Making texture for a "cube"

#1

Hello together,

I hope my question is not too common, but i couldn’t find any guide on google.
I want to make a planet for Space Engineers in fact the earth. I found a heightmap an google and want to fit that on the planet. The planet is handeled like a cube, it has a square texture for every side.
I cut the heightmap into the parts for the sides already, but i don’t know, how i get the upper and the lower side so, that they fit together. I was tring to shrink them together, but non of the programs i tryed was able to do that

I’ll add some pictures, thats its clear:

The resolution of the heightmap is 8192x8192 and the resolution for every side is 2048x2048.
The other picture shows what the sides of the cube are.

I hope you can help.

Sulas

#2

why in god’s name would the planet be handled like a cube?

in any case, you’re gonna have a hell of a time getting the poles to work because the image you’re using as the texture is warped to work with a sphere. the top and bottom almost useless to you.

if you really must go this route you could texture a sphere with that map using the default UV layout. then create a new uv set. then cut off the top and bottom 1/3 of the sphere off in this new uv set. shoot a projection straight down on the Y axis. this should give you two circles for your poles and a rectangle for your sides. stretch out the circles that act as your poles into squares and relax the uv’s until the distortion is as fixed as possible. then bake the texture from the original UV set to the new UV set. once you’ve done that you should be able to move the UV’s from your cube into the right spot on this warped image you made and the seems should line up.

or just use a sphere and be done in 30 seconds.