How can I create the following shape (in 3D, similar to a torus). I only want one of the "circle shapes" (i.e not the two you see overlapping). Any ideas how one might create this?
Similar to this maybe (i.e. the difference in thinkness between on side of the ring and the other side not quite as extreme as above). I am talking about the bottom right object of the objects in the image below. Also maybe without the sharp line on top. Clarification: I need the bottom right object of the below image (or something similar to it with the first image above as inspiration), not the other open objects seen below as well.