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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Distribute instances on plane faces, and make Instances face the borders of the mesh using Geometry Nodes
I've been looking for a way to distribute instances on a mesh and align the rotation of each instance to the direction of the border it would be place at. For instance:
On this exemple, "A" ...
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2
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Geometry Nodes: What Does Capture Attribute Add to Geometry?
In the depicted geometry nodes setup, capture attribute is used with the "position" field added as input, in two nodes. I expect that this gives no new information to the geometry that is ...
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Reproduced a sound with Geometry Nodes
I've searched in Google, Youtube and within Blender's own Geometry Nodes, without success, if there was any Node to reproduce a sound.
Do you know if theres a way to do it?
Thanks :)
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Can not add new curve hairs on geo-node hair (3.5), Invalid surface UVs
I made geo-node curves from a mesh (mesh, convert to bezier curves, convert to geo-node curves) and I can't seem to add any new hairs on it in brush mode now that it's been converted.
New empty curves ...
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How to subdivide triangles into four triangles with Geometry Nodes?
I need to subdivide a mesh of equilateral triangles so that each triangle gets subdivided into four new equilateral triangles. I want to use Geometry Nodes because I want to set the subdivision level ...
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Check if lines are collinear with Geometry Nodes
I want to check if two connected lines are collinear. If yes then I want to place at the middle point an object. To give the collinearity a little bit of tolerance $±5°$ would be a nice addition.
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How to rotate the pivot axis from vertex group named attribute
From reading from here manage to rotate the axis but it is in the wrong end as you can see from the gif it's pivot is in the hand not in arm end....the geonode has a vertex group named attribute and ...
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Trying to calculate the dot product between two vectors, but result is always zero .What went wrong here?
I am trying to create a reveal animation by using a linear fallof.
To do so, I've instanced little cubes on the faces of my shoe model and have created two vectors : A-B between the empty A and empty ...
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Distribute Points on Face to Objects with Particle Properties
I'm trying to distribute the cylinder on the face of the icosphere that has some particle properties. When I tried to joint geometries, the particles properties disappeared. Can someone help me with ...
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2
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Limiting the number of "Instance on Points" in the Viewport
I'm having trouble with the unresponsive viewport due to the number of "Distributed Particles on Point" displayed by the geometry node setup. It displays the mesh ("foam particle" ...
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Why won't my geometry node setup rotate instances to normal?
I think has something to do with instance at points, but I need your help. You see the instances have no rotation currently. The mesh that has the curve modifier has normals that change along the ...
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Splitting object into multiple parts, performing operation on them, then joining them back using geometry nodes
I'm trying to split up objects into a certain number of parts, perform an operation on them, then join them back together again.
The reason for doing this is that on certain meshes doing this process ...
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Geometry Nodes: Get curve point count per spline
Is there a way to store an attribute which contains the number of points for each spline of a curve?
In the following exemple I have a curve object with multiple spline in it.
They have respectively 2,...
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Proximity Node with 'Expansion/Contamination' process [duplicate]
How to make a proximity shader that scales exponentially as something gets closer and closer?
The idea is when an object is close, the color ramp won't trigger, only when is almost there it start to ...
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How do you use geometry nodes to set position with vertex group?
How can I use a vertex group to set the end position of a bezier segment?
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How would you animate this (Video example)
I'm trying to animate this with meta-balls for a few days now. First i tried it with reguals spheres and cloth physics but i think the effect meta balls give is good enough.
My main issue is how do i ...
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The Geometry Node 'Vector rotate' doesn't keep the relative rotation of an object
When I add an object with the GN 'Object Info' and the option 'Relative' this one only just keep the location but not the rotation.
What am I doing wrong in my Geometry Nodes, the 'Vector Rotate' in ...
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Use Geometry Nodes to mirror the angle of incidence of a geometry towards a surface?
I'm trying to replicate the behavior of a light source being shot to a mirror using Geometry Nodes, so the angle of incidence and the angle o reflection are the same.
In my setup, I set the endpoint <...
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1
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Distance from every instance in a collection
I'm trying to make a graphical demonstration of how MeanShift works. I have 6 points in a collection, and a geometry node setup to apply a kernel based on the distance of these points from a plane ...
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Geometry Nodes GUI. How to avoid node boxes occluding?
I just lost 10 minutes because a colleague shared a geometry nodes graph, where they had hidden one node underneath the other in the node editor. I am talking just about the simple act of dragging a ...
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I'm trying to figure out my this node tree doesn't work. It's supposed revolve a curve
Before anyone suggests Revolve/Screw Modifier Using Geometry Nodes? I'm trying my own approach.
The idea that I would take a curve A that the user would draw and create a copy B by running it through ...
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Is equal tubing on scaled, non-realized instance curves possible?
By realizing these curve circle instances, I'm able to get equal tubing per instance.
Without realizing, the tubing is scaled proportionally to the scale of the instance.
I was just wondering if ...
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How to convert a point 's location to a vector [duplicate]
How can I convert a point's position to a vector which I can then use as the endpoint for an arc node?
I'm using the latest version of blender.
First time using Stack Exchange, so let me know if you ...
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2
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48
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blender geometry nodes increase angle along curve
I want to to do a 3 fingers grip with Geometry Nodes.
Every finger is a curve composed of 4 vertex.
With a variable of the group input named 'Angle' I need to increase the natural angle of each couple ...
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Why geometry node setup 2 doesn't work like setup 1?
Why geometry node setup 2 doesn't result in radial aligned cones like setup 1?
I am new to Blender geometry nodes and use Blender version 3.4.1 .
