Thanks Frenchy Pilou for this illustration !.
Some détails concerning the script close to your proposition :

- In fact, i just need contours to be projected, not surfaces.
- Possibility to rotate a group of contours in the same time : interest of a script.
- Possibility to rotate on 0,X,Y plane(ground) contours which are not in the X,Z or Y,Z plan (your exemple show object in the Y,Z plan, axes behind object make me think about it).

Bye,

Pierre.

PS : I could pay for this script if someone is interested !(around 50 Euros ).