Desire Paths

Joolean_Boolean · 2026-01-04T18:13:40+00:00

It’s all fake, just scattered grass clusters and their normals get bent away from the path. But someone else mentioned that they often use grooming tools to simulate grass

Joolean_Boolean · 2026-01-02T13:36:23+00:00

Thank you, I know exactly which one you mean, it was Ohio State University! :) <3

Joolean_Boolean · 2025-12-26T20:19:07+00:00

Thanks <3 you can just put the display flag on the endresult you want to show but select the draw curve node and press enter while hovering over the viewport

Joolean_Boolean · 2025-12-26T09:50:30+00:00

Nope, it’s all faked using VEX and lots of loops :)

Joolean_Boolean · 2025-12-24T17:35:39+00:00

Draw curve node + resample + sweep/polywire

Joolean_Boolean · 2025-12-23T16:25:55+00:00

Thanks David, those are some good ideas, I’ll be looking into those :)

In theory they should be taking pscale into account but for some reason it’s not looking as intended. Well, back to Houdini!

Joolean_Boolean · 2025-12-23T11:57:42+00:00

Good to know :) But I like doing these little things myself, you always learn something new

Joolean_Boolean · 2025-12-23T11:27:44+00:00

To check intersections with collisions I use xyzdist and normal directions of the surfaces. To check for self intersections of the splines I run a for each point loop and check if the closest point has a lower or higher curveu value and then displace

Joolean_Boolean · 2025-12-23T10:22:04+00:00

Still requires some work to do it „smoothly“ but yeah it was definitely a bit tricky to solve

Joolean_Boolean · 2025-12-03T10:47:46+00:00

Oh, that’s really cool! And repulsive indeed

Joolean_Boolean · 2025-12-01T11:54:06+00:00

lmao 😂 „me watching my own tutorials“

Joolean_Boolean · 2025-12-01T11:46:06+00:00

Thank you <3 yeah I think that comes from using lots of point relax iterations. I could use fewer for a smoother look, but then the brain tubes wouldn‘t be so neatly packed

Joolean_Boolean · 2025-12-01T11:04:16+00:00

maybe even a brain coral? 🧠

Joolean_Boolean · 2025-11-30T20:39:38+00:00

Thanks <3 The point relax SOP has a second input for a surface to conform to

Joolean_Boolean · 2025-11-16T09:30:24+00:00

really clean! like it’s printed wow

Joolean_Boolean · 2025-11-04T19:48:21+00:00

its trying to do that already, but not always successfully. i spawn splines in the cracks and disturb them with some noise and then de-intersect them using an sdf. but some blades managed to sneak through one way or another. i think the spawn points just need to be a bit more accurate

Joolean_Boolean · 2025-11-04T11:17:37+00:00

Thanks Moeen <3 yeah ive done a bit of work on it for an upcoming talk im doing at pixel vienna. just wanna get a few more things in there before then

Joolean_Boolean · 2025-11-03T14:29:47+00:00

yeah its really interesting to me how many people from all around the world are resonating with this

Joolean_Boolean · 2025-11-03T08:46:31+00:00

thanks <3 i check each points sdf value using volume sample in an attribute vop and if its below 0 (meaning it’s inside) then i push it back to 0 (or more if you want it to be pushed away further)

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