mouse control turning 360 degrees
 

when using a keyboard and mouse for navigating around a scene, (how) is it possible to turn around completely 360 degrees?

Once the mouse pointer reaches the edge/border of the window the head stops turning.

I would like to be able to stand still on the same point and turn around completely.

Is this possible with mouse and keyboard controls?

(I've searched to forum but got no hits)

Many thanks :)

Can you post your keyboard/mouse navigation code?