Curve tool
I think adding a tool for drawing curves for diagrams that for example engineering students must draw for their notes will be very helpful like the one exists in CollaNote.
11
votes
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Bryce Orchard commented
A possible implementation would be to draw a curve, and upon holding, the drawn curve snaps to become a spline object. Then, dragging points are automatically added at all max, min, and inflection points. You could also possibly tap on the curve to add a draggable spline point.