Questions tagged [geometry]

Questions pertaining to creating, generating or editing an objects geometry. Object geometry is defined by editing and creating the location and rotation of vertices, edges, and faces.

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Can we scale a curve relative to the distance between two objects? I tried doing it in geometry nodes, but curves aren't supported there

This is what I made. It works well in scaling meshes, but I can't seem to do anything about curves.
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Geometry Nodes : is it possible to get the acceleration/speed of an attribute?

Is there a way to get the acceleration or speed of an attribute, for instance about the Z location of a point ? Having this would permit to work on effects like bounces. Thanks !
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Is there any way to add geometry to an object according to the "outline" of texture?

This is probably wishful thinking, but is it possible to add extra vertices to follow the texture of the object, without adding them manually with Knife or something similar? For example, this Mario ...
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Heavy "Instancing" Viewport, Mac Studio Performance

I recently purchased a MacStudio and am looking for advice on the best setup for the unit. I’m working on a project where I’m using geometry node and instancing corn, wheat/oats over large areas. I’ve ...
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Control the seed of an object from another object

Suppose object A is instantiated in object B in geometry nodes. Can I control the seed value of object A from object B. Is there any way to transfer the seed value in this way?
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combining 2 separate objects as different multires levels

I have 2 different objects. they used to be 1 object, a sculpt with a multires modifier. that file was lost, but i have the 2 exported meshes (low and high poly). since they used to be 1 object with a ...
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1 vote
1 answer
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Is there a way to control the percentages of random instances?

I am looking to randomly instance objects onto a plane using Geometry nodes and Ive got that working fine. But I want to be able to control the proportion of the different instances. For example if ...
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Selecting most and least brightened vertices in a model

Let's say there is a point light source which is casting light on a model. There will be some most and least brightened vertex/vertices on the model due to point light source. Is there a way to select ...
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Pointiness mask disappears/leaves artifacts during render and on baked textures

Version 3.1.2 Blend file Tried in both my main project file, and a brand new one to reproduce the error(provided). Using the pointiness to mask out pointy objects, corners and such is brilliant! Works ...
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Why can't I add Geometry Nodes Modifier?

I was fallowing a tutorial where a guy adds Geometry Nodes Modifier to a curve. Tried to do it but I can't. "New" button is inactive. It works only when I convert the curve to a mesh but it ...
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3 votes
2 answers
118 views

Creating / deleting inset faces to make holes using geometry nodes

I can cut out different parts of a cube using Mesh Boolean Nodes and the Difference option using geometry nodes. see image below. But how can I Inset faces in a specific area using geometry nodes and ...
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how to create n items in geometry nodes

first of all: excuse my very bad english :-D i made a geometry node of a lego brick, but i stuck at the little pins on the top. i let create a cylinder at a specific position. but in order of how long ...
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Geometry nodes: How to compare two object's faces position and select the faces with equal positon

I have two Susanne objects A normal looking Susanne and One that at some part has distorted faces (see pic) How can I compare the position of the faces of the two Susanne's and then select the faces ...
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2 votes
1 answer
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How do I round off an extrusion edge?

I'm trying to create a part of a column from a church and I'm getting to the section where it is a torus shape, which then goes back to a straight column, here is where I got to with the part ...
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3 votes
2 answers
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Fillet like in 3ds max

In 3ds max you can turn this to this with Fillet button. In Blender there only bevel and it does not work anything like fillet in 3ds max. It looks more like cancer grow... Is there a way to make ...
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Why are the attribute nodes missing in the geometry node editor?

I've sculpted an object in Blender and wanted to play with the geo nodes and I'm very new to using geo nodes. In a few tutorials I followed there were some attribute nodes I couldnt find in the editor....
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2 answers
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Geometry Nodes: How to distribute instances on a mesh line to prevent crowding

I'm making a procedural stone path in geometry nodes but I've been struggling with correcting for distortions as the curves change. The issue I've been really stuck on is in the pictures below. As I ...
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Can you copy a Geometry Node with the inputs remaining the same?

I have an object with a Geometry Node modifier set up on it (it makes the object look damaged/chipped) but when I copy the modifiers to a different object using Ctrl+C it changes the input values ...
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Selecting vertices only visible in camera frustum

I want to select the vertices which are visible in camera frustum and delete the rest which are either occluded or not in camera frustum. I don't want to do it manually but with a python script. ...
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1 vote
1 answer
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Accumulate Specific editable shapes on Specific points on a mesh line with no gaps

I see lots of info on the accumulate geometry node when using random sized objects and aligning them tightly together. But I can't see to find any info on stacking specific objects that are put in ...
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how do I make seamless reflections on curved Geometry? (See picture)

How do I line up the reflections on this geometry so it is more seamless? As you can see in the picture it doesn't quite line up.
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geometry nodes: prevent instances from overlapping

I'm a beginner blender user, I'm trying to model this material: which gets volume after absorbing water: I started modeling a pile using nodes, but the resulted instances are overlapping, how to ...
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2 votes
1 answer
29 views

How do you apply two separate orders of rotation on geometry node instances?

I am trying to make a field of grass "blow in the wind." I have used random rotations to vary my grass clumps, but can't figure out a way to apply and set the rotation values so I can add ...
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1 answer
82 views

How to align the rotation of an instance to object normals?

I am having trouble with Geometry Nodes in Blender. Basically, I'm trying to create some cables that have additional instantiated objects at the ends. I want the rotation of these objects to be ...
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1 vote
1 answer
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How do I delete intersecting geometry?

I modelled a bunch of hair using Curves, and obviously, there's a lot of Vertices and Faces that I could go without, there's half a million Faces in the hair Mesh alone, and that's obviously too many ...
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3 votes
3 answers
213 views

How do I create a X mesh for my figure?

