Hello
I'm just passing through 
I don't remember how to turn a broken line into a continuous line so that I can have one object guided over another. Indeed, if you have a succession of lines and curves, it is impossible to do as for a cam path
In the meantime I created a spline but it's ugly and difficult to make the spline follow by snapping it on the broken lines.
Thank you Apluche
Hello,
Composite curve (in inserting > curve).
Hi @Zozo_mp ,
Why do you say it's ugly?
If you create your spline by choosing each vertex of your broken lines as a point, you will have a nice curve
Hello Zozo_mp,
On my side I found this =>
Hoping I understood your search.
@+.
AR.
Hello;
And if you create a new sketch by converting all the broken lines:
in theory of the should be able to generate a trajectory from it. (even if it means making a 3D sketch).
And if you... You were going to drink a little foam to digest all this 
unless you were in the tropics 
Thank you AR
Very good answer I adopt.
In addition, I don't remember how to make a cam path. Because if you do anything other than a groove, the contact stops at the end of the first straight.
If we use a continuous curve, even with zigzags, the contact remains, hence the idea of the spline
There is a function that I forgot which allows you to transform a zigzag line into a single line but continuous but poof I forgot (that's who will remind me).
Be well friends 
In the south of France there is no good and in Qatar it can turn into a disaster. As soon as the solieil comes back I send you
To pluche
Good evening @Zozo_mp ,
Perhaps the Tools > Spline Tools > Fit Spline function, which approximates a set of sketch entities by a spline.
Rather effective, with a criterion of proximity (tolerance)...
I think it's composite curve you're looking for @zozo see this message:
Otherwise make a closed part with the cam path and hide it and exclude it from the nomenclature. It works great too!
I love that Thank you
Regards