how to cut image ? like the sky image in jme3test.scene.TestSceneLoading

:?

hello everyone :

I run this test program : jme3test.scene.TestSceneLoading.

I know this sky image is making up by 6 small pictures,

I want to know how to cut the image perfectly , which tools you use for splitting it? :wink:

Several ways, there are some for free in the internet

or photoshop and lot's of time,

and last skymap generators like https://www.ogre3d.org/forums/viewtopic.php?f=11&t=56125