更正插入路径点的问题。

src/Core/PathPlanningManager.cs

@@ -1927,6 +1927,40 @@ namespace NavisworksTransport
             }
         }
 
+        /// <summary>
+        /// 在3D视图中插入路径点（在指定位置）
+        /// </summary>
+        /// <param name="worldPoint">3D世界坐标</param>
+        /// <param name="pointType">点类型</param>
+        /// <returns>插入的路径点</returns>
+        public PathPoint InsertPathPointIn3D(Point3D worldPoint, PathPointType? pointType = null)
+        {
+            var insertInfo = FindNearestLineSegmentWithIndex(worldPoint, CurrentRoute.Points);
+            
+            if (!insertInfo.HasValue)
+            {
+                throw new InvalidOperationException("无法确定插入位置");
+            }
+
+            PathPointType finalPointType = pointType ?? PathPointType.WayPoint;
+
+            var pathPoint = new PathPoint
+            {
+                Name = GeneratePointName(finalPointType),
+                Position = worldPoint,
+                Type = finalPointType
+            };
+
+            CurrentRoute.InsertPoint(pathPoint, insertInfo.Value.insertIndex);
+            
+            DrawRouteVisualization(CurrentRoute, isAutoPath: false);
+
+            RaisePathPointOperation(PathPointOperationType.Inserted, pathPoint, CurrentRoute);
+            RaisePathPointsListUpdated(CurrentRoute, "插入路径点");
+
+            return pathPoint;
+        }
+
         /// <summary>
         /// 设置预览点位置（仅用于预览，不添加到路径中）
         /// </summary>
@@ -2047,30 +2081,18 @@ namespace NavisworksTransport
                 // 根据保存的插入索引决定添加方式
                 if (_previewInsertIndex >= 0 && _previewInsertIndex <= CurrentRoute.Points.Count)
                 {
-                    // 在指定位置插入路径点
-                    CurrentRoute.Points.Insert(_previewInsertIndex, confirmPoint);
-                    LogManager.Info($"路径点已插入到索引 {_previewInsertIndex}: {confirmPoint.Name}, 位置: ({confirmPoint.Position.X:F2}, {confirmPoint.Position.Y:F2}, {confirmPoint.Position.Z:F2})");
+                    CurrentRoute.InsertPoint(confirmPoint, _previewInsertIndex);
                 }
                 else
                 {
-                    // 如果没有有效的插入索引，添加到末尾（原来的行为）
                     CurrentRoute.AddPoint(confirmPoint);
-                    LogManager.Info($"路径点已添加到末尾: {confirmPoint.Name}, 位置: ({confirmPoint.Position.X:F2}, {confirmPoint.Position.Y:F2}, {confirmPoint.Position.Z:F2})");
                 }
 
                 // 清除预览状态
                 ClearPreviewPoint();
 
                 // 绘制3D路径可视化
-                try
-                {
-                    DrawRouteVisualization(CurrentRoute, isAutoPath: false);
-                    LogManager.Info($"手工路径3D可视化已更新: {confirmPoint.Name}");
-                }
-                catch (Exception renderEx)
-                {
-                    LogManager.Error($"绘制手工路径3D可视化失败: {renderEx.Message}");
-                }
+                DrawRouteVisualization(CurrentRoute, isAutoPath: false);
 
                 // 触发路径点添加事件
                 RaisePathPointOperation(PathPointOperationType.Added, confirmPoint, CurrentRoute);

src/Core/PathPlanningManagerEventArgs.cs

@@ -336,6 +336,11 @@ namespace NavisworksTransport.Core
         /// </summary>
         Added,
 
+        /// <summary>
+        /// 插入
+        /// </summary>
+        Inserted,
+
         /// <summary>
         /// 删除
         /// </summary>

src/Core/PathPlanningModels.cs

@@ -618,6 +618,24 @@ namespace NavisworksTransport
             UpdateTotalLength();
         }
 
+        /// <summary>
+        /// 在指定位置插入路径点
+        /// </summary>
+        /// <param name="point">要插入的路径点</param>
+        /// <param name="insertIndex">插入位置索引</param>
+        public void InsertPoint(PathPoint point, int insertIndex)
+        {
+            Points.Insert(insertIndex, point);
+            
+            for (int i = 0; i < Points.Count; i++)
+            {
+                Points[i].Index = i;
+            }
+            
+            LastModified = DateTime.Now;
+            UpdateTotalLength();
+        }
+
         /// <summary>
         /// 移除路径点
         /// </summary>