Rebuild local Blender WASM environment and recovery evidence

tools/web/check-wbv2-p4-003-desktop.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import pathlib
+import sys
+
+import bpy
+
+
+def mesh_record(obj):
+    mesh = obj.data
+    mask = mesh.attributes.get(".sculpt_mask")
+    face_sets = mesh.attributes.get(".sculpt_face_set")
+    if mask is None or face_sets is None:
+        raise RuntimeError("sculpt attributes are missing")
+    return {
+        "name": obj.name,
+        "vertexCount": len(mesh.vertices),
+        "faceCount": len(mesh.polygons),
+        "mask": [round(item.value, 6) for item in mask.data],
+        "faceSets": [item.value for item in face_sets.data],
+    }
+
+
+def nonmesh_record():
+    curve = bpy.data.curves.get("WBV2P4003Curve")
+    point_cloud = bpy.data.pointclouds.get("WBV2P4003PointCloud")
+    if curve is None or point_cloud is None:
+        raise RuntimeError("non-mesh fixture data is missing")
+    return {
+        "curve": {"name": curve.name, "splineCount": len(curve.splines), "pointCount": sum(len(item.bezier_points) + len(item.points) for item in curve.splines)},
+        "pointCloud": {"name": point_cloud.name, "pointCount": len(point_cloud.points)},
+    }
+
+
+def state():
+    obj = bpy.data.objects.get("WBV2P4003SculptObject")
+    if obj is None or obj.type != "MESH":
+        raise RuntimeError("sculpt object is missing")
+    return {"mesh": mesh_record(obj), "nonMesh": nonmesh_record()}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --factory-startup --python check-wbv2-p4-003-desktop.py -- FIXTURE REPORT")
+    fixture, report_path = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    before = state()
+    temporary = fixture.with_name(f"{fixture.stem}-reopen.blend")
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=str(temporary), check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=str(temporary), load_ui=False)
+        after = state()
+    finally:
+        temporary.unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError(f"sculpt/non-mesh save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "WBV2-P4-003",
+        "operation": "SCULPT_NONMESH_PAINT_DESKTOP",
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "state": after,
+        "saveReopen": "EXACT",
+        "blenderVersion": bpy.app.version_string,
+    }
+    report_path.parent.mkdir(parents=True, exist_ok=True)
+    report_path.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
+    print("wbv2-p4-003-desktop-ok vertices=5 faces=5 curvePoints=3 pointCloudPoints=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()