# 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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### Project Curve on Mesh - Geometry Nodes

I'm using geometry nodes to project an open curve on a mesh that is not flat. I have used raycast node but can't project the curve along normals (like a polygonal object). I have tried connecting the ...
14 views

### How can I get the orbs to stop jumping around?

Made with GeoNodes. How can I stop the orbs from jumping around? Video Link: https://youtu.be/asyiEA4VYm0 File Link:
1 vote
25 views

### Spawn unique instance per point

I'm trying to instance a collection of images, such that each point has a unique image. When using a mesh to points node to create the points, everything works fine when set to Vertices, Corners, or ...
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### Is there a way to select the vertices of a mesh by the local axes of another object in geometry nodes?

I want to split the objects in a collection with a boolean and transform one side. In this case, it seems to be common to use mesh islands to separate geometry. But this is not useful in this case, ...
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### Constrain a Bounding Box Within Another Using Geometry Nodes

First post and very new to geometry nodes, so I might be way out of my depth here. What I want to do: Here is two bounding boxes generated in geo nodes from two different objects. I want to constrain ...
41 views

### How do I delete all vertices above a line with Geometry Nodes?

I am learning to use Geometry Nodes. I have a triangulated grid with corner vertices at $(0, 0, 0)$, $(1, 0, 0)$, $(1, 1, 0)$, and $(0, 1, 0)$. I want to delete all vertices (and faces and edges) ...
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### Geometry nodes reorders UV layers when using Join node

When using the Join Node and a vertex group of geometry I duplicate and join, UV maps are reordered. How can I ensure the UV layers maintain the original order when using Join Geometry Node? When ...
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1 vote
33 views

### How can I preserve Driver links between an add-on and Geometry Nodes?

Blender 4.1 makes it possible to create a Driver between an add-on driven value ("Copy as New Driver") and a Geometry Node value ("Paste Driver") but the link is working only ...
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137 views

### Menger Sponge Fractal creates weird outline on Cube surface when using Cycles

So I have very recently began to mess around with Geometry Nodes in Blender and since my scene required the usage of a Menger Sponge Fractal, I followed a YouTube tutorial to make sure I learned some ...
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### Mesh created with Geometry Nodes is slightly shifted compared to mesh created with XYZ Math Surface

I was trying to complete my answer for this question. I'm creating an XYZ Math Surface via Add > Mesh > Math Function > XYZ Math Surface using the following parametric equations: ...
• 12.9k
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### Why Does Geometry Node Mesh Boolean Work for Some Objects But Not Others?

I am using Blender 4.1, and am trying to create an animation in which an object is only visible while it is in the interior of a cube (which will be made transparent). To do this, I've created a very ...
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1 vote
30 views

### Geometry Nodes: Is it impossible to make precise dimensions in this steel frame prototype method?

The goal with this node setup is to add geometry to edges and make them look like steel frames. The method bellow works well, but there's a problem, it's only precise for cubes. Anything different ...
28 views

### How to reset or reverse instance transform without Realize Instances node?

I'm trying to reset or reverse instance scale. I have 3 Instances attach on Main object. Main object takes A as Instance, A takes B, B takes C. I set a group input named Scale Fac to scale instance (...
155 views

### How to create border outline?

I tried many different ways to create a border outline for my objects. The outline helper add on, to duplicate the meshes and convert the border edges to grease pencil and I tried Geometry Nodes. But ...
30 views

### How do I add delay to the effects of a geometry node?

I am creating a robot with 8 identical arms arranged in a circle (a bit like an octopus). I have modelled and rigged one arm, then I made a simple geo node modifier which rotates the arm separately by ...
44 views

### How to get a random number only once per instance, in stead of for each vertex, in geometry nodes

I've built this rather complex way to create a box with tape on it in geometry nodes. This is because I need to create many different boxes according to specific size profiles. The setup works but I ...
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### Geometry nodes: problem with intersect boolean of mesh and instances

I`m making a roof generator, and I have a little problem with intersect of meshes: And there is the result Here is nodes and geometry:
1 vote
41 views

### Proximity colors between instances of a same pack

I'm trying to do a little effect where instances (any kind) on points would change their color based on the proximity of another instance. Thanks to some tutorials and questions here, I've ...
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233 views

### Geometry Nodes - Fill Quadrilaterals That Intersect

I have a basic setup with two quadrilaterals that intersect in a sample blend here to demonstrate what I think should be a basic concept, but I cannot figure it out. For example, you can just create a ...
• 143
383 views

### Create repeating geometry across a face

I'd like to create repeating instances of geometry over a single selected face of an existing mesh. Such as the small square cutouts in the pictured panel: I cannot use a material because the result ...
• 161
34 views

### Geometry Nodes Impact on Shading Nodes

I created several parallel instances of a wooden beam object using the following Geometry Node Tree: And with the following Shader Node Tree: As expected, each instance of the beam has the same ...
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### Geometry nodes simulation doesn't show in render

I'm trying to learn VFX in blender and decided to place my geometry node simulation inside a video. Unfortunately, despite everything working fine in viewport, the simulated object doesn't show in ...
113 views

### How to make instanced primitives' max/min coordinates to not be higher/lower than input mesh? (geometry nodes)

The goal here is to not let each instanced cube's position to go beyond the input mesh'. The cube primitive node is added as instances into points of the input mesh. However, the cubes are placed from ...
131 views

### How Do You Randomly Translate Vertex Groups for Individual Instances for Instances on Points?

I've created several instances of an object on points along a mesh line (see below). I would like to disrupt the uniformity by translating the vertices at the left and right ends of each instance by a ...
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### How can I add a Geometry attribute/ parameter to a Modifier Geometry Node and name it?

