Initial commit

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

README.md

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+# resetAllVectorNormals
+Blender addon to reset normals and reclculate outside on selected objects. Most useful for flat models.
+
+0.1.0
+
+1. download the addon using the green button and then download .zip or go to the release section
+2. Install and activate the addon inside Blender 3+
+3. select one or more objects
+4. Goto to Object->Apply->Reset All Vector Normals
+5. Done
+
+Notes:
+* Will affect only Meshes
+* Will recalculate ouside all faces
+* Will reset normals
+

__init__.py

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+# ##### 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 3
+#  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 #####
+
+bl_info = {
+    "name": "Reset All Vector Normals on Selected Objects",
+    "author": "Walter Palladino",
+    "version": (0, 1, 0),
+    "blender": (3, 0, 0),
+    "location": "View3D > Object > Apply > Reset All Vector Normals",
+    "description": "Reset All Vector Normals on Selected Objects",
+    "warning": "",
+    "doc_url": "https://github.com/walterpalladino/resetAllVectorNormals#readme",
+    "category": "Object",
+}
+
+
+import bpy
+
+context = bpy.context
+data = bpy.data
+
+
+
+def main(context):
+    # Select only Meshes
+    selected_objects = [obj  for obj in context.selected_objects if obj.type == 'MESH']
+
+    # Iterate on all the meshes
+    for obj in selected_objects:
+        # set the object to active
+        bpy.context.view_layer.objects.active = obj
+        bpy.ops.object.mode_set(mode="EDIT")
+        bpy.ops.mesh.select_mode(type="FACE")
+        bpy.ops.mesh.select_all(action='SELECT')
+
+        # recalculate outside normals 
+        bpy.ops.mesh.normals_make_consistent(inside=False)
+        bpy.ops.mesh.normals_tools(mode='RESET')
+
+        bpy.ops.object.mode_set(mode="OBJECT")
+
+
+class ResetAllVectorNormals(bpy.types.Operator):
+    """Iterate on all selected objects, switch to edit mode, select faces and reset normal vectors"""
+    bl_idname = "object.reset_all_vector_normals"
+    bl_label = "Reset All Vector Normals"
+
+    def execute(self, context):
+        main(context)
+        return {'FINISHED'}
+
+
+def menu_func_setup(self, context):
+    self.layout.operator(ResetAllVectorNormals.bl_idname, text=ResetAllVectorNormals.bl_label)
+
+
+def register():
+    bpy.utils.register_class(ResetAllVectorNormals)
+    bpy.types.VIEW3D_MT_object_apply.append(menu_func_setup)
+
+
+def unregister():
+    bpy.utils.unregister_class(ResetAllVectorNormals)
+    bpy.types.VIEW3D_MT_object_apply.remove(menu_func_setup)
+
+
+if __name__ == "__main__":
+    register()
+