diff --git a/src/Core/Animation/PathAnimationManager.cs b/src/Core/Animation/PathAnimationManager.cs
index c002ea8..f1ca830 100644
--- a/src/Core/Animation/PathAnimationManager.cs
+++ b/src/Core/Animation/PathAnimationManager.cs
@@ -461,6 +461,32 @@ namespace NavisworksTransport.Core.Animation
             doc.Models.OverridePermanentTransform(modelItems, comp.Combine(), false);
         }
 
+        /// <summary>
+        /// 直接用四元数绕物体包围盒中心旋转（增量模式）。
+        /// 用于贴地面等不需要走 Euler 角度链的场景。
+        /// </summary>
+        public void ApplyQuaternionRotationInPlace(Quaternion rotation)
+        {
+            var item = CurrentControlledObject;
+            if (item == null) return;
+
+            var modelItems = new ModelItemCollection { item };
+            var doc = NavisApplication.ActiveDocument;
+
+            var center = GetLiveBoundingBoxCenter(item);
+            var tp = new Vector3((float)center.X, (float)center.Y, (float)center.Z);
+            var rotatedTp = Vector3.Transform(tp, rotation);
+
+            var identity = Transform3D.CreateTranslation(new Vector3D(0, 0, 0));
+            var comp = identity.Factor();
+            comp.Rotation = new Rotation3D(rotation.X, rotation.Y, rotation.Z, rotation.W);
+            comp.Translation = new Vector3D(
+                center.X - rotatedTp.X,
+                center.Y - rotatedTp.Y,
+                center.Z - rotatedTp.Z);
+            doc.Models.OverridePermanentTransform(modelItems, comp.Combine(), false);
+        }
+
         /// <summary>
         /// 将当前显示姿态同步为跟踪状态（yaw=0 对应对齐 X 轴）。
         /// 用于自动调整确认前，替代 RestoreObjectToCADPosition 的复位→设置链路。
diff --git a/src/UI/WPF/ViewModels/AnimationControlViewModel.cs b/src/UI/WPF/ViewModels/AnimationControlViewModel.cs
index 83a0b73..4a6efb1 100644
--- a/src/UI/WPF/ViewModels/AnimationControlViewModel.cs
+++ b/src/UI/WPF/ViewModels/AnimationControlViewModel.cs
@@ -2316,20 +2316,8 @@ namespace NavisworksTransport.UI.WPF.ViewModels
                 rotation = Quaternion.CreateFromAxisAngle(axis, angle);
             }
 
-            // 绕物体中心增量旋转
-            var modelItem = _pathAnimationManager.AnimatedObject;
-            var modelItems = new ModelItemCollection { modelItem };
-            var center = modelItem.BoundingBox().Center;
-            var toOrigin = Autodesk.Navisworks.Api.Transform3D.CreateTranslation(
-                new Vector3D(-center.X, -center.Y, -center.Z));
-            var rotate = new Autodesk.Navisworks.Api.Transform3D(
-                new Rotation3D(rotation.X, rotation.Y, rotation.Z, rotation.W));
-            var fromOrigin = Autodesk.Navisworks.Api.Transform3D.CreateTranslation(
-                new Vector3D(center.X, center.Y, center.Z));
-            var combined = Autodesk.Navisworks.Api.Transform3D.Multiply(
-                Autodesk.Navisworks.Api.Transform3D.Multiply(fromOrigin, rotate), toOrigin);
-            doc.Models.OverridePermanentTransform(modelItems, combined, false);
-
+            // 使用项目中已有的四元数旋转方法
+            _pathAnimationManager.ApplyQuaternionRotationInPlace(rotation);
             _pathAnimationManager.SyncTrackedStateToCurrentDisplayPose();
             UpdatePassageSpaceVisualization();