Answered
Hi, I want to be able to drag "A" to move the vector "AB" without changing its magnitude or direction and then be able to drag "B" to change vectors magnitude and direction without moving "A".
https://www.geogebra.org/m/kgsqqbeg
I found this link that seems like what I was after but it is very old and didn't work consistently.
The same question 
point A
circle AB
segment AB
point D=(x(A),y(A))
hide point A
drag with the right button point D
move point B
hide c
In the attachment a solution with script in A onUpdate
Thank you to both of you for the great (and fast) solutions!
Cheers, David.
create the vector AB
then hide A
move the vector or move B
Comments have been locked on this page!