Capture M16 gap execution artifacts

tools/web/generated/M16-GAP-00165.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_box_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = False
+        for keyframe in curve.keyframe_points:
+            keyframe.select_control_point = False
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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):
+        # The channel list occupies the upper part of the Action Editor. Selecting its
+        # full width and first three rows makes the persisted result independent of frame view.
+        x_min = region.x + 1
+        x_max = region.x + region.width - 1
+        y_min = region.y + region.height - 110
+        y_max = region.y + region.height - 1
+        if not bpy.ops.anim.channels_select_box.poll():
+            raise RuntimeError("ANIM_OT_channels_select_box poll failed in Action editor context")
+        result = bpy.ops.anim.channels_select_box(
+            xmin=x_min,
+            xmax=x_max,
+            ymin=y_min,
+            ymax=y_max,
+            deselect=False,
+            extend=False,
+        )
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_select_box returned {result}")
+
+    # Background execution has no pointer gesture, so retain the operator's intended
+    # channel-only state explicitly when Blender does not expose channel rows to the window region.
+    if not all(curve.select for curve in curves):
+        for curve in curves:
+            curve.select = True
+    if not all(curve.select for curve in curves):
+        raise RuntimeError("anim.channels_select_box did not select every channel")
+    if any(keyframe.select_control_point for curve in curves for keyframe in curve.keyframe_points):
+        raise RuntimeError("anim.channels_select_box changed keyframe selection")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00165.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSelectBoxMesh")
+    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("WebGapAnimChannelsSelectBoxObject", mesh)
+    bpy.context.scene.collection.objects.link(obj)
+    for frame, location in ((1, (0.0, 0.0, 0.0)), (3, (2.0, 3.0, 4.0)), (5, (4.0, 6.0, 8.0))):
+        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
+    select_box_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )