There doesn't seem to be an option to set the angle jitter to direction in the brush settings. This would be very helpful for edge control in digital painting. With this setting the brush flips horizontally, depending on whether you're painting left to right or right to left. The equivalent in Photoshop is in brush settings under Shade Dynamics. I posted screenshots of what I mean below:
https://imgur.com/a/PozqTmHhttps://imgur.com/a/4ZiC5iT