Hello, guys! I cannot say that i am a newbie in Blender, but I noticed weird behaviour after vertices. Let’s say i want to make a cube, apply a subdivision surface on it and then extrude the TOP (just one) vertice. Then I see that edges that conected to that vertice don’t go up proportionally. (I can’t really explain what i mean cause i am not a native speaker ). How to recreate it in images below). And that happens to absolutely new project. So I wonder, do I have to reinstall
blender or it is how that should be?
From your screenshot, nothing appears to be wrong with blender. If you want more than one vert to move when you drag that one up, you need to turn on proportional editing. If it’s already on, try middle mouse scrolling to increase the range of influence.
Faces with 4 vertices are internally handled as triangles. So that its in fact two triangles. You normally dont see it, but for a quad its possible that not all points lie in the same plane. If that happens for a face then you will see the two triangles.
Its how GPUs work. Working with triangles has lots of advantages for them. Quad dominant meshes are just nice for modeling, cause it defines an edge flow as render primitive they just cause trouble.
You can mark the for quads on top and triangulate them, When blender sees them as triangles then you can spin/rotate the edge to lead to your center vertex.
Menu → Face → Triangulate Faces
Menu → Edge → Rotate Edge CW