Questions tagged [geometry-nodes]

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

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cube normal not showing on geometry nodes

so i wanted to make a pilar and used geometry nodes so that i could "randomize" the x axis, the problem is that the original cube has a texture but the copis on the node don't use the normal ...
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11 views

how to get an even geometry/vector displacement within an animation on a curved shape whilst keeping the original volume

first time posting a question here, so if its in the wrong format etc. then please let me know! Building an animation for a client and they're looking for this kind of effect on a curve shape. https://...
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1answer
44 views

How can I retrieve current frame number for use in Geometry Nodes?

I know that I can use key frames in various fields of the Geometry Nodes. But I want a more explicit reference of current frame number. The only thing I found is the 'Frame' layout to enclose nodes. ...
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1answer
70 views

Vector Projection gives weird results?

I'm trying to project a vector onto another vector using the Vector Math node's Project mode like this: However, almost every output is just input B (1,0,0). This ...
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1answer
27 views

Geometry Nodes: instance another geometry [duplicate]

I created a stem using Geomtry Nodes and now I would like to instance it in a circle to have kind of a bush, but I can't find the way to instance an object created with geometry nodes. I don't want to ...
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31 views

Is extrude possible in Geometry Nodes?

I can't find any node related to extrusion or inset in Geometry Nodes. Searching web and Stackexchange in particular hasn't provided me valuable results. Is there anything like this or at least any ...
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29 views

Access and using geometry nodes as functions in Python

How can I use the Geometry nodes graph in python or at least get access to one of its node functionality? For example I want to use the Attribute Sample Texture Node along side editing vertex group ...
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2answers
50 views

How to create / animate a noise type image / texture using a given color palette

How to create / animate a noise type image / texture using a given color palette I have a specific color palette I want to use to create / animate a tv noise effect (along with being able animate the ...
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2answers
31 views

How to find out the type of a node in Geometry Nodes?

Disclaimer: I'm still fairly new to Geometry Nodes, so apologies if I've missed something obvious here... Let's say you're taking a look at some of the demo files that are generously hosted on the ...
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261 views

Geometry nodes maximum of two functions

I have created Geometry-Nodes which arranges the objects according to sine function. What I have achieved is this: What I want to achieve is something like this: My idea is that there will be two ...
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21 views

How do you manipulate both the START and END of an instanced point distribute in geometry nodes?

I am essentially trying to create something like this, where the fibers have a centrally located starting point, and all radiate outward to the periphery of the object. Preferably these instanced ...
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1answer
37 views

Point instances lose material after applying Geometry Node Modifier

I use geometry nodes (blender 2.93) to distribute cylinders on the cube (Point distribute, Point instance nodes are used) I define materials if Materials Properties for cube (red color) and cylinder (...
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21 views

Geometry nodes - separate collection objects by length

I want the objects in the collection to be distributed according to their length along one of the axes. Is there any way to get this information (y-axis length) about the objects in the collection? ...
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40 views

How to convert vertices to points with geometry nodes?

I made a Geometry Node that allows me to make a Fibonacci Spiral for a project that I am working on. However, I need to instance points on every vertex position and get rid of the edges. Do the ...
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1answer
61 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 ...
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47 views

Need help with geometry nodes instance textures not showing when going into rendered view

I have an object, with point distribute on it, geometry nodes. The points are instancing another object, with a transparent texture. (I used Transparent BSDF), when in the 'viewport shading' view, I ...
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1answer
42 views

Geometry Nodes: How can I align points/instances to normals without local rotation?

The lower torus is using a hair emitter and displays exactly what I'm going for: each instance edge is parallel to the next. The upper torus is using geo nodes and each instance has a local rotation. ...
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1answer
146 views

How can I see the output of geometry nodes?

I need a node like the "view" node in the Animation nodes. This is for debugging purpose. If I added two values or used the sin function and I want to check the results are correct or not, ...
3
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1answer
47 views

How to create instances in the centers of faces or edges, instead of on verts? [duplicate]

This is what the Point Instance node creates by default: Is there a way to create the points in the centers of the faces? Or in the center of edges?
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2answers
126 views

How do I build instances on a grid with Geo Nodes?

I am using geometry nodes to make a grid of icons. I have instanced the icon object over a Grid node. How can I make the instances of the icon appear as if the grid is building from the bottom left to ...
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1answer
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1answer
60 views

Creating new geometry per frame

I have a node group that calculates a Trefoil knot segment based on the current frame, and I am instantiating points at the ends of this segment in each frame. This works fine. However, in the ...
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1answer
26 views

Geomtry Nodes: point instance texturing

I created a cube with a basic texture on it (first picture). Then, using Geomtry Nodes I created a grid and instanced the cube on the the vertices of the grid, so at the end I have the kind of ...
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1answer
39 views

Geometry node: point instance from nodes [duplicate]

I'd like to do a Geometry node (I'm using Blender 2.93) that distributes some cones on the surface of a shape. For now, I need to create a new shape just for the cone, and then use ...
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19 views

How to change a Geometry Node field value using a Python Script

I would like to read and change a value in the Geometry Node editor using a python script. If for example I want to change the Density in the PointDistribution node, how would this be doing using a ...
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1answer
27 views

How to get randomized positions in certain area with geometry nodes? [closed]

i have a problem, with the node setup in Picture 2 I was able to get the fading hexagons around the controling empty in Picture 3. The grid in inside I get with the node setup in Picture 1. Now I try ...
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1answer
311 views

How do i randomly rotate point instances with either 90, 180, 270 or 360 degrees?

