# 常见使用场景示例

## 场景1：创建并显示对话框

```csharp
using NavisworksTransport.Utils;

public class MyViewModel
{
    private MyDialog _dialog;
    
    public void ShowDialog()
    {
        // 防止重复打开
        if (_dialog != null && _dialog.IsVisible)
        {
            _dialog.Activate();
            return;
        }
        
        // 创建对话框
        _dialog = new MyDialog();
        
        // ✅ 使用 DialogHelper 设置 Owner
        DialogHelper.SetOwnerSafely(_dialog);
        
        // 显示非模态对话框
        _dialog.Show();
        
        // 清理引用
        _dialog.Closed += (s, e) => _dialog = null;
    }
}
```

## 场景2：带单位转换的计算

```csharp
using NavisworksTransport.Utils;

public class PathPlanner
{
    /// <summary>
    /// 设置网格大小
    /// </summary>
    /// <param name="cellSizeInMeters">网格单元大小（米）</param>
    public void SetCellSize(double cellSizeInMeters)
    {
        // ✅ 转换为模型单位存储
        double cellSize = UnitsConverter.ConvertFromMeters(cellSizeInMeters);
        
        // 后续计算使用 cellSize（模型单位）
        _grid = new GridMap(cellSize);
    }
    
    /// <summary>
    /// 获取路径长度（用于显示）
    /// </summary>
    public string GetPathLengthDisplay(PathRoute route)
    {
        // ✅ 转换为米显示
        double lengthInMeters = UnitsConverter.ConvertToMeters(route.TotalLength);
        return $"{lengthInMeters:F2} 米";
    }
}
```

## 场景3：完整的操作日志记录

```csharp
using NavisworksTransport.Utils;

public class PathService
{
    public async Task<PathRoute> CreatePathAsync(PathParameters parameters)
    {
        LogManager.Info("[路径创建] === 开始创建路径 ===");
        LogManager.Info($"[路径创建] 参数: {parameters}");
        
        try
        {
            // 验证参数
            if (!ValidateParameters(parameters))
            {
                LogManager.Warning("[路径创建] 参数验证失败");
                return null;
            }
            
            // 执行创建
            var route = await GeneratePathAsync(parameters);
            
            LogManager.Info($"[路径创建] 成功: {route.Name}, ID: {route.Id}");
            LogManager.Info($"[路径创建] 长度: {route.TotalLength:F2} 米, 点数: {route.Points.Count}");
            
            return route;
        }
        catch (Exception ex)
        {
            // ✅ 记录完整异常信息
            LogManager.Error($"[路径创建] 失败: {ex.Message}", ex);
            throw;
        }
        finally
        {
            LogManager.Info("[路径创建] === 创建完成 ===");
        }
    }
}
```

## 场景4：几何计算

```csharp
using NavisworksTransport.Utils;

public class PathAnalyzer
{
    /// <summary>
    /// 计算路径总长度
    /// </summary>
    public double CalculateTotalLength(List<Point3D> points)
    {
        double totalLength = 0;
        
        for (int i = 0; i < points.Count - 1; i++)
        {
            // ✅ 使用 GeometryHelper
            totalLength += GeometryHelper.Distance(points[i], points[i + 1]);
        }
        
        return totalLength;
    }
    
    /// <summary>
    /// 检查转弯是否过急
    /// </summary>
    public bool IsTurnTooSharp(Point3D prev, Point3D current, Point3D next, double maxAngle)
    {
        Vector3D v1 = GeometryHelper.Subtract(current, prev);
        Vector3D v2 = GeometryHelper.Subtract(next, current);
        
        double angle = GeometryHelper.AngleBetweenDegrees(v1, v2);
        
        return angle > maxAngle;
    }
}
```

## 场景5：确认对话框

```csharp
using NavisworksTransport.Utils;
using System.Windows;

public class PathViewModel
{
    public void DeletePath(PathRoute route)
    {
        // ✅ 使用 DialogHelper 显示确认对话框
        var result = DialogHelper.ShowMessageBox(
            $"确定要删除路径 \"{route.Name}\" 吗？\n此操作不可撤销。",
            "确认删除",
            MessageBoxButton.YesNo,
            MessageBoxImage.Warning
        );
        
        if (result != MessageBoxResult.Yes)
        {
            LogManager.Info($"[删除] 用户取消删除: {route.Name}");
            return;
        }
        
        // 执行删除
        _pathPlanningManager.DeleteRoute(route.Id);
        LogManager.Info($"[删除] 路径已删除: {route.Name}");
    }
}
```