Added center and scale

src/programs/viewer.rs

@@ -57,6 +57,8 @@ fn main() {
         }
     }
 
+    model.center_and_scale();
+
     let mut events_loop = EventsLoop::new();
     let window = WindowBuilder::new().with_visibility(false);
     let context = glutin::ContextBuilder::new().with_depth_buffer(24);