feat(auto_export): experimenting with the insane workarounds needed to get access to standard gltf exporter settings

* got a basic working version that runs the standard exporter with some overrides,
deletes the temporary exported gltf file, extracts the scene level settings etc
 * convoluted as hell , but still better than the alternatives

tools/gltf_auto_export/__init__.py

@@ -11,6 +11,8 @@ bl_info = {
     "category": "Import-Export"
 }
 import bpy
+from bpy.types import Context
+from bpy.props import (StringProperty, BoolProperty, PointerProperty)
 
 from .auto_export.operators import AutoExportGLTF
 from .auto_export.tracker import AutoExportTracker
@@ -39,6 +41,94 @@ from .ui.operators import (SCENES_LIST_OT_actions)
 This is a workaround needed because of the way the settings are stored , perhaps there is a better way to deal with it ? ie by calling the AutoExportGLTF operator from the auto_export function ?
 """
 
+from io_scene_gltf2 import (GLTF_PT_export_main, GLTF_PT_export_include)
+
+class Testing_PT_MainPanel(bpy.types.Panel):
+    bl_idname = "Testing_PT_MainPanel"
+    bl_label = ""
+    bl_space_type = 'VIEW_3D'
+    bl_region_type = 'UI'
+    bl_category = "Gltf auto_export"
+    bl_context = "objectmode"
+
+
+    def draw_header(self, context):
+        layout = self.layout
+        name = context.object.name if context.object != None else ''
+        layout.label(text="Gltf auto export ")
+
+    def draw(self, context):
+        layout = self.layout
+        object = context.object
+        collection = context.collection
+
+        layout.label(text="MAKE SURE TO CLICK ON 'REMEMBER EXPORT SETTINGS' !!")
+        op = layout.operator("EXPORT_SCENE_OT_gltf", text='Gltf settings')#'glTF 2.0 (.glb/.gltf)')
+        #op.export_format = 'GLTF_SEPARATE'
+        op.use_selection=True
+        op.will_save_settings=True
+        op.use_visible=True # Export visible and hidden objects. See Object/Batch Export to skip.
+        op.use_renderable=True
+        op.use_active_collection = True
+        op.use_active_collection_with_nested=True
+        op.use_active_scene = True
+        op.filepath="dummy"
+
+        #print("GLTF_PT_export_main", GLTF_PT_export_main.bl_parent_id)
+
+
+# wrapper operator
+"""class WrapperOperator(bpy.types.Operator):
+    bl_idname = "node.delete"
+    bl_label = "Delete"
+
+    @classmethod
+    def poll(cls, context):
+        return True
+
+    def execute(self, context):
+        # unregister wrapper replacement operator
+        bpy.utils.unregister_class(DeleteOperator)
+        # call original native operator
+        bpy.ops.node.delete()
+        # register back the wrapper
+        bpy.utils.register_class(DeleteOperator)
+        return {'FINISHED'}"""
+
+
+class GLTF_PT_export_main2(bpy.types.Panel):
+    bl_space_type = 'VIEW_3D'
+    bl_region_type = 'UI'
+    bl_label = ""
+    bl_parent_id = "Testing_PT_MainPanel"
+    bl_options = {'HIDE_HEADER'}
+
+
+    '''@classmethod
+    def poll(cls, context):
+        sfile = context.space_data
+        operator = sfile.active_operator
+
+        return operator.bl_idname == "EXPORT_SCENE_OT_gltf"'''
+
+    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, 'export_format')
+        if operator.export_format == 'GLTF_SEPARATE':
+            layout.prop(operator, 'export_keep_originals')
+            if operator.export_keep_originals is False:
+                layout.prop(operator, 'export_texture_dir', icon='FILE_FOLDER')
+        if operator.export_format == 'GLTF_EMBEDDED':
+            layout.label(text="This is the least efficient of the available forms, and should only be used when required.", icon='ERROR')
+
+        layout.prop(operator, 'export_copyright')
+        layout.prop(operator, 'will_save_settings')"""
 
 #see here for original gltf exporter infos https://github.com/KhronosGroup/glTF-Blender-IO/blob/main/addons/io_scene_gltf2/__init__.py
 classes = [
@@ -60,7 +150,11 @@ classes = [
     GLTF_PT_auto_export_collections_list,
     GLTF_PT_auto_export_gltf,
 
-    AutoExportTracker
+    AutoExportTracker,
+
+    Testing_PT_MainPanel,
+    GLTF_PT_export_main2,
+
 ]
 
 def menu_func_import(self, context):
@@ -76,6 +170,8 @@ def post_save(scene, depsgraph):
     bpy.context.window_manager.auto_export_tracker.save_handler( scene, depsgraph)
 
 
+
+
 def register():
     for cls in classes:
         bpy.utils.register_class(cls)
@@ -86,6 +182,18 @@ def register():
     # add our addon to the toolbar
     bpy.types.TOPBAR_MT_file_export.append(menu_func_import)
 
+    bpy.types.WindowManager.was_good_operator = BoolProperty(default=False)
+    bpy.types.Scene.was_good_operator = BoolProperty(default=False)
+
+    #GLTF_PT_export_main.bl_parent_id = "Testing_PT_MainPanel"
+    #GLTF_PT_export_include.bl_parent_id = "Testing_PT_MainPanel"
+    """try:
+        bpy.app.timers.unregister(watch_schema)
+    except Exception as error:
+        print("failed to unregister", error)
+        pass"""
+
+
 def unregister():
     for cls in classes:
         bpy.utils.unregister_class(cls)
@@ -95,5 +203,7 @@ def unregister():
     bpy.app.handlers.save_post.remove(post_save)
 
