10
votes
Best way to get random spherical distribution using geometry nodes?
Discarding Approach
Spawn twice as many points as you need (I do an exact sphere radius vs cube radius ratio but you're not guaranteed to get enough points regardless how many spare points you ...
- 29.8k
7
votes
Accepted
How to transfer the scaling to instances?
The node Instance Scale (available from version 3.3) helps you with this.
You can solve this as follows:
To do this, you must first capture the scaling of the ...
- 32.7k
7
votes
Accepted
Copying position of points based on matching attributes
First of all, hopefully the devs will let us add this in soon 😉
👉 https://projects.blender.org/blender/blender/pulls/104621 .
Anyway, until then there are several ways you can do this, or at least ...
- 1,220
7
votes
Accepted
Geometry nodes, how to flat mesh islands on z axis
First, you need to mark the inner boundary. You're already doing it in your Select Inner Void zone:
It's a nice and clever solution (create two splines out of boundary edges, the longer one is outer),...
- 29.8k
6
votes
Accepted
How to display the length of the path traveled from point 1 to point 2?
You can capture the length of the spline with Sample Curve by passing the spline length provided by Spline Parameter as Value.
...
- 32.7k
6
votes
Is it possible to scatter points on the outside surface of a group of instances?
*This method needs manifold geometry (closed and with outward normals)*
With the Raycast node and a few chained raycasts, you can get a good result:
Red: Inside Points
Yellow: Unsure Points
Black: ...
- 4,718
6
votes
move the instance collection to the point of contact with the plane?
To do this, you would only have to send a raycast down to the plane.
Note that the center of the object is always the source of the raycast, so you have to compensate this additional distance with ...
- 32.7k
6
votes
Accepted
Is there a way of implementing an arithmetic progression with geometry nodes?
Well, I would say this is a useful solution:
The principle simply relies on Duplicate Elements and Accumulate Field.
First I ...
- 32.7k
6
votes
Accepted
Get information about spline cyclicity
Your problem seems to be an issue with Blender. It's not a bug in the sense that the node tree works like it's supposed to, however the pink Switch socket of the Switch node probably should have a ...
- 29.8k
6
votes
Accepted
Trimming start of the curve geometry nodes without altering tilt
I may be out of my depth here, but isn't it enough to recalculate the tilt from Minimum Twist to Z-up space?
- 29.8k
5
votes
Fill holes in a convex mesh using Geometry Nodes
I don't know if this question deserves this answer (maybe it should be marked as duplicate), but I'll post it anyway. Maybe another idea will come up that will solve the task better.
My idea would be ...
- 32.7k
5
votes
Model Reinforcing Bar with Geometry Nodes
It's a bit tricky and hard if not impossible when using the Cylinder node, especially adding of Loop Cuts or subdivisions on specific areas (which is not really supported in Geometry Nodes). But you ...
- 10k
5
votes
Is there a way of implementing an arithmetic progression with geometry nodes?
If I've read you right, to achieve the final effect, (if not the internal logic,) you could just implement some adjusted variation of this: using the sum of X and Y coordinates as a threshold:
If ...
- 72.8k
5
votes
Accepted
How can I rotate a mesh line?
The node Transform does not work with fields, but with single values. This issue is described here:
Why is there a red line when I try to connect one node to ...
- 32.7k
5
votes
Accepted
Can I add more than one instance to a plane using Geometry Nodes?
You have several possibilities to achieve this.
In all cases, however, it is important that you also give the node Distribute Points on Faces a mesh on whose faces ...
- 32.7k
5
votes
Best way to get random spherical distribution using geometry nodes?
In this particular case, you find that the Random Value node is not as random as its name suggests....
If you want to solve this mathematically, use the wonderful ...
- 32.7k
5
votes
Geometry nodes: How to make a curve meander like a river?
Did you know… 💡
A natural river goes in a straight line only for up to 3 times its width.
I tried to capture this logic, but failed to do so, apparently my river is too lazy at bending - of course ...
- 29.8k
4
votes
Is there a way to freeze/cache nodes so that it doesn't have to reprocess everything?
It is no longer true that Blender cannot cache the result of a node in Geometry Nodes.
From Blender 3.6 and onwards, Blender Foundation have added the Simulation Zone nodes to Blender, which can ...
- 41
4
votes
Accepted
Blender geometry nodes minimum bounding box or longest edge vector
TL;DR
The node Convex Hull creates the outer hull from a flat rectangular shape, which is also the object-aligned bounding box.
The following setup should get you ...
- 32.7k
4
votes
move the instance collection to the point of contact with the plane?
You can simulate¹ falling down² by raycasting down like in quellenform's answer, but then taking the lowest ray for each group (not island, because one Suzanne is 3 islands), and displacing by that ...
- 29.8k
4
votes
Accepted
Is it possible to scatter points on the outside surface of a group of instances?
You have a bunch of instances generated in a different modifier. These instances intersect each other. You would like to distribute some other instances on the surface of these objects, with a new ...
- 20.5k
4
votes
Is it possible to scatter points on the outside surface of a group of instances?
Well, this is how it could be done:
Just create a volume from the objects, without increasing the Band Width, and with a high Voxel Amount. Then convert the volume into a mesh. This will give you a ...
- 32.7k
4
votes
Is there a way of implementing an arithmetic progression with geometry nodes?
Starting point for node group:
I'm sure someone else can do a cleaner job of this but I thought I'd offer this starting point for now and hopefully update it tomorrow.
Using simulation node in node ...
- 2,016
4
votes
Grass wind bending with simulation nodes and maintaining length
A simulation zone is something you probably 'don't want' to use here. An advantage of a simulation, is that each step operates on the previous step, therefore allowing - literally and figuratively - ...
- 29.8k
4
votes
Model Reinforcing Bar with Geometry Nodes
This is how I would approach a minimal topology, though this setup still isn't finished, you might want to add the control for rib thickness for example, or you might want to add a falloff of the ribs ...
- 29.8k
4
votes
Accepted
Model Reinforcing Bar with Geometry Nodes
Previously I got a little bit too inspired by Harry's answer, so here's something that better resembles a reinforcement bar - but the topology here is just overlapping geometries, so you won't get any ...
- 29.8k
4
votes
Accepted
Distribute vertex points around a circle using Geometry Nodes
We need to prosecute the guy, who created the addon loading data into named attributes… It's useful, but it's also a noobtrap, leading inexperienced people into unnecessarily hard workflows. One ...
- 29.8k
4
votes
Accepted
Scene Time to Fraction Node
The Scene Time node outputs the seconds as a float value at the Seconds output.
The Math node with the setting Fraction returns ...
- 32.7k
4
votes
4
votes
Accepted
Avoid spawning points when inside bounding box of object(s)
you can try it e.g. with geometry proximity, which has some disadvantages, e.g. you need "enough" faces so that it works:
- 52.7k
Only top scored, non community-wiki answers of a minimum length are eligible