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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92 votes
7 answers
194k 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 ...
miceterminator's user avatar
35 votes
2 answers
186k views

How to set object dimension

Is there a way to set absolute dimensions of an object. Once I've created a cylinder for example, how can I go back and change the length? I know I can scale it, but I want to set an absolute length ...
tsm's user avatar
  • 353
33 votes
3 answers
29k 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 ...
user avatar
27 votes
1 answer
1k views

Closing "Fibonacci's Hole"

Creating a sphere using the points defined by Spherical Fibonacci Mapping. For the most part it is easy to "skin" by using two consecutive fibonacci numbers as steps to loop on the index. And get ...
batFINGER's user avatar
  • 84.3k
26 votes
2 answers
46k 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, ...
Vladimir's user avatar
  • 4,695
25 votes
3 answers
34k 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 ...
user avatar
20 votes
2 answers
3k views

Placing 4 Circles on a sphere

I am wondering how I can create a sphere with 4 equally spaced, equally sized circles on a ball, similar to the circles in this image: I only request to know how the positions of these circles are ...
Julian Duehnen's user avatar
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 ...
zeffii's user avatar
  • 39.6k
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 ...
Tim Ayres's user avatar
  • 283
17 votes
3 answers
22k 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 ...
John H's user avatar
  • 311
16 votes
3 answers
9k 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 ...
Ghavian's user avatar
  • 161
15 votes
12 answers
4k views

What's the fastest/most fun/craziest way to make a flowerpot in Blender?

How would anyone deal with making a flowerpot, as it's useful while making interiors? You can use anything, but there are some limitations and rules: No externally installed addons/plugins are ...
Yousuf Chaudhry's user avatar
15 votes
3 answers
3k views

Is there a "Volume Select" equivalent in Blender?

3D Studio has a modifier called "Volume Select" that allows using an element's geometry as a sort of selection force field that influences elements in its path. It can be used to transform many at ...
user62099's user avatar
  • 153
15 votes
1 answer
31k 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 ...
CrazyGrunt's user avatar
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,...
Amol Borkar's user avatar
14 votes
3 answers
2k views

How to wrap paper around an object?

I'm new in Blender and I'm making a jar bottle to start and want to close the top wraping with paper like these ones: I tried using cloth modifier with a colision object + pressure but I can't find a ...
Tomas's user avatar
  • 151
14 votes
1 answer
19k views

Subdivide in only one direction? [duplicate]

Say I have the top mesh in the image. If I subdivide it, I'll have the second mesh in the image. But what I want is the third. It has vertical subdivisions, but not horizontal. Is there a way to do ...
Ascalon's user avatar
  • 6,589
14 votes
3 answers
42k views

Preserve UVs when modifying topology

First question here. I came from a 3DSMax background, since then I've succeeded to find pretty much everything I needed to make the switch from 3DSMax to Blender, except for this : there a very useful ...
J0hnD03's user avatar
  • 141
14 votes
3 answers
4k 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: ...
Mike's user avatar
  • 191
14 votes
1 answer
1k views

Creating a painterly effect using Geo Nodes

In short, I want to give a painterly look to my objects. A pretty big issue I've been hit with so far is how to assign the instanced objects to essentially show the material of the object they're on ...
Stephen Stark's user avatar
13 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 ...
BlenderBro's user avatar
  • 1,201
11 votes
2 answers
743 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 ...
Iloveplants's user avatar
10 votes
4 answers
36k 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 ...
user11342's user avatar
  • 123
10 votes
2 answers
657 views

Strombic Hexecontahedron from a dodecahedron

The purple is what I want, the grey is what I have. Somebody already helped me on the Blender Discord server, but if you can see, there is no "symmetry", as the pyramid orientation angles ...
jokoon's user avatar
  • 203
10 votes
5 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 ...
Stuart Hart's user avatar
10 votes
3 answers
29k 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 ...
drmariod's user avatar
  • 223
10 votes
1 answer
3k 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 ...
brockmann's user avatar
  • 12.6k
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 ...
quiliup's user avatar
  • 1,174
9 votes
2 answers
2k views

How to make a circular swipe?