How can I give a name to a parameter of a Modifier Geometry Node? I have read: https://docs.blender.org/manual/en/latest/modeling/modifiers/generate/geometry_nodes.html https://docs.blender.org/...
1 vote
36 views

### How can I split and remove partially overlapping faces without Mesh Boolean?

I have managed to remove overlapping faces using the Geometry Proximity node. However, for intersecting overlapping faces, I couldn't figure out how to partially remove the overlapping face without ...
• 12.9k
1 vote
31 views

### how to use geometric nodes to deform geometry instances with curves?

I followed this tutorial, but ran into a problem creating instances. What I want to do: I want the geometry nodes to create instances of the object I place as a reference and deform it along curves. ...
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### Can you explain how to use Geometry Nodes to create a parametric mathematical object? [duplicate]

I want to generate a 3D surface from parametric equations X(u, v), Y(u, v), and Z(u, v) and ...
• 275
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### Repeat zone with raycast issue

I'm trying to follow this tutorial for creating a ball(s) bouncing inside a cube using geometry nodes. I figured I could go a step further and instead of repeating raycast nodes manually I could use ...
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1 vote
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### Instances moving along path want to duplicate and create an echo like effect

I have this set up which I like, it simply lets me slide the object along the curve. I was interested in knowing if it's possible to duplicate then offset the effect plus scaling down or up the ...
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### Is it possible to animate a transition between two XYZ Math Surfaces?

Using the Add Mesh: Extra Objects add-on, I have set up a group of XYZ Math Surfaces Add > Mesh > Math Function > XYZ Math Surface which generate various parts of a single mesh object, with ...
• 275
46 views

### Maintaining collection structure when appending assets with Geometry Nodes modifiers applied to them

I marked an object as an asset. It has a complex Geometry Nodes modifier that uses "object info" and "collection info" nodes to import other objects. These referenced objects are ...
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### How can I make the edge geometry fully join?

I want to convert edges into steel frames and ensure they are connected. On the left is a default cube with Geometry Nodes - the problem is that the new geometry of beams/edges doesn't fully join like ...
472 views

### How to make an Equilateral Triangle Grid with Geometry Nodes?

I’ve been dying for an equilateral triangle grid mesh within geometry nodes for a while now! I was attempting to make an equilateral triangle grid that can be controlled by the input parameters ...
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### Geometry nodes sampling indices from selection [closed]

I have separated geometry, where I can sample previously captured indices. How can I use/transfer these indices to sample the original geometry? Thanks! maybe this img makes it more clear to what I ...
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### How to append collections with GeoNodes in Blender while reusing data and maintaining object control

I want to append a collection containing objects with geometry nodes modifiers applied to them. After appending, I still need to be able to manipulate the individual objects in the collection as usual....
• 417
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### How can I decrease the leaf amount by branch size?

I am trying make a branch with leaves, but there are 2 problems: I decrease the branch size by spline parameter, but the number of leaf Instances (Icospheres) doesn't change. How to decrease the leaf ...
318 views

### I don't get how the “edge angle” node works

I'm trying to figure out how the “edge angle” node works: I can't get the right angle on the right line, there's always an offset and I can't figure out where my mistake is. In the attached example, ...
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1 vote
27 views

### How to prevent Blender from renaming appended objects' shared data blocks

I'm running into an issue with appending objects in Blender. I have a file (File A) with several objects that share the same Geometry Nodes modifiers, Node Groups, and materials. When I append these ...
• 417
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### Using a greyscale image as a weight map for point distribution

I imported this image with blender GIS using the basemap on mesh option. I'm trying to use this image as a weight map that distributes points randomly on my mesh, where darker colours indicates a ...
151 views

### Merge Curves via Geometry Nodes

I'm trying to create speech bubbles using Geometry Nodes, allowing for different shaped tails and positions of the tail. I can't figure out a method to join the curves in a smooth way such that the ...
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### Understanding The Purpose - Capture Attribute

I've been learning to use Geometry Nodes lately & stumbled upon a question. In the simple setup I made (showed in the screenshots) I use the Capture Attribute node in "Float - Point" &...
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### Geometry nodes: How to snap curves points to nearest surface?

I would like to snap all distributed curve points to the nearest surface of the source. See my example. In my example I'm distributing generated mesh lines on a source mesh (Torus). My goal is to ...
• 2,077
473 views

### How can I make text look like a digital message board with geometry nodes?

Here is what I am aiming for: Here is what I currently have: As you can see i've tried using a basic distribute points of faces node setup to turn my text into “pixels” but i don’t know how to make ...
28 views

### in blender 4.1 is it possible to add vertex groups without pre-existing geometry with pre-existing groups?

I have only seen blender 3.0 workarounds. Is this no longer issue in blender 4.1? if it is no longer issue, how does one create group? I have tried 'named attribute' but does not work so assuming it ...
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### How can I rotate the face normals in this way in geometry nodes?

How can I rotate the face normals in this way in geometry nodes?
24 views

### Disintegration effect on several parts of the mesh using geo nodes

I have created Geo nodes with a simulation for a disintegration effect (I followed this video: https://www.youtube.com/watch?v=xlVuIh3td9g ). Currently, there is a boolean that determines where the ...
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41 views

### Scattered objects are too small and moved to the side

I'm using Blender for the first time and I'm following the donut tutorial by Blender Guru on YouTube. I want to distribute 4 different types of long sprinkles on my donut icing. It worked with the ...
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1 vote