Recently, I finally started a hobby I’ve been thinking about for a long time, i.e., designing my own map projections. This one has such a simple but clever idea that I wouldn’t be surprised to hear it’s an already known one.
Basically, longitude is scaled by the cosine of the corresponding latitude, like in the sinusoidal projection. But then latitude is scaled by its own sine to avoid those sharp poles (and to emphasize the areas near the equator), and a constant to make it a circle.
So, does anyone know a pre-existing name for this? Alternatively, feel free to suggest a new name for it.


Do you do requests?
I believe we are in dire need of more oblique cylindrical and polyhedral projections. Too many maps are for when you want to go somewhere by plane/ship/car, but I don’t have any of those so I couldn’t care less how useful they are for navigation.
I like how the top one looks like the Pacific Ocean just went “okay, these bits of land are cool, all the rest of you fuck off to the right half of this projection”
I’d quite like to see an oblique one that uses this great circle as the tangent line. It’s the longest straight-line distance over land, and it’d be a straight line in the middle of the map if depicted like this