How do i randomly rotate point instances with either 90, 180, 270 or 360 degrees? When using attribute randomize, and choosing rotation as the attribute, I cannot ...
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1answer
39 views

Geometry nodes, randomizing the height on the Z axis for distributed points

I have a plane, subdivided, and point instance from a collection. How do I make every instance on a random height (z-axis) from a minimum and a maximum value?
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1answer
18 views

How to use collection of armatures with children meshes in particle system or Geometry Node Instancing?

I'm having a little problem right there: I have 5 different rigged zombies with different animations, so in the outliner they're armatures with a child mesh of the zombies: What I want to do is ...
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1answer
29 views

Odd geometry nodes (normal) behavior using Align Rotation to Vector node

Using v2.93.1. I am aiming to apply a collection of hull plates to a cylinder using geometry nodes. I am almost there, but something is wrong with 1 of the tiles alignment - which is presumably due to ...
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0answers
17 views

Geometry node model becomes white after converting it to mesh

I was trying to get the procedural building demo of geometry nodes to convert into mesh so that I can export it as a fbx for my game but when I apply the geometry node it becomes white Here's a video ...
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2answers
179 views

Array modifier with empty: is there a way to get “constant” scaling?

I have a circle. I add an array modifier with object offset to an empty. I scale the empty and i get: Is there a way to get constant distances of the circles? or adding a constant to the radius? I am ...
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1answer
53 views

Creating a polar chart / polar grid

Is there a way to create a polar grid / polar chart in Blender 2.93.1? I know I can create a circle and do several insets then draw the lines. I was wondering if there was a better way that can make ...
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1answer
30 views

Geometry Nodes Snap Object to Ground

Is there a way to snap objects to the ground with geometry nodes. I mean along z vector to chosen object based on the original instanced object's origin. I am trying to stay within a stable blender ...
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32 views

How to use “Point Separate” without losing edges?

When I use "Point Separate" on an object, the edges disappear: Is there a way I can use the Mask function of the Point Separate node without losing the edges in the mesh?
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2answers
130 views

How to rotate my points so that they point outside like windows on a building?

Is it possible with geometry nodes and a grid node with some "clever" math so that the outer "boxes" rotates to "outside"? Or easier: i have this: and of course i want ...
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1answer
19 views

Geometry node only distributed on specific area

Im trying to create a globe with some spheres coming out of it ( geometry node ) but I only want them to appear on land and not on the ocean. Any ideas on how to only distribute the point in the ...
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1answer
62 views

Instance random rotation not working for Single Vertex in geometry node

I have this array of single Vertex ( generated by array modifier ). And I want every vertex to have a slightly different scale of this cube. So I set up the geometry node like this: But I didn't get ...
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12 views

What type of value does Blender use for the Point Rotate Node when set to Attribute? [duplicate]

I really dont understand what value type Blender uses for this node. I have tried many diferenr values but dont understand. The nodes I am usign: The rotation when the value is 1: The rotation when ...
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2answers
57 views

How to animate VertexWeightProximity effect with Remesh modifier active

What I'm trying to do in blender 2.93.1: Animate a VertexWeightProximity effect (geometry nodes distributed/instanced cubes on mesh going away as empty gets near) while also animating the main mesh ...
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1answer
44 views

How to tell Geometry Node to place one object next to another dynamically?

I come from a game development background and am not quite sure if this is the right way of thinking in Blender, but let's assume that i have the following tasks: Create a tool that will generate ...
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1answer
131 views

Create a Vector with a Value Node as each value

In Geometry Nodes I want to create a Vector Node but with each value being driven by a separate Value Node. Like this: Thanks!
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0answers
25 views

Node lines are not visible even if connected

I am learning about Geometry nodes and shader editor but when i connect nodes to add textures it gets non-visible soon after getting connected. This thing may confuse me if there are many multi ...
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0answers
32 views

Remesh spheres in geometry nodes?

How can i remesh spheres to look like metaballs without destroying my wireframe object? Im trying to make this animation but metaballs are broken and wont render with geometry nodes.
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0answers
36 views

How to connect 2 geometry node using python script? [duplicate]

I want to connect 2 geometry node using python script. I'm currently capable to create geometry node using node_groups['Geometry Nodes'].nodes.new() but Still unable to connect 2 node. Can anyone help?...
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1answer
43 views

Geometry Nodes Collisons

I have a model that's made up of geometry nodes. They're intersecting. I want them to collide. What do I need to add to the node tree to make them collide? I tried following this, but I don't see a ...
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25 views

duplicate a collection onto vertex group

I am so struggling on a duplication issue. I want to duplicate a collection into some certain position, which is already define as vertex-group as shown below. I try to use geometry node to achieve ...
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1answer
200 views

Does anyone know why my animation renders in Eevee get kinda transparent in certain frames?

I'm using geometry nodes to make a building and I've tried animating the number of floors the building has. Every frame where a new floor is introduced, the building looks really weird and in the next ...
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1answer
44 views

Disappearing Geometry with Geometry Nodes? [closed]

Following this tutorial What should happen is, it should create a Thanos snap cease to exist effect. To me, my node setup looks exactly like his, but my geometry is just gone after adding a point ...
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36 views

Geometry Nodes - Color Value as Float

First, I'd like to provide some context. I have a low resolution 3d map. I made this map by subdividing a hexagon and applying a Displace modifier to it. A little color-ramp magic in the shader, ...