Questions tagged [normals]

Normals describe how faces and vertices are oriented and can be used to aid various calculations and effects. This tag should be used for questions regarding normals in Blender, from uses to issues.

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42 views

Strange divots on mesh located?

I was looking through this (https://www.youtube.com/watch?v=24hUk1Xjtog) speed model by blend motion, and it inspired me to create a similar combat style knife. In blend motion's video the blade had ...
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25 views

Mesh converted from Text has weird Faces and Directions

So I'm trying to convert text into a mesh with all the normals facing the same direction. I'm getting this weird issue where the convert to function is creating a face at a weird location / direction ...
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64 views

Normal Map Seam Problem

When i add normal map it creates seam in the mesh how can i fix this ? I generate normal map from the diffuse with some maps generator program.
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1answer
153 views

Calculating split normals using python?

I'd like to use a python script to transfer normals to a new uv layer. Here is my first attempt: ...
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4answers
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Why do reflections on a smooth-cube look more 'definite' than a flat shaded one?

From what I know, flat shaded polygons use the face normal for lighting calculations for every pixel that makes up said face. Likewise, smoothshaded polygons do per-pixel normal calculations. However, ...
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1answer
92 views

How to render geometric normals?

When we import a mesh into Blender, we can get a lot of information, and normal is one of the properties. The Normal in ...
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How can I rotate/displace instanced objects with normals from another object?

I want to make a wall of planks, where I can use a sphere's distance and normals to rotate the planks to the normals. Think of it as the sphere is "bending" the wall around it as a force ...
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32 views

Why are the normals on my curve path not at each control point?

I am new to Blender and trying to develop a path that will be used to make a curved section of road. When I add the curve path and try to edit it, the normals are not at each of the control points but ...
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37 views

Procedural normals make object look flat-shaded

I came across an issue that now seems to be present in all my projects. Any normal maps using a procedural texture (such as noise, musgrave, or voronoi) look slightly flat, even on fully smooth-shaded ...
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174 views

Displace/Perturb Normal in Tangent space with Height Map?

Bump mapping is really convenient because you take an input normal, you take a grayscale mask (height map), and you get the appearance of displacement. But it has visual quality problems due to being ...
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1answer
54 views

texture is on the wrong side of the mesh

I imported a obj and when it came in the texture is on the inside of the mesh. I tried to flip the normals but that didn't work i also tried to recalculate the normals but that didn't work as well. ...
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2answers
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what is the function of clear custom split data

I was making a model and then when I wanted to add Auto Smooth this weird thing appeared. Searching online I could fix it by going to Geometry Data and pressing Clear Custom Split Normals Data. I ...
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1answer
371 views

Geometry nodes: How to distribute points on valleys only?

I want to add vegetation to my rocky semi-desert scene of Himalayan mountains, using geometry nodes. In that scenery, vegetation only grows in valleys, where water would sometimes flow. Note that by '...
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1answer
22 views

Why is my normal baking ending up with lowpoly normals?

Blender 2.9. I'm following a tutorial on character creation and modelling. I am modelling an orc. So far, it looks great -- except I'm struggling to get my normals to bake correctly from a highpoly ...
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1answer
47 views

Baked normal turned out weird

I am new to blender and was following a tutorial where I wanted to bake a normal map from a high poly mesh to a low poly mesh. On finishing baking the normal map turned out weird. I tried various ...
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0answers
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Incorrect Normal Calculations on a chair mesh when exported to substance

I have a chair that I will use inside a composition but when exported to substance it displays the normals incorrectly, let me explain. In this image we can see the chair on the left has correct ...
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2answers
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What causes the weird shading when you smooth shade a cube?

Everyone knows the infamous ugly shading when you smooth shade a cube (or other sharp structure): My question is not how to fix it. My question is what causes the cube to be like this? I know "...
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1answer
211 views

How to make 2 surfaces parallel to each other

I want the surface of plane A to be parallel to the surface of plane B (I know it's a curvature). How do I make a surface parallel to any random angle? Please guide. (photo attached).
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19 views

Bender model has changed

When blender model is imported to unity as .fbx file, the model has been changed like thiseven though this model having no rigs and inverted normals. And i tried this way also (changing faces quards ...
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1answer
20 views

How to scale an object so that all it's faces are moved 2 centimeters towards the median from their original position?

I have modelled the outside of an airplane's fuselage in Blender, and now I want to model the inside and doors. For that, I need to make the fuselage skin a 2 centimeter's wide "wall". Below ...
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1answer
300 views

How to create skydome model in Blender?

How do you make a skydome as used in this Sketchfab object. A skydome is an alternative to an HDRI for providing sky-like lighting. It's an actual dome that you place your scene inside, the way a ...
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1answer
45 views

Cycles Alpha Issue - Plane with seamless edge

I am attempting to overlay a high res, sculpted plane on top of another plane but I am struggling to hide the edge of the overlaid plane. The plane has a shrink-wrap modifier, a data-transfer(normals) ...
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1answer
58 views

How do I set all the faces on my mesh so they are the same shade?