I'm trying to make a video similar to this one (Made in Adobe After Effects) https://www.youtube.com/watch?v=YAV5DwR1pU8 But I don't know how to make the circle disappear than reappear with a circular ...
DragonHeart's user avatar
  • 1,524
9 votes
1 answer
3k views

How to connect a circle to a grid with even topology?

I'm trying to connect the pieces shown below together seamlessly, but I can't figure out the correct way to do it. I have tried a bit of everything, but nothing seems to give me the result I'm ...
Michael's user avatar
  • 93
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 ....
TrakJohnson's user avatar
9 votes
2 answers
14k views

How can I set the object origin for an armature?

After importing a .bvh file from Motion Capturing, the object appears translated and its origin isn't in the objects geometric center. I've tried several options from the Set Origin menu (Shift + Ctrl ...
stacker's user avatar
  • 38.5k
9 votes
4 answers
2k views

How do I model a 12 sided shape?

I want to make the shape shown in the images below, but I have a problem with the bottom side of it which I can't make. It is 12 sided and it is curved a little bit. Any ideas or ways to make it?
Najeb Albakar's user avatar
9 votes
2 answers
629 views

Geometry nodes maximum of two functions

I have created Geometry-Nodes which arranges the objects according to sine function. What I have achieved is this: What I want to achieve is something like this: My idea is that there will be two ...
CoolCoder's user avatar
  • 626
9 votes
1 answer
6k 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?
Nik Fiorentino's user avatar
9 votes
2 answers
4k views

Flip Normals with Geometry Nodes

I have geometry being created through geometry nodes and I am am trying to flip the normals on this duplicate geometry. However, it appears that normals are a read only attribute in the geometry nodes....
BenignBrett's user avatar
8 votes
2 answers
2k views

How to make flat surfaces look flat with smooth shading?

I've been working on a hard surface model and using smooth shading quite extensively. I also have auto smoothing enabled. The issue is that flat surfaces with complex geometry stop looking flat when I ...
Wojtek Wencel's user avatar
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 ...
Nigel Johnson's user avatar
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 ...
faybn's user avatar
  • 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 ...
Jonathan Blanchard's user avatar
8 votes
3 answers
41k 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 ...
xlxs's user avatar
  • 1,163
8 votes
1 answer
620 views

Quad-only topology at the edge of a chamfer

Is there a better way to recreate this shape using only quads? Thanks
Igor Svara's user avatar
8 votes
3 answers
3k views

How to find back-faces and delete them with python?

Is there a python code to find and delete back-faces? As a way to do "back-face culling".
oxtvy's user avatar
  • 123
8 votes
1 answer
2k views

Adding Labels, Angles, Domains on Objects for Making Math Models

I am very new to Blender. I have been looking for a program to create a model for visualizing different math concepts. Blender looks promising as it provides the possibility for not only this, but ...
chase's user avatar
  • 638
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 ...
sambler's user avatar
  • 55.4k
8 votes
1 answer
2k views

Is there a way to create a dual mesh using geometry nodes?

I'm trying to create a dual mesh, as described by Alessandro Zomparelly, but procedurally using Geometry Nodes. I've only come this far, but now I need to dissolve the vertices of the original mesh, ...
wout's user avatar
  • 1,186
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 ...
Lupilum's user avatar
  • 181
7 votes
3 answers
1k 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 ...
alibaba_0000's user avatar
7 votes
5 answers
8k views

How to set the origin of a procedurally created mesh in Geometry Nodes?

In blender 3.0, I made a wire-like mesh using Mesh Line. So, the geometries default origin is the beginning of the mesh line which later, causes problems. I wondered if there's a way to set the ...
Barbod M's user avatar
  • 570
7 votes
3 answers
2k views

Transform letters by their instances in geo nodes

I'm doing text animation in geometric nodes. I'm trying to animate the letters around their center, but all the transforms are only applied relative to the bottom left corner. Is it possible to do ...
Kogoduos's user avatar
  • 125

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