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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Scatter objects with different forms and sizes on flat surface without intersections

My goal is to make a node group that can distribute random objects over a given surface without (noticeable) intersections. I suppose the surface is flat, but it can be different forms (rectangle, ...
Crantisz's user avatar
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Recreate Solidify Thickness Clamp in Geometry Nodes?

I am trying to build the Solidify modifier in geometry nodes. Generally this is simple as there are many ways to offset a copy of the geometry. And we have Extrude to create the Rim. However, I am ...
Ascalon's user avatar
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Blender Geometry Nodes: How to find vertex neighbor id's and positions

Given that Blender Geo Nodes "Vertex Neighbors" nodes only outputs only the neighboring vertex and face counts and NOT the point ID's and positions, how is it possible to get the neighboring ...
jacobo's user avatar
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How to get access to Armature pose bones info from Geometry nodes?

I have an armature with several bones, each of them I would like to use to control transforms of other objects. Normally I would either directly parent objects to the bones or use constraints or ...
Andrey Sokolov's user avatar
5 votes
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GeoNodes: How to use captured positions from one set of points and offset individual mesh island positions using the captured positions

Link to the blend file (uses Blender 4.0): My question is a little long, but hopefully with the screenshots it becomes clear what I am trying to achieve. Here's what I have so far in my geometry ...
Joshua Hawley's user avatar
5 votes
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573 views

Is it possible to control the radius of the skin modifier with geometry nodes?

Is it possible to apply to an object (formed by only vertices) a skin modifier, and then control the radius of the modifier using geometry nodes? This means that the object would have two modifiers, ...
Artichoke's user avatar
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65 views

Spiral Array with geometry nodes issue

I'm trying to spiral out some elements/bridges off a central column with geometry nodes. This setup works for the most part but I get these two elements in a wrong position and rotation. how can this ...
Jimmy's user avatar
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How can I create an outline around an object?

I want to use a geometry node to place a fixed number of instances on the outline of an object based on the camera's viewpoint. How can I place a fixed number of points on the outline of an object ...
toyxyz's user avatar
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Offset and time-scale Armature animation in Geometry nodes instances

Is it possible to randomly offset and change speed of animated assets that are instanced on GN points? I've found a tutorial on Youtube in which author duplicates assets and node groups each time to ...
Sergey Kritskiy's user avatar
4 votes
0 answers
223 views

Geometry nodes: calculate the cross sectional area of a moving object

I'm trying to model the drag force (Fd) on flying objects. I would like to make the model procedural, so in which I now choose to use points, on which I later can instance. The drag force formula is: ...
EwSa's user avatar
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Is there any way to render a perfect curve just like pointclouds in blender?

When we use the 'curve to mesh' node in geometry nodes, sometimes we cannot get an ideal results because mesh overlap frequently happens and leads to bad shading on surface, just like this figure: So ...
Shiki Ryougi's user avatar
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Road / street network with geometry nodes: How to get all neighbouring vertices? Fit exactly instances on curves? Deform instances to multi curve?

Tried to make road / street network system with geometry nodes in blender. Plan is to instance street / road chunks on vertices and along edges in between intersections. Mesh topology have non ...
Damian's user avatar
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434 views

How to access Split / "vertex-per-face" normals in Geometry Nodes 3.0+?

I want to use the custom normals already present in my geometry but the Normal node only seems to output generated smooth normals. The spreadsheet only contains one normal vector per face, I don't ...
InTheBeef's user avatar
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Geometry nodes: control light intensity

I'd like to create a geometry node that automatically adds a light and configure its intensity based on the inputs of the nodes. I managed to add the light using an additional collection + the ...
tobiasBora's user avatar
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Geometry Node: manipulate a list to create n objects

In Blender 3.0, using Geometry Mode, is there a way to create a list like [0,1,2...] and apply various operations on it (math, zip,...) ? For instance I could use ...
tobiasBora's user avatar
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Geometry nodes and physics?

