選択しなくても可視オブジェクトを全部エクスポートするボタン

mio3_act_custom_menu.py

import bpy

bl_info = {
    "name": "Mio3 ACT Custom Menu",
    "author": "mio",
    "version": (1, 0, 0),
    "blender": (4, 0, 0),
    "location": "3D View > Toolbox > ACT",
    "description": "Asset Creation Toolset のカスタマイズメニュー",
    "category": "Object",
}


def is_act_installed():
    return "multi_fbx_export" in dir(bpy.ops.object)


class MIO3ACTW_OT_ExportVisible(bpy.types.Operator):
    bl_idname = "mesh.mio3actw_export_visible"
    bl_label = "Export Visible"
    bl_description = "Export only visible objects"
    bl_options = {"REGISTER", "UNDO"}

    @classmethod
    def poll(cls, context):
        return context.object is not None and is_act_installed()

    def execute(self, context):

        scene = bpy.context.scene
        act = bpy.context.scene.act

        if len(bpy.data.filepath) == 0 and not act.custom_export_path:
            self.report({"INFO"}, "ACTのExportメニューでディレクトリを設定してください")
            return {"CANCELLED"}
        
        current_selection = [obj for obj in scene.objects if obj.select_get()]
        active_object = bpy.context.active_object

        bpy.ops.object.select_all(action="DESELECT")
        for obj in scene.objects:
            if obj.visible_get():
                obj.select_set(True)
        try:
            # Export
            bpy.ops.object.multi_fbx_export()
        except Exception as e:
            self.report({"ERROR"}, str(e))
            return {"CANCELLED"}
        finally:
            bpy.ops.object.select_all(action="DESELECT")
            for obj in current_selection:
                obj.select_set(True)
            bpy.context.view_layer.objects.active = active_object

        return {"FINISHED"}


class MIO3ACTW_PT_main(bpy.types.Panel):
    bl_label = "ACT Custom Menu"
    bl_idname = "MIO3ACTW_PT_main"
    bl_space_type = "VIEW_3D"
    bl_region_type = "UI"
    bl_category = "ACT"

    def draw(self, context):
        layout = self.layout
        row = layout.row(align=True)
        if is_act_installed():
            row.operator(
                MIO3ACTW_OT_ExportVisible.bl_idname,
                text="Export Visible",
                icon="EXPORT",
            )
            if len(bpy.context.scene.act.export_dir) > 0:
                row.operator("object.open_export_dir", text="", icon="FILEBROWSER")
        else:
            row.label(text="ACTがインストールされていません", icon="ERROR")


def update_panel(self, context):
    is_exist = hasattr(bpy.types, "MIO3ACTW_PT_main")
    category = bpy.context.preferences.addons[__package__].preferences.category

    if is_exist:
        try:
            bpy.utils.unregister_class(MIO3ACTW_PT_main)
        except:
            pass

    MIO3ACTW_PT_main.bl_category = category
    bpy.utils.register_class(MIO3ACTW_PT_main)


class MIO3ACTW_Preferences(bpy.types.AddonPreferences):
    bl_idname = __name__

    category: bpy.props.StringProperty(
        name="Tab Name",
        description="Tab Name",
        default="ACT",
        update=update_panel,
    )

    def draw(self, context):
        layout = self.layout
        layout.prop(self, "category")


classes = [
    MIO3ACTW_Preferences,
    MIO3ACTW_OT_ExportVisible,
    MIO3ACTW_PT_main,
]


def register():

    for c in classes:
        bpy.utils.register_class(c)

    update_panel(None, bpy.context)


def unregister():
    for c in reversed(classes):
        bpy.utils.unregister_class(c)


if __name__ == "__main__":
    register()