diff --git a/ballance_blender_plugin/__init__.py b/ballance_blender_plugin/__init__.py
index fed0ab8..08e4df7 100644
--- a/ballance_blender_plugin/__init__.py
+++ b/ballance_blender_plugin/__init__.py
@@ -8,14 +8,20 @@ bl_info={
 	"support":"TESTING"
 }
 
-# import system
+# ============================================= import system
 import bpy,bpy_extras
 # import my code (with reload)
 if "bpy" in locals():
     import importlib
     if "bm_import_export" in locals():
         importlib.reload(bm_import_export)
-from . import bm_import_export
+    if "floor_rail_uv" in locals():
+        importlib.reload(floor_rail_uv)
+    if "utils" in locals():
+        importlib.reload(utils)
+from . import utils, bm_import_export, floor_rail_uv
+
+# ============================================= func block
 
 class ImportBM(bpy.types.Operator, bpy_extras.io_utils.ImportHelper):
     """Load a Ballance Map File"""
@@ -53,19 +59,56 @@ class ExportBM(bpy.types.Operator, bpy_extras.io_utils.ExportHelper):
     def execute(self, context):
         bm_import_export.export_bm(context, self.filepath, self.export_mode, self.export_target, self.no_component_suffix)
         return {'FINISHED'}
-        
+
+# ============================================= menu system
+
+class RailUVOperator(bpy.types.Operator):
+    """Create a UV for rail"""
+    bl_idname = "ballance.rail_uv"
+    bl_label = "Create Rail UV"
+    bl_options = {'UNDO'}
+
+    def execute(self, context):
+        floor_rail_uv.create_rail_uv()
+        return {'FINISHED'}
+
+class FloorUVOperator(bpy.types.Operator):
+    """Virtoolize the UV of floor"""
+    bl_idname = "ballance.floor_uv"
+    bl_label = "Virtoolize floor UV"
+    bl_options = {'UNDO'}
+
+    def execute(self, context):
+        floor_rail_uv.virtoolize_floor_uv()
+        return {'FINISHED'}
+
+class ThreeDViewerMenu(bpy.types.Menu):
+    bl_label = "Ballance 3D"
+    bl_idname = "OBJECT_MT_ballance3d_menu"
+
+    def draw(self, context):
+        layout = self.layout
+
+        layout.operator("ballance.rail_uv")
+        layout.operator("ballance.floor_uv")
+
+# ============================================= blender call system
+
 classes = (
     ImportBM,
-    ExportBM
+    ExportBM,
+    RailUVOperator,
+    FloorUVOperator,
+    ThreeDViewerMenu
 )
 
 def menu_func_bm_import(self, context):
     self.layout.operator(ImportBM.bl_idname, text="Ballance Map (.bm)")
-
-
 def menu_func_bm_export(self, context):
     self.layout.operator(ExportBM.bl_idname, text="Ballance Map (.bm)")
-
+def menu_func_ballance_3d(self, context):
+    layout = self.layout
+    layout.menu(ThreeDViewerMenu.bl_idname)
 
 def register():
     for cls in classes:
@@ -73,11 +116,15 @@ def register():
         
     bpy.types.TOPBAR_MT_file_import.append(menu_func_bm_import)
     bpy.types.TOPBAR_MT_file_export.append(menu_func_bm_export)
+
+    bpy.types.VIEW3D_HT_header.append(menu_func_ballance_3d)
         
 def unregister():
     bpy.types.TOPBAR_MT_file_import.remove(menu_func_bm_import)
     bpy.types.TOPBAR_MT_file_export.remove(menu_func_bm_export)
     
+    bpy.types.VIEW3D_HT_header.remove(menu_func_ballance_3d)
+
     for cls in classes:
         bpy.utils.unregister_class(cls)
     
diff --git a/ballance_blender_plugin/floor_rail_uv.py b/ballance_blender_plugin/floor_rail_uv.py
new file mode 100644
index 0000000..7d1fa43
--- /dev/null
+++ b/ballance_blender_plugin/floor_rail_uv.py
@@ -0,0 +1,34 @@
+import bpy,bmesh
+from . import utils
+
+def create_rail_uv():
+    meshList = []
+    for obj in bpy.context.selected_objects:
+        if obj.type != 'MESH':
+            continue
+
+        if obj.data.uv_layers.active.data == None:
+            utils.ShowMessageBox("You should create a UV layer for this object firstly. Then execute this operator.", "No UV layer", 'ERROR')
+            return
+        
+        meshList.append(obj.data)
+    
+    for mesh in meshList:
+        # vecList = mesh.vertices[:]
+        uv_layer = mesh.uv_layers.active.data
+        for poly in mesh.polygons:
+            for loop_index in range(poly.loop_start, poly.loop_start + poly.loop_total):
+                # index = mesh.loops[loop_index].vertex_index
+                uv_layer[loop_index].uv[0] = 0 # vecList[index].co[0]
+                uv_layer[loop_index].uv[1] = 1 # vecList[index].co[1]
+
+
+def virtoolize_floor_uv():
+    pass
+
+def mesh_triangulate(me):
+    bm = bmesh.new()
+    bm.from_mesh(me)
+    bmesh.ops.triangulate(bm, faces=bm.faces)
+    bm.to_mesh(me)
+    bm.free()
\ No newline at end of file
diff --git a/ballance_blender_plugin/utils.py b/ballance_blender_plugin/utils.py
new file mode 100644
index 0000000..1e247dd
--- /dev/null
+++ b/ballance_blender_plugin/utils.py
@@ -0,0 +1,8 @@
+import bpy
+
+def ShowMessageBox(message = "", title = "Message Box", icon = 'INFO'):
+
+    def draw(self, context):
+        self.layout.label(text=message)
+
+    bpy.context.window_manager.popup_menu(draw, title = title, icon = icon)
\ No newline at end of file