Can Physics be used in conjunction with Geometry Nodes (Blender 2.92+)? I have a attribute sampled plane using a scaled Cube as the point instance. I would like to apply a gravity (Rigid Body World/...
PLM MPT's user avatar
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How to change text in geometry nodes based on position

I have a basic subdivided plane on which I distribute some points and I would like to have at each point a text with the point's Y position. The problem is, if i create text from string, that will ...
sertyuio's user avatar
3 votes
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44 views

Ant colony network in Geometry Nodes

I want to make a 3D network similar to the inside from an ant colony by using Geometry Nodes. I am a bit clueless on how to start, maybe someone could give some pointers. This is an example of how I ...
Mare's user avatar
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105 views

Contour lines every z-level of this stepped landscape

Trying to recreate this holographic animation all by myself with geometry nodes. Watching several tutorials I used a texture map to create the landscape layout. I do not know how to get a selection of ...
fonz55's user avatar
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461 views

How to create an Outline with Geometry Nodes?

I have been desiring an answer to the following question, How can I create an outline around an object? for a while now. Below are 3 of my closest attempts. Attempt 1 In my first attempt, I flattened ...
Obfuscate's user avatar
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Assets from the asset browser copy the geometry nodes modifier, is there a way to make them a single user copy?

I have mesh assets in asset browser. Each time I drag them into the scene, the geometry nodes modifier to the mesh also gets copied. I have to click the number (3) to make them a single user copy. I ...
jugaadanimation's user avatar
3 votes
0 answers
61 views

How to find out if geonodes's viewer is active?

Using python i can access the node bpy.data.node_groups["Geometry Nodes"].nodes["Viewer.001"] But how can I find out if it is currently active ...
ugorek's user avatar
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3 votes
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Audio Peak Meter

I’m trying to make an accurate audio peak meter in blender and can’t seem to get it right. So here’s what I want to do… The Z scale of object B is being animated by an audio file which I imported in ...
Adam's user avatar
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3 votes
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211 views

Help with raycast node to delete overlapping faces

I would like to achieve two things: Delete inverted faces (I have this sorted using the delete geometry node) Delete overlapping faces that are not inverted. Using the basic mesh below, how would I ...
AJNZ's user avatar
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3 votes
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257 views

Geometry Node Attribute Unusable on Density (Shader Nodes)

I've found something weird. I have an Fac Attribute in my geometry nodes (it's a simple gradient). When I use it in Shader Nodes, it works, but not for the density value on volume absorbtion or volume ...
leevmealone's user avatar
3 votes
0 answers
146 views

Geometry nodes: is there a way to create a centerline of a closed curve/mesh?

See above image for a reference. For this kind of closed curve I would like to create a centerline. I have previously worked with an extension in Inkscape which creates a centerline but it is cutting ...
muckyu's user avatar
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0 answers
217 views

Why is my "extrude mesh" offset scale uneven (Geometry nodes)

I'm trying to make levels for my game in a more procedural way and thought that geometry nodes would be the perfect way to start doing that, I'm trying to create some walls and an edge around this ...
Giantswing's user avatar
3 votes
0 answers
96 views

How does 'Trim Curve' node evaluate the order of splines?

I'm animating trimming of Curves with Geo nodes. My setup looks something like this. I'm delaying the start of the animation for multiple curves. I don't know how to control the order in which the ...
wojtas's user avatar
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3 votes
0 answers
146 views

How to Copy and Deform Array on each spline with Sample Curve?

Based on @Robin Betts's sample - how to bend geometry with geometry nodes If the curves have multiple splines, How to Copy and Deform on each spline? or other implementation methods(Not Instance on ...
Zhimou Yuan's user avatar
3 votes
0 answers
174 views

Shortest path node question. How to prevent paths from overlapping?

I am trying to create lines that connect point A to point B without overlapping, and I also need the ability to procedurally generate the number of points. So far, I have not been successful in ...
Sforz's user avatar
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180 views

How can I create custom texture coordinates for a volume?

My ultimate goal: I’d like to create procedural cirrus clouds (long, thin, feathery high altitude clouds), ideally shaped fairly directly, e.g. with a curve. There are some very good procedural cloud ...
Tim Nolte's user avatar
3 votes
0 answers
585 views

How to make a procedural road network using geo nodes

I'm trying to get a system where I can draw a road using Bezier curves, then having geo nodes do magic to connect the roads at intersections. this is what i came up with and it turns this curve into ...
Spearhead's user avatar
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3 votes
1 answer
211 views

GN: Replace certain string character with certain mesh in Geometry Nodes?

