u/ExcitingIncident8715

this is a pretty simple graph which visualizes all the stuff you can do with conic sections. you can change the type of conic here too. it has pair of tangents, tangent at a point, chord with midpoint, chord of contact and a mirror if you want to mirror the graph for some reason

link: https://www.desmos.com/calculator/elwvclcprm

I used a semi-ellipse to make the upper eyelid, and then a graph similar to that in the maxwell-boltzmann gas particle-speed distribution on the bottom eyelid (basically -xe^x) and it turned out pretty cool.

here's the link if u wanna fiddle with it or sum

https://www.desmos.com/calculator/er2lcebydq