Hi James, so what I meant by "flat to the screen" is having an arrowhead drawn as if it was in a 2D vector program, like it's always the same proportions just rotated only in the screen plane like these:



So all those arrowheads above all have the same area of filled pixels on the screen.

But that video you linked to makes me wonder if I'm not getting the right idea since it shows some arrowheads that appear to have different proportions and filled areas like here:



But the image you linked to looks like all the same pixel filled area like in the first image above...

- Michael