Setup 1:
Result of setup 1 (radial aligned cones on a ...
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43
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Persistent holes in mesh
I have an object, like a cube. I will move other meshes through it, or fire particles at it. I want theses things to pass through the object, leaving a hole where they went through without needing a ...
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1
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69
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Odd and Even in Geometry Nodes
I want to draw a line with cylinders. The problem is that I need all the odd cylinders rotated of 90º.
I'm looking for a geometry nodes function like odd/even, but I can't find it.
Any idea how to do ...
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93
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Geometry Nodes - a curve line between each pair of points at index and index + 1
I have a node setup as in the screen below. I try to create a curve line between every two instances (at index and index+1) given by the "Instance on points" node. When I try to do it for ...
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How can I prevent my grease pencil objects from overlapping light trails?
I'm using the Light Trails Addon by Specoolar in my scene but the grease pencil objects within the scene are always in front of the light trail. The trail is in front of the grease pencil object in 3D ...
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28
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Find mesh islands for transform(Geometry Nodes) [closed]
This nodes for smoothly transform one mesh into another. When moving vertex from mesh-1 position to the mesh-2 position, islands (and edge flow) are not consider. How to make the vertices pass only ...
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How to create Meshline according to each geometric edge vertices using GeometricNodes?
I'm using Blender 3.5 , trying to create an instance of MeshLine for each geometric edge and to set each Meshline instance end points according to the corresponding edge's end points.
I succeeded to ...
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Geometry Nodes - Create a random row of books which I have created previously
I have seven books that I have manually made, along with a small stash of books that I manually put together.
But I want to create multiple stacks of books with a random order of those seven books ...
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43
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Using a captured attribute in geometry nodes
I'm trying to change the thickness of a curve based on how far it is from initial point.
But, even if I capture that length and confirm in the viewer, it is still not usable.
Below, I used "...
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Need help recreating this node setup in the new node system [duplicate]
I'm following a tutorial on how to make a reveal effect using instanced points but the attribute vector node has been removed, I'm unsure of what it should be replaced with.
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63
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Morph Between Meshes - I have an errors with Geometry Nodes
I make the morphing effect based on this video tutorial: https://www.youtube.com/watch?v=pimbaEE9cjQ
Because the TRANSFER ATTRIBUTE was removed, I used SAMPLE INDEX instead. But the result has many ...
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Geometry nodes: get line's point global coordinates
Somebody, help me please.
I want to bend the curve at any point. So I separate it into two parts and than I try to rotate one around the point of separation. But I cannot get the correct coordinates ...
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Galactic Gas Pockets - Rendering Real Galaxy Supercomputer Simulations in Blender
Node noob calling node gurus.
This is the second part of a hobby background project (first part here) to my dissertation focus, aimed at using blender to render a galaxy generated on my university's ...
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Remove every nth Vertex with Geometry Nodes/Python
Node noob calling all node gurus.
I'm working with some simulated galaxy data at university and as an aside, I'm wondering if I can render it in Blender - however because it was legitimately simulated ...
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28
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adding image material to irregularly shaped plane
I would like to be able to add an image to an irregularly shaped plane.
I have an imported svg ...
transformed to geometry (plane)
an image ...
and I want to apply an image texture (preferably via ...
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39
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How to change the Object in Geometry Nodes with keyframes?
To put it simply, I need to change the Object in a specific frame. For example: in frame $0$ the object Info node is Sphere, but in frame $20$, the object Info node is Cube. How can I do it??
I am ...
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Increasing the size of a line between two vertices of two objects with the Geometry Nodes
I have a line between two vertices of two objects. I need to move one of them by a variable distance but always following the direction of the line.
I draw the line between the two vertices without ...
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Join multiple "Curve to Mesh" results into one singular connected mesh
I'm trying to build a tree generator using the "Shortest Edge Paths" Node. So far, I've gotten to the part where I have the tree as a union of curves where each curve goes from the root to a ...
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UV project in geometry nodes
I want to project UV coordinates of the instancer on its instances using geometry nodes. I get the rough idea but can't figure out node setup.
Each vertex on instances should have its own "UV ...
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Blender 3.5 Geometry node - How the [Clump Hair Curves] node uses the Original Guide curves?
I'm learning the GN hair node of B3.5 and I encountered a problem.
How does Clump Hair Curves use the original guide curves to generate clumps?
It always generates clumps based on Interpolate Hair ...
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2
answers
40
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Make material change colour based on Intersecting Geo node mesh
I followed this Tutorial on Geo nodes
https://www.youtube.com/watch?v=Uf_v3RE4F_Y
And have this set up
However I'd like to make these fleshy wires much more wet and icky. By having some stain like ...
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'Delete geometry' node not working as expected
I am trying to create a procedural terrain generator in blender. I have created three array modifiers and applied geometry nodes to the produced points.
When I set the threshold to 0.5 all of the ...
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47
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Moving a point of a line with Geometry Nodes
I have a line with a start and end point.
I need to move the initial point of a variable distance but always following the direction of the line.
If there any Node that allows you to do that easily?
...
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Field of mesh lines
I'm stumped to do the following project for a few days now and I would be grateful for any help :
Let's consider two series of points (blues and reds in the picture below).
I would like to connect ...
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How can I control the distribution of instances in geometric nodes with lights?
Such as distributing seedlings on objects illuminated by light.
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63
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How to apply random noise texture to instances?
What I had in mind was to use Geometry Nodes to take a sphere and apply a noise texture to distort the surface into an odd shape, then distribute that sphere as many instances on a surface. (...
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