linesegments with arrow, or arrows method that takes a pair of points

[ParadaCarleton]

Sometimes I just want to draw an arrow going from point A to point B; in that case, linesegments doesn't work (since it's a line, not an arrow), and arrows doesn't work (it's really meant to plot vector fields, rather than a single vector).

This could be fixed either by adding an extra argument to linesegments or to arrows.

[BambOoxX]

This is achievable by providing arrows with the right origin point and the right arrow component lengths
Somehting like

origin_points = rand(Point3,10)
target_points = rand(Point3,10)
arrow_components = (target_points .- origin_points) 
f = Figure()
l = LScene(f[1,1])
scatter!(l,origin_points,color=:red)
scatter!(l,target_points,color=:green)
arrows!(l,origin_points,arrow_components,color = RGBAf(0,0,255,0.5))

Pay attention to the arrowsize correction since an arrow head currently does not "point" at the target not, just its body see #2607 or #1206, #2472

[aplavin]

Available in MakieExtra with a selection of arrowstyles:

As always, feel free to upstream if there's such a desire.

[briochemc]

What's nice about @aplavin's MakieExtra.jl solution is that the pointy arrow precisely points to the end point (instead of a overshooting by the arrow head size).