fix(engine): 支持倒角角度参数并新增回归测试

2026-08-27 18:48:27 +08:00
parent 9e5aa48c3d
commit 7e199d785d
3 changed files with 170 additions and 3 deletions
@@ -658,6 +658,40 @@ class EngineRuntimeFoundationTests(unittest.TestCase):
        self.assertLess(chamfer_result["volume_mm3"], baseline["volume_mm3"])
        self.assertAlmostEqual(pattern_result["volume_mm3"], 1000 - 3 * 10 * 3.141592653589793, places=5)

+    def test_chamfer_consumes_angle_rad_instead_of_silent_45_degree_fallback(self) -> None:
+        from cdsl_engine.runtime import rebuild_cdsl
+
+        import math
+
+        base = self._base_block()
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            baseline = rebuild_cdsl(base, root / "baseline.step")
+            edge = next(item for item in baseline["topology_records"] if item["kind"] == "edge")
+            selector = {
+                "kind": "edge", "stable_id": "edge", "source": "solidworks", "confidence": 1,
+                "owner_feature_id": "base_add", "geometry": edge["geometry"],
+            }
+
+            equal = deepcopy(base)
+            equal["features"].append({
+                "id": "chamfer_45", "atomic_id": "chamfer", "depends_on": ["base_add"],
+                "params": {"distance_mm": 1, "angle_rad": math.pi / 4}, "selectors": [deepcopy(selector)],
+            })
+            equal_result = rebuild_cdsl(equal, root / "chamfer-45.step")
+            # 45° Distance-Angle 等价于等距倒角：tan(45°)=1，切掉 0.5*1*1*10=5 mm³。
+            self.assertAlmostEqual(equal_result["volume_mm3"], 1000 - 5, places=5)
+
+            slanted = deepcopy(base)
+            slanted["features"].append({
+                "id": "chamfer_30", "atomic_id": "chamfer", "depends_on": ["base_add"],
+                "params": {"distance_mm": 1, "angle_rad": math.pi / 6}, "selectors": [deepcopy(selector)],
+            })
+            slanted_result = rebuild_cdsl(slanted, root / "chamfer-30.step")
+            # 30°：第二距离 = 1*tan(30°)≈0.577，切掉 0.5*1*0.577*10≈2.887 mm³，
+            # 体积明显大于 45° 等距倒角（995），验证 angle_rad 被消费而非静默 45°。
+            self.assertAlmostEqual(slanted_result["volume_mm3"], 1000 - 0.5 * math.tan(math.pi / 6) * 10, places=5)
+
    def test_linear_pattern_replays_hole_with_explicit_host_frame(self) -> None:
        from cdsl_engine.runtime import rebuild_cdsl