basic 3d shapes

cylinder should have 32 sides, no top or bottom disk. radius of 0.5, height of 1 or whatever.

reset blender
double click a , then x delete everything
shift a -> add mesh cylinder , you cna adjust in bottom left if you want
Tab to edit mode,
select top and bottom face and mark it as seam, google how to mark seams
then go to edge select mode and slect one edge of the 32 and also mark it
go u->unwrap and thats it

>>552187
if you're a programmer you could just generate the cylinder mesh in your program, ain't very hard.

File: 1.png (172KB, 1107x1005px) Image search: [Google]

172KB, 1107x1005px

>>552195
thanks, but now it is like this.
and when i press S to scale it always scales uniformly somehow, and it seems to be impossible to make it fit perfectly into the square.

mind giving me the steps to make it "fill" the square perfectly (as in, no scaling by mouse, but entering values somehow, or snapping the top edge or whatever)

>>552206
Yes, true! And I DID do that in fact :) (for simple forms at least)

A cylinder would also still be super easy to generate in code, but I know that in a few day's I'll need a different solution.

Eventually I have to remove some faces, or have more specific needs in regards to UV mapping. Not yet, but I can foresee that doing it in a procedural way like I'm doing now won't get me very far. I hope that explains it.

I think I got it.
Selecting all the individual vertices of the top / bottom and then translating them to 0/256 did the trick.

Thanks again man >>552195

If anyone knows a better way to do this (automatically filling / stretching the UV map onto the whole square) then please let me know

>>552225
> automatically
Write a simple python script. If I'am correct, Blender very friendly to that kinda stuff.

>>552211
In the UV unwrap window, press a to deselect all, then b to enter box select mode, select top row of vertices and then either press g followed by y and move those vertices with a mouse, locking the movement by the y coordinate, or idk you might be able to enter 0 in the side menu, you know, the in the upper right quadrant of your picture. Been a while. The way I usually did it was, I'd set the 3d cursor (that ugly thing that moves when you left click anywhere) to top right corner (either c or shift+c i believe), then scale to zero by the y axis (s, y, 0, enter)