/// <summary>
/// Sets the Spaceball motion callback for the current window.
/// </summary>
/// <param name="func">
/// The new Spaceball motion callback function. See
/// <see cref="SpaceballMotionCallback" />.
/// </param>
/// <remarks>
/// <para>
/// <b>glutSpaceballMotionFunc</b> sets the Spaceball motion callback for the
/// current window. The Spaceball motion callback for a window is called when the
/// window has Spaceball input focus (normally, when the mouse is in the window)
/// and the user generates Spaceball translations. The <i>x</i>, <i>y</i>, and
/// <i>z</i> callback parameters indicate the translations along the X, Y, and Z
/// axes. The callback parameters are normalized to be within the range of -1000
/// to 1000 inclusive.
/// </para>
/// <para>
/// Registering a Spaceball motion callback when a Spaceball device is not
/// available has no effect and is not an error. In this case, no Spaceball
/// motion callbacks will be generated.
/// </para>
/// <para>
/// Passing <c>null</c> to <b>glutSpaceballMotionFunc</b> disables the generation
/// of Spaceball motion callbacks. When a new window is created, no Spaceball
/// motion callback is initially registered.
/// </para>
/// </remarks>
/// <seealso cref="SpaceballMotionCallback" />
// GLUTAPI void APIENTRY glutSpaceballMotionFunc(void (GLUTCALLBACK *func)(int x, int y, int z));
public static void glutSpaceballMotionFunc([In] SpaceballMotionCallback func) {
spaceballMotionCallback = func;
__glutSpaceballMotionFunc(spaceballMotionCallback);
}
private static extern void __glutSpaceballMotionFunc(SpaceballMotionCallback func);