I created this opening animation using blend keys. (viewport shading) When the animation opens up at the end I want all of the triangular faces to be shaded the same colour, as the mesh is now ...
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1answer
27 views

How to control normals of spiral curve so objects in array point towards the outside [duplicate]

I have a torus where I wrapped a spiral curve around using the shrinkwrap modifier. After that, I created an array and curve modifier on the "eyes" object as I want it to follow the spiral ...
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1answer
43 views

Eevee - My objects normals look messy in rendered mode but seem fine when looking at data

I modelled this car starting from a plane and extruding it (which probably doesn't help), and now that it's finished I just realized when changing display mode from object to rendered that the faces ...
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1answer
152 views

Geo Nodes: Align point instance to normal - tangent

I am attempting to replicate blenders particle system alignment using geo nodes. the issue I'm having is that I cant get the particles to stay upright, is it possible to align to something like normal ...
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0answers
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Align Camera Angle to Averaged Normals for Small Area Below Camera

Background: I have a large terrain mesh (~6M vertices) which I would like to "drive" over with my camera. The mesh was sourced from a high quality physical terrain DEM. I am using the ...
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1answer
40 views

Stationary Blender particles on rotating circular plane not rotating as if following planes rotation

I want my particles to rotate as the circular plane beneath them rotates in order to give the impression of ships or cars travelling in a circle. My particles normals are not orienting in the ...
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0answers
23 views

cycles shadow issue, one object in the scene is way darker than it should

In my scene, one of the objects get's darker than the others, in the picture, the arms of the model should be the same color than the legs, the same materials are applied. The problem only occurs in ...
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0answers
29 views

Smooth out the outline of an object without creating more geometry

I have this low-poly mesh: It renders as this: Even with Smooth Shading on, the outline is still jagged. A simple subdiv modifier fixes that, but of course it creates a lot of geometry. I feel it's ...
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27 views

Trouble with baking edges on hard surface model from high to low poly

I created a simple box with a few extrusions, applied scale, unwrapped with all the necessary rules (sharp edge = seam edge, space between islands and etc), created "high poly" mesh with ...
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2answers
68 views

My pocket watch is not visible through it's glass except

I am using eevee and blender v2.93.3. My pocket watch glass uses a glass bsdf that works but nothing other than the hands appear, not even the body itself. After looking at the normals, it appears ...
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1answer
208 views

Use Normal map on something other than base normals

The Bump map node has a Normal input. This lets you make alterations to your Normals before the Bump is applied. The Normal Map node does not have this. It always acts on the base mesh Normals without ...
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0answers
34 views

How exactly does the Strength input of Blender's bump nodes work?

From the Blender Docs: Strength Strength of the bump mapping effect, interpolating between no bump mapping and full bump mapping The idea of mixing together two ...
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25 views

There is Something wrong with my normal map

There's some weird problem with my generated normals. They're like all cutted, but my model is smooth as wet soap, I can't figure out how it happens and I cannot fix it, so please can some good soul ...
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1answer
32 views

is there a way to hide the cut when 2 objects need to appear as one?

I've been trying to find a way to have 2 objects appear as one. For reasons this has to be the case for the game I'm working on. My question is, is there a way to hide the line that appears when you ...
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2answers
61 views

Why does a smooth-shaded mesh look different upon subdividing it?

I would like to preface that by subdivide, I mean the one that merely adds more polygons inside a mesh without distorting a shape, this: Now from what I do know about smooth-shading, when a pixel is ...
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1answer
98 views

If bump maps override face normals for lighting calculations, why do flat shaded bump mapped models look different from smooth-shaded bump mapped?

I am confused in regards to this. From my understanding, a bump map sort of 'overrides' the normals provided by the mesh faces for lighting calculations. I also know that in flat-shading, a pixel is ...
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2answers
1k views

Access to Vertex Normals in Geometry Nodes

vertex_normal was a Mesh attribute, available in Blender 2.93's Geometry Nodes. It has since disappeared. The normal attribute ...
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1answer
46 views

Align normals to shape surface

I have several shapes like this as a curves. Sometimes with a whole in it: As a next step I convert them to meshes. When i do this all my normals are looking in the upwards direction. But I want them ...
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1answer
58 views

how to find the angles to set the cylinder direction as perpendicular to the faces(polygons in python) of an object? [duplicate]

I want to find angle of an cylinder so that it will always perpendicular to the position in another object faces. I got face(polygon in python) position by 'bpy.context.active_object.data.polygons['...
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0answers
24 views

Moving multiple objects at once

I'm trying to move a set of objects along say x-axis, I select them all and try to shift them, but all of them are aligned to the different axis, so they move along different axes. How do I quickly ...
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1answer
26 views

How to rotation according to face normal?

I want to place cursor with copying face rotation (Normal?) First i did place cursor to where door handle will be placed And create circle object to where cursor is placed. I want to rotate my ...
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0answers
33 views

Render inside AND outside normals?

I have a model of a process tank and I'm trying to set it so that both the outside AND inside the tank are visible. I've gone through a number of posts about normals and such but recalculating them ...
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0answers
17 views

Normal Edit Modifier changes scene appearance before pressing Apply, sounds like a bug?

I have only one object in my scene, and is a 3d scanned mesh. Without pressing any settings in the modifier, the mesh changed in appearance right after I click on Normal Edit inside the Modifier menu ...
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1answer
16 views

texture on wrong side, normals are good

Ive created a procedural texture shown in the middle, and baked it to a texture, tried multiple uv mapping methods, reseting vectors and the baked texture always obeys the lighting of the face normals ...
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0answers
68 views

Strange transparency/artifacts when baking normals from a high-poly mesh

After adding a bunch of details (using KITOPS inserts, mostly) to a high-poly mesh, I've been attempting to bake the details of the mesh to a normal map for a lower-poly version. For some reference, ...
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28 views

Baking bevel node results in colourful normal map

I am trying to bake the bevel nodes normals onto my model. However, I constantly get results like this were the normal map looks all colourfull, instead of the light purple colour its supposed to be. ...
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20 views

Normals create black spaces in Cycles but work fine in other rendering engines

I am relatively new to blender and recently learned to bake normal maps. I did this and it worked fine (It looks great in Eevee) up until I switched to Cycles. Now, either the normal gets misaligned, ...

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