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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Transfer Attributes from One Geo-Node to Another

TL;DR How do I transfer attributes from one geo node on one Object to another geo node on another Object? Hey guys, trying to ...
Spring E. Thing's user avatar
1 vote
1 answer
80 views

How to output random integer for duplicated node group

How to create a node group that outputs a random integer every time it's duplicated (without it needing you to put any different input value to it). Is that even possible? That is okay if some other ...
Manu Järvinen's user avatar
2 votes
1 answer
36 views

How to control the scaling with the Color Ramp node so that the scaling is smooth?

I need to control the scaling of the mesh with a color ramp so that the effect is smooth like the mesh on the right. I tried different combinations of the nodes in the picture, but nothing worked for ...
arachnoden's user avatar
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2 answers
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Getting individual Proximity to Collection Objects

I want to create a simple 'falloff' effect for when a specific objects gets closed to each of the objects found in a collection. I was able to get the visual effect I wanted, however, I am unable to ...
Neuffexx's user avatar
4 votes
2 answers
172 views

align instance average between 2 faces

I need to rotate the object around its center to align to the average between the 2 faces on either side. I found this answer which is absolutely what I want to do but to no avail. Really I need is a ...
Darrenjack's user avatar
1 vote
2 answers
69 views

Dynamic Intersection-Extrusion

Simply put, I am new to Geo-Nodes and wanted to try and create a grid like floor that has its Top facing faces Extruded/Moved upwards based on an intersecting second object. The height/position of the ...
Neuffexx's user avatar
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1 answer
70 views

Geo nodes: Geometry transform on collision with another object

I'm trying to apply a transform to the geometry of an object when it collides with one another. Collision detection is made using Raycast. As you can see on the screenshot, there is a connection error ...
Alio's user avatar
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3 votes
1 answer
151 views

Scale instance to exact curve length

I have geometry with multiple curve elements. I need to scale the instance to the length of the curve that it sits on. Each curve is not all equal in length so the instance scaling has to work ...
Darrenjack's user avatar
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Make changes on the selected curve spline (Edit mode) using geometry nodes

I have this curve that contain many splines. What I want to do is: Select the curve -> Edit mode -> select one or more splines --> delete it using geometry nodes. Do geometry nodes can detect ...
Sicarius1's user avatar
3 votes
1 answer
75 views

Intersection of two mesh profiles in geometry nodes

I'm struggeling to get a (clean) intersection of the following profiles. It has to be this kind of arc stripe intersected with a rectangle. I tried these nodes Even though the shape looks like it ...
Westranger's user avatar
0 votes
1 answer
108 views

Geometry Nodes - Node Tree Ignores Its Own Output If Repeated?

Don't know a ton about geo nodes so this may end up being a dumb question but here goes: I've got a situation here where a geo node node tree I've assembled, when used in a modifier stack, will only ...
Spring E. Thing's user avatar
2 votes
2 answers
54 views

Geometric nodes - How to set/offset position of a specific edge's vertices

How can I set/offset position of vertices of specific edge? In the follow example given a plane with 9 faces. When setting a value in the node "Integer: Index of edge", the two vertices ...
audi02's user avatar
  • 251
1 vote
1 answer
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Curve to Mesh vs Instance on Points

I want to make a lathe node that takes a curve and rotates it around the z-axis using either Curve to Mesh or Instance on Points. The attached node graph does mostly what I want but I have to fiddle ...
lwiseman's user avatar
  • 113
2 votes
1 answer
85 views

Is there a method to shift vertices along an edge loop while maintaining their spacing?

In my scenario, I have a horizonal edge loop with equally spaced vertices along it. I am seeking a way to shift the vertices around the loop path where they maintain their spacing. In this cube ...
SebaYoung's user avatar
0 votes
0 answers
5 views

scaling fcurve and feeding it to strength of wind force field

Im trying to make wind force field to push on some falling particles to the beat of music. I can bake the music in a f curve and adjust the forcefield that way. But I'd like to scale the f curve ...
Tommie Jones's user avatar
2 votes
1 answer
27 views

When creating a mesh with Curve to Mesh node. I can't assign vertex groups to it the same way I can assign on regular mesh

I found this reproduce-able in blender 3.5 and 4.0.2 For a project I'm working on I need to be able to programmatically assign a vertex group which can be used in later modifiers to geometry I'm ...
Kari Neko's user avatar
0 votes
2 answers
87 views

Blending in or Fading-out /Falloff of Geometry nodes Displacement Modifier

I define a region of a mesh via a vertex group, to which I add a displacement set-position node with a Voronoi texture. As can be seen, the displacement takes effect immediately, meaning at the first ...
chubaka's user avatar
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3 votes
1 answer
86 views

Deleting realized instances with empty (in geometry nodes)

I want to delete instances that are in contact with the empty object. I've created the setup like below, but the biggest problem is that it only works for one object in contact at a time. Any ideas on ...
mrmrr's user avatar
  • 33
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0 answers
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How do I transfer a named attribute from one point to another by index lookup?

