# 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.

153 questions
Filter by
Sorted by
Tagged with
91 votes
7 answers
190k views

### How to smooth shade an object while retaining hard edges?

I frequently come to the problem of having a mesh with parts I would like to render smooth and "hard" edges connecting them. How can I set the mesh to show the sharp edges but render everything else ...
• 3,604
15 votes
1 answer
29k views

### Loop-cut won't go all the way around

Alright so I've seen some postings about loop cuts and done some research. I am very new to blender and modeling overall. I am trying to loop cut this concrete barrier. Now I'm following a tutorial ...
• 337
25 votes
3 answers
33k views

### fluid in a glass

I am at beginner level. One of the projects I am doing is to create a glass with fluid. Like a glass of water or a glass of wine. Now I can find quite some tutorials on how to create the glass, but ...
9 votes
1 answer
5k views

### How to make a bevel on text

How can I make a bevel, like in the "Gibson," for my personal inscription? Is there an automatic method to do so?
5 votes
2 answers
3k views

### projection geometry example

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 ...
• 151
18 votes
8 answers
3k views

### How to find the number of loose parts with Blender's Python API?

I want to find out how many loose parts a mesh has using Python, i.e. write a function that takes a mesh object as an argument and returns an int. So far I haven't found a way to access this ...
• 283
8 votes
3 answers
4k views

### How to create a circular shaped grid, similar to a manhole cover

I’m trying to create a circular shaped grid, similar to the one in the pic. That’s my first attempt, created by arranging several cylinders with an Array modifier and then cutting the holes via the ...
• 825
8 votes
2 answers
1k views

### How can I make holes on a wrist strap?

beginner here. I'm currently modeling my wristwatch and I'm running into some issues making the holes in the strap. I attempted to use the boolean modifier with a cylinder to get the holes out, and ...
6 votes
1 answer
833 views

### Passing GeoNodes attribute to Shader frame offset

I am trying to pass a geometry nodes output attribute (an integer) to the shader editor to control the offset of an image sequence. I have succesfully done this to pass the attribute and change , ie: ...
7 votes
3 answers
991 views

### Create mesh from four curves (Loft)

I want to create a smooth mesh using four curves. I want to animate the curves so that it changes the mesh. Basically, I have the four curves(black lines) in the picture. Just want to cross link ...
• 113
19 votes
2 answers
18k views

### how to use BMesh to add verts, faces, and edges to existing geometry

I've puzzled about this for a while, but haven't found an answer I understood. This snippet below does add geometry (3 verts and a face) but it also generates an error, Does going to object mode make ...
• 39.4k
12 votes
4 answers
5k views

### How can I create a mathematically correct arc/circular segment?

Given 3 vertices, or a chord and height, how can I create a mathematically correct arc/circular segment with an even distribution of vertices while controlling for the number of vertices. I ...
• 1,191
10 votes
4 answers
11k views

### Is there a way to Inset in the opposite direction (not Outset)?

Is there an operation similar to inset that creates faces in the opposite direction? That is, instead of creating faces inwards, they create faces outwards? A normal inset operation: What I would ...
• 115
17 votes
3 answers
21k views

### What is the difference between a subdivision surface modifier and multiresolution modifier?

I'm currently modeling my game character in Blender (see below picture). What is the difference between a subdivision surface modifier and a multiresolution modifier? I know they smooth the surface ...
• 311
9 votes
3 answers
28k views

### Removing internal geometry before 3D printing

I am pretty new to Blender but I looked at some tutorials on how to build my own structure etc. I found one Youtube video at about 2:05 minutes, where they select all inner vertices with some clicks ...
• 213
33 votes
3 answers
27k views

### What is the simplest way to generate a dodecahedron?

I've been thinking of animating some dice and while most are easy to make, I'm having some trouble figuring out a way to generate a regular dodecahedron. I could hand build it but it would be ...
26 votes
2 answers
44k views

### Remove extra geometry from objects

Is there a tool or an easier way to remove unneeded geometry from objects? Mostly when using a "Displace" modifier, on many places there are flat surfaces where there is extra geometry on the mesh, ...
• 4,687
14 votes
3 answers
3k views

