I can't understand how to use texture region.
I have a png file which has images (sprite sheet) and I must "extract" every image I want.
From here it just says
TextureRegion(texture, 20, 20, 50, 50);
20, 20, 50, 50 describes the portion of the texture,
How can I find which portion has the image I want to extract?
Should I open the png file with Gimp for example? And then I am search for some coordinates? And if yes, how?