Get a vector pointing in the camera's direction

[unyxium (Martin Ibbett)]

How can I get a vector pointing in the direction the camera faces?

I already tried this but it keeps returning None.

v = Vector((0,0,-1)) #Down vector
v.rotate(camera.rotation_euler)

[init_pixel (missing_field)]

@unyxium

it keeps returning None.

What keeps returning None?
The rotate method has no return because it rotates the Vector in place.

[unyxium (Martin Ibbett)]

ah, of course, I completely missed that!