GL Orientation

I was confused by the orientation in 3d space with our model but wanted
to run this change by you;

Basically, as it stands the left side of the GLWidget is 10 and the
right side is -10 but that seems backwards to me as on 2d and 3d graphs
the orientation on the X axis is the opposite. Similarly the top is
-10 and bottom 10.

This just means changing the glOrtho line to;
glOrtho(-10.0, 10.0, -10.0, 10.0, -30.0, 30.0);

I would’ve changed it but i didn’t know if you had it that way for a