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Questions tagged [geometry-nodes-fields]

Fields are a feature of Geometry Nodes added in Blender 3.0, "a function: a set of instructions that can transform an arbitrary number of inputs into a single output". Fields make 3.0 Geometry nodes very different than 2.93's version. Use this tag for questions related to the use of fields in Geometry Nodes

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Geometry Node : Grid rolling transition

I Want to achieve a geometry node setup where my grid can be rolled and transitioned to a planer shape. Kind of like this picture.
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2 votes
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Distribute points on grid geometry nodes

I'd like to do something like on picture windows are distributed on face height and length also on angled faces. Any ideas ???
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1 answer
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Geometry Node : Rotate Instance on Bezier curve according to Tilt in edit mode

I want to rotate the instances on a bezier curve according to the tilt on the point of the curve. We can set the tilt using ctrl +t in edit mode. The below image is achievable using array modifier ...
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Geometry to Instance node is missing in my geometry nodes in Blender 3.1.2

Geometry to Instance node is missing in my geometry nodes. When i open a new file i'm able to see it but can't find with the file i'm working with.Help
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1 vote
1 answer
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How can I rotate boxes around an offset center?

I try to reproduce this animation of horikawa.j with Geometry Nodes, which I discovered on Instagram. The original creator says that this was solved with ...
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rigging in combination with GN

I want to control my IK target (cube) with GN. Unfortunately if i move my cube by GN the rig won't move with it. If i move the cube manually, it works, the rig moves with it. Looks like i am still too ...
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Using geometry nodes and mesh primitives

Having discovered geometry nodes, I am experimenting with procedural modelling. I am trying to build simple object that is a set of stacked cylinders. Can I use Transfer Attribute or Attribute ...
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6 votes
1 answer
249 views

Using math nodes to create geometry in geometry nodes

Using math nodes to create geometry in geometry nodes I'm trying to create some geometry using math nodes in geometry nodes see image below of what I'm trying to create. Yes I know I could model a ...
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2 answers
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How can I have the so-called 'shape key' AND the vertex color to change synchronously in this Geometry Nodes situation

I have this but I can't make the vertex color that affects the material to change like: Ball = Green Cube = Pink How can it be done?
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3 votes
2 answers
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Geometrynodes Curve Intersections

I need to get the location where two curves intersect with geometry nodes
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6 votes
3 answers
340 views

Geometry node - instantiating a cube only in the middle of another geometry edge

I would like to instantiate a cube in the middle of an edge of an ico sphere. I'm thinking about converting to a curve, subdividing it and then make a mask between the primitive sphere and the ...
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1 vote
1 answer
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I selected "curve A" as the bevel object of "curve B", but changing the scale of curve A from geometry nodes doesn't affect the scale of curve B

These are the objects involved: I have set the BezierCircle curve as the bevel object for the Plane.001 curve. This is the node setup for the BezierCircle curve: The nodes were meant to scale the ...
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4 votes
1 answer
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Geometry Nodes: How to get Single Value at Index?

How to Get Single Value at Index? Filed at Index node not working, cos it is working with non-single values aka fields (thanx cap)
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Is there a way to reassign/change order of indices in Geometry Nodes?

If I understand it right, Accumulate Field node works in the order of indices. Is there a way to reassign/change order of indices in Geometry Nodes or change the order of field accumulation?
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3 votes
1 answer
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Is there a way to apply Convex Hull geometry node on disconnected meshes separately?

I have instances on points and some manipulations with them, so that the instance meshes are geometrically different. Is there a way to apply Convex Hull on each instance separately, or on realized ...
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4 votes
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Manipulating vertex groups of instances?

Is it currently possible? I can't find a way to (for example) move part of geometry (instanced using object info node) by using it's vertex groups. Connecting anything to "selection" socket ...
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4 votes
1 answer
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Selecting every n'th index between the numerical index ranges of b and c using modulo in geometry nodes

This question is similar to Selecting every n'th index using modulo in geometry nodes but with an added range option. I can select every n'th number thanks to Hulifier I'm trying to select every ...
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5 votes
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Selecting every n'th index using modulo in geometry nodes

How can I go about selecting every n'th index using modulo in geometry nodes. Example: I have an index range of 0-35 and would like to select every 9th index so I can place an icosphere on it, which ...
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5 votes
3 answers
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Find highest index value for each Mesh Island. Is it possible? Geometry Nodes

The title says it all. Let's say there are 3 mesh islands. I would like to create an attribute that captures the highest index vertex for each island. So if the first island is a triangle, 2nd a ...
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Geometry Nodes Fields - Semi Circle

Is it possible to create a semi-circle with Geometry Nodes? It's for a particle system, so a math based approach rather than a boolean approach would be ideal to keep the vert count/calculation time ...
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1 vote
1 answer
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How to properly orient instances along corner edges

I'm currently trying to create simple level geometry for a game I'm working on. I've seen people use cubes with extrusions and then overlay those meshes with bricks and tiles to quickly create ...
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is it possible to detect edges/curvature in blender geometry nodes?

