add "Generate Triangle Strips" option to enable faster .msh iteration

addons/io_scene_swbf_msh/__init__.py

@@ -60,14 +60,11 @@ from .msh_scene import create_scene
 from .msh_scene_save import save_scene
 from .msh_material_properties import *
 
-# ExportHelper is a helper class, defines filename and
+class ExportMSH(Operator, ExportHelper):
-# invoke() function which calls the file selector.
+    """ Export the current scene as a SWBF .msh file. """
-class ExportSomeData(Operator, ExportHelper):
-    """This appears in the tooltip of the operator and in the generated docs"""
-    bl_idname = "export_test.some_data"  # important since its how bpy.ops.import_test.some_data is constructed
-    bl_label = "Export Some Data"
 
-    # ExportHelper mixin class uses this
+    bl_idname = "swbf_msh.export"
+    bl_label = "Export SWBF .msh File"
     filename_ext = ".msh"
 
     filter_glob: StringProperty(
@@ -76,38 +73,31 @@ class ExportSomeData(Operator, ExportHelper):
         maxlen=255,  # Max internal buffer length, longer would be clamped.
     )
 
-    # List of operator properties, the attributes will be assigned
+    generate_triangle_strips: BoolProperty(
-    # to the class instance from the operator settings before calling.
+        name="Generate Triangle Strips",
-    use_setting: BoolProperty(
+        description="Triangle strip generation can be slow for meshes with thousands of faces "
-        name="Example Boolean",
+                    "and is off by default to enable fast mesh iteration.\n\n"
-        description="Example Tooltip",
+                    "In order to improve runtime performance and reduce munged model size you are "
-        default=True,
+                    "**strongly** advised to turn it on for your 'final' export!",
-    )
+        default=False
-
-    type: EnumProperty(
-        name="Example Enum",
-        description="Choose between two items",
-        items=(
-            ('OPT_A', "First Option", "Description one"),
-            ('OPT_B', "Second Option", "Description two"),
-        ),
-        default='OPT_A',
     )
 
     def execute(self, context):
         with open(self.filepath, 'wb') as output_file:
-            save_scene(output_file, create_scene())
+            save_scene(
+                output_file=output_file,
+                scene=create_scene(generate_triangle_strips=self.generate_triangle_strips))
 
         return {'FINISHED'}
 
 # Only needed if you want to add into a dynamic menu
 def menu_func_export(self, context):
-    self.layout.operator(ExportSomeData.bl_idname, text="SWBF msh (.msh)")
+    self.layout.operator(ExportMSH.bl_idname, text="SWBF msh (.msh)")
 
 def register():
     bpy.utils.register_class(MaterialProperties)
     bpy.utils.register_class(MaterialPropertiesPanel)
-    bpy.utils.register_class(ExportSomeData)
+    bpy.utils.register_class(ExportMSH)
 
     bpy.types.TOPBAR_MT_file_export.append(menu_func_export)
     bpy.types.Material.swbf_msh = bpy.props.PointerProperty(type=MaterialProperties)
@@ -116,11 +106,8 @@ def register():
 def unregister():
     bpy.utils.unregister_class(MaterialProperties)
     bpy.utils.unregister_class(MaterialPropertiesPanel)
-    bpy.utils.unregister_class(ExportSomeData)
+    bpy.utils.unregister_class(ExportMSH)
     bpy.types.TOPBAR_MT_file_export.remove(menu_func_export)
 
 if __name__ == "__main__":
     register()
-
-    # test call
-    # bpy.ops.export_test.some_data('INVOKE_DEFAULT')

addons/io_scene_swbf_msh/msh_scene.py

@@ -44,7 +44,7 @@ class Scene:
     materials: Dict[str, Material] = field(default_factory=dict)
     models: List[Model] = field(default_factory=list)
 
-def create_scene() -> Scene:
+def create_scene(generate_triangle_strips: bool) -> Scene:
     """ Create a msh Scene from the active Blender scene. """
 
     scene = Scene()
@@ -55,7 +55,14 @@ def create_scene() -> Scene:
 
     scene.models = gather_models()
     scene.models = sort_by_parent(scene.models)
-    scene.models = create_models_triangle_strips(scene.models)
+
+    if generate_triangle_strips:
+        scene.models = create_models_triangle_strips(scene.models)
+    else:
+        for model in scene.models:
+            if model.geometry:
+                for segment in model.geometry:
+                    segment.triangle_strips = segment.triangles
 
     if has_multiple_root_models(scene.models):
         scene.models = reparent_model_roots(scene.models)