From GeoGebra Manual
- SetSpinSpeed( <Number> )
- Sets the rotational speed of 3D view about the axis currently displayed in vertical position. The sign and value of the entered Number define the rotation as follows:
- if Number is positive, then the 3D view rotates counter clockwise.
- if Number is negative, then the 3D view rotates clockwise.
- if Number is 0 there will be no rotation of the 3D view.