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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What are the different Smoothing options (Normal Only, Face, Edge) of the FBX output?

I'm practicing to export my meshes to an FBX file in Blender and import them into the game engine. Sometimes mesh smoothing turns out not as expected, so I got curious about the difference between the ...
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Geometry nodes, How to offset points on face along normal direction by random value?

Im trying to scatter Swords along of a giant monster and i had a rather good first time working with geometry nodes. My question is: How do i offset the different points on my mesh that where ...
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How can I transfer normal of cube edges to curve tilt?

Here is my problem. Ideally I want to procedually make frames like this. I start with a default cube and [mest to curve] it into some curves. After I use a custom profile shape to [curve to mesh] the ...
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Black artifacts on mesh with Cycles, after I set up a normal map

I've been using Blender a lot and I have a commission due to this weekend. I sculpted a mesh and then retopologyzed it, baked the Normal Map from the Highres to lowres mesh with "Selected to ...
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Align to normal vector with python

I was looking to orient an object to a selected active face of another object in Blender 3.2. Already found other similar questions, but none worked: Align to face normal vector (took code from here) ...
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Can I have my High Poly version of a model be in pieces and use it to bake normals?

The High Poly version of my model is in multiple pieces (Head,Torso, Arms, Legs) because my rig just can't handle turning it all into one mesh, tho I've pretty much made the parts where they stick ...
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I can't bake this high-res model to my low poly model

I'm trying to bake textures and I'm finding it very difficult to move forward with what exactly I need to do. This is the file. I setup an image texture with Color Space Non-Color, fed it as input to ...
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Why my material look transparent, my normal are correct

trying to learn blender, I tried to apply some material from a texture to my low poly car. when I export this as glb the wheel looks like transparent, as you can see from the bottom screen. Any ...
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Why does the edge's normal not follow along surface?

Such as the pictures below, why does the loop edge's normal not follow along the surface in ideal conditions? picture1: The actual normal shows on the model picture2: The ideal normal I want
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Normal map to height (black and white)

How to convert normal maps (the colorful ones) into black and white maps (height) with some nodes to use them later?
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How to fix box-projected normal maps?

The Image Texture node offers a box projection mode with optional blending. But the Normal Map node doesn't have a matching mode to allow functioning box-projected tangent space normal maps out of the ...
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Different values for split normals depending on face/triangle

I'm writing an exporter for an old game file format that only supports one normal per vertex. This requires creating duplicates for each vertex (or rather, loop) that has split normals. The problem I'...
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Problems moving vertices on local axis

When I select only the vertices on one side, they're moving along the normal Z-axis as expected. The vertices are 'sliding' towards the end of the object. However, when I'm trying to move the ...
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why is my object away from Bezier curve + Array modifier [duplicate]

so I am trying to make rows of ramps and when I add the object with array modifier everything shifts over away from the curve every time I move it the normals get all flipped
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Creating and printing Split Normals in Python

I created custom split normals, they show up in the viewport, but how can I get a list of them in python? ...
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Mathematically, what's happening under the hood with Shape Keys?

I recently put together a node tree in Geometry Nodes that emulates the functionality of Shape Keys. The result is very close but not always exactly the same as when using native Shape Keys. A ...
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Is it possible to control the rotation of a material with a normal map?

Why does the normal map change the rotation of the reflection? The texture is set to be Non-color. Is it possible to keep the bump of the normal but have the reflection be perfectly straight?
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Shader Editor - Mapping Rotation by Face Normals

I want to somehow use an "Object" Texture Coordinate Mapping with Brick Texture (yes, exactly "object", i don't want to use uv) So, how to use normals from faces to calculate ...
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How to add a consistently oriented bevel profile to a 3D curve with angles?

My problem is to create a border from a complex curve. The border section should be a constant rectangular profile constituently oriented. The border represents carpentry elements under a roof. The ...
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Changing normals using Python

Is it possible to edit face/vertex normals using python? I tried editing them like I would any other attribute (obj.data.attributes["normals"].data[1].vector = (1,1,1)) since I can see them ...
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Lighting/Shading Issues Not Caused By Normals [duplicate]

I'm in the process of making some low poly characters, and normally it's pretty straightforward but there are some weird things happening with the lighting/shading on this one character (shown below) ...
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Double faces issue, cant be merged by distance

I am working on this game asset and i want to triangulate the mesh. I found double faces on my mesh but merging by distance could not fix the issue. I can delete them by hand an create new face but i ...
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Is there a way to highlight only the red faces which has the normals faced the wrong way and then flip them? Without manually pressing every face

I have a lot of faces, around 500k. Some of the normals is flipped the wrong way, is there a way to highlight only the red faces which is faced the wrong way and then flip them? I have tried to ...
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Why wont a Normal map be produced?

I have modelled a wheel and am trying to bake from high to low poly however nothing is being produced regardless of max ray distance, below are lo and hi polys: [![Nothing is produced[] enter image ...
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Exported mesh with custom normal error using Hard Ops

I'm using the Blender addon HardOps (0.9.87.26). I can't remove the sharpen edges effect from the mesh and it seems to mess up the normals on import to another scene Ive tried removing custom norml ...
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GN: Shrink/Fatten - what does Offset Even mean, mathematically speaking?

