for o in selection do(
p = o.pos
p1 = getknotpoint o 1 1 --position of first vert on spline 1
p2 = getknotpoint o 1 2 --position of second vert on spline 2
dist = distance p1 p2
vec = p2-p1 --vector (direction of line)
ss1 = SplineShape pos:[0,0,0]
addNewSpline ss1
addKnot ss1 1 #smooth #line [0,0,0]
addKnot ss1 1 #smooth #line [0,0,dist]
updateshape ss1
ss1.dir = vec
ss1.pos = p1
o.ishidden = true
ss1.name = o.name
)
This script assumes your splines only have two vertices or that the vector (rotation) you're after is the vector between vertex 1 and 2 of the spline. This doesn't rotate the pivot but it will create a new line in place of your old line.
If you find things are backwards, try replacing p2-p1 with p1-p2
Hope that helps.
