[Animats]

That's neat.

Autodesk Fusion already knows how to apply those kinds of constraints. This is an easier way to input them. The general problem is to express "what am I pointing at" in cluttered situations. Just figuring out how to do that was a huge problem in CAD. For decades, you had to have multiple views on screen just to select. The UI for doing it in one view was really tough.

It still doesn't translate well to fat-fingered devices such as tablets and phones. There are lots of construction people who could really use a tablet that has the design, knows where it is in space, and shows what's supposed to go there.