Right now the ‘fish eye’ tool is a glorified ellipse tool, it can quite literally only draw ellipses. You can draw on one axis out of 3. You need to use a total of 3 different perspective rulers (2 fish eye and 1 vanishing point) to draw a box in fish-eye perspective. It would be nice to be able to draw a simple fish-eye box with a single fish-eye ruler.
Here is a fisheye box I drew using one fisheye ruler
Thank you
Hey couldn’t agree more!
It would be amazing to see these tool get a bit more love especially for the fish eye one 
Here is a great reference of how those vanishing point are set up usually!
I just tried to use the fish eye point assistant for the first time and now I’m seeing that it does indeed just draw ellipses between the points.
This is not accurate to how curvilinear perspective actually works, making the tool useless no matter how many of them you use.
