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Questions tagged [geometry-nodes]

Use this tag for questions regarding Geometry Nodes, a modifier added to Blender in version 2.92 to manipulate geometry in a Blender scene.

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31 votes
1 answer
14k views

Can't find the node! Which node is available in which Blender version?

It's not hard to lose track of all the Geometry Nodes in Blender, especially since names and function have changed over time. ...But honestly, it's getting pretty tedious. Many tutorials talk about ...
quellenform's user avatar
  • 37.8k
19 votes
1 answer
2k views

How can I instantiate a procedural node group with different parameters?

Suppose I have a beautiful node group that procedurally generates a plant (or building or whatever) for me: PS: This plant is available here: Staggered palm frond leaves with Geometry Nodes? Now I ...
quellenform's user avatar
  • 37.8k
20 votes
1 answer
5k views

Why is there a red line when I try to connect one node to another?

I'm trying to connect one node to another here, and I get a red line: I just can't figure out why and what this is. What I have tried so far to solve the problem: I made myself a cup of coffee I ...
quellenform's user avatar
  • 37.8k
25 votes
2 answers
20k views

how to bend geometry with geometry nodes

I want to create array on curve with geometry nodes, but I am unable to merge the instances so I get a continuous mesh, like a rail. I tried to use the weld modifier but it does not work with geometry ...
Goran Alexandru's user avatar
24 votes
6 answers
7k views

How can I re-sort the points/indexes of an object in geometry nodes?

I wonder if there is a possibility to re-sort the indexes of a mesh according to a certain criterion? Again and again in Geometry Nodes unfavorable situations arise where the point distribution or ...
quellenform's user avatar
  • 37.8k
11 votes
2 answers
6k views

Curve to Mesh with UVs in Blender 3.x?

How can I use geometry nodes to turn curves into a mesh and create UVs at the same time? When I use the Curve to Mesh node with a base curve and a profile curve, no ...
quellenform's user avatar
  • 37.8k
6 votes
1 answer
1k views

Passing GeoNodes attribute to Shader frame offset

I am trying to pass a geometry nodes output attribute (an integer) to the shader editor to control the offset of an image sequence. I have succesfully done this to pass the attribute and change , ie: ...
Fernando Sanchez's user avatar
25 votes
1 answer
46k views

Where is Transfer attribute in 3.4?

Where is Transfer attribute node in 3.4? I don't find it in the list of nodes:
Crantisz's user avatar
  • 36k
10 votes
1 answer
5k views

Assign vertex group in Geometry Nodes (v3.3)

This is my Geometry Node Setup. (EDIT: Here's a .blend file showing my nodes, modifier, vertex group, etc.) I create a grid, rotate it vertically, and then select out the topmost vertexes to assign to ...
Emily's user avatar
  • 361
11 votes
1 answer
3k views

Uneven Profile Curve Thickness with Geometry Nodes Curve to Mesh?

I've been trying to build a Geometry Node group that in part is able to create a mesh of even thickness around a three-dimensional curve that features sharp corners. After much research I'm aware that ...
Takanu's user avatar
  • 197
14 votes
3 answers
6k views

Modify instance geometry based on the location of the instance

I'm trying to use an attribute generated from an instance position to affect the geometry of the instances. For example with the below setup, let's say I want to shift just the 4 top vertices of each ...
Perpetual Color's user avatar
4 votes
2 answers
2k views

Geometry Nodes: What Does Capture Attribute Add to Geometry?

In the depicted geometry nodes setup, capture attribute is used with the "position" field added as input, in two nodes. I expect that this gives no new information to the geometry that is ...
libcrypt's user avatar
10 votes
1 answer
2k views

How to correct curve tilt, tangents and normals of a curve?

If you separate the faces of a mesh with Split Edges and convert them to curves with Mesh to Curve, these curves are twisted in ...
quellenform's user avatar
  • 37.8k
5 votes
2 answers
3k views

Combine two position nodes from different mesh primitives inside a geometry node tree

I'm trying to understand how to use two positions nodes relative to two different meshes. In the following example, I thought that the grid would be translated relative to the coordinates of the one ...
cjorssen's user avatar
  • 630
8 votes
4 answers
3k views

Rounded cap on Curve with Geo Nodes

It seems so simple but I just can't seem to make this happen with Geo nodes. Can anyone just create a curve, attach geo nodes to it, add depth, create rounded caps, and then add a simple controller ...
MASTER_2E's user avatar
  • 541
1 vote
2 answers
2k views

How to instantiate objects on individual/selected points in geometry nodes?

