

For example, painting along seams is a problem because you have to match both sides of the seam.

But painting using my MacBook Trackpad isn't very natural (and therefore not easy), and the textures exported by Cheetah 3D aren't always unwrapped in a way that makes it easy to then paint. I have Cheetah 3D on Mac, which allows me to paint textures straight onto the 3D models, or I can use Cheetah 3D to create a texture image based on the 3D model unwrapped. I'm working on my first SceneKit (3D) game and I can't figure out an easy way to paint 3D textures for my game, to be used as diffuse and normal images etc.