### Is there a way to calculate mean curvature of a triangular mesh?

So I've written a script which does this: Before: After: The code is: ...
• 191
6 votes
1 answer
1k views

### bpy: How do you find the corners of a camera frustum?

... by which I mean the vectors from a perspective camera's viewing point to the corners of the rendered rectangle, as displayed by the diagonal sides of a camera's rectangular pyramid in a 3D View. (...
• 73.9k
5 votes
3 answers
19k views

### Blender 3.0.0 - How to use a vertex group in geometry nodes?

Does anyone know a way I can utilize vertex groups to limit the instancing in v. 3.0.0 ? Here is a thread explaining nicely what I'm also trying to do. The thing is, 3.0.0 Beta apparently removed ...
• 91
3 votes
1 answer
213 views

### How to keep clean geometry, when beveling boolean cutouts

I want to model this gun: So I started to cut out the rough shapes from a cube (using the boolean modifier) Then I tried to clean up the geometry to be able to round the edges of the handguard. But ...
• 710
7 votes
2 answers
3k views

### Cycles Node to tell Distance from an Empty

I'm using Cycles to make a procedural texture on an object, wanting to use the distance from an Empty in part of the calculation. I will use several Empties, in fact. Which node can provide this ...
• 3,119
3 votes
1 answer
229 views

### How to texture a downloaded model made of stretched triangles?

I'm a beginner in blender. Trying to texture a 3d furniture model which was downloaded from the manufacturer site. Geometry is made of stretched triangles. This causes problems of stretched texture ...
• 35
3 votes
1 answer
2k views

### Tricky Curved Hardsurface, suggestions? (mandalorian helmet)

I'm stuck trying to figure out how to model this part of the mandolorian hemlet without sculpting. any help, tips, references is greatly appreciated!
2 votes
3 answers
2k views

### Two faces inside of each other sharing same 4 vertices, why and how to fix?

I've been learning hard surface modelling and after a while noticed that some polys of my mesh are darker than others. On closer inspection, it appears that each of these is somehow not a single face ...
• 131
2 votes
2 answers
1k views

### Check if the whole plane is being on a orthographic camera render (or get a proportion of the rendered plane)

Situation: On my scene, planes can be positioned anywhere and I should not move them - I move around only camera. After positioning a orthographic camera with a script, I am not sure if the whole ...
• 123
0 votes
1 answer
759 views

### Object Positions Reset On Blender Load

So I am attempting to make a modular environment in Blender, so I'm modeling many pieces in one scene to make sure they all match up properly before separating them out. However, whenever I restart ...
• 133
16 votes
3 answers
8k views

### How do I create a 10-sided die as one object?

What I'm looking to do is create a 10-sided die, specifically in the shape of a 'pentagonal trapezohedron', i.e., a polyhedron that has 10 kite shaped sides. With the following link I was able to ...
• 161
15 votes
3 answers
6k views

### How can I model Gothic style windows?

I'm trying to model some Gothic type architecture for a game. I'm more of a organic guy, so I have no idea how to go about modelling these shapes(reference image included). I'm more interested in 1,2,...
• 265
10 votes
1 answer
2k views

### Unwrapping head geometry similar to Epic's MetaHuman Characters?

I'd like to maximize the texture space for a game head model I'm working on. When following the classic approach on how to unwrap a head (adding a straight line from the back and splitting those seam ...
• 12.3k
9 votes
2 answers
10k views

### Create a mesh from image with transparency

Is there a way to create a flat mesh from an image that has transparency, so that the mesh matches shape and does not include the transparency in the geometry? I have tried converting my image in an ....
• 233
8 votes
2 answers
3k views

### What defines matching topology?

In a previous question it was shown that a mesh that was duplicated and deformed separately can be used to define a shape key in the original mesh. If the vertex count doesn't match then you get an ...
• 55.1k
8 votes
2 answers
5k views

### Creating clock cogs?

I want to build a clock and I need to generate the cogs and pinions. I have seen a great tutorial here, but I want to do something slightly different than fiddleware. For example I want to round the ...
8 votes
3 answers
40k views

### Is there an easy way to remove overlapping faces?

Is there an easy way to remove overlapping faces? In the example remove doubles doesn't work You might be able to do the following: A to select all faces. X > Only Faces. F to create faces, but ...
• 1,153
7 votes
1 answer
6k views