Let's say I have a simple Mesh Line and use the Instance on Points node to make an instance of a given object on every point of the line. How can I decide for each individual point if it should have ...
KevinR's user avatar
  • 13
13 votes
3 answers
5k views

How to position random instances one after another with Instance on Points based on the dimensions of the previous Instance WITHOUT OVERLAP? (Fence)

Objective I want to create a procedural fence with Geometry Nodes, where the fence may have random plank types. The planks must be positioned one after another, without overlap, right after the ...
AlfredBaudisch's user avatar
9 votes
2 answers
9k views

Geometry Nodes: How to use the Random Value node? (Output is red) [duplicate]

I've created a Group node that acts as a geometry switch. Plug in a few different geometries, and the integer you give it determines which geometry actually comes out. It works fine with a Value input,...
Mentalist's user avatar
  • 19.3k
8 votes
5 answers
6k views

How to apply Geometry Nodes with UV maps?

I am trying to scatter a textured object with Geometry Nodes. After applying Geometry Nodes, my objects lose the texture coordinates. Is there any way to get UV maps on these scattered objects?
barberik's user avatar
  • 139
7 votes
2 answers
5k views

Geometry Nodes instantiate mesh primitives at points

I'm trying to instantiate line meshes with a random number of segments at the vertices of a mesh. Blender 2.93 has shiny new mesh primitive nodes to instantiate meshes in your geometry nodes network. ...
null's user avatar
  • 828
6 votes
1 answer
2k views

How to create a simulation in Geometry Nodes pre 3.6?

UPDATE: Simulation nodes are now available in B3.6β! In the recent week the Blender community became crazy on the particular geonodes hack, that allows you to create a simulation in Geometry Nodes ...
Markus von Broady's user avatar
5 votes
2 answers
3k views

Apply a copy of an object to each disconnected curve using the curve modifier

The curve modifier allows you to specify a curve object for a given mesh with the modifier applied. However, when the curve object itself has multiple disconnected curves, the modifier seems to pick ...
waylonion's user avatar
  • 439
8 votes
1 answer
4k views

find out if vertices are inside or outside of another mesh, using geometry nodes

How do you tell if verts are inside of another mesh using geometry node and store them as boolean attribute? I tried the attribute Proximity node but it returns absolute distance to object so couldn't ...
nena's user avatar
  • 227
7 votes
2 answers
3k views

Geometry Nodes - Billboards (similar to track to constraint)

I'm trying to make flat planes that face the camera (billboards) using geometry nodes. It's pretty easy to do with particles, you just add a track to contraint pointing at the camera. I started with ...
stackers's user avatar
  • 229
6 votes
1 answer
2k views

Set group input to attribute in geometry nodes python without ops

I'm creating a script for data visualization and I want my data thats been loaded into an attribute to be selected for an input. I like to write my blender code without using ops and context where ...
TheJeran's user avatar
  • 2,668
6 votes
4 answers
9k views

How can I rotate these instances along a curve in geometry nodes

I am trying to make a procedural bridge, is their a way that I can rotate these planks along the curve.
Sooroojdeen's user avatar
4 votes
1 answer
517 views

How to string objects of a collection along an axis depending on their size, applying random rotation and scaling without overlapping?

Sorry for the long title, but I had to elaborate somehow, because the question is now a bit broader. Basically, it's about instantiating objects of a collection along a line. This question has also ...
quellenform's user avatar
  • 37.8k
4 votes
3 answers
564 views

How can I plot this Cartesian Equation in Geometry Nodes?

Can someone show me a picture of the nodes for the following equation? $$ \left(x - x\left(\frac{z}a\right)\right)^2 + \left(y - y\left(\frac{z}a\right)\right)^2 = r^2 $$
Renato Rubens's user avatar
3 votes
1 answer
4k views

How to assign a different material color to each geometry nodes instance

I need to be able to some how color each instance in a geometry nodes tree a different color. Each instance in the geometry nodes network is loose geometry. If I apply the geometry nodes modifier and ...
Anson Savage's user avatar
  • 3,412
3 votes
1 answer
1k views

Raycast + Align Euler to Vector. Wrong Hit Normals

I try user Raycast with "Align Euler to Vector" node. Target is simple rotate plane (4 vertex). As a result, some triangles are rotated incorrectly. What's wrong ?
John Ch's user avatar
  • 31
16 votes
6 answers
4k views

How can I create a hexagonal structure with Geometry Nodes?

I am looking for the simplest possible solution to create a hexagonal structure like this with Geometry Nodes: Which solutions are there? Bonus Tasks: Additionally I want the hexagons to have ...
quellenform's user avatar
  • 37.8k
12 votes
2 answers
2k views

How do I create a 3D parametric surface using Geometry nodes?

This question asked how to plot the graph of 2D parametric equations using Geometry Nodes. But how about parametric surfaces generated by parametric equations of the form $$ x = f(u, v)$$ $$ y = g(u, ...
Marty Fouts's user avatar
  • 33.3k
6 votes
3 answers
4k views

Selectively join points using geometry nodes

I'm trying to connect a set of points to their nearest neighbour. Steps I took: Instance some points on a grid Add a curve at each point and realize so I can affect them individually Move the ...
Ben's user avatar
  • 163
4 votes
1 answer
1k views

New Hair Curves: Getting color from emitter object?

In short: I need a method to get the new hair curves system to get the color from the emitter mesh, just like a regular hair particle system works. With a particle system, you can easily just set the ...
SleepyEngi's user avatar
4 votes
2 answers
2k views

Understanding how "vertex of corner" works in geometry node

I've this test case which starts from a simple mesh made of two connected faces, captures the face indices then instanciate and realize a grid on each initial mesh face centers. After that I'm ...
lemon's user avatar
  • 60.5k
3 votes
4 answers
2k views

Procedural Border Detection on a Flat Object

My aim is to create a border around a dynamically changing flat surface. AO and Pointiness don't work obviously. The image below is from here which illustrates my goal somewhat. I would like to have ...
Alan's user avatar
  • 147
0 votes
1 answer
1k views

Passing Data Into Simulation Zone

I am following this tutorial on the new simulation nodes: https://www.youtube.com/watch?v=RJbLiFTNHnI. At around the 12 minute mark, I have some confusion. In particular, as to why some data passed ...
d401tq's user avatar
  • 139
26 votes
2 answers
18k views

Control Instance Color with Geometry Nodes

I'm excitedly playing with the new Geometry Nodes system, but I've run into a limitation. I would like to control the color of object instances created with the ...
peacememories's user avatar
16 votes
6 answers
3k views

How can I better structure my node tree and make it easier for others to understand?

I built a Node with a Geometry Nodes node tree, but now I only see knots instead of nodes, which drives me nuts, and don't know how to make it look great again. As you can see, I have what I think is ...
quellenform's user avatar
  • 37.8k
12 votes
1 answer
14k views

Geometry Nodes - Image texture mapping. How to?

How to manipulate an image texture mapping in geometry nodes? For example to use "generated" or "object" mapping, like in shader editor, also how to scale a texture
Bicukow's user avatar
  • 963
12 votes
1 answer
812 views

Is where a way to pass data to material without realizing instances?

So, I have set up like this (3.1): I generate some color (random is just for example) and send it to output to use it in the material. But the only way to make this work is to use realize instances ...
Crantisz's user avatar
  • 36k
7 votes
2 answers
3k views

How to Randomly Delay Animation for Geometry Node Instances?

Is there a way how to randomly delay an animation? i mean i don't want a set of different instances to animate at the same time from 0% to 100% final animation state. So i want to introduce a random ...
Harry McKenzie's user avatar
6 votes
1 answer
752 views

Set exponential spline resolution (or one based on float curve) in geometry nodes?

I’d like to set a curve's spline resolution nonlinearly, ideally with a Float Curve so I can have fine control over the delineations of this Curve to Mesh. This is because I want the profile curves ...
Aubrie's user avatar
  • 707
6 votes
3 answers
1k views

Cycling /looping through a set of index values using geometry nodes to create animation

Cycling / looping through a set of index values using geometry nodes to create animation. Since they are still working on adding loops in geometry nodes how would I cycle through a set of indexes to ...
Rick T's user avatar
  • 4,543
5 votes
2 answers
2k views

How to add a unit in the input field of a node group (also Geometry Nodes modifier)?

Some nodes like Vector Rotate or Mapping have scalar and vector fields with $°$ symbol or $m$ or yet another unit in them: This also affects how the value is stored in memory – without the $°$ symbol ...
Vic Marco's user avatar
  • 301
3 votes
1 answer
125 views

How could a loft object be closed?

In this answer you can use two or more curves to generate a loft mesh with geometry nodes, but answers in this thread work for an open surface. What could be a good approach to close the loop?
vklidu's user avatar
  • 36.9k
2 votes
2 answers
5k views

How to subdivide a selection of faces in geometry nodes

In Geometry nodes I am trying to make a selection of where I want the subdivision to be applied, the only way I have been able to do this so far has resulted in the subdivided section being ...
Cinema Wire's user avatar
0 votes
2 answers
626 views

duplicating buildings using geometry nodes [duplicate]

For the purpose of creating a city scape randomly, I have been trying to randomly scale procedural building instances on a grid using geo nodes. The problem is that if you are instancing the same ...
common_goldfish's user avatar
0 votes
2 answers
424 views

Control over attributes of individual objects of a collection info node (part 2)

I have tried to implement the advice from a previous question, combined with controling the density of each instance on points. However, I still can't quite figure it out. I have done the following: ...
EwSa's user avatar
  • 575
14 votes
3 answers
13k views

How can I get a new random seed for every object using the same geometry nodes?

I'm making a small medieval city using geometry nodes in Blender 2.93, where each building is a separated object, but they all share the same modifier list (and the same geometry nodes). I added some ...
Dalibor-P's user avatar
  • 1,064

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