Thanks for your answer TIG, using non modifier keys is indeed a bad idea inside a tool, because they are already bound to lots of different tools.
I also discovered that the int values corresponding to keystroke can be accesed like this

valueFor_W_Key = ?W

a bit weird, but it works.

I ended up not using keys

I'm developping a tool class, and i'm in the process of handling keyboard events.
I searched on the online doc, but i can't find a list of correspondence between a keyboard key and a value (the key is passed as an integer).
Do such a list exist ?

like

Sketchup::KEY_A -> 32

etc...

I hope it exists !! And if not, at least that the 'A' key will always map to the same value ?

Wow, i can't believe how reactive you guys are ! Thanks so much for your feedback.

It looks like the Two Point Perspective is the tool i need, thanks for poiting it out.

Although it could be triggered by the send_action command, to control it precisely in ruby afterwards is still problematic : how can i control the amount of shift to apply in ruby ?

The reason i want to do it ? I'm developping a video projector simulator plugin, and i would like the user to be able to 'see' from the projector perspective.

On the image below, i put an image of a projector with a vertical lens shift of 100%. You can see what the projection cone looks like, it is off centered, and i would need to place a camera, and apply two point perspective to match the projection of the video projector.

I hope this clarifies what i want to achieve

Hi

When looking at the camera parameters exposed in ruby, i can't find anything about lens shift, is this something that is planned in the future ?
https://developers.google.com/sketchup/docs/ourdoc/camera