Complete M16 action select circle parity

tools/web/generated/M16-GAP-00128.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def mirror_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                for curve in bag.fcurves:
+                    for keyframe in curve.keyframe_points:
+                        keyframe.select_control_point = True
+    window = bpy.context.window
+    screen = window.screen
+    area = next(candidate for candidate in screen.areas if candidate.type == "DOPESHEET_EDITOR")
+    area.spaces.active.ui_mode = "ACTION"
+    region = next(candidate for candidate in area.regions if candidate.type == "WINDOW")
+    with bpy.context.temp_override(window=window, screen=screen, area=area, region=region):
+        if not bpy.ops.action.mirror.poll():
+            raise RuntimeError("ACTION_OT_mirror poll failed in Action editor context")
+        result = bpy.ops.action.mirror(type="XAXIS")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_mirror returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00128.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapMirrorMesh")
+    mesh.from_pydata(
+        [(-1.0, -1.0, 0.0), (1.0, -1.0, 0.0), (1.0, 1.0, 0.0), (-1.0, 1.0, 0.0)],
+        [],
+        [(0, 1, 2, 3)],
+    )
+    obj = bpy.data.objects.new("WebGapMirrorObject", mesh)
+    bpy.context.scene.collection.objects.link(obj)
+    for frame, location in ((1, (1.0, 2.0, 3.0)), (3, (2.0, 4.0, 6.0)), (5, (4.0, 8.0, 12.0))):
+        obj.location = location
+        obj.keyframe_insert(data_path="location", frame=frame, index=-1)
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    mirror_action(obj)
+    bpy.context.scene.frame_set(1)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )