public static void OBJFile(string arg)
{
Console.WriteLine(" Writing X file...");
XFile file = XUtils.ImportOBJ(arg, SharpDX.Matrix.RotationX(SharpDX.MathUtil.PiOverTwo), true, true);
using (FileStream stream = new FileStream(Path.ChangeExtension(arg, ".x"), FileMode.Create))
using (BinaryWriter writer = new BinaryWriter(stream))
{
file.Write(writer);
}
}