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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Random Scale of UV Spheres radius using "Instances on points" Origins are off!

I have a a whole bunch of spheres generated on a curve, I want to randomise the radius of the spheres as well as their positions in order to get a galaxy effect. The issue I am running into is that ...
0 votes
1 answer
33 views

Get geometry position

maybe this is a noob question, but I just cannot find an answer anywhere. All I want to do is get the position of a geometry, because I need to generate a curve line with the starting point ...
-2 votes
0 answers
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How do you make the geometry node emitter invisible in blender? [closed]

I am working on a project right now where I am using a duplicate of the roof to spread leaf geometry, but I want to make the emitter not visible and not rendered. I've used a transparent BDSF material ...
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Python exercise to learn - spiral circular shape

I’m trying to use bmesh extrusion and Matrix to do some spiral shape like this : I would like to start from a circle (like it is described on the picture) Here where I’m stuck: ...
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Creating a cut on an object with circular outer edges

Please refer to the images. I extruded these edges along normals, then made it so that the new faces intersected with parts of the same object. I would like to create a cut where the intersection is ...
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0 answers
31 views

how can i make tiling with a dent in the gap?

I'm recreating colleage building in blender and i'm having trouble making material for metalic tiled wall like this. (sorry for bad resolution) I tried using brick texture node and displacement to ...
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1 answer
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Array along curve modifier in geometry nodes, but with mesh input

Hi I want to array an object along a curve with geometry nodes, but I need to use a mesh as an input because I need to apply the modifier, which cannot be done with a curve as an input. I tried to ...
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48 views

Multiple simulation zone bug in geometry nodes?

Simple case. I've a scene with a complex geometry nodes on a mesh but i simplified it for the post. Goal I need to use 2 simulation zones in my geometry node modifier but... Problem ...the last ...
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0 answers
39 views

Define custom Spline Index OR Rebuild Sample Curve Node

Is there a way to set a splines index or otherwise store an attribute on a spline that can be read as 'curve index' in the 'Sample Curve Node'? I'm asking because i have a setup where meshlines are ...
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1 answer
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Set origin to 3d cursor(3d cursor became the origin)

I was want to change the origin to where the cursor is, I did from Object>Set origin>Origin to 3D[enter image description cursor. But after that, The 3D became the origin and I can't change from ...
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1 answer
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How to randomly rotate all the beads in a necklace along the Z axis with geometric nodes

How to randomly rotate all the beads in a necklace along the Z axis with Geometry Nodes.
1 vote
1 answer
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Creating a Rhombohedron

I'm working on a hobby creating mineral crystals in Blender 4.0 that have specific face angles. I'm stuck on trying to create a Rhombohedral geometry for a calcite crystal. The Rhombohedron is ...
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Importing a GeoJSON file

I have this GeoJSON file which I'd like to import into Blender 4.1.0 (Ubuntu 22.04.4): ...
1 vote
3 answers
74 views

Taper a geonodes curve to center of curve & adjustable via group input?

I've created and resampled a curve and want to smoothly taper it to the center. I'm able to do exactly what I need using the spline parameter node and a float curve, but the problem is that I'm unable ...
2 votes
1 answer
80 views

Generate Rig from vertecies

I am looking for a way to automate this setup: Basically, i want to generate a armature with bones for every vertex of a selected mesh. Ideally, the bones should point in the vertex's normal ...
0 votes
2 answers
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Create volume cube around object with equal padding from bounding box center?

I want to create a volume cube around an object with equal padding from the center of the bounding box of the object. Ideally, this would be a single value input (ie. "padding amount"). The ...
1 vote
2 answers
151 views

How to rotate individual instances in GN based on the value in Edit Mode?

I'm looking for a way to rotate individual instances in GN with a collection of multiple objects and access each instance to have more control over rotations while maintaining the procedural dimension ...
2 votes
1 answer
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How to Create Pointy Oval Shape?

