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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22 views

Is there a way to fill in a hollow object?

I am trying to make a mold of an airway. My goal is to fill in the mold (rectangles) up to the inner geometry. Right now, they are completely hollow and I was curious if there is a way to fill in ...
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10 views

How to add vertices to make baking into vcol more accurate?

I was wondering how I'd be able to create new geometry to make baking shading into VCol more accurate. Something like this is what I'm looking for:
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1answer
20 views

How do I fix this simple intersecting geometry?

I have this shape here I made from curves: It works fine in renders and viewport but I want to use it as object for boolean but it's not working because it has intersecting geometry: How do I fix ...
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19 views

How to have an object's scale be affected by proximity to empty?

I have a collection of cubes that are parented to a spinning circle. I would like the cubes to increase in scale as they pass through an empty and then shrink again so that the cubes at the front are ...
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2answers
16 views

Select all the faces with inverted normals

I desperatly need to clean up some geometry that was previously moddeled in a CAD software. Is there a way to automatically select all the red parts so I can filp them? Recalculating normals does not ...
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1answer
16 views

Is the a way to project surface cuts through the entire object?

I am trying to cut this block mold at the lines I made. The issue is that I can only cut the surface, and can't figure out how to cut all the way through, including the inner geometry. Is there a ...
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1answer
60 views
+50

edges.new - Edges Not Adding Correctly (black not solid orange)

I'm using a python script to create edges. For some reason, my script is recognizing some edges, displayed in solid orange. Others are not recognized the same and are displayed in black. (see image) ...
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27 views

Why does Blender allow faces whose vertices are not on a single plane? [duplicate]

I dissolved one corner of a cube: And got this weird face: It doesn't make sense to me cause it's not a "face" in a geometrical sense. Why do faces like this exist in Blender and is there any usage ...
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1answer
45 views

How can I improve my mesh imported from Sketchup?

I have created a mesh in Sketchup Pro, imported using a plugin in an older version of Blender, and then opened the file in the latest build. As you can see the Mesh looks awful. As I plan to use Brick ...
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3answers
29 views

How can I evenly split a cube?

I am trying to make a mold to model the airway. Is there a way to split a cube all the way through in multiple parts. I am trying to cut the cube in this fashion. Is there way to cut it like this? I ...
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29 views

Using animation nodes to create / animate different 3D Polyhedrons solids using the expression node

Using animation nodes to make 3D platonic / geometric / polyhedrons solids using expression node. The reason I want to do this is to animate them in different ways. Some of the objects would be ...
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1answer
29 views

Is there a way to fill in hollow objects?

I am trying to make a mold of the human airway. To do so I need to subtract the airway components from a block, then 3D print the mold. It appears that all components are hollow, is there a way to ...
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1answer
45 views

Offset points in space with python

I have a path-curve that uses a profile with two circles (reference and profile on the image below). I'd like to create a second ...
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1answer
67 views

Seeking better way to add precise hemispherical caps to a swept curve

Given an arbitrary curve swept with a circular profile of a specific radius and side count (controlled using the Depth and ...
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1answer
20 views

Is there a way to set objects' origin points to be separated from each other at certain distance in Particles System(Hair)?

While I was watching Blender Guru video for 2.8 Blender, he set the origin point of 5 different sprinkles in Set origin to geometry. And it occurred to me that the overlapping problem with particle ...
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2answers
151 views

How to make grooves without editing geometry

I'm trying to cut grooves onto a curved surface without directly editing the geometry. This is my desired end result that I achieved by Ctrl+B to bevel and ...
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1answer
63 views

Detect and fix holes in an object (not mesh holes)

I have a complex mesh that I have imported from a .obj file. I would like to check whether it is genus-0, i.e. whether there are any holes in the object. If there are such holes I need to fix them. I ...
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1answer
26 views

Non Manifold geometry preventing loop cuts

I am modelling a simple treasure chest, shown in the screenshot below. However, I am having issues with loop cuts not cutting through the whole model. As you can see, the yellow line is the loop cut ...
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0answers
21 views

How can I get the vector value of the normal of a selected face using the Blender Python API? [duplicate]

I found one solution where I can sort-of get it mathematically by getting the cross product of the vectors in the face, but I think I'm losing accuracy since its all in floats, and rounding the array ...
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30 views

Is Mesh Occlusion Data Available in Blender Python API?

I want to create a mesh object that is made up of ONLY the edges which are visible from a given camera. This mesh needs to be dynamic, as objects animate and the camera moves, edges should adjust ...
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0answers
16 views

Weird shadow on cycles preview? [duplicate]

I have this weird shape that suggest some smoothing issue in cycles geometry is shaded smooth tho...
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1answer
35 views

Merge by distance messes up shading?

I have recently encountered the following problem: I am importing a model from WOW Model Viewer, but it is imported in such a way that faces are not connected, so in order to rig and animate it ...
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0answers
33 views

How to add sprinkles to my donut using particles?

I want to add some sprinkles onto the top of my donut by using particles and their hair type. But when doing that the hair is pointing downwards and it's location is not on the top of the donut. How ...
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0answers
28 views

Is this valid geometry? Any problems for games?

I'm looking to make low poly models for games so I'd like to keep poly counts minimal, but there is one thing I've done with the knife tool and I'm not sure if it causes any issues. I honestly don't ...
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13 views

How to Use Curve Extrude operation from Curve Properties ->Geometry-> Extrude in a script. (extruding SVG curve)

I am trying to build a script that will allow me to introduce the Curve, Properties, Geometry, Extrude function in a Panel. I need it to extrude and SVG curve. I am trying to use a method similar to ...
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2answers
27 views

How to use the array modifier multiple times in an optimised way?

