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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48 views

Geometry nodes 3.0 controlling values for individual instances using proximity object [duplicate]

I have created a system of entirely procedurally generated flowers which involves a spaghetti of groups within groups and instances within instances. The part that I am having trouble with is ...
4
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2answers
274 views

In Blender 3.0, how can we control instance properties (scale, etc.) by proximity?

I've been looking at tutorials and various node tree screenshots, but since the 3.0 release many aspects of Geometry Nodes have changed, making those sources largely irrelevant. In 3.0, how can we use ...
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3answers
232 views

Adding a new Geometry Nodes modifier without creating a new tree

How do you add an already existing Geometry Node tree to an object without making a new tree? Adding geo nodes as a modifier automatically creates a new tree named ...
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1answer
40 views

Transform cylinder to plane while keeping the circular distance

I am trying to achieve the following transformation: I want to "flatten" a cylinder while keeping the distances of the cylinder layers. I depicted the desired transformation to clear things ...
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0answers
26 views

inky diffusion on 2d plane

How can we make inky diffusions on 2d (like on paper, not 3d) along curve with random (actually not random, it should depend on how time you wait on certain area) widths and random diffusions walks of ...
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0answers
24 views

Geometry Nodes: Reflected RayCast (Camera Culling with Reflections)

I want to compute second ray to distribute my points for reflection surfaces (Somehow solve camera culling problem for reflections, when you cant see scattered trees/grass on glasses with camera ...
3
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1answer
68 views

Overwrite original geometry UVMap with Geometry Nodes uv_map

Is there a way of overwriting the UVMap of the object, the one used by the Texture Coordinate node, with the generated uv_map that geometry nodes produce with the primitives? I want my procedural geo ...
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1answer
27 views

Zero Normal with GeoNode "Distribute Points on Faces"

I have distributed points to the surface of a sphere and instanced another sphere on to those points. I would like to move the small spheres along the surface of the first sphere. I was planning on ...
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0answers
15 views

Procedural workflow from SVG to 3D-Blob

I'm currently trying to build a workflow which allows to import a SVG and render an beveled/inflated object from it. Illustrator now has something very close to what I want: "3D and Materials -&...
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1answer
28 views

Animate instance points in a Loop on a Surface (Geo-Nodes)

Is there a way to animate instance points on a mesh surface, that is driven by a curve, in a loop in geometry nodes? I tried to manipulate the node setup for animating the looping points on a curve, ...
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1answer
30 views

How to delete points inside of a mesh?

Context: How to convert any model into lego bricks using geometry node? I want to creat lego-like points on the surface of a monkey, but there are too many points inside of the monkey. I don't know ...
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1answer
16 views

Geometry node modifier input attribute assignment does not work with python script

A follow up question to How to get Geometry nodes modifier inputs and its type using python But the code: ...
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1answer
163 views

Self-generating random shapes with Geometry Nodes in 3.0

I’m trying to make some procedural shapes with geometry nodes in Blender 3.0, I’ve started with a cube node with some subdivisions that I’ve distorted with some Voronoi and noise textures at different ...
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1answer
33 views

(3.0) Geometry Nodes break Vertex Colors

https://blender.stackexchange.com/a/245919/134355 I need to use the method shown in the linked post for something of my own, but even when using that exact Node layout and Modifier Setting, it ends up ...
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1answer
25 views

Get random scale for each instanced object of a clump of objects with Geometry Nodes

I am trying to instantiate clumps of spheres where in each clump each sphere has a different scale. Right now I managed to generate the clumps but all clumps have the same random scaling resulting in ...
3
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1answer
40 views

How to convert any model into lego bricks using geometry node?

I want to convert many 3D models to lego bricks. The effect is the same as this plugin https://www.blendermarket.com/products/bricker?ref=232. Expected: Here is what I get: There are at least 3 ...
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1answer
16 views

How to keep instances within the volume

I'm trying to create cookie chips within a chocolate with geometry nodes. I've managed to create the instances but within the surface. And all the references/tutorials (even blender description of the ...
6
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3answers
179 views

Geometry nodes instance grid, with material parameters for specific instances

I'm trying to create a grid of objects, where a parameter for their material depends on their location (for example, increase emission strength of objects along the rim of the grid) What is the best ...
3
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1answer
29 views

Evaluate a curve with a bevel as a curve, not a mesh in Geometry Nodes

If a curve has a bevel depth (aka radius) or bevel object (aka profile) it's automatically evaluated as a mesh in GeoNodes: Is it somehow possible to use beveled ...
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1answer
19 views

How to render vertex only using geometry node?

Expected: render what I see in the viewport. Seen: Nothing in render. I want to render vertext of a monkey. I simply converted a monkey to points than convert points to vertex. The vertex in the ...
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0answers
25 views

How to make slime with procedural bubbles using Geometry Nodes?

I've just installed Blender 3.0 and it has renewed my curiosity for Geometry Nodes. I was thinking of what might be a fun use for Geom Nodes and the idea oozed into my head: SLIME! Because slime has ...
4
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1answer
47 views

Geometry Nodes - Selections from A Variety of Collections Based on XYZ Index values

I'm trying to understand Geometry Nodes in 3.0 by doing my own modular generator where instances are being generated from a simple base mesh object (see image above) that is then put through a Remesh ...
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1answer
48 views

Geometry Nodes - How to change points density along curves, if curves are instances?

I can change points density along quadratic Bezier by moving central handle, like in example_1. Example_1. But if quadratic Bezier will not be straight, I could not change its points density without ...
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0answers
27 views

Geometry Nodes - How to access rotation in 3.0+?