I have a main character which has this pointy oval shaped Right now I am having a lot of trouble to create the eye and body shape I just can't figure any way to do it and after searching. I came here ...
1 vote
1 answer
443 views

Load textures dynamically with LOD

I have setup a geometry nodes that lets me subdivide a plane based on camera distance, so as I get near it, I subdivide the vertices within the camera cull. At the same time, I use a texture to ...
0 votes
1 answer
39 views

Blender 4.0 geo nodes: Bezier curve with 5 vertices subdivide only top 2 and bottom 2

how can i make in blender geo nodes the bezier curve only subdivide inbetween the top 2 vertices and the bottom ones, while the one vertice in the middle is unsubdivided? Appreciate any reply
2 votes
1 answer
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How to read the value through Python from Geometry Nodes Output Node

When the socket is not connected to other nodes, the script can be read into its variable. Everything is fine. ...
1 vote
1 answer
789 views

Pointiness for edge mask doesn't work at all

I'm trying to use the pointiness techniques to find the edges of my models, but I can't get it to work. I've tried googling, watching tutorials, but nothing has worked. I'm on 2.91, using Cycles with ...
0 votes
1 answer
346 views

Loop cut tool only select vertices (Blender)

I have the problem, that i can't create loop cuts on this specific face of the shape. I need a vertical loop cut there. In loop cut blender just selects one of the vertices. On every edge i try it it ...
2 votes
1 answer
2k views

Geometry Nodes - Point Cloud from custom XYZ coordinates?

I'd like to create a point cloud using the Geometry Node Editor based on my own custom data. The data is stored in a .txt file, plain [x,y,z] coordinates and looks like this: ...
0 votes
1 answer
41 views

Kinetic Rigging Question (Theo Jansen Style)

I'm trying to make kinetic mechanism, like link below. https://www.youtube.com/watch?si=Hn93VdvYxKf5NsK_&v=NM4q-f68TlY&feature=youtu.be Added armatures and IK constraints to the points that ...
5 votes
2 answers
155 views

Procedural extrusion from an object

I am trying to find a way to create procedural extrusions of an object. Assume our base object is a manifold object with a curved surface, such as a sphere (Fig 1). I would like to use a Curve object ...
0 votes
0 answers
41 views

What is the correct way to make the turbine blade geometry? What tools to use?

What's the best way to make a blade? I tried to come up with something with curves, but it turned out very poorly. Src: https://thearchimedes.com/images/pdf/AWM%20brochure%20Respect%202023%20HQ%...
1 vote
2 answers
47 views

Unfolding a 3d object into a 2d plane

I got the following 3d model of an exhaust pipe: The model consists of multiple cylinders and flat cones. I want to print out the cutting shape of those and therefore need to "unfold" the ...
3 votes
1 answer
43 views

My mesh would completely break when i move the bones

I'm quite new to blender as i made this little electronic hand on my own with only 2 days of experience. but the problem is that when I went to rig it to make it animate it just wouldn't work. the ...
0 votes
1 answer
39 views

Is there a better way to merge these vertices other than manually doing one pair at a time?

Update: Sorry there was a mistake I didn’t notice that the planes on both sides weren’t at the same position on the Y axis (been in ortho view the entire time). I have since moved them to the same ...
0 votes
1 answer
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How can I make this toothed gear wheel? [duplicate]

This is part of something I'm doing, a mechanical part resembling a gear wheel with a great many teeth. All I can think of is to make one tooth, then use the Array Modifier to do a radial symmetry of ...
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0 answers
15 views

Extruding two objects the exact same amount but the results are different [duplicate]

Please see the images. I extruded two planes each exactly 1 metre along local Z (mannually typed in -1 in the panel), but the resulting extrusion amounts are very different Both planes before ...
0 votes
1 answer
562 views

Shading issues showing in rendered Cycles viewport but not in solid viewport

For some reason when I render the object in viewport 3D Render I see these lines that look like weird shading or geometry. But I have fixed this in the Solid Viewport where they don't show up. Also I ...
0 votes
2 answers
314 views

Anyway To Material Paint This Complex Geometry?

