diff --git a/MainPlugin.cs b/MainPlugin.cs
index 149e778..2e1a848 100644
--- a/MainPlugin.cs
+++ b/MainPlugin.cs
@@ -228,6 +228,9 @@ namespace NavisworksTransport
                     LogManager.Info("=== 重新打开插件界面 ===");
                 }
                 
+                // RenderPlugin通过[Plugin]属性自动注册，无需手动处理
+                LogManager.WriteLog("[插件初始化] PathPointRenderPlugin将由Navisworks自动管理");
+                
                 // 显示类别选择对话框
                 ShowCategorySelectionDialog();
                 
@@ -235,6 +238,11 @@ namespace NavisworksTransport
             }, -1, "插件初始化");
         }
 
+        /// <summary>
+        /// 注册PathPointRenderPlugin到Navisworks渲染管线
+        /// </summary>
+
+
         /// <summary>
         /// 显示主控制面板
         /// </summary>
diff --git a/PathPointRenderPlugin.cs b/PathPointRenderPlugin.cs
index 63fc0d1..9e7fd25 100644
--- a/PathPointRenderPlugin.cs
+++ b/PathPointRenderPlugin.cs
@@ -72,17 +72,155 @@ namespace NavisworksTransport
         /// <param name="graphics">图形上下文</param>
         public override void Render(View view, Graphics graphics)
         {
+            LogManager.WriteLog($"[Render入口] ✓ Render方法被调用, IsEnabled={_isEnabled}");
+            
             if (!_isEnabled) return;
 