Bit of a silly question, but apart from using an Object Info node, how can I get the rotation of an object? I have a collection of objects which I'm separating by IDs. I'd really like to get the ...
2
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1answer
70 views

Struggle without attribute nodes PART 2

I have a setup like this: And i want to scale UV Sphere depending on its position on Z axis for example. With attribute node that was done in 1 operation and now i cannot find solution, using ...
9
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1answer
550 views

Blender 3.0 Offical Release get rid off some geonodes that were in 3.0a - what to do in cases such as this?

i found tutorial made by Default Cube which shows how to make some cool visuals - you can find it here https://youtu.be/Doqs_4FHo6U?t=245. Link is time stamped at exact moment where my problem happens ...
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1answer
31 views

Geometry Nodes Atribute Math

I am making Building and i am trying to Change the Window Corner into WallCorner
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1answer
41 views

Trees using geometry nodes to effect density of branches in certain places [duplicate]

I am porting a tutorial on YouTube over to Blender 3 which uses completely different geometry nodes than Blender 2. This tutorial explains how to build trees with geometry nodes. I have my nodes set ...
2
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1answer
27 views

Geometry nodes to make branches not appear on the bottom section of tree trunk

I am porting this YouTube tutorial to the Blender 3 nodes https://www.youtube.com/watch?v=WzIdcGdGXLM. I have successfully ported mostly everything over to Blender 3 up until about the 33 minute mark. ...
3
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1answer
121 views

Geometry nodes connection between values

Hello, I don't understand why connecting the random value output and any of the grey inputs on the right doesn't match. What do I need to add? Thanks!
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0answers
29 views

Geometry Nodes Not Visible in Render [closed]

I've recently started using geometry nodes in Blender 3.0 and everything was going fine until I hit render. I'm not sure what it's about. I've made sure to have the render camera checked on the nodes, ...
4
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2answers
92 views

Geometry node, face normal directions

I want to place planes facing all the same direction on a tube/cylinder which positioned horizontally using the Geometry Nodes. I could do this if I didn't apply rotation after turning 90 degree. ...
4
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2answers
90 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 ...
2
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1answer
92 views

Blender donut - geo node sprinkles not on top of icing

I am following the Blender 3.0 beginners tutorial on geometry nodes and i am following the tutorial exactly as is in the video only when he selects Reset children in the collection info node the ...
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1answer
15 views

Geometry Nodes: is it possible to put a curve to connect in vertices of a grid or any other mesh? for a graph

I am trying to make a graph and I want to make it procedural in some way, I want to be able to put a curve connect in between different verts so when the graph gets bigger so does the curve
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1answer
42 views

InstanceOnPoints: how to parametrize the instances depending on the points (Blender 3.0)

in the example below, the Strings should show any specific value of the curve points. For example the index+1 esp. the hours of a clock, or any other attribute. How can I grab values from the curve ...
2
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1answer
58 views

Can't get tree branches perpendicular to trunk with geometry nodes

I am using geometry nodes to build this tree. The problem is that the tree branches sprout vertical and parallel to the trunk. These are the random points that I have on the trunk via geometry nodes. ...
2
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1answer
25 views

Delete unused sockets geometry nodes

I have a Group Output node that I accidently added extra input sockets to. Even when I delete the node and add a new ...
2
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1answer
42 views

Python Geometry Node Inputs properties [duplicate]

I have a bunch of geometry nodes inputs exposed on a UI panel. I used the layout prop to do so ...
3
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1answer
33 views

How to avoid objects intersecting and sinking into the base object with geometry nodes?

I am new to geometry nodes and I made a simple node architecture to achieve the result shown in this imgur image folder. As you can see from the second image, roses tend to intersect with each other ...
5
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3answers
222 views

Blender steps in geometry nodes?

I'd like to do array modifier equivalent in geometry nodes. Image below to clarify it more
2
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1answer
46 views

How to efficiently hide and show

I'm trying to show / hide a multitude of mouth models to simulate talking (because the face has such poor geometry that a facial rig isn't possible). Here is an image listing all the mouth models: I ...
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0answers
14 views

how could I get the neighbor faces of a face in GN?

For the face F, how could I get the ID/Index/any information of f1-f4 in GN? The Face Neighbours node only provides face/vertex count, just doesn't help.
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0answers
14 views

file using geometry nodes made in v2.92 will not open with any later version

I just upgraded from version 2.92 to version 3.0. Most of the files I made in v2.92 open with no problem but some do not. When I try to open these, the program hangs and becomes unresponsive. I ...
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0answers
8 views

When using the "Realize Instance" node my instances lose their texture [duplicate]

I'm using a grid primitive to instance a collection of planes (each with a different texture) to simulate "windows" for buildings. Since I will be instancing the buildings themselves later, ...
2
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1answer
38 views

geometry nodes disappear after applying

I made a geo nodes setup for the ball and used a object info of a single ball but when i apply the geometry nodes in the modifiers tab every ball disappears from the scene except the original ball. ...
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0answers
32 views

Using Geometry nodes 3.0 is there a way to animate the camera to follow a bezier segment?

In G/N 3.0 I have a bezier segment converted to mesh with a grid as the profile, distributed points, and instanced random scaled cubes producing a tunnel around the bezier segment. I am trying to ...
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1answer
35 views

What should rotation vectors look like?

I instantiate cones along Grid mesh and add offset by noise texture. I'm wondering what these rotation vectors look like. I can't figure out what they look like.
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2answers
87 views

What does a black and white texture look like after converting it to vectors?

Is my guess that I showed in the picture below correct? If not, what's the best way to represent a group of vectors emerging from a black and white texture?
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1answer
115 views

How can I offset a texture in Geometry Node?

It is important that the texture is offseted and not just the geometry in general. I want the texture to "float" through the geometry. Like this.

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