The function Atan2 would be nice in order to calculate angles between two points. atan2 is in javascript and c++ so it should be easy to add.
It already exists but is not available from the “complex operations” panel but in the “Other functions” panel (in the “Mathematic tools” category). Its syntax is straightforward :
atan2(y,x)Oh, true… delete this post then. And sorry :-/
No problem 