             try
             {
-                // 简单测试：画一条红色线段，看能否看到任何东西
+                // 首先检查文档和模型状态
+                var activeDoc = Application.ActiveDocument;
+                LogManager.WriteLog($"[文档状态] ActiveDocument: {activeDoc?.GetType().Name ?? "null"}");
+                
+                if (activeDoc == null)
+                {
+                    LogManager.WriteLog($"[文档状态] ❌ 没有活动文档，跳过渲染");
+                    return;
+                }
+                
+                if (activeDoc.Models == null || activeDoc.Models.Count == 0)
+                {
+                    LogManager.WriteLog($"[文档状态] ❌ 没有加载的模型，跳过渲染");
+                    return;
+                }
+                
+                LogManager.WriteLog($"[文档状态] ✓ 文档正常，模型数量: {activeDoc.Models.Count}");
+                LogManager.WriteLog($"[Graphics状态] Graphics对象: {graphics?.GetType().Name ?? "null"}");
+                LogManager.WriteLog($"[Graphics状态] View对象: {view?.GetType().Name ?? "null"}");
+                
+                // 详细的视图和相机诊断信息
+                try
+                {
+                    LogManager.WriteLog($"[视图诊断] 开始获取视图信息");
+                    
+                    // 尝试获取第一个模型的信息
+                    var firstModel = activeDoc.Models.First();
+                    LogManager.WriteLog($"[视图诊断] 第一个模型文件名: {firstModel.FileName}");
+                    
+                    // 尝试获取根项目信息
+                    var rootItem = firstModel.RootItem;
+                    if (rootItem != null)
+                    {
+                        LogManager.WriteLog($"[视图诊断] 根项目显示名: {rootItem.DisplayName}");
+                        LogManager.WriteLog($"[视图诊断] 根项目子项数量: {rootItem.Children.Count()}");
+                    }
+                }
+                catch (Exception viewEx)
+                {
+                    LogManager.WriteLog($"[视图诊断] 获取视图信息失败: {viewEx.Message}");
+                }
+                
+                // 使用BeginModelContext确保正确的渲染上下文
+                graphics.BeginModelContext();
+                LogManager.WriteLog($"[Graphics状态] BeginModelContext完成");
+                
+                // 超大超明显的测试线段 - 覆盖整个模型范围
                 graphics.Color(Color.Red, 0.0);
-                graphics.LineWidth(10);
-                var lineStart = new Point3D(19000, -18000, 2000);
-                var lineEnd = new Point3D(21000, -18000, 2000);
-                graphics.Line(lineStart, lineEnd);
-                LogManager.WriteLog($"[简单测试] 绘制测试线段: ({lineStart.X}, {lineStart.Y}, {lineStart.Z}) 到 ({lineEnd.X}, {lineEnd.Y}, {lineEnd.Z})");
+                graphics.LineWidth(50); // 超粗线条
+                
+                LogManager.WriteLog($"[Graphics状态] Color和LineWidth设置完成");
+                
+                // 视线前方测试：使用正确的Navisworks API获取当前视点
+                try
+                {
+                    LogManager.WriteLog($"[视线测试] 开始获取当前视点信息");
+                    
+                    // 使用正确的API获取当前视点
+                    var document = Application.ActiveDocument;
+                    var currentViewpoint = document.CurrentViewpoint.CreateCopy();
+                    
+                    // 获取相机位置和旋转
+                    var cameraPosition = currentViewpoint.Position;
+                    var cameraRotation = currentViewpoint.Rotation;
+                    
+                    LogManager.WriteLog($"[视线测试] 相机位置: ({cameraPosition.X:F2}, {cameraPosition.Y:F2}, {cameraPosition.Z:F2})");
+                    
+                    LogManager.WriteLog($"[视线测试] 相机旋转信息获取成功");
+                    
+                    // 使用最简单的方法：在相机位置周围绘制球体
+                    graphics.Color(Color.Red, 0.0); // 完全不透明红色
+                    
+                    // 在相机位置的前、后、左、右、上、下绘制红球
+                    var offsets = new[]
+                    {
+                        new Vector3D(0, 0, -50),   // 前方
+                        new Vector3D(0, 0, 50),    // 后方
+                        new Vector3D(-50, 0, 0),   // 左侧
+                        new Vector3D(50, 0, 0),    // 右侧
+                        new Vector3D(0, 50, 0),    // 上方
+                        new Vector3D(0, -50, 0),   // 下方
+                    };
+                    
+                    foreach (var offset in offsets)
+                    {
+                        var ballPosition = new Point3D(
+                            cameraPosition.X + offset.X,
+                            cameraPosition.Y + offset.Y,
+                            cameraPosition.Z + offset.Z
+                        );
+                        
+                        graphics.Sphere(ballPosition, 10.0); // 10单位半径
+                        LogManager.WriteLog($"[视线测试] 红球位置: ({ballPosition.X:F2}, {ballPosition.Y:F2}, {ballPosition.Z:F2})");
+                    }
+                    
+                    LogManager.WriteLog($"[视线测试] ✓ 完成在相机周围绘制 {offsets.Length} 个红球");
+                }
+                catch (Exception viewEx)
+                {
+                    LogManager.WriteLog($"[视线测试] ❌ 视线测试异常: {viewEx.Message}");
+                    
+                    // 备用方案：简单位置绘制
+                    LogManager.WriteLog($"[视线测试] 使用备用方案：固定位置绘制");
+                    graphics.Color(Color.Red, 0.0);
+                    var backupPositions = new[]
+                    {
+                        new Point3D(0, 0, 0),      // 原点
+                        new Point3D(100, 100, 100),   // 正方向
+                        new Point3D(-100, -100, -100), // 负方向
+                    };
+                    
+                    foreach (var pos in backupPositions)
+                    {
+                        graphics.Sphere(pos, 20.0);
+                        LogManager.WriteLog($"[视线测试] 备用红球: ({pos.X}, {pos.Y}, {pos.Z})");
+                    }
+                }
+                var sphereCenter = new Point3D(0, 0, 0); // 原点位置
+                var sphereRadius = 50000.0; // 超大半径，50米
+                
+                try
+                {
+                    graphics.Sphere(sphereCenter, sphereRadius);
+                    LogManager.WriteLog($"[球体测试] ✓ 绘制超大红色球体: 中心(0,0,0), 半径={sphereRadius}");
+                }
+                catch (Exception sphereEx)
+                {
+                    LogManager.WriteLog($"[球体测试] ❌ Sphere调用异常: {sphereEx.Message}");
+                }
+                
+                // 再在模型区域绘制一个球体
+                var modelCenter = new Point3D(27000.0, -10000.0, 1000.0);
+                var modelRadius = 5000.0; // 5米半径
+                
+                try
+                {
+                    graphics.Sphere(modelCenter, modelRadius);
+                    LogManager.WriteLog($"[球体测试] ✓ 绘制模型区域球体: 中心({modelCenter.X}, {modelCenter.Y}, {modelCenter.Z}), 半径={modelRadius}");
+                }
+                catch (Exception modelSphereEx)
+                {
+                    LogManager.WriteLog($"[球体测试] ❌ 模型球体调用异常: {modelSphereEx.Message}");
+                }
                 