Does somebody figure out how to replace a certain string character with a certain mesh in geo nodes? I've tried but the slice string node doesn't allow field input. This screenshot is not geonodes, ...
Miguel's user avatar
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3 votes
0 answers
689 views

How can the Bevel Modifier be replicated in Geometry Nodes? (basic functions only)

Although a bevel modifier is in the works for some upcoming release, I still wonder if it could somehow be reconstructed in Geometry Nodes with the currently available versions (3.3 LTS, 3.4). To ...
quellenform's user avatar
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3 votes
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144 views

How to get the shortest connection between two vertices in Geometry Nodes?

Top and bottom of the points: the top and bottom plane points have random position, but equal number. the points are not exactly on the same plane, but is XYZ distributed. the maximum upper limit ...
Robert Zhang's user avatar
3 votes
1 answer
655 views

How to instance a roof tiles?

Imagine that I have a mesh, that represents a quite complicated roof, consists of planar faces: Is it possible to instance a roof tiles like this using geometry nodes? Here is the setup that I have ...
Crantisz's user avatar
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3 votes
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375 views

Geometry nodes: smooth transition between two mesh boolean connected objects

In this question I described the context that I'm striving for. After several attempts and with Quellenform's help on this question, I'm getting close to a result: By means of the ...
EwSa's user avatar
  • 573
3 votes
1 answer
175 views

How do I align the edges with the corner cubes?

Sequel of: Vertices are not connecting Hello, I once again have a bit of problem with my geometry node. I want want to align the endpoint edges of the beams with corners, like the one on the right ...
codedevil666's user avatar
3 votes
0 answers
437 views

Geometry nodes instances animation, then apply Physics?

I'm trying to add Physics to some Geometry Nodes instances. I have an animation in GN, where the instances moves up, then to the right, and then I would like to apply Physics to make those instances ...
Olivier's user avatar
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3 votes
0 answers
711 views

any way to inspect the value of a node's unconnected output socket?

I know that you can inspect the value of the output socket of a geometry node when hovering it. That is nice. But is there a way to inspect the value of the output socket of a node when it is not ...
gordie's user avatar
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3 votes
0 answers
86 views

Progressive build animation organic mesh solutions

I search many solution to make a progressive organic meshing like this exemple : I have explore solutions with : curve (start/end mapping) array (fit curve) caps round and modifier curve boolean (...
Pomess's user avatar
  • 431
3 votes
1 answer
182 views

Using Spreadsheet Sequence as an Attribute?

is there any idea to use or turn the vertices sequence in spreadsheet to attribute that can be used in geometry node ?
mshmsh's user avatar
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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
2 votes
0 answers
51 views

"Separate XYZ" separate the Z axis in half! why?

As you can see I have not used the "Compare node" to choose the positions greater than zero but the "separate XYZ" node has already done that why is this happening? I was following ...
Orange in Dark's user avatar
2 votes
0 answers
64 views

Geometry Nodes - Optimizing mesh instancing on a patchy grid

I have this generated selection of points that I'm instancing meshes onto, they are in a grid pattern but not all spaces on the grid contain a point. What I want to ask is if it's possible to cycle ...
SHill's user avatar
  • 21
2 votes
0 answers
79 views

Sub-steps setting for Simulation Nodes

In the Blender 4.0 online reference, there is this mention in the Simulation Nodes section: In the Node Editor the inputs can be renamed, shuffled and removed. This is also the place where sub-steps ...
Karel Dobbelaere's user avatar
2 votes
0 answers
87 views

How to make a simple procedural gear setup with Geometry Nodes

Let me explain what I am building and the use case first! I am recreating a mural done by my father, as you can see there are many mechanical parts here that I want to animate, however, I am sure he ...
MASTER_2E's user avatar
  • 511
2 votes
1 answer
97 views

How to add new vertices to a Vertex Group in Geometry Nodes?

I am creating some new geometry and would like to assign it to the appropriate vertex group, so I can later apply a bevel in modifiers or add material. I've created the VG but am struggling to figure ...
Perrishnikov's user avatar
2 votes
0 answers
90 views

Geometry Nodes: How to make a vertex color gradient on a tree depending on distance to root point?

I'm trying to create a vertex color gradient on a mesh created by converting a branch made with hand drawn curves to a mesh using geometry nodes. I want to color each edge ring on the created mesh ...
Adkopras's user avatar
2 votes
0 answers
27 views

Is there a way to select shape keys via geometry nodes?

I'm trying to create a setup using geometry nodes that will cycle through an object's different shape keys using an integer slider - is it currently possible to reference the shape keys in Geometry ...
JaRa's user avatar
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