Add option in the CTRL-M dialog to invert axes

[RealDeuce]

Some people prefer their axes inverted when using a spacemouse. With this, you can invert any set of axes you want.

[supermerill]

Merged.

I didn't see any code for the ctrl+M, isn't this somethign specific with your mouse? Also how these config are changed? you have to edit the config file manually?

[RealDeuce]

CTRL+M binding is in src/slic3r/GUI/GLCanvas3D.cpp:GLCanvas3D::on_char() (case WXK_CONTROL_M:). It shows a config dialog for the 3D mouse (if a 3D mouse is present).

[RealDeuce]

Link to line