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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Can't Import .STL Files When in Binary Format

I keep running into a problem when dealing with some .stl files which are generated in binary format (There is no other option for the export setting on this digital 3D microscope). When I choose to ...
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3answers
68 views

Adding an edge loop to a pyramid

I have created a pyramid by adding a cube, then selecting the 4 upper vertices and clicking Alt + m, then "To Center": I would not like to make the sharp top "dull". There should not be a sharp end ...
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Multiplying mesh multiple times in Blender

I'm trying to create a mesh in the shape of acoustic foam. This foam is used to cancel out echoes and is also used in transportation: To create such a material, I add a cube, then I select the upper ...
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2answers
27 views

Create missing point of a rectangle from right-angled triangle

Assume you have 3 connected vertices, which form a right-angled triangle. Is there any easy way to fill in the 4th point to make it a square? I usually copy the corresponding coordinates, when the ...
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10 views

Text with no geometry in the Blender Game Engine?

I try to make an ASCII-Game with the BGE so I try to build all the levels with Text-Objects. The problem is that all the text objects will slow down the game because of their geometry. Is it possible ...
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2answers
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Smooth icon, left bar 2.8. Doesn´t work like 2.7

Iam getting back to blender after some years (I was just modelling ocasionally for simple figures, getting back again). I used to use "smooth vertex" on 2.7 to make cleaner and flatter faces on the ...
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13 views

How can I get values based on the thickness of an object relative to the camera?

I'm trying to make a material that resembles some kind of liquid; it is opaque where it is thick and transparent where it is thin. I'm planning on mixing a diffuse and glass shader with presumably a ...
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2answers
50 views

Why does adding a bevel mess up a hole?

I've been trying different ways to have a beveled edge on this little box and have a hole cut out of it. I've cut the hole by deleting an existing face created with edge loops, Projecting the Knife, ...
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44 views

Way(s) to remove unnecessary Geometry?

I've got a problem while modelling my Anvil - after boolean I have a lot of geometry all over the mesh that I don't want. For example - there are a lot of squares in areas that are entirely flat, but ...
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2answers
25 views

Can an object be automatically rotated?

I have a pistol model whose rotation is a few degrees off: Does Blender have a function that would automatically fix the rotation and "align" it according to the object's geometry, perhaps like the ...
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11 views

Is there a way to link Revit to Blender “Live”

Is there a way to link Revit models into Blender with a live link? For example, I'd like to edit materials in Blender, create a scene and add meshes to fill the scene; and inside Revit, if I need to ...
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33 views

What are these handles?

I have downloaded an fbx file. When I import it into Blender, it shows some handles. Can somebody tell me what these handles are and what they're used for? Thank you!
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Getting the exception access violation upon importing a fbx file

I am getting the access violation exception while import geometry(fbx format) via python. ...
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2answers
87 views

How do I correctly reduce geometry on part of a mesh?

Good afternoon, I already know that there are easy ways for reducing face count for the entire model. However I am trying to find a way to reduce faces only on specific parts of my mesh while keeping ...
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When rendering (4090x2900 px), my cloth has bad geometry

let me put the image first. The problem I got is that my cloth has a bad geometry when rendering (It's the object vertical in the center of the render that is overlapping other objects.), but in 3D ...
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21 views

Try to use Intersect to cut a cube by a surface

I tried to cut a cube with a surface generated by simulation. The surface contains a huge amount of meshes. When I first merge the surface and the cube using ctrl+j, then use intersect(knife) to cut ...
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11 views

merge and create convex full on every frame

I'm attempting to visualize a form of 3d printing using blender. I was hoping to use a primative such as a sphere and just overlap them, but this causes some strange highlights, shadows and dimpling ...
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27 views

Delete internal geometry for bezier curve converted to mesh

I have a bezier curve that I converted to a mesh. It has overlapping faces and internal geometry because of the extruding I did. I tried to create cuts at the overlapping faces with intersect ...
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1answer
57 views

How do i make a gaping hole?

I'm trying to simulate something being stabbed and the sword leaving a gaping hole But i don't want to change the geometry of the actual thing, I wanted to try and use a transparent plane, so how ...
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24 views

Compute density fluctuations of particle distribution of a surface of 3D geometry

I am using Cellblender to model bio molecular reactions within a 3D geometry that I created, but I am still a novice in Blender. As part of these simulations a fixed number of particles (my case N=60, ...
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39 views

How to make a spiral torus?

How to make a spiral torus as shown below? I do know how to make various spirals in Blender, but this one escapes me and makes my head spin (forgive the pun). I believe it consists of several torus ...
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42 views

Are there really so many triangles in this model?

I have uploaded a blend file here. It's the model of an RPG: Blender says that the model has 30940 triangles. From looking at the mesh in Edit mode, it doesn't look ilke 30k tris to me. Rather 4k ...
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1answer
28 views

Where are the many tris located in this model?

I have downloaded a Blender model which I like very much. This model seems to have a really wise geometry, there are not more triangles than necessary. I can judge by switching to Edit mode and ...
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1answer
16 views

Moving in a straight line

For testing purposes, I have selected a face of a cube. Then I dragged the face down using the green arrow. It seems to have worked fine at first. However, when I then rotate the view, I can see that ...
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2answers
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How can I quickly make two normals opposites?

The best way I can really explain this is, in a 2D space, two lines are parallel when you can draw a perpendicular line between both of them. In a 3D space, if you have two surfaces that are facing ...
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1answer
24 views

Is there a way to export an object without all of it's inside geometry?

For example: If I had a cube and hidden inside it's bounds there was another, smaller cube and I joined/merged/combined them into one object, is there any specific action I can do to make the ...
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2answers
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What causes these black streaks along certain (concave?) edges?

I have a model with an open mesh terrain surface and some closed building meshes – when rendering in Cycles I'm seeing black streaks along some mesh edges. On the building models it seems to be ...
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Object Location / apply doing funny things

I set my camera rig (created following this Answer) to follow a path, and it’s keeping station some distance away with a faint dotted line pointing to the position on the path where I expect it to be. ...
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0answers
18 views

Modifier: Remeshing with blocks. What's the algorithm?

In Blender there is a function representing your object with cubes (where you can find it: see attachment). This makes the object look like Minecraft style (see attachment). This "Minecraft style" is ...
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2answers
143 views

Beveled cylinder cutout

Despite being more proficient in Blender than last time, I'm still struggling with round shapes. Currently I'm working on a small part of a model - a fluid intake. However, I can't seem to create a ...
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20 views

What do you call modeling complex geometry using very minimal cages?

I've seen artist using incredibly complex geometry using strategically placed cages with subdivision surfaces applied. What do you call the technique used to modeling complex geometry using very ...
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32 views

Convert/assemble multiple VRML objects to one object

first of all: I am from Germany and my English is not the best. I am working with blender to visualize different objects in different file formats. The reason of this is my research with voxel ...
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15 views

access point/vertex/prim(poly)/detail attributes inside of blender

How to make use of attributes created in Houdini inside of Blender. For things like particle system density, length, color, geometry to scatter etc.
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34 views

How do I get rid of ugly creases from loop cuts?

So I'm creating a spider in Blender and after adding a material to my mesh, I noticed in render mode that there was an ugly crease torwards the head (highlighted in yellow in edit mode). I did not ...
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1answer
39 views

How can I use Mesh as a Tile on Geometry?

I am currently developing a scene and some assets to work with. I'm not using any UV mapping or texturing as I'm going for an old polygonal 90's look. I have a 'Grass' mesh that I want to use as a ...
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19 views

How to close/fill an incomplete-surface with a closed loop

I am trying close of this surface with a flat plane. The issue is that the ends are incomplete making it impossible to use a single tool. I believe I am in need of a compound of tools. Thanks for the ...
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2answers
162 views

What's the easiest way to draw the outline of a floor plan in Blender?

This is so easy to do in other applications but very new to Blender and haven't been able to figure out the right words to search for to find this exact information. If I needed to draw this plane ...
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2answers
192 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 ...
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1answer
44 views

Is there a better method to add uniform thickness to a curve pattern that has been converted into a mesh?

I have the following mesh with no thickness or faces: I wish to be able to apply a uniform thickness along with clean geometry without creating too many vertices. The solidify modifier isn't getting ...
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1answer
69 views

Solidify non manifold (non contiguos)

I tried to solidify a poligon extrusion, but it seems to be more complex than expected. After solidification some edges seems to cross each others, but I believe this should be a real common result ...
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19 views

Are there any methods for automating a height map OR cleaning up geometry after a displace modifier

Question 1 (Using the displace modifier): Is there a method, modifier or addon to clean up geometry after using a subsurf + displace modifier, proceeded by a planar decimate modifier without having ...
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2answers
124 views

How to improve topology around an E-pole?

I'm trying to find a way to make the area around the E-pole less stretched (marked in blue on the pics below) while keeping the mesh geometry as clean as possible. Is there any solution or method I ...
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24 views

UV coordinate from ray_cast?

I want to get the UV coordinate of a point on the surface of an object. I want to automatically generate new textures for many objects based on code I have written. I was thinking I would call the ...
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1answer
81 views

How can I create dynamic brick/tile-like geometry?

I want to create something like this: The key requirements are: Must be actual geometry. I'm going to be 3d printing this, so I don't think using materials will help me here. Would like to be able ...
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2answers
257 views

Apply Transformation Matrix to Existing Mesh

How can I apply a 3x3 or 4x4 transformation matrix to a mesh such that the matrix's transformation is baked into its geometry? E.g. applying the following matrix... \begin{bmatrix} 1 & 0 &...
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1answer
43 views

Apply “backface culling” if the surface is not visible from the given point

Given the point (x,y,z) and meshes scattered around this point in the space, where each triangle on the mesh has its normal known, I want to be able to detect which triangles are not visible to the ...
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55 views

What happened to my straight lines in 2.8?

I modeled these letters in 2.7 no problem. I just brought them into 2.80 and the straight lines have this "back forth" look along the geometry. The normals are all outside, I tried to re-do the ...
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38 views

Disassemble this math function pseudosphere into circle strips or/and individual cones?

Is there a way to disassemble this math function into circle strips or/and individual cones? Irrespective of section number depicted. The idea is to print on paper and cut-out.
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158 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 ...
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363 views

Is there a hotkey to subdivide geometry?

I’ve been following this tutorial for a model, and I’m wondering if there’s any hotkey to change an extruded plane (like it was done in the video) from this: To this: If not, do I need to use a ...