But then you have to figure out how to transfer the drawing of the head onto the curved surface, and how you do that is going to determine how the projections look.
No, you can ignore that part. The image isn’t showing how to accurately draw a head onto a surface, it’s showing how this given head drawing would look in different projections.
But then you have to figure out how to transfer the drawing of the head onto the curved surface, and how you do that is going to determine how the projections look.
No, you can ignore that part. The image isn’t showing how to accurately draw a head onto a surface, it’s showing how this given head drawing would look in different projections.
Projections from what? You don’t need a projection for a drawing, it’s already a 2d image.
Yes, again, that’s the point.
It assumes the sphere projection is correct, and shows how each of the 2D projections isn’t correct. This isn’t hard.