test: add reproducible FreeCAD golden oracle

scripts/freecad-golden-driver.py

@@ -0,0 +1,69 @@
+import json
+import os
+
+import FreeCAD as App
+import Part
+
+
+def make_shape(operation):
+    kind = operation["type"]
+    if kind == "box":
+        shape = Part.makeBox(operation["length"], operation["width"], operation["height"])
+    elif kind == "cylinder":
+        shape = Part.makeCylinder(operation["radius"], operation["height"], App.Vector(0, 0, 0), App.Vector(0, 0, 1), operation["angle"])
+    elif kind == "sphere":
+        shape = Part.makeSphere(operation["radius"])
+    elif kind == "cone":
+        shape = Part.makeCone(operation["radius1"], operation["radius2"], operation["height"], App.Vector(0, 0, 0), App.Vector(0, 0, 1), operation["angle"])
+    elif kind in ("cut", "fuse", "common"):
+        base = make_shape(operation["base"])
+        tool = make_shape(operation["tool"])
+        shape = base.cut(tool) if kind == "cut" else base.fuse(tool) if kind == "fuse" else base.common(tool)
+    else:
+        raise ValueError("Unsupported golden operation: " + kind)
+
+    placement_value = operation.get("placement")
+    if placement_value:
+        placement = App.Placement()
+        placement.Base = App.Vector(*(placement_value.get("translation") or [0, 0, 0]))
+        rotation = placement_value.get("rotation")
+        if rotation:
+            placement.Rotation = App.Rotation(App.Vector(*rotation["axis"]), rotation["angle"])
+        shape = shape.copy()
+        shape.Placement = placement
+    return shape
+
+
+def vector(x, y, z):
+    return [float(x), float(y), float(z)]
+
+
+scenario_path = os.environ.get("FREECAD_GOLDEN_SCENARIO")
+if not scenario_path:
+    raise RuntimeError("FREECAD_GOLDEN_SCENARIO is required")
+
+with open(scenario_path, "r", encoding="utf-8") as scenario_file:
+    scenario = json.load(scenario_file)
+
+shape = make_shape(scenario["operation"])
+box = shape.BoundBox
+version = App.Version()
+result = {
+    "schemaVersion": 1,
+    "fixtureId": scenario["id"],
+    "freecadVersion": ".".join(str(value) for value in version[:3]),
+    "shapeType": shape.ShapeType,
+    "isNull": shape.isNull(),
+    "isValid": shape.isValid(),
+    "solids": len(shape.Solids),
+    "faces": len(shape.Faces),
+    "edges": len(shape.Edges),
+    "vertices": len(shape.Vertexes),
+    "volume": float(shape.Volume),
+    "area": float(shape.Area),
+    "boundingBox": {
+        "min": vector(box.XMin, box.YMin, box.ZMin),
+        "max": vector(box.XMax, box.YMax, box.ZMax),
+    },
+}
+print("FREECAD_GOLDEN_RESULT=" + json.dumps(result, sort_keys=True, separators=(",", ":")))