### Offset for Mesh?

With text, you have a really handy control called 'offset', which allows you to easily increase/decrease the size of your letters from their centres not by changing the shape proportionally but by ...
• 113
6 votes
1 answer
22k views

### Obtain position of point in geometry node

I have a mesh in which I have two vertices in a vertex group. I would like to create a line between those two points. For that, I have tried to add a Line node ...
• 319
6 votes
1 answer
5k views

### Setting the origin for each object to geometry

Blender 2.83 In python I can create all of the features that I want in my world, but when I go to the world, each thing has the same location data. I can click on each and click set origin to geometry,...
• 63
5 votes
1 answer
2k views

### How to get the final volume & area of all selected objects (ignoring some faces)?

The 3D print toolbox currently only outputs the volume/area of all faces. How can I get the volume of selected mesh objects, ignoring certain faces? Asking on behalf of a user who mailed me.
• 47k
4 votes
1 answer
1k views

### Hard surface modeling on cylinder

So, I want to add some details to cylinder and I've been struggling with this for awhile and can't find a proper way to do this. First method on the image is with autosmooth and this is basicly what ...
• 17.5k
3 votes
1 answer
1k views

### Subsurf Modifier artifacts

So I was messing with Subsurf modifier to create a certain sword and then some weird artifacts began to appear (cape-like). I've tried adjusting the Crease, but couldn't achive what I wanted. Basicly, ...
3 votes
1 answer
2k views

### Weird connecting lines with no edges/vertices

Anyone able to explain this and how to kill it? New to Blender. Not sure of any terminology otherwise I'd try to search for my own answer. I even tried ⎈ CtrlF to create new faces hoping to ...
• 31
2 votes
2 answers
7k views

### Which tool allows bending a mesh?

In the feature video of version 2.72 the mesh intersection tool is introduced. Which tool is used to bend the scaled and loop-cut cube here?
• 38.3k
2 votes
1 answer
820 views

### How to Shrinkwrap bunch of planes to a Sphere while maintaining the planes' dimensions?

This is what I'm trying to achieve: (notice that every plane object have the same dimension) And this is what I came with so far: The problem with this is that I need my planes to have four equal ...
• 43
2 votes
1 answer
1k views

### What's the most elegant way to cut shapes out of a mesh?

I'm trying to cut shapes out of a mesh, but I'm having trouble doing it, or at least doing it properly. I'm currently trying to model this flashlight: The part I'm specifically having trouble with ...
1 vote
1 answer
3k views

### Black Dotted line? [duplicate]

New to Blender what is this black dotted line indicating?. No other objects have it when i select them. I tried setting origin to 3d cursor but th eline is still there?.
• 107
1 vote
1 answer
3k views

### Importing models from AutoCAD to Blender

I am looking for a method to import my 3D models made in AutoCAD to Blender. I have tried .stl and .fbx import but both of these triangulate the mesh and also I have to do a lot of clean up work to ...
• 321
11 votes
2 answers
617 views

### Geometry Nodes - How to lookup a value from another geometry? (Index at Value) For Phyllotaxis

The long story short is that geometry A has a "accumulated area" attribute describing cumulative area covered by each consecutive point on a curve. Geometry B needs to copy the position of a ...
• 133
10 votes
4 answers
35k views

### Set origin to geometry center

I would like to center the origin on the geometry. How can I do that ? I've tried with 'Origin to Geometry' but it doesn't seems to work correctly. Indeed, on the screenshot, we can see the origin is ...
• 123
9 votes
3 answers
2k views

### Twisted Cylinder (Hyperboloid of one sheet)

I want to create a mesh like this: with a vertex on every edge-crossing so that every face is kite (nearly rhombus) shaped. The above image was created just by rotating the top of two cylinders in ...
• 1,174
8 votes
2 answers
1k views

### How to bridge edge loops with a twist of .5?

I'm trying to make a 3D model of a twist-cut torus, like this one: https://youtu.be/3_VydFQmtZ8?t=3m39s The current version of the model costs about \$50 in Shapeways. I'm trying to get that down by ...
• 181