I'm trying to re-implement a space colonization approach in Geometry nodes, and I'm having a ton of trouble trying to get the data flow working correctly. I've scattered "food" points, and &...
user2224491's user avatar
0 votes
2 answers
64 views

How to move a cube with Set Position node in Geometry Nodes?

I am learning knowledge of "Field" in Geometry Node. Now I try to move a cube from (0, 0, 0) to (2, 2, 2) by field type node. Add cube at (0, 0, 0) Add "position" node to get XYZ ...
Kaneabell's user avatar
5 votes
2 answers
123 views

How to create a camera-space 2D bounding box in Geometry Nodes?

I've been trying to create a 2D bounding box. On this website I've found multiple threads about how to do this with code, but not how to do this with Geometry Nodes. Here's an example of what I ...
Brockoli Bruce's user avatar
1 vote
2 answers
35 views

Match rotation of instances

I'm quite new to blender and i've been trying to recreate this DNA using only geometry nodes: The problem is that i still didn't figure out how to make the straight forms in the middle match the ...
Luan Pinheiro's user avatar
3 votes
1 answer
159 views

Geometry nodes, how to select the top edges of faces

how to select the top edges of faces, using Geometry nodes? I tried using this post, but I couldn't get result. Delete edges on the top of geometry in geometry nodes
Pooya heydari's user avatar
1 vote
1 answer
45 views

How to instance objects on surface, aligned with UV direction?

So I have simplified my task to this setup: I want this compass needles to follow the UV, so that from one side of this C-shaped mesh needles will face red upwards, and on other side - blue will face ...
Crantisz's user avatar
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1 vote
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Geometry nodes Directional Map from curves

I'm trying to make a directional map out of curves based on their direction. I thought of using the curve tangent node, but the result is not quite the same and the baked result doesn't work as ...
Alex's user avatar
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1 vote
1 answer
47 views

Problems with multiple calls of Geometry Nodes from a Python script?

Each one of the following scripts (which provide different collections as input for the Geometry-Node) work as expected on their own and output different values: Script 1 (Isometric Reference ...
Andy's user avatar
  • 191
2 votes
0 answers
32 views

Calculate the angle between edges/straight curve segments joined at a point with geometry nodes

I've been struggling with below for a while and hoping someone can shed some light on it. I have a collection of edges (originally from curves, they are straight and have no mesh face) and I want to ...
Jangala's user avatar
  • 21
0 votes
1 answer
41 views

How I can get the actual final location of an object inside a geometry node?

I have the following geometry node that sets the material to red if the geometry is in the negative axis and blue if positive Now I have a different geometry node that simply displays the geometry of ...
ellipticaldoor's user avatar
2 votes
2 answers
174 views

How I can remove the right half of a geometry using a geometry node?

I have the following geometry, and I only need the left half To remove the right part I'm trying to use the Mesh Boolean node with a bounding box scaled by half to ...
ellipticaldoor's user avatar
1 vote
1 answer
43 views

Does anyone know how to create this special shape with the use of geo nodes?

I want to create something that looks like stairs or something simliar. It is important that the shape has a perfect transition in the topview but has offsets in the heigts so if something drops it ...
falk's user avatar
  • 127
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18 views

Is there a way to use a cloth modifier on top of a geo nodes animation?

I made this looping flower animation (nodes below) and want to apply a cloth modifier to it, but all while maintaining the geonodes driven animation. Is there a way to do this?
enats's user avatar
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0 answers
17 views

Geometry Nodes: can I animate (trim) a curve in real time at the moment I'm drawing it?

in the asset from Blender Studio, 2D Smoke Simulation Setup smoke is animated in real time each time a new spline in drawn. How could I reproduce that ? I would like to animate a spline (trim) each ...
gordie's user avatar
  • 2,480
2 votes
1 answer
31 views

Geometry nodes, how to create dimension for every edge separately

I'd like to create dimension per edge. I think it's possible by repeat zone. (edges count is not fixed) any ideas? desired result:
Pooya heydari's user avatar
0 votes
1 answer
67 views

Distributing Objects on a Plane with Defined Probability and individual translation/rotation/scale in Blender

I am looking for a solution to distribute my objects from a collection on a plane with defined occurrence probabilities. However, I would like the individual objects to be rotated and moved randomly. ...
maarr's user avatar
  • 13
1 vote
1 answer
45 views

How can I create a formula for proportional scale in geometric nodes?

