优化

backend/engine/cdsl_engine/runtime.py

@@ -373,6 +373,23 @@ def _revolve_axis(node: FeaturePlanNode, session: ExecutionSession) -> AxisSpec:
     return resolution.record.value
 
 
+def _validate_revolve_axis_in_sketch_plane(axis: AxisSpec, sketch: dict[str, Any]) -> None:
+    """Defend direct CDSL execution from an out-of-plane revolve axis."""
+    plane = PlaneSpec.from_mapping(sketch.get("workplane") or {})
+    direction_normal_dot = abs(vector_dot(axis.direction, plane.normal))
+    if direction_normal_dot > 1e-7:
+        raise ValueError(
+            "REVOLVE_AXIS_NOT_IN_SKETCH_PLANE: params.axis.direction must be parallel to "
+            f"sketch.workplane; abs(dot(axis_direction, plane_normal))={direction_normal_dot:.3g}"
+        )
+    origin_plane_offset = abs(vector_dot(vector_subtract(axis.origin_mm, plane.origin_mm), plane.normal))
+    if origin_plane_offset > 1e-6:
+        raise ValueError(
+            "REVOLVE_AXIS_NOT_IN_SKETCH_PLANE: params.axis.origin_mm must lie in "
+            f"sketch.workplane; plane_offset_mm={origin_plane_offset:.3g}"
+        )
+
+
 def _shape_from_primary(node: FeaturePlanNode, session: ExecutionSession, *, sketch: dict[str, Any] | None = None) -> FeatureResult:
     # 主形状特征（拉伸 / 旋转）的统一入口：由草图生成实体并与当前主体做布尔合并或切除。
     
@@ -402,6 +419,7 @@ def _shape_from_primary(node: FeaturePlanNode, session: ExecutionSession, *, ske
     else:
         #   旋转：解析旋转轴并校验旋转角，然后绕轴旋转每个面得到实体列表。
         axis = _revolve_axis(node, session)
+        _validate_revolve_axis_in_sketch_plane(axis, selected_sketch)
         angle = float(node.params.get("angle_deg") or 0.0)
         if angle <= 0:
             raise ValueError("revolve requires angle_deg > 0")