Working on a non-destructive asset (roofing tiles) and I'm trying to use vertex colors to define edges (red vertex color) and curvature (green vertex color) There's meant to be an edge detect node in ...
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How to manipulate individual points of instanced curves?

I have a series of instanced curves. I need to place each end of them in an individual position. Please help.
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3 votes
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Very weird Normal behaviour

So here we have seemingly two identical squares. The left one was created as a plane and then rotated 90 degrees to stay upright. The right one was created by deleting 4 vertices of a simple cube. On ...
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How to prevent textures moving around tentacles created with geometry nodes?

So, I recreated this tutorial but animated the tentacles. It works nicely, but the textures are moving around during animation because there are no UV maps. I tried Capture Attributes of the curves ...
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How to capture the position attribute of a vertex connected with an edge to your starting vertex, with geometry nodes?

It was difficult to explain my issue with a simple title. So I'll try to do a better job here: Let's say you have a relatively complex solid piece of geometry with quads, tris and n-gones. And You use ...
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Create a gradient that aligns with the camera

I want to create a gradient that aligns with the camera so that everything behind the camera is black/null. If you can somehow manage to make it a cone, even better. But a simple horizontal gradient ...
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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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2 votes
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Reconstructing Missed Raycast Hit Positions using other Hit Positions?

My current raycasting conundrum involves a setup where I need to raycast project a grid over an arbitrary surface which I will later use to instance something on each face, and I need to reposition (...
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Selecting specific indexes for instances on points node - Geometry Nodes

Selecting specific indexes for instances on points node. I know a can use the Selection option on the Instances on Points node to choose the indexes to use, but how can I choose more than just two ...
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3 votes
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how to make objects point in the direction they are travelling With Geometry Nodes?

I would like the objects to face the direction they are moving in.
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2 votes
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Is there a way to use the current value of Accumulate Field as part of the input?

I'm almost positive that the answer is a pretty straightforward "no," but I was wondering if there was a way to use the total evaluated at the previous index as part of the input for the ...
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Geometry nodes can't access vertex group

I have one object with two geometry nodes setups. The First can access vertex groups and the second cannot. What is the reason? Please help.
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4 answers
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Help with math formula to maintain distance along the x-axis between an Outer cube and an inner cube of 0.88 while scaling

Help with math formula to maintain distance along the x-axis between an outer cube and an inner cube of 0.88 while scaling. ...
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1 vote
1 answer
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Get distance between two points on a curve in geometry nodes

Im trying to make a density thing in which I set a min value of distance between two instances and plug it in the selection of instance on points. Im working on a really simple ivy on which I want to ...
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How can I replicate this swirly smoke effect with geometry nodes?

I found this somewhere and would like to replicate it with geometry nodes: I'm getting close, but it looks like crap, still :( My nodes:
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3 votes
2 answers
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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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3 votes
1 answer
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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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3 votes
1 answer
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Translate objects along curve instances

I have a set of start positions and a set of end positions and I eventually want to connect the two by bezier curve. And then use this bezier curve as a path for a selection of objects. I can get a ...
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9 votes
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How can I make a parametric winch (or a roll of rope)

I have this so far: But how can I make it grow increasingly, like a winch would do? I tried 'Snap' math function everywhere but it doesn't really do much good. Nodes:
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4 votes
3 answers
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How can I use Geometry Proximity and blend between several meshes (that have the same vertex count)

This is continuation of this question, which was answered nicely. So, I can now make this happen: But I would like to be able to use Geometry Proximity to control the point where the trees are ...
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3 votes
1 answer
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Geometry Nodes - Create Object Between Two Separate Curves

I would like to create columns/rods between two curves generated in geometry nodes similar to this: I tried the raycast node based on this post but I can't get it to work since some of the nodes have ...
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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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4 votes
2 answers
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How to change of the color of instances placed around a sphere based on their location

I am new to blender and want to create a series of light sources that are scattered across a spherical mesh. I then want to animate the colors of the lights so that it looks like the colors are ...
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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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1 answer
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How to rename geometry main group inputs so they reflect in the dopesheet as well?

I am trying to figure out how to rename the properties in the dopesheet to match that of the main inputs of the main geometry group but there seems to be no user-friendly way to do this? Am i missing ...
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6 votes
1 answer
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How to randomly pick instanced instances in Geometry Nodes

I'm making a procedural building with geometry nodes where the walls are instanced on a generated profile from a grid and those instanced walls are being instanced vertically along a mesh line. While ...
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2 answers
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Mix two meshes' positions to produce one (like a shapekey) and randomize the factor randomly per instance

I can make this: But how can I duplicate these multiple times and randomize the opening and closing of the mouth per instance - If I put random-node to the mixRGB node's Factor, all the vertices get ...
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How to isolate or select the concave point of the sharp corners of a curve in Geometry nodes? [duplicate]

I'm trying to make a procedural building with geometry nodes. I've generated the shape with a grid and then taking away parts around the edge and then converted it to curve. I would like to distribute ...
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4 votes
3 answers
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How can I delay the Trim Curve happen in different times for each curve?

I have this: I would like to this but don't know how: Delay the curves to happen in different times per each curve from bottom to top To not have consistent amount of yellow dots per each curve, but ...
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