and add that link in the question. $\endgroup$
    – Rick T
    Commented Feb 26 at 4:12

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You can add a Math Mix node after the Float curve output, expose its Factor input and keyframe it directly in the Geo Nodes modifier.

enter image description here

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