                 // 先绘制测试大圆形 - 验证Graphics.Circle API
                 var testCenter = new Point3D(19082.41, -18248.14, 4037.26);
@@ -112,6 +250,12 @@ namespace NavisworksTransport
                         LogManager.WriteLog($"[圆形渲染] 绘制圆形: 中心({marker.Center.X:F2}, {marker.Center.Y:F2}, {marker.Center.Z:F2}), 半径={marker.Radius:F2}, 序号={marker.SequenceNumber}");
                     }
                 }
+                
+                // 结束ModelContext
+                graphics.EndModelContext();
+                LogManager.WriteLog($"[Graphics状态] EndModelContext完成");
+                
+                LogManager.WriteLog($"[Graphics状态] === 3D渲染完成，如果仍看不到图形，问题可能在Graphics API兼容性 ===");
             }
             catch (Exception ex)
             {
@@ -120,6 +264,96 @@ namespace NavisworksTransport
             }
         }
 
+        /// <summary>
+        /// 2D覆盖层渲染方法
+        /// </summary>
+        /// <param name="view">当前视图</param>
+        /// <param name="graphics">图形上下文</param>
+        public override void OverlayRender(View view, Graphics graphics)
+        {
+            LogManager.WriteLog($"[OverlayRender入口] ✓ OverlayRender方法被调用, IsEnabled={_isEnabled}");
+            
+            if (!_isEnabled) return;
+
+            try
+            {
+                // 首先检查文档和模型状态
+                var activeDoc = Application.ActiveDocument;
+                LogManager.WriteLog($"[OverlayRender] ActiveDocument: {activeDoc?.GetType().Name ?? "null"}");
+                
+                if (activeDoc == null)
+                {
+                    LogManager.WriteLog($"[OverlayRender] ❌ 没有活动文档，跳过2D渲染");
+                    return;
+                }
+                
+                if (activeDoc.Models == null || activeDoc.Models.Count == 0)
+                {
+                    LogManager.WriteLog($"[OverlayRender] ❌ 没有加载的模型，跳过2D渲染");
+                    return;
+                }
+                
+                LogManager.WriteLog($"[OverlayRender] ✓ 文档正常，开始2D渲染");
+                
+                // 检查Graphics对象状态
+                LogManager.WriteLog($"[OverlayRender] Graphics对象类型: {graphics?.GetType().Name}");
+                LogManager.WriteLog($"[OverlayRender] View对象: {view?.GetType().Name ?? "null"}");
+                
+                // 使用最简单的API测试
+                var red = Color.FromByteRGB(255, 0, 0);
+                graphics.Color(red, 0.0); // 完全不透明的红色
+                LogManager.WriteLog($"[OverlayRender] 设置颜色: R=255, G=0, B=0, Alpha=0.0");
+                
+                graphics.LineWidth(20); // 很粗的线
+                LogManager.WriteLog($"[OverlayRender] 设置线宽: 20");
+                
+                // 绘制一条从屏幕左上角到右下角的对角线
+                try 
+                {
+                    var startPoint = new Point3D(0, 0, 0);
+                    var endPoint = new Point3D(800, 600, 0);
+                    graphics.Line(startPoint, endPoint);
+                    LogManager.WriteLog($"[OverlayRender] ✓ 绘制对角线: (0,0) 到 (800,600)");
+                }
+                catch (Exception lineEx)
+                {
+                    LogManager.WriteLog($"[OverlayRender] ❌ Line调用异常: {lineEx.Message}");
+                }
+                
+                // 尝试绘制一个简单的点
+                try
+                {
+                    graphics.Point(new Point3D(100, 100, 0));
+                    LogManager.WriteLog($"[OverlayRender] ✓ 绘制点: (100,100)");
+                }
+                catch (Exception pointEx)
+                {
+                    LogManager.WriteLog($"[OverlayRender] ❌ Point调用异常: {pointEx.Message}");
+                }
+                
+                // 尝试强制刷新
+                try
+                {
+                    if (view != null)
+                    {
+                        view.RequestDelayedRedraw(ViewRedrawRequests.Render);
+                        LogManager.WriteLog($"[OverlayRender] ✓ 请求覆盖层重绘");
+                    }
+                }
+                catch (Exception refreshEx)
+                {
+                    LogManager.WriteLog($"[OverlayRender] ❌ 重绘请求异常: {refreshEx.Message}");
+                }
+                
+                LogManager.WriteLog($"[OverlayRender] === 2D覆盖层绘制完成 ===");
+            }
+            catch (Exception ex)
+            {
+                LogManager.WriteLog($"[OverlayRender] 渲染错误: {ex.Message}");
+                LogManager.WriteLog($"[OverlayRender] 异常堆栈: {ex.StackTrace}");
+            }
+        }
+
         /// <summary>
         /// 添加圆形标记
         /// </summary>