Directional Arrow tool.
In computer science I draw a lot of diagrams of nodes or trees. I spend a lot of time drawing directional arrows neatly. I think it would be awesome if there was a line option that will automatically add an arrow head to my curve or line, and allow me to adjust the curvature of the line if needed. Thanks for listening.
yuchi zou commented
I think it’s also very good to use brush shape recognition to draw arrows like Notability.
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Paper 53 (old version) implemented this pretty cleanly so that when a user would hold down a line (like when we want to draw a straight line with pen tool), gray arrows would pop up. If you tapped the gray arrow, it would appear as an arrowhead, but if you did tap it when it was gray, it would disappear.
I draw a lot of arrows for diagrams and flowcharts—in multiple settings—as well as for mechanisms and reactions in chemistry.
With GoodNotes 5, the ability to draw lines and curves quickly and neatly is amazing. Adding an ability to easily add an arrowhead and customize those to be single-barb/double-barb/different sizes would be an amazing addition.
I have found that the Perfect Shapes functionality in GoodNotes 5 has made my arrows harder to draw than before, which is unfortunate.