This is an early draft of the camera limits UI I designed and implemented for Marmoset Toolbag 2. The Marmoset Viewer scene export needed near/far, latitude/longitude limits on camera motion. This is a UI for defining those bounds and visualizing them in the viewport.
The final design has mouse click-and-drag handles on all the limit edges which I deem unnecessary and IMPURE! But I guess using the viewport center as a cursor does feel like moving widgets around with your nose. The world is not ready for my nose-picker interface paradigm.
Camera Limits - Art by Joe Wilson