Well, I thought I had this licked, but now I am trying to do a full bleed print, and am having trouble. I begin with rectangular art. I first apply perspective to turn the rectangle into a trapezoid. Then I use tube oblique to get the curvature. But this issue is, that the shape I am trying to fit the image to is a conical section, not a cylindrical section, so the radius of the bottom arc of the section is different (smaller) than the radius of the upper arc. So, when I apply tube oblique to match the bottom curvature, the top of the image is curved too much, and does not follow the outline evenly at the top. For my practical purpose, this means that the print will be uneven on the printed cup. See image, the design at the top curves down from the top at each end.
If you have any ideas, please, I could use the help of an experienced shape shifter! Can shape 3D be set up to imitate a conical section?