加入若干pgsql的接口

Ramitta/winView3D.xaml.cs

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+using HelixToolkit.Geometry;
+using HelixToolkit.Wpf;
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Media.Media3D;
+
+namespace Ramitta
+{
+    public partial class winView3D : UserControl
+    {
+        public HelixViewport3D _viewport3D;
+
+        public winView3D()
+        {
+            InitializeComponent();
+            // 默认初始化
+            Init("Viewport3D");
+        }
+
+        public void Init(string name = "Viewport3D")
+        {
+            // 检查是否已有Viewport3D
+            var existingViewport = FindName(name) as HelixViewport3D;
+            if (existingViewport != null)
+            {
+                _viewport3D = existingViewport;
+                return;
+            }
+
+            try
+            {
+                // 创建新的Viewport3D
+                _viewport3D = new HelixViewport3D
+                {
+                    Name = name,
+                    //Background = Brushes.White,
+                    IsPanEnabled = true,
+                    IsRotationEnabled = true,
+                    IsZoomEnabled = true,
+                    ShowCoordinateSystem = true,
+                    ShowViewCube = true,
+                    ZoomExtentsWhenLoaded = true
+                };
+
+                // 添加到MainGrid（XAML中定义的Grid）
+                MainGrid.Children.Add(_viewport3D);
+                // 注册名称
+                RegisterName(name, _viewport3D);
+            }
+            catch (Exception ex)
+            {
+                throw new InvalidOperationException($"Failed to initialize 3D view: {ex.Message}", ex);
+            }
+        }
+        /// <summary>
+        /// 在两点之间绘制一条3D直线
+        /// </summary>
+        /// <param name="point1">起点</param>
+        /// <param name="point2">终点</param>
+        /// <param name="color">线条颜色（默认红色）</param>
+        /// <param name="thickness">线条粗细（默认2.0）</param>
+        /// <returns>创建的线条可视化对象</returns>
+        public LinesVisual3D DrawLineBetweenPoints( Point3D point1, 
+                                                    Point3D point2,
+                                                    Color color = default, 
+                                                    double thickness = 2.0,
+                                                    bool point1head=false,
+                                                    Color point1color=default,
+                                                    double point1radius = 0.5,
+                                                    bool point2head = false,
+                                                    Color point2color = default,
+                                                    double point2radius = 0.5)
+        {
+            // 如果没有指定颜色，使用红色
+            if (color == default) color = Colors.Red;
+
+            var line = new LinesVisual3D
+            {
+                Points = new Point3DCollection { point1, point2 },
+                Color = color,
+                Thickness = thickness
+            };
+
+            _viewport3D.Children.Add(line);
+
+            if (point1head)
+            {
+                DrawPointAsSphere(point1, color: point1color, radius: point1radius);
+            }
+            if (point2head)
+            {
+                DrawPointAsSphere(point2, color: point2color, radius: point2radius);
+            }
+            return line;
+        }
+
+        public SphereVisual3D DrawPointAsSphere(Point3D point,
+                                         Color color = default,
+                                         double radius = 0.5,
+                                         int resolution = 10)
+        {
+            if (color == default) color = Colors.Green;
+
+            var sphere = new SphereVisual3D
+            {
+                Center = point,
+                Radius = radius,
+                ThetaDiv = resolution,
+                PhiDiv = resolution,
+                Material = new DiffuseMaterial(new SolidColorBrush(color))
+            };
+
+            _viewport3D.Children.Add(sphere);
+            return sphere;
+        }
+
+
+        // 其他辅助方法
+        public void ClearAllModels()
+        {
+            if (_viewport3D == null) return;
+
+            // 保留光源和坐标轴网格，移除其他
+            for (int i = _viewport3D.Children.Count - 1; i >= 0; i--)
+            {
+                var child = _viewport3D.Children[i];
+                if (!(child is SunLight || child is GridLinesVisual3D))
+                {
+                    _viewport3D.Children.RemoveAt(i);
+                }
+            }
+        }
+        public void SetCamera(Point3D Position, Vector3D LookDirection) {
+            // 设置相机 - 斜向下视角
+            var camera = new PerspectiveCamera
+            {
+                // 从右上后方位看向结构中心，并稍微向下倾斜
+                // 相机位置在结构的右、上、后方，距离根据结构尺寸动态调整
+                Position = Position,
+
+                // 看向结构的中心点
+                LookDirection = LookDirection,
+
+                UpDirection = new Vector3D(0, 1, 0),  // Y轴为上方向
+                FieldOfView = 45                      // 视野角度
+            };
+
+            _viewport3D.Camera = camera;
+            _viewport3D.ZoomExtents();
+        }
+
+        public void ZoomToExtents()
+        {
+            _viewport3D?.ZoomExtents();
+        }
+
+        public void ResetView()
+        {
+            _viewport3D?.ResetCamera();
+        }
+    }
+}