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.
1,406
questions
6
votes
1
answer
8k
views
Values of the normal of a selected face
I need to be able to find the normal of a selected face (given that we are in edit mode), or be able to compare the position of the face to the origin of the object. I have no idea how to start either ...
6
votes
1
answer
3k
views
Dual normal faces
I have created a model which requires some faces to be dual sided.
I intend to import this model into Unity. Reading about this, it seems that the recommendation is to duplicate the polygons and then ...
6
votes
1
answer
829
views
Why do normal map ridges become grooves in mirrored object?
My model has a pair of objects, one a mirror image of the other, like bookends or a pair of wheels. They use the same cycles nodes material involving a normal map. Ridges on the one object appear as ...
6
votes
1
answer
3k
views
Can't render an inside-out cube?
I have "double-sided" unchecked/disabled, but the backs of my faces still render anyway. I should be able to create a cube, flip normals, and render an inside out cube but it doesn't. How can I make ...
6
votes
2
answers
2k
views
Set Normal angle with Geometry Nodes set smooth node
In Geometry Nodes I am able to build curve based shapes by joining curves together with Join Geo, filling the curve then using a solidify modifier and bevel to create an extrude. However the resulting ...
6
votes
1
answer
3k
views
Cycle Normal Pass in Camera Space
I am wondering if there is any way that we can alter the cycle normal pass to output value in camera space. Currently, as far as I know, the normal is in object/world space, which does not change when ...
6
votes
1
answer
691
views
rotating the x and y axis of a normal
If I create a new object, and then go into edit mode and click on "normal transformation orientation", the z axis always runs along the face's normal, but the x and y are all over the place.
...
6
votes
1
answer
5k
views
What is "Set normals from faces"?
If you are in the mesh Edit mode, you can find a button called Set normals from faces in the Tool Shelf, Shading tab, Normals section. The Blender manual seems to have no information about this ...
6
votes
1
answer
5k
views
How to unify face and vertex normals
I created a model in another program, and imported it to Blender to map the UVs. Parts of the model are symmetrically flipped mesh planes. I noticed in Blender that the mirrored objects display as ...
6
votes
2
answers
2k
views
Blender Cycles normal map difficulty
I am having an immense issue with using my normal map in blender cycles engine. It works perfectly fine in Blender Render (but I can't get my transparency to work there, so I figured it's time to move ...
5
votes
3
answers
7k
views
Some edges are not shown in object wireframe mode?
The wireframe on the right looks correct, but in object mode on the left, you can see that the upper and lower vertices are not connected, while the "box" to the right is fine.
I tried Fill and Merge ...
5
votes
2
answers
1k
views
How does Blender calculate vertex normals for a circle with no face?
From what I heard, vertex normals are calculated by averaging the face normals of all the faces that share a particular vertex, perhaps by giving extra weightage to the normals from faces of large ...
5
votes
2
answers
811
views
Problems with Gradient and Bump Node
I'm trying to make a color gradient. When I use Wave Texture as a color, everything works correctly, the gradients are not sharp.
But if I connected Wave Texture as Bump Height, the gradients become ...
5
votes
2
answers
8k
views
How to show the normal of a face
How do you show the normal of a face in Blender 2.8.
It used to be in the properties panel (n to show) but now where has it gone?
5
votes
2
answers
561
views
Why multiply a normal?
I am looking at this tutorial Geometry nodes for damage to stone. It uses a normal multiplied by some random vector to produce offset. What does multiplying a normal of a point with random vector ...