So what I want to do is material paint this middle part for a diffrent look, but the geometry is very complex, and I want to make it circular, and able to change in keyframes, so that way I can ...
5 votes
2 answers
4k views

How can I view the perspective projection of an arbitraryy shape onto the plane below?

I just can't find the Blender way to do this. I have two objects (cubes) at a given height above a plane. These two cubes are 5cm apart, say. How can I view the perspective projection of these cubes ...
0 votes
1 answer
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Can I subdivide a mesh nonuniformly until a maximum face area is achieved?

I want a sphere which I can model a planet on. I want any given area to have roughly the same resolution. A UV sphere concentrates geometry at the poles. My first solution was clunky and problematic. ...
1 vote
1 answer
17 views

How to select geometry and remove it with slope mask?

Program: Blender 2.9.2-4.0 Geometry and mask created in Gaea I'm facing a problem, I don't understand how I can select vertices for further deletion, ONLY those in the white area? My goal, by any ...
2 votes
2 answers
88 views

geo node: Specify index freely

I don't know how to specify the index like in this image. When using mesh island node, an unintended index is assigned. I ultimately want to control this tooth mesh along a curve using an instance on ...
5 votes
2 answers
453 views

How to model a spherical snowflake?

Hello everyone, I've been trying to model this shape in blender, I tried bending planes, projecting curves on the surfaces but still couldn't get the perfect result. Is it possible to project this ...
3 votes
1 answer
647 views

Separate distinct internal closed volume (automated)

I have an object containing multiple interior faces defining closed volumes. I'm looking for a way to identify each of those volume and separate them in different objects. The object is in "one ...
1 vote
1 answer
36 views

How to use float curve node to flatten geometry from two sides rather than all four sides in geometry nodes

I am trying to show this vein being compressed from only two sides so it "pancakes" and flattens out rather than compresses circularly from all sides. As of right now I have two float curve ...
1 vote
1 answer
48 views

How can I insert a custom implicit equation in blender, draw its associated 2D curve and then create a revolution solid out of it?

I want to write down a parametric equation for a curve and then create a solid out of it. I would like to know the procedure (the pipeline/workflow) on how to do this. Let me explain. I have an ...
1 vote
1 answer
43 views

Trying to simulate keyframing with geometry nodes to produce a repeating animation

I am working on a project to show a vein being compressed, pinching off blood flow, and then decompressing. I am using Ryo Mizuta's procedural blood vessel project (https://youtu.be/whh1QblAGEo?si=...
4 votes
1 answer
137 views

How to select a boundary edge and generate an outline

I'm looking for two features in Geometry Node: Is there a way to select edges and convert them into a curve/solid outline Is there a way to specifically select edges that are on the border, as in ...
1 vote
2 answers
63 views

How to change the size of points in the geometry nodes?

I am new to blender. Currently, I am trying to make a donut and I am stuck with making the sprinkles. My points in geometry nodes are too big, how do I change the size of them?
0 votes
1 answer
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Carve geometry according to alpha

The thing I want is to carve out pieces of a mesh based on an alpha texture. It's not a noise texture, it's a specific alpha texture I have that is UV mapped, and I want to delete the parts of the ...
3 votes
1 answer
106 views

Geo Nodes: Delete Animated Instances Permanently

I'm trying to make pacman eat these balls permanently. I set up a simulation zone as you can see below to try to make the delete geometry permanent. That works but gives me two new issues: The ...
1 vote
1 answer
28 views

Adding windows to faces of complex geometry

Is there a faster and cleaner way to add windows to a complex mesh with angles? I'm trying to re-create a modern building Whilst I'm able to recreate the geometry I'm struggling to find a way to '...
0 votes
1 answer
269 views

Blender Face Weigted Normals using manual face selection sets

I have been using a super powerful script in maya created by Etienne Nadeau called the Normal Toolkit. Basically it allows you to pick out your chamfers manually and run the script on your mesh to ...
0 votes
1 answer
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How do I make these radially symmetrical edges longer?

Please refer to the screenshot. It's the shape of a gearwheel in front ortho, currently just a circle to be extruded later. I would like for these to be as wide as indicated in the concept image in ...

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