    
+
+
 if "gltf_auto_export" == "__main__":
     register()

tools/gltf_auto_export/auto_export/tracker.py

@@ -47,9 +47,101 @@ class AutoExportTracker(PropertyGroup):
         # all our logic is done, mark this as done
         print("EXPORT DONE")
 
+
+    @classmethod
+    def gltf_exporter_handler(cls):
+        # FOr some reason, the active operator here is always None, so using a workaround 
+        # active_operator = bpy.context.active_operator 
+        print("here", bpy.context.window_manager.was_good_operator)
+       
+        if bpy.context.window_manager.was_good_operator:
+            dummy_file_path = "/home/ckaos/projects/bevy/Blender_bevy_components_worklflow/testing/bevy_example/assets/dummy.glb"
+
+            import os
+            if os.path.exists(dummy_file_path):
+                print("dummy file exists, assuming it worked")
+                os.unlink(dummy_file_path)
+
+                # get the parameters
+                scene = bpy.context.scene
+                print("scene", scene["glTF2ExportSettings"])
+                if "glTF2ExportSettings" in scene:
+                    settings = scene["glTF2ExportSettings"]
+                    print("gltf settings", dict(settings))
+
+                # now reset the original gltf_settings
+                if getattr(cls, "existing_gltf_settings", None) != None:
+                    print("resetting original gltf settings")
+                    scene["glTF2ExportSettings"] = cls.existing_gltf_settings
+                else:
+                    print("no pre_existing settings")
+                    if "glTF2ExportSettings" in scene:
+                        del scene["glTF2ExportSettings"]
+                cls.existing_gltf_settings = None
+
+                bpy.context.window_manager.was_good_operator = False
+                return None
+            
+
+        else:
+            try:
+                bpy.app.timers.unregister(cls.gltf_exporter_handler)
+            except:pass
+            return None
+        return 1
+
     @classmethod
     def deps_update_handler(cls, scene, depsgraph):
         # print("change detection enabled", cls.change_detection_enabled)
+        active_operator = bpy.context.active_operator
+        if active_operator:
+            #print("Operator", active_operator.bl_label, active_operator.bl_idname)
+            if active_operator.bl_idname == "EXPORT_SCENE_OT_gltf" and not bpy.context.window_manager.was_good_operator:
+                try:
+                    bpy.app.timers.unregister(cls.gltf_exporter_handler)
+                except:pass
+                bpy.app.timers.register(cls.gltf_exporter_handler, first_interval=3)
+
+                # we force saving params
+                active_operator.will_save_settings = True
+
+                # we backup any existing gltf export settings, if there where any
+                scene = bpy.context.scene
+                if "glTF2ExportSettings" in scene:
+                    existing_setting = scene["glTF2ExportSettings"]
+                    cls.existing_gltf_settings = existing_setting
+                bpy.context.window_manager.was_good_operator = True
+                
+
+        else:
+            if bpy.context.window_manager.was_good_operator:
+                bpy.context.window_manager.was_good_operator = False
+            """if active_operator.bl_idname == "EXPORT_SCENE_OT_gltf":
+                scene = bpy.context.scene
+                if "glTF2ExportSettings" in scene:
+                    existing_setting = scene["glTF2ExportSettings"]
+                    cls.existing_gltf_settings = existing_setting
+                print("we just executed the correct operator")
+                active_operator.will_save_settings = True
+            else:
+                import os
+                dummy_file_path = "/home/ckaos/projects/bevy/Blender_bevy_components_worklflow/testing/bevy_example/assets/dummy.glb"
+                if os.path.exists(dummy_file_path):
+                    print("dummy file exists")
+                    os.unlink(dummy_file_path)
+                    # get the parameters
+                    scene = bpy.context.scene
+                    settings = scene["glTF2ExportSettings"]
+                    print("gltf settings", dict(settings))
+
+                    # now reset the original gltf_settings
+                    if hasattr(cls, "existing_gltf_settings"):
+                        print("resetting original gltf settings")
+                        scene["glTF2ExportSettings"] = cls.existing_gltf_settings
+                    else:
+                        del scene["glTF2ExportSettings"]"""
+
+
         if scene.name != "temp_scene":
             # print("depsgraph_update_post", scene.name)
             changed_scene = scene.name or ""
@@ -62,6 +154,7 @@ class AutoExportTracker(PropertyGroup):
 
                 # depsgraph = bpy.context.evaluated_depsgraph_get()
                 for obj in depsgraph.updates:
+                    print("depsgraph update", obj)
                     if isinstance(obj.id, bpy.types.Object):
                         # get the actual object
                         object = bpy.data.objects[obj.id.name]
@@ -85,6 +178,10 @@ class AutoExportTracker(PropertyGroup):
             else:
                 cls.changed_objects_per_scene.clear()
 
+        depsgraph = bpy.context.evaluated_depsgraph_get()
+        for update in depsgraph.updates:
+            print("update", update)
+
     def disable_change_detection(self,):
         self.change_detection_enabled = False
         self.__class__.change_detection_enabled = False