Continue Blender Web parity task handoff

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

@@ -0,0 +1,126 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import math
+import os
+import pathlib
+import shutil
+import sys
+import tempfile
+
+import bpy
+
+
+ARMATURE_NAME = "WebGapArmatureCalculateRollArmature"
+OBJECT_NAME = "WebGapArmatureCalculateRollObject"
+BONE_NAME = "WebGapArmatureCalculateRollBone"
+EXPECTED_ROLL = math.pi / 2.0
+
+
+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 state_report():
+    armature = bpy.data.armatures.get(ARMATURE_NAME)
+    obj = bpy.data.objects.get(OBJECT_NAME)
+    if armature is None or obj is None or obj.type != "ARMATURE" or obj.data != armature:
+        raise RuntimeError("armature.calculate_roll fixture is missing")
+    bones = [
+        {
+            "name": bone.name,
+            "head": vector(bone.head_local),
+            "tail": vector(bone.tail_local),
+            "matrix": matrix_flat(bone.matrix_local),
+        }
+        for bone in armature.bones
+    ]
+    bones.sort(key=lambda value: value["name"])
+    return {"object": OBJECT_NAME, "armature": ARMATURE_NAME, "bones": bones}
+
+
+def run_operator(before):
+    if [bone["name"] for bone in before["bones"]] != [BONE_NAME]:
+        raise RuntimeError(f"unexpected calculate_roll input: {before}")
+    bpy.context.view_layer.objects.active = bpy.data.objects[OBJECT_NAME]
+    bpy.data.objects[OBJECT_NAME].select_set(True)
+    if bpy.context.object.mode != "EDIT":
+        bpy.ops.object.mode_set(mode="EDIT")
+    armature = bpy.data.armatures[ARMATURE_NAME]
+    edit_bone = armature.edit_bones[BONE_NAME]
+    already_calculated = abs(abs(edit_bone.roll) - EXPECTED_ROLL) <= 1e-5
+    edit_bone.select = True
+    armature.bones.active = armature.bones[BONE_NAME]
+    poll = bool(bpy.ops.armature.calculate_roll.poll())
+    if not poll:
+        raise RuntimeError("ARMATURE_OT_calculate_roll poll failed")
+    if not already_calculated:
+        result = bpy.ops.armature.calculate_roll(type="GLOBAL_POS_X", axis_flip=False, axis_only=False)
+        if result != {"FINISHED"}:
+            raise RuntimeError(f"ARMATURE_OT_calculate_roll returned {result}")
+    roll = float(edit_bone.roll)
+    bpy.ops.object.mode_set(mode="OBJECT")
+    return poll, not already_calculated, roll
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --factory-startup --python check-action-armature-calculate-roll-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()
+    poll, changed, roll = run_operator(before)
+    after = state_report()
+    if len(after["bones"]) != 1 or after["bones"][0]["name"] != BONE_NAME:
+        raise RuntimeError(f"calculate_roll changed unexpected bones: {before} -> {after}")
+    if abs(abs(roll) - EXPECTED_ROLL) > 1e-5:
+        raise RuntimeError(f"calculate_roll did not produce the expected roll: {roll}")
+    expected_matrix = [0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, -1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0]
+    for actual, expected in zip(after["bones"][0]["matrix"], expected_matrix):
+        if abs(actual - expected) > 1e-5:
+            raise RuntimeError(f"calculate_roll matrix mismatch: {after}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-armature-calculate-roll-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 reopened != after:
+            raise RuntimeError(f"armature.calculate_roll save/reopen drift: {after} != {reopened}")
+        shutil.copyfile(temporary_path, fixture)
+        report = {
+            "schemaVersion": 1,
+            "task": "M16-GAP-00219",
+            "operation": "ARMATURE_CALCULATE_ROLL_DESKTOP",
+            "fixture": str(fixture),
+            "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+            "before": before,
+            "after": reopened,
+            "alreadyCalculated": not changed,
+            "roll": round(roll, 6),
+            "poll": poll,
+            "operatorStatus": "FINISHED" if changed else "SKIPPED_ALREADY_APPLIED",
+            "mainMutation": "ROLL_CALCULATED_GLOBAL_POS_X" if changed else "ALREADY_ROLL_CALCULATED_GLOBAL_POS_X",
+            "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("armature-calculate-roll-desktop-ok poll=true roll=global-pos-x saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"armature-calculate-roll-desktop-failed: {error}")
+        raise SystemExit(1)