I've been doing some visualisation exercises and I had this question. I want to recreate . I planned to do this by creating a 1x1 cube and then cloning it using the array modifier, but I am not ...
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1answer
36 views

Un-Subdivide - Remove loops on one axis

Whilst trying to make some geometry I have inadvertently introduced a number of edge loops that have effected my model causing the stripey effect shown in the screenshot. Is there any way of un-...
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0answers
11 views

Render a polyline with a custom attribute

I have an object compound of several thousan of polylines. I convert those polylines to cylinders using the bevel option in the curve tab so i can render them. Those polylines have a float value ...
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1answer
145 views

How to set custom vertex normals for certain vertices using python?

I am struggling to set custom vertex normal vector just for certain/selected vertices in an object with python. I searched through the documentation and forums but nothing really helps so far. This ...
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1answer
38 views

Why my geometry disappears when switching to sculpt mode?

When I go into the sculpting tab the meshes are not visible. The only things I see is camera and light. Layout tab: Sculpting tab: Q: How to get the cube back?
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0answers
23 views

How do I prevent weird shadow clusters on curved surfaces?

I am trying to make a rather complex surface (as pictured) but find that my geometry is making weird shadows. I've already recalculated and checked normals and vertices alignment. Any advice would be ...
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1answer
47 views

UV unwrap or geometry issue (cylindrical object)

I have created a mason jar object, and I am primarily having issues unwrapping the lid part of the mesh: When attempting to unwrap properly and avoid an overhead projection type mythology that ...
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2answers
135 views

Why did my mesh disappear after using remesh modifier?

I was trying to clean up the geometry of letter "N" after I converted it from text to mesh. But the mesh of letter "N" disappears after I apply the Remesh modifier. Making Octree Depth higher did ...
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13 views

Game character has weird geometry / lighting when imported, also how do I achieve a more realistic look

I downloaded models from the game "Dragon Ball FighterZ" and the models have this weird thing going on around their mouths. I'm not quite sure whether this is because of Blender Cycles or there's an ...
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2answers
83 views

AO node black artifacts

There are black tris all over the mesh with the Ambuient Occlusion node connected. Changing distance or samples does not help. The subsurface modifier reduces black tris a litte but they are still ...
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0answers
12 views

Can't combine all faces into one [duplicate]

Sometimes when I use the "F" key to combine several faces together, Blender tells me that it's not able merge the faces, and I don't quite understand why. Take the following example: https://www....
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2answers
45 views

Why can't I subdivide?

Sometimes, when I add a face with the "F" key in Blender, I'm unable to subdivide that face further. For example, observe the following video: https://www.youtube.com/watch?v=T9UkpsXGVd8&feature=...
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0answers
28 views

How to add details to a low poly model via a displacement map?

A newb here. So I've got a low poly model and high res texture. How can I add details to this model via a displacement map? I tried to displace at the mesh level and at the shader level. The mesh ...
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0answers
62 views

Blender 2.81 Boolean Bug

Basically boolean union operation gives my mesh additional verts and edges I don't understand how and why it added them. I'm using blender 2.81 My blender file: http://pasteall.org/blend/index.php?...
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0answers
29 views

Should I model separate objects for game assets?

I am still new to blender, and making art for a game. When it comes to what is consider "performant", is it better to do it like I've done in the image here, or should each fence post be a separate ...
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0answers
60 views

How do I solve problems with overlapping bevel geometry on a curve?

Noob here. I want to make a kind of topography from a curve that is beveled using a basic triangle. But this triangle used as the bevel object is much larger than the curve. In places the curve ...
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1answer
266 views

Quad-only topology at the edge of a chamfer

Is there a better way to recreate this shape using only quads? Thanks
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0answers
20 views

Geometry that separates from the cube, how to fix?

Whenever I add a new mesh object it duplicates, creating one editable object and not another.
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1answer
190 views

Creating curved grid with triangle windows

How to model curved grid with triangle windows and keep it smooth? I tried to model everything and then snap (project) it to main mesh, but it causes a lot of wird shading at corners. The mesh's on ...
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1answer
53 views

How To Make A Stiped-Grate Material

So I'm currently making a First Order TIE Fighter and I need help making the TIE's texture on its wings. Specifically this texture... I'm not sure if I should somehow recreate the geometry of a ...
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1answer
140 views

No object option when adding a geometry bevel to a curve?

I'm trying to extrude a circle along a bezier curve. Normall i would create a specific object ( in this case a circle with 32 verts) and use that as the bevel object for my bezier curve to refer to. ...
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0answers
11 views

Blender 2.8 freezes when adding new geometry to an exisitng file

I have been having an issue in Blender 2.8, whereby I'm working just fine, and then at one point when I add new geometry (simple shapes like the sphere), Blender freezes. This hasn't happened before, ...
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1answer
52 views

Smooth mesh by increasing poly count

No beveling, I need align it to outer edges. So, this mean automatic subdivision(needed iterations count depends from poly size, and probably nearest faces angle in between). For example make 5 pseudo ...
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0answers
40 views

Self-intersecting geometry removal

I'm working on a number of icons for 3-D printing. I'm having an issue where I've traced out the object as linked edges and vertices, and then gone through the following process: Convert to curve. In ...
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1answer
47 views

Boolean Modifier Issue

I'm experiencing an issue when applying a boolean modifier to my mesh. I've tried subdividing, I've tried checking the normals of everything and they all are facing outward (verified by the blue ...

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