fixes on viewer with Christian

Former-commit-id: 1f5b7daaea2434e07220dcae45b685303936227c

include/igl/viewer/ViewerCore.cpp

@@ -32,6 +32,7 @@ namespace igl {
       SERIALIZE_MEMBER(lighting_factor);
 
       SERIALIZE_MEMBER(trackball_angle);
+      SERIALIZE_MEMBER(rotation_type);
 
       SERIALIZE_MEMBER(model_zoom);
       SERIALIZE_MEMBER(model_translation);
@@ -39,8 +40,6 @@ namespace igl {
       SERIALIZE_MEMBER(model_zoom_uv);
       SERIALIZE_MEMBER(model_translation_uv);
 
-      SERIALIZE_MEMBER(object_scale);
-
       SERIALIZE_MEMBER(camera_zoom);
       SERIALIZE_MEMBER(orthographic);
       SERIALIZE_MEMBER(camera_view_angle);
@@ -65,6 +64,8 @@ namespace igl {
       SERIALIZE_MEMBER(is_animating);
       SERIALIZE_MEMBER(animation_max_fps);
 
+      SERIALIZE_MEMBER(object_scale);
+
       SERIALIZE_MEMBER(viewport);
       SERIALIZE_MEMBER(view);
       SERIALIZE_MEMBER(model);

include/igl/viewer/ViewerData.cpp

@@ -46,6 +46,8 @@ namespace igl {
       SERIALIZE_MEMBER(labels_positions);
       SERIALIZE_MEMBER(labels_strings);
 
+      SERIALIZE_MEMBER(dirty);
+
       SERIALIZE_MEMBER(face_based);
     }