/*!
* @param world Vixen 3D world
* Initializes the Vixen 3D environment for the given world.
* If you do not provide an initial world, one is created for you.
* This function does not start 3D display - RunVixen does that.
* The world can only be initialized once - subsequent calls do nothing.
*
* @return -> Vixen SharedWorld or null if initialization failed
*/
static public SharedWorld StartVixen(SharedWorld world)
{
if (world == null)
{
world = new Viewer3D();
}
if ((world == null) || !world.OnInit())
{
LogError("cannot initialize Vixen");
return(null);
}
world.MakeLock();
if (UsePhysics)
{
Physics.Startup();
}
return(world);
}
internal static HandleRef getCPtr(Viewer3D obj)
{
return((obj == null) ? new HandleRef(null, IntPtr.Zero) : obj.swigCPtr);
}