text: # ##### BEGIN GPL LICENSE BLOCK #####
  #
  #  This program is free software; you can redistribute it and/or
  #  modify it under the terms of the GNU General Public License
  #  as published by the Free Software Foundation; either version 2
  #  of the License, or (at your option) any later version.
  #
  #  This program is distributed in the hope that it will be useful,
  #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  #  GNU General Public License for more details.
  #
  #  You should have received a copy of the GNU General Public License
  #  along with this program; if not, write to the Free Software Foundation,
  #  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  #
  # ##### END GPL LICENSE BLOCK #####
  
  # <pep8-80 compliant>
  
  bl_info = {
      "name": "Wavefront OBJ format",
      "author": "Campbell Barton, Bastien Montagne",
      "version": (3, 8, 0),
      "blender": (2, 81, 6),
      "location": "File > Import-Export",
      "description": "Import-Export OBJ, Import OBJ mesh, UV's, materials and textures",
      "warning": "",
      "doc_url": "{BLENDER_MANUAL_URL}/addons/import_export/scene_obj.html",
      "support": 'OFFICIAL',
      "category": "Import-Export",
  }
  
  if "bpy" in locals():
      import importlib
      if "import_obj" in locals():
          importlib.reload(import_obj)
      if "export_obj" in locals():
          importlib.reload(export_obj)
  
  
  import bpy
  from bpy.props import (
          BoolProperty,
          FloatProperty,
          StringProperty,
          EnumProperty,
          )
  from bpy_extras.io_utils import (
          ImportHelper,
          ExportHelper,
          orientation_helper,
          path_reference_mode,
          axis_conversion,
          )
  
  
  @orientation_helper(axis_forward='-Z', axis_up='Y')
  class ImportOBJ(bpy.types.Operator, ImportHelper):
      """Load a Wavefront OBJ File"""
      bl_idname = "import_scene.obj"
      bl_label = "Import OBJ"
      bl_options = {'PRESET', 'UNDO'}
  
      filename_ext = ".obj"
      filter_glob: StringProperty(
              default="*.obj;*.mtl",
              options={'HIDDEN'},
              )
  
      use_edges: BoolProperty(
              name="Lines",
              description="Import lines and faces with 2 verts as edge",
              default=True,
              )
      use_smooth_groups: BoolProperty(
              name="Smooth Groups",
              description="Surround smooth groups by sharp edges",
              default=True,
              )
  
      use_split_objects: BoolProperty(
              name="Object",
              description="Import OBJ Objects into Blender Objects",
              default=True,
              )
      use_split_groups: BoolProperty(
              name="Group",
              description="Import OBJ Groups into Blender Objects",
              default=False,
              )
  
      use_groups_as_vgroups: BoolProperty(
              name="Poly Groups",
              description="Import OBJ groups as vertex groups",
              default=False,
              )
  
      use_image_search: BoolProperty(
              name="Image Search",
              description="Search subdirs for any associated images "
                          "(Warning, may be slow)",
              default=True,
              )
  
      split_mode: EnumProperty(
              name="Split",
              items=(('ON', "Split", "Split geometry, omits unused verts"),
                     ('OFF', "Keep Vert Order", "Keep vertex order from file"),
                     ),
              )
  
      global_clight_size: FloatProperty(
              name="Clamp Size",
              description="Clamp bounds under this value (zero to disable)",
              min=0.0, max=1000.0,
              soft_min=0.0, soft_max=1000.0,
              default=0.0,
              )
  
      def execute(self, context):
          # print("Selected: " + context.active_object.name)
          from . import import_obj
  
          if self.split_mode == 'OFF':
              self.use_split_objects = False
              self.use_split_groups = False
          else:
              self.use_groups_as_vgroups = False
  
          keywords = self.as_keywords(ignore=("axis_forward",
                                              "axis_up",
                                              "filter_glob",
                                              "split_mode",
                                              ))
  
          global_matrix = axis_conversion(from_forward=self.axis_forward,
                                          from_up=self.axis_up,
                                          ).to_4x4()
          keywords["global_matrix"] = global_matrix
  
          if bpy.data.is_saved and context.preferences.filepaths.use_relative_paths:
              import os
              keywords["relpath"] = os.path.dirname(bpy.data.filepath)
  
          return import_obj.load(context, **keywords)
  
      def draw(self, context):
          pass
  
  
  class OBJ_PT_import_include(bpy.types.Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOL_PROPS'
      bl_label = "Include"
      bl_parent_id = "FILE_PT_operator"
  
      @classmethod
      def poll(cls, context):
          sfile = context.space_data
          operator = sfile.active_operator
  
          return operator.bl_idname == "IMPORT_SCENE_OT_obj"
  
      def draw(self, context):
          layout = self.layout
          layout.use_property_split = True
          layout.use_property_decorate = False  # No animation.
  