So I'm designing an Model and wan't an X for its mouth. I created them by alligning 2 Cylinders. The Problem now is that it looks exactly that. One Cylinder that was placed on the other.. How can I ...
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I am trying to get better aquainted with the "boxcutter/hardops" addons, and the bevel modifier is not working correctly

So basically I'm following this tutorial and at the 4:30 mark is where I'm currently stuck. The first problem: the person clicks on a "hardened normals" box, but since this video is old I'm ...
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1 vote
0 answers
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Bezier curve geometry selecting same object - Creating 2 different pipe sizes [duplicate]

Would be so grateful if someone can help me here. I am trying to create a pipes along bezier curves, and eventually (after i get over this hurdle) create different thicknesses along the pipes. But ...
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3 votes
1 answer
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Create petals for cylinder flower in Geometry Nodes (3.1) (question 2)

question continued from first post #2 I want to spawn a "petal" on each of the centre/heart's faces. As you can see, in this instance, the heart is a 6 sided cylinder with no fill, and so ...
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2 votes
1 answer
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Create petals for cylinder flower in Geometry Nodes (3.1) (question 1)

I've been following a tutorial by Kaizen I managed to get it to work the way he does it which is fine. Then I tried to apply it from the ground up step by step but doing it in a different way. This is ...
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1 vote
1 answer
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How to create this brownie texture on geometry nodes?

I just wanted to know if there's a way to create this type of texture and make it look realistic? any feedback or direction I should head to? thanks!
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6 votes
1 answer
168 views

Easiest way to fit a whole ColorRamp to a single face?

Anyone know how to texture a single plane so that a given Color Ramp progression lines up exactly with its width? I'm trying to make a visual guide for a driver controller to a procedural texture- ...
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2 votes
1 answer
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Geometry nodes vectors to panel

I'm wondering how to get geometry nodes vectors to work properly. I'm using code like this ...
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1 vote
1 answer
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sharp edges on imported geometry

I'm getting some strange sharp edges on imported models when viewing the material. Things I've tried: normals are facing the correct way shade smooth is on clean up/ merge vertices no sharps/seams ...
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4 votes
1 answer
148 views

Can I export a geometry node animation to an fbx in 3.1?

I did a deep search and discovered exporting a geometry node animation was not possible in the last version, was this added in 3.1? I haven't been able to get it to work if it has been added.
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3 votes
1 answer
84 views

Is it possible to scatter points inside of an object?

Inside of Houdini it is possible to distribute points inside of an object by first converting it to a volume object then scattering points inside of it, is it possible to achieve this within geometry ...
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8 votes
2 answers
271 views

Geometry Nodes Street Generator: How to rotate street parts accordingly?

i'm trying to create a street generator which positions the right street part's relative to the count of the vertex neighbours. I got it more or less working for every important part: normal streets, ...
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1 vote
0 answers
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Work out if vertices can be "naturally" connected

Given two vertices that are a part of one face, work out if they can be connected without creating weird geometry. Example of vertices that can be naturally connected: Example of vertices that cannot ...
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1 answer
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Geometry suddenly got merged together like Union effect in my Object

Please help i don't know what i did. why all of my geometric shapes got unioned together at some point in time. I used to be able to select each shape (cube, sphere, cylinder, etc) with "L" ...
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3 votes
1 answer
83 views

Geometry nodes align and randomize (Blender 3.1)

basically i realized this: I built a mesh I distributed an object along a curve and randomized scale and rotation I then distributed the above result along a rectangular curve my problem is: how ...
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1 vote
1 answer
46 views

How to shade geonode-animated mesh with mid-graph location attribute?

Using geometry nodes, I set up hexagons to move up and down in a sine wave pattern as the scene moves through time. Then, I added noise as an offset, to vary the hexagons' height as they move up and ...
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bone twisting hand to forearm geometry too much

I have a classic case of the twist wrist and I found a tutorial to fix it quickly without using shape keys but its not really doing an acceptable job. can anybody tell me how to do it with shape keys (...
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1 answer
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Geometry Nodes instance child objects?

In Geometry Modes (Blender 3), when instancing objects. How can I also instance their child objects too?
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Multiple objects array in Geometry Nodes? [duplicate]

I'm trying to make a multiple objects array in geonodes. The objects have a different "x length". I need them concatenated without gaps. Could someone help me? This is what I have: The ....
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Physics Domain Box in Box

Working with the Physics sim, I noticed a small box in the corner of my DOMAIN. What is that small box? How do I MOVE it to center mass?
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I have a problem in the mesh geometry, when sculping the mesh

When I sculp the mesh I have a holes in geometry and I can fill It just be bigger.How to fix It? and how to avoid this problem.And thanks in advace. Picture of the problem:
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2 votes
2 answers
51 views

How do I set the X,Y or Z value of multiple vertices to be the same value

I have model with what should be a completely flat base that I want to 3D print. It has "many" vertices on the bottom. They look level, but there are slight variations in about 60% of them, ...
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1 vote
0 answers
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Exporting with .fbx does weird stuff for me

I've been racking my brain and searching the internet, but maybe someone here can help me out! I have this object that has an image texture on it. And when I export it to FBX (with copy and embed ...
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1 vote
0 answers
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Integration of the shape formula into a shader

I want to create a shader with a pattern from a repeating vector shape. I have derived the math formula for this shape and now I want the vector to be output from the formula with randomly generated ...
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0 votes
1 answer
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Vector output from instance on points

I need some help with the following problem. I want to create a rope between two points. This works perfect when I use two objects. I want a static end point (Empty) and a point on a mesh as start ...
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