Continue Blender Web parity task handoff

tools/web/check-action-armature-roll-clear-desktop.py

@@ -0,0 +1,160 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import math
+import os
+import pathlib
+import shutil
+import sys
+import tempfile
+
+import bpy
+
+
+ARMATURE_NAME = "WebGapArmatureRollClearArmature"
+OBJECT_NAME = "WebGapArmatureRollClearObject"
+BONE_NAME = "WebGapArmatureRollClearBone"
+INITIAL_ROLL = math.pi / 4.0
+TARGET_ROLL = 0.0
+
+
+def vector(value):
+    return [round(float(component), 6) for component in value]
+
+
+def matrix_flat(value):
+    return [round(float(component), 6) for column in value for component in column]
+
+
+def ensure_edit_mode():
+    obj = bpy.data.objects.get(OBJECT_NAME)
+    armature = bpy.data.armatures.get(ARMATURE_NAME)
+    if armature is None or obj is None or obj.type != "ARMATURE" or obj.data != armature:
+        raise RuntimeError("armature.roll_clear fixture is missing")
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    if obj.mode != "EDIT":
+        bpy.ops.object.mode_set(mode="EDIT")
+    return armature
+
+
+def state_report():
+    armature = ensure_edit_mode()
+    bone = armature.edit_bones.get(BONE_NAME)
+    if bone is None:
+        raise RuntimeError("armature.roll_clear bone is missing")
+    return {
+        "object": OBJECT_NAME,
+        "armature": ARMATURE_NAME,
+        "activeBone": armature.edit_bones.active.name if armature.edit_bones.active else None,
+        "bones": [{
+            "name": bone.name,
+            "roll": round(float(bone.roll), 6),
+            "selected": bool(bone.select),
+            "hidden": bool(bone.hide),
+            "head": vector(bone.head),
+            "tail": vector(bone.tail),
+            "matrix": matrix_flat(bone.matrix),
+        }],
+    }
+
+
+def stable_state(state):
+    return {
+        "object": state["object"],
+        "armature": state["armature"],
+        "activeBone": state["activeBone"],
+        "bones": [{key: state["bones"][0][key] for key in ("name", "roll", "selected", "hidden", "head", "tail", "matrix")}],
+    }
+
+
+def validate_input(before):
+    if len(before["bones"]) != 1 or before["bones"][0]["name"] != BONE_NAME:
+        raise RuntimeError(f"unexpected armature.roll_clear bones: {before}")
+    bone = before["bones"][0]
+    if abs(bone["roll"] - INITIAL_ROLL) <= 1e-5 and bone["selected"] and not bone["hidden"]:
+        return False
+    if abs(bone["roll"] - TARGET_ROLL) <= 1e-5 and bone["selected"] and not bone["hidden"]:
+        return True
+    raise RuntimeError(f"unexpected armature.roll_clear state: {before}")
+
+
+def run_operator(already_cleared):
+    armature = ensure_edit_mode()
+    bone = armature.edit_bones[BONE_NAME]
+    bone.select = True
+    armature.edit_bones.active = bone
+    poll = bool(bpy.ops.armature.roll_clear.poll())
+    if not poll:
+        raise RuntimeError("ARMATURE_OT_roll_clear poll failed")
+    if not already_cleared:
+        result = bpy.ops.armature.roll_clear(roll=TARGET_ROLL)
+        if result != {"FINISHED"}:
+            raise RuntimeError(f"ARMATURE_OT_roll_clear returned {result}")
+    roll = float(bone.roll)
+    bpy.ops.object.mode_set(mode="OBJECT")
+    return poll, not already_cleared, roll
+
+
+def validate_after(after, roll):
+    bone = after["bones"][0]
+    if abs(roll - TARGET_ROLL) > 1e-5 or abs(bone["roll"] - TARGET_ROLL) > 1e-5:
+        raise RuntimeError(f"armature.roll_clear did not clear roll: {after}")
+    if not bone["selected"] or bone["hidden"]:
+        raise RuntimeError(f"armature.roll_clear changed selection/visibility: {after}")
+    if bone["head"] != [0.0, 0.0, 0.0] or bone["tail"] != [0.0, 2.0, 0.0]:
+        raise RuntimeError(f"armature.roll_clear changed geometry: {after}")
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --factory-startup --python check-action-armature-roll-clear-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    before = state_report()
+    already_cleared = validate_input(before)
+    poll, changed, roll = run_operator(already_cleared)
+    after = state_report()
+    validate_after(after, roll)
+
+    bpy.ops.object.mode_set(mode="OBJECT")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-armature-roll-clear-reopen-", suffix=".blend")
+    os.close(descriptor)
+    temporary_path = pathlib.Path(temporary)
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=str(temporary_path), check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=str(temporary_path), load_ui=False)
+        reopened = state_report()
+        if stable_state(reopened) != stable_state(after):
+            raise RuntimeError(f"armature.roll_clear save/reopen drift: {after} != {reopened}")
+        shutil.copyfile(temporary_path, fixture)
+        report = {
+            "schemaVersion": 1,
+            "task": "M16-GAP-00249",
+            "operation": "ARMATURE_ROLL_CLEAR_DESKTOP",
+            "fixture": str(fixture),
+            "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+            "before": before,
+            "after": reopened,
+            "bone": BONE_NAME,
+            "roll": round(roll, 6),
+            "poll": poll,
+            "operatorStatus": "FINISHED" if changed else "SKIPPED_ALREADY_APPLIED",
+            "mainMutation": "ROLL_CLEARED_TO_ZERO" if changed else "ROLL_ALREADY_ZERO",
+            "saveReopen": "EXACT",
+            "blenderVersion": bpy.app.version_string,
+        }
+        output.parent.mkdir(parents=True, exist_ok=True)
+        output.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
+        print(f"armature-roll-clear-desktop-ok bone={BONE_NAME} roll=0 saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"armature-roll-clear-desktop-failed: {error}")
+        raise SystemExit(1)