          sfile = context.space_data
          operator = sfile.active_operator
  
          layout.prop(operator, 'use_image_search')
          layout.prop(operator, 'use_smooth_groups')
          layout.prop(operator, 'use_edges')
  
  
  class OBJ_PT_import_transform(bpy.types.Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOL_PROPS'
      bl_label = "Transform"
      bl_parent_id = "FILE_PT_operator"
  
      @classmethod
      def poll(cls, context):
          sfile = context.space_data
          operator = sfile.active_operator
  
          return operator.bl_idname == "IMPORT_SCENE_OT_obj"
  
      def draw(self, context):
          layout = self.layout
          layout.use_property_split = True
          layout.use_property_decorate = False  # No animation.
  
          sfile = context.space_data
          operator = sfile.active_operator
  
          layout.prop(operator, "global_clight_size")
          layout.prop(operator, "axis_forward")
          layout.prop(operator, "axis_up")
  
  
  class OBJ_PT_import_geometry(bpy.types.Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOL_PROPS'
      bl_label = "Geometry"
      bl_parent_id = "FILE_PT_operator"
      bl_options = {'DEFAULT_CLOSED'}
  
      @classmethod
      def poll(cls, context):
          sfile = context.space_data
          operator = sfile.active_operator
  
          return operator.bl_idname == "IMPORT_SCENE_OT_obj"
  
      def draw(self, context):
          layout = self.layout
  
          sfile = context.space_data
          operator = sfile.active_operator
  
          layout.row().prop(operator, "split_mode", expand=True)
  
          layout.use_property_split = True
          layout.use_property_decorate = False  # No animation.
  
          col = layout.column()
          if operator.split_mode == 'ON':
              col.prop(operator, "use_split_objects", text="Split by Object")
              col.prop(operator, "use_split_groups", text="Split by Group")
          else:
              col.prop(operator, "use_groups_as_vgroups")
  
  
  class OBJ_PT_export_include(bpy.types.Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOL_PROPS'
      bl_label = "Include"
      bl_parent_id = "FILE_PT_operator"
  
      @classmethod
      def poll(cls, context):
          sfile = context.space_data
          operator = sfile.active_operator
  
          return operator.bl_idname == "EXPORT_SCENE_OT_obj"
  
      def draw(self, context):
          layout = self.layout
          layout.use_property_split = True
          layout.use_property_decorate = False  # No animation.
  
          sfile = context.space_data
          operator = sfile.active_operator
  
          layout.prop(operator, 'use_selection')
          layout.prop(operator, 'use_blen_objects')
          layout.prop(operator, 'group_by_object')
          layout.prop(operator, 'group_by_material')
          layout.prop(operator, 'use_animation')
  
  
  class OBJ_PT_export_transform(bpy.types.Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOL_PROPS'
      bl_label = "Transform"
      bl_parent_id = "FILE_PT_operator"
  
      @classmethod
      def poll(cls, context):
          sfile = context.space_data
          operator = sfile.active_operator
  
          return operator.bl_idname == "EXPORT_SCENE_OT_obj"
  
      def draw(self, context):
          layout = self.layout
          layout.use_property_split = True
          layout.use_property_decorate = False  # No animation.
  
          sfile = context.space_data
          operator = sfile.active_operator
  
          layout.prop(operator, 'global_scale')
          layout.prop(operator, 'path_mode')
          layout.prop(operator, 'axis_forward')
          layout.prop(operator, 'axis_up')
  
  
  class OBJ_PT_export_geometry(bpy.types.Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOL_PROPS'
      bl_label = "Geometry"
      bl_parent_id = "FILE_PT_operator"
      bl_options = {'DEFAULT_CLOSED'}
  
      @classmethod
      def poll(cls, context):
          sfile = context.space_data
          operator = sfile.active_operator
  
          return operator.bl_idname == "EXPORT_SCENE_OT_obj"
  
      def draw(self, context):
          layout = self.layout
          layout.use_property_split = True
          layout.use_property_decorate = False  # No animation.
  
          sfile = context.space_data
          operator = sfile.active_operator
  
          layout.prop(operator, 'use_mesh_modifiers')
          # Property definition disabled, not working in 2.8 currently.
          # layout.prop(operator, 'use_mesh_modifiers_render')
          layout.prop(operator, 'use_smooth_groups')
          layout.prop(operator, 'use_smooth_groups_bitflags')
          layout.prop(operator, 'use_normals')
          layout.prop(operator, 'use_uvs')
          layout.prop(operator, 'use_materials')
          layout.prop(operator, 'use_triangles')
          layout.prop(operator, 'use_nurbs', text="Curves as NURBS")
          layout.prop(operator, 'use_vertex_groups')
          layout.prop(operator, 'keep_vertex_order')
  
  
  @orientation_helper(axis_forward='-Z', axis_up='Y')
  class ExportOBJ(bpy.types.Operator, ExportHelper):
      """Save a Wavefront OBJ File"""
  
      bl_idname = "export_scene.obj"
      bl_label = 'Export OBJ'
      bl_options = {'PRESET'}
  
      filename_ext = ".obj"
      filter_glob: StringProperty(
              default="*.obj;*.mtl",
              options={'HIDDEN'},
              )
  
      # context group
      use_selection: BoolProperty(
              name="Selection Only",
              description="Export selected objects only",
              default=False,
              )
      use_animation: BoolProperty(
              name="Animation",
              description="Write out an OBJ for each frame",
              default=False,
              )
  
      # object group
      use_mesh_modifiers: BoolProperty(
              name="Apply Modifiers",
              description="Apply modifiers",
              default=True,
              )
      # Non working in Blender 2.8 currently.
      # ~ use_mesh_modifiers_render: BoolProperty(
              # ~ name="Use Modifiers Render Settings",
              # ~ description="Use render settings when applying modifiers to mesh objects",
              # ~ default=False,
              # ~ )
  
      # extra data group
      use_edges: BoolProperty(
              name="Include Edges",
              description="",
              default=True,
              )
      use_smooth_groups: BoolProperty(
              name="Smooth Groups",
              description="Write sharp edges as smooth groups",
              default=False,
              )
      use_smooth_groups_bitflags: BoolProperty(
              name="Bitflag Smooth Groups",
              description="Same as 'Smooth Groups', but generate smooth groups IDs as bitflags "
                          "(produces at most 32 different smooth groups, usually much less)",
              default=False,
              )
      use_normals: BoolProperty(
              name="Write Normals",
              description="Export one normal per vertex and per face, to represent flat faces and sharp edges",
              default=True,
              )
      use_uvs: BoolProperty(
              name="Include UVs",
              description="Write out the active UV coordinates",
              default=True,
              )
      use_materials: BoolProperty(
              name="Write Materials",
              description="Write out the MTL file",
              default=True,
              )
      use_triangles: BoolProperty(
              name="Triangulate Faces",
              description="Convert all faces to triangles",
              default=False,
              )
      use_nurbs: BoolProperty(
              name="Write Nurbs",
              description="Write nurbs curves as OBJ nurbs rather than "
                          "converting to geometry",
              default=False,
              )
      use_vertex_groups: BoolProperty(
              name="Polygroups",
              description="",
              default=False,
              )
  
      # grouping group
      use_blen_objects: BoolProperty(
              name="Objects as OBJ Objects",
              description="",
              default=True,
              )
      group_by_object: BoolProperty(
              name="Objects as OBJ Groups ",
              description="",
              default=False,
              )
      group_by_material: BoolProperty(
              name="Material Groups",
              description="",
              default=False,
              )
      keep_vertex_order: BoolProperty(
              name="Keep Vertex Order",
              description="",
              default=False,
              )
  
      global_scale: FloatProperty(
              name="Scale",
              min=0.01, max=1000.0,
              default=1.0,
              )
  
      path_mode: path_reference_mode
  
      check_extension = True
  
      def execute(self, context):
          from . import export_obj
  
          from mathutils import Matrix
          keywords = self.as_keywords(ignore=("axis_forward",
                                              "axis_up",
                                              "global_scale",
                                              "check_existing",
                                              "filter_glob",
                                              ))
  
          global_matrix = (Matrix.Scale(self.global_scale, 4) @
                           axis_conversion(to_forward=self.axis_forward,
                                           to_up=self.axis_up,
                                           ).to_4x4())
  
          keywords["global_matrix"] = global_matrix
          return export_obj.save(context, **keywords)
  
      def draw(self, context):
          pass
  
  
  def menu_func_import(self, context):
      self.layout.operator(ImportOBJ.bl_idname, text="Wavefront (.obj)")
  
  
  def menu_func_export(self, context):
      self.layout.operator(ExportOBJ.bl_idname, text="Wavefront (.obj)")
  
  
  classes = (
      ImportOBJ,
      OBJ_PT_import_include,
      OBJ_PT_import_transform,
      OBJ_PT_import_geometry,
      ExportOBJ,
      OBJ_PT_export_include,
      OBJ_PT_export_transform,
      OBJ_PT_export_geometry,
  )
  
  
  def register():
      for cls in classes:
          bpy.utils.register_class(cls)
  
      bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
      bpy.types.TOPBAR_MT_file_export.append(menu_func_export)
  
  
  def unregister():
      bpy.types.TOPBAR_MT_file_import.remove(menu_func_import)
      bpy.types.TOPBAR_MT_file_export.remove(menu_func_export)
  
      for cls in classes:
          bpy.utils.unregister_class(cls)
  
  
  if __name__ == "__main__":
      register()
  