How do I create a formula so that the scale changes and immediately becomes the same? For example: I set the scale to 2 and in another transform I changed it to 0.5 so that it would become the ...
Andrey Re's user avatar
  • 147
0 votes
0 answers
20 views

Position of voxelized instances with node mesh to volume

I have a node setup, based on voxelization, that animates the removal of parts of an object depending on the time interval. The goal is to use this together with the BlenderBim addon to simulate ...
walpa's user avatar
  • 1
0 votes
1 answer
48 views

Adjust traveling sine wave to match rotating point on circle

I want the icosphere to be rotating on the circle, while the sine wave moves on the x axis, so that the icosphere is on it. The wave moves according to |sine(x)| or ...
Kebab Sharif's user avatar
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0 answers
26 views

is there a way to fade image cards where they interact with surfaces

I have a geo nodes explosion sim with image planes instanced to points i want to fade the images where it collides with surfaces not just a plane but any surface
AAA's user avatar
  • 11
0 votes
0 answers
23 views

Could be possible to transfer the normal of a geometry node primitive?

I'm using the DataTransfer modifier to replace the normals of this tree with the normals of a sphere I will like to be able to do the same thing in a geometry node ...
ellipticaldoor's user avatar
1 vote
1 answer
43 views

Is there any way to create a boolean input to a ShaderNodeGroup in Blender 4.x using python?

I'm working now on a plugin that includes NodeGroups and I want to make a Boolean Socket. I remember that in the older versions it was possible to do this, but in the Interface system, I didn't really ...
Golden Dragon's user avatar
0 votes
0 answers
28 views

How To change the order of input sockets of a node?

Is it possible to change the order/position of the input sockets of a Geometry-Node in order to avoid intersecting connections?
Andy's user avatar
  • 191
0 votes
1 answer
52 views

Geo Node: Instance on Points and Rotation problem - I want to create something like the "yellow" for different shapes like pentagons and hexagons etc

The idea is to have different shapes like pentagons or octagons but I want to rotate the edges seperated diagonal so it will look like the yellow drawing. I tried to "instance on points" ...
falk's user avatar
  • 127
3 votes
1 answer
164 views

How I can keep material slots when joining geometry with a geometry node?

I have the following model with two material slots assigned Now I'm trying to duplicate the model and assign a different material to the duplication, but I get this result It's ignoring the 'Set ...
ellipticaldoor's user avatar
0 votes
0 answers
25 views

How to make sub clumps for geometry nodes based hair

In nature, hair often forms in clumps, however, often these clumps are made up of other clumps, if you want to make convincing animal fur you need to replicate this behavior. However I can't seem to ...
david warford's user avatar
3 votes
2 answers
358 views

how can I customize UV map the brick texture in geometric nodes

how can I make a kerpich texture so that it reflects correctly? For some reason, this method does not work. I want to arrange the texture in geo nodes, not in materials. is it possible? maybe I ...
Andrey Re's user avatar
  • 147
1 vote
2 answers
59 views

Is there a way to output a mesh from an arbitrary list of meshes in geometry nodes?

This question shows how you can build a node tree to select between mesh 1, 2 or 3, but it's pretty manual. Is there some way to do this for an arbitrary number of meshes, so you can add extra meshes ...
Nickh129's user avatar
0 votes
1 answer
33 views

Why while l am using blender new hair system in cycles render mode the hair curves seem like a tube rounded shape?

I am trying to make a hair with blender new hair system and when I go to cycles mode it seems like a tube-rounded shape. I checked the curve render settings but could not find anything useful. What ...
zisan's user avatar
  • 3
1 vote
0 answers
29 views

Looking to scale along normals using geometry nodes using a texture as a scaling factor

Not sure how feasable this would be but as the title suggests, I'm looking for a way to shrink a mesh along the vertex normals using a height map for the scaling factor. Context: This is for an animal ...
Jay Ott's user avatar
  • 11
0 votes
0 answers
32 views

3D Gussian Splatting looks strange after import

I am trying to import a 3D Gaussian Splatting scan into Blender using the plugin from this tutorial. But for some reason, the scan looks terrible in Blender (although in Unreal it looks like it should)...
Rumata's user avatar
  • 2,677
1 vote
0 answers
38 views

Bake generator animation?

Hi Im using a great generator called Flower Generator (bought from https://blendermarket.com/products/geonodes-flower-gen) It uses Geometry nodes to grow a plant. It animates the plant via geometry ...
Staiola's user avatar
  • 11

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