A while back, I put together a Geometry Nodes setup that replicates the functionality of the Shrink/Fatten operation. But it does not include an option to use "Even Thickness" (or now it ...
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Issue with origin point, orientation and exact movements

This issue is in 3.2.0. I looked around and already solved part of the problem I have with the origin point (setting origin to geometry, to centre of mass, to 3D cursor,etc.) and I know that applying ...
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weird artifacts when doing Boolean operation

As shown at picture above I have some problems when doing Boolean operation. The cube bound box is where the operation is happening but somehow Boolean is affecting totally different parts of mesh and ...
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1 answer
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Find intersection between a line and a circle

I'm a beginner in using blender. I have a circular element on top of which is a vertex. I wish to get the location of the intersection of the normal from center of the circle till the vertex with the ...
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When I try baking the left high poly object onto the right low poly one it ends up like this

When I try baking the left high poly object onto the right low poly one it ends up like this (The center is all black, you can still see the low poly edges even though I smoothed it out, and overall ...
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Delete the bottom half of a geometry along the Z-axis using geometry nodes

I just can't figure it out why it does not delete half of a mesh. Trying to do so in geometry nodes. I want to delete the bottom half of it along the Z-axis but I can't, it acts like it has only 6 ...
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unable to smooth copy of object

After copying the eye, the new object lost its smoothness. Tried shading smooth, recalculating outside, smooth face, edge, and vertex.
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baking normal from procedural causes odd scretching around different materials

I have a mesh with three different materials. I applied different procedurals to each. When baking the diffuse texture give me no problems, but the normal maps are giving me strange stretch patterns ...
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Create/simulate repeating bevel on walls of room geometry

I'm super new to using blender, and i'm enjoying the experience thus far! I'm looking to create a very simple room that has a sort of beveled texture/geometry along its walls, floor, ceiling, etc. My ...
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Flipped Normals cause Fluid to spill

I tried to make an animation with fluids for the first time, and I modeled the jug without tutorial after one I have myself. I used a cylinder as the geometry for the fluid, but the moment I started ...
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Weird normals in Blender, why? Imported textures from Substance

So this is how it appears in Substance: Yet it looks like this once imported into Blender: I made sure to export the normal map as OpenGL, the normal map is set to non-color data. Changing the ...
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2 answers
192 views

Change the color depending on the normal direction

I need to change the color of the cube surface depending on the normal direction. For example, the surface of a cube should change color to red if its normal is directed upwards +/- 10 ° (on the Z ...
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Smooth shading getting flat when normals applied

im relatively new to 3D modeling, i watched quite some tutorials and started modeling some stuff, but im having a problem and cant find anything to help me solve it. To the problem then. So im ...
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Get rotation Euler from normal

Documentation for Distribute Point on Faces node for geometry nodes says "Rotation: An XYZ Euler rotation built from the normal attribute for convenience. Such a value can also be built from the ...
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Reproduce particle system settings in geometry nodes

I have a tree generated with m-tree add on, which is based on a particle system. I would like to use it as an instance in another particle system. As far as I understand, such nested particle system ...
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2 votes
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How can I make this low-poly curve look more round without more subdivisions?

Sorry if this sounds like a dumb question. I've been up all night working, and my brain is mush. So I am modeling a low poly object I am having trouble making a curved edge look more smooth. Since it'...
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Displacement outcome varies from face to face despite having the normals face the same direction

I've had this problem multiple times now in Blender 2.93.2. I apply an image for displacement purposes in the node editor, but some faces (they are in an about 90 degree angle to the working ones, it ...
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Why is there a black spot on my normals? Only appears on mesh, not on normal texture

This is what it looks like, coupled with the UV Editor showing my normal texture Here is me selecting the portion it is at, and as you can see it does not appear on my normal texture. Why is it ...
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Exaggerated normal shadows due to retopology?

I'm having a few issues related to normals with a project that I'm working on, and the general breakdown of what I've done was sculpt out my female model and do retopology on it manually. (I'm ...
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3 votes
1 answer
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Normal Map problem - looks low poly

What on earth am I doing wrong here I followed Jayanam's Blender Bake Normal Map Tutorial https://www.youtube.com/watch?v=DQPjIGncXcM but everytime I do this I get a low poly looking normal map. I ...
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Issue with solidify modifier being uneven

I'm trying to apply a solidify modifier to the following shape: However, when I do add it, the thickness is not constant: This is a problem, as am planning to 3D print this, and this would be less ...
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Model appears inside-out with missing polygons in Eevee, but fine in Cycles

The model I'm creating has random polygons missing and appears almost entirely inside out when viewing in render preview mode with Eevee, but in Cycles render preview it appears completely fine. I ...
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Blender 2.8, Issue with smoothing seam between seperated meshes, and Data Transfer Modifier

While following the instructions to use Data Transfer to smooth the seams between 2 separated mesh parts, this happens: The Colour is supposed to be the same as the surrounding meshes. the Normals ...
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2 votes
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Is it possible to make a corner and/or edge appear flat?

So I am creating this model for a client and I am trying to keep it really low poly. There is a slight corner at the edge of a mesh that I want to hide (I want this piece of mesh that extends out to ...
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Problem in aligning instance to tangent of curve

I'm trying to create a procedural rollercoaster in geometry nodes. Usually a rollercoaster has this support in the rail: I want it to follow the rotation of my curve, but no configuration of Align ...
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