Gaea is cool and everything, but what about fluvial erosion in #Blender with #GeometryNodes?
The concept rather simple:
- spawn points somewhere
- calculate a movement vector with ( N x (0,0,-1) ) x N, where N is the normal vector, sampled from the mesh surface (its a double cross product)
- update the points in a simulation zone
- accumulate the point proximity in a per-face attribute for the mesh. This requires a high res mesh
- optionally displace the mesh
I've got this asset library of custom string manipulation nodes for #blender 4.5 that I'm making available for everyone. You can download them from my open GitHub repository to your asset folder: https://johnnygizmo.github.io/extensions/
in/out/side/delete
Last night's stream ended up being a #b3d #geometrynodes rabbit hole, with this as a final result. Check it out if you wanna see how I got there: https://www.youtube.com/live/7FdfSKOkzXg
New video out today. This one is part 2 of my lamp rigging tutorial. In this one I build #geometrynodes based springs to place on the arms and then connect them to the rig to make them stretch perfectly.
I made this to test out a Geometry Nodes neon sign thing I made and now I kind of wish this neon sign existed IRL. 
loop_127 - Free Download: https://mantissa.xyz/vjloops
loop_124 - Free download: mantissa.xyz/vjloops
@villares Many #GeometryNodes tutorials in @blendernation .
Hey fedifriends, would you know any nice beginner friendly tutorials on #Blender #GeometryNodes to share?
We recently improved the spreadsheet in Blender in multiple ways:
* Context path moved to the side making space for menus.
* Columns can be resized/reordered.
* It remembers the order of columns.
* Supports horizontal scroll wheel.
The end result...
P250521
This week I wrote a couple of proposals for new Blender features. Feedback is welcome. See the thread below for individual links. #b3d #devfund
Also, the document on declarative systems in #GeometryNodes is available on the blog now: https://code.blender.org/2025/05/declarative-systems-in-geometry-nodes/
I posted a part 2 of my previous video on randomized item placement in Blender #geometrynodes, where I look at randomizing materials and also take a look at the upcoming CSV import node. #b3d
I made a thing that creates flow maps from curves, and then got a little carried away. #blender #geometrynodes
I did some more UV mapping experiments in #blender #geometrynodes tonight.
This one uses a UV mapping strategy inspired by triplanar mapping and granular synthesis. Each vertex maps its tangent plane to a random disc in UV space, and then the UVs and weights needed to make interpolation work are stored in the face corners. The material samples the same texture three times and applies the weights.
I had a fun idea to use #blender #geometrynodes to UV map meshes with other meshes instead of textures, and, uh, crimes may have happened.
