fix:网格线选中

Views/UserControl/Viewport3D.xaml.cs

@@ -16,6 +16,7 @@ using SharpDX;
 using SharpDX.Direct3D11;
 using SharpDX.DXGI;
 using MathNet.Numerics;
+using System.Windows.Media;
 
 
 namespace SparkClient.Views.UserControl;
@@ -605,5 +606,18 @@ public partial class Viewport3D
             ViewportManager.ClearDicModels();
             return;
         }
+        var hit = hits[0];
+        // 检查是否是 MeshGeometryModel3D
+        if (hit.ModelHit is LineGeometryModel3D modelHit)
+        {
+            // 获取几何信息
+            if (modelHit != null)
+            {
+            }
+        }
+        else
+        {
+            ViewportManager.ClearDicModels();
+        }
     }
 }

Views/UserControl/ViewportData/Helper/ViewportHelperPro.cs

@@ -23,6 +23,7 @@ using Color = SharpDX.Color;
 using GeometryModel3D = HelixToolkit.Wpf.SharpDX.GeometryModel3D;
 using NPOI.SS.Formula.Functions;
 using MeshGeometry3D = HelixToolkit.Wpf.SharpDX.MeshGeometry3D;
+using NPOI.SS.UserModel;
 
 namespace SparkClient.Views.UserControl.ViewportData.Helper;
 
@@ -1289,7 +1290,7 @@ public class ViewportHelperPro
         var lineCal = new LineCalculationHelper(firstPoint.Point1, center);
         
         var edgeLines = new List<Tuple<Vector3, Vector3>>();
-        Color4 XlineColor =new Color4(255f, 0f, 0f, 1f);
+        Color4 XlineColor =new Color4(80f, 0f, 0f, 1f);
         var x1 = 5;
         var z1 = lineCal.calZ(x1);
         var x2 = -5;
@@ -1297,27 +1298,74 @@ public class ViewportHelperPro
         edgeLines.Add(new Tuple<Vector3, Vector3>(new Vector3(x1, Y, z1), new Vector3(x2, Y, z2)));
         lines.Add(DisplayLineModel3D(edgeLines, XlineColor));
 
+        edgeLines = new List<Tuple<Vector3, Vector3>>();
         edgeLines.Add(lineCal.calLineOfOffset(new Tuple<Vector3, Vector3>(new Vector3(x1, Y, z1), new Vector3(x2, Y, z2)),2));
-        lines.Add(DisplayLineModel3D(edgeLines, XlineColor));
+        var lineA = DisplayLineModel3D(edgeLines, Color4.Black);
+        lines.Add(lineA);
 
+        edgeLines = new List<Tuple<Vector3, Vector3>>();
         edgeLines.Add(lineCal.calLineOfOffset(new Tuple<Vector3, Vector3>(new Vector3(x1, Y, z1), new Vector3(x2, Y, z2)), -2));
-        lines.Add(DisplayLineModel3D(edgeLines, XlineColor));
+        var lineB = DisplayLineModel3D(edgeLines, XlineColor);
+        lines.Add(lineB);
+        lineA.MouseDown3D += LineA_MouseDown3D;
+        lineA.MouseUp3D += LineA_MouseUp3D;
+        lineA.MouseMove3D += LineA_MouseMove3D;
 
-        Color4 YlineColor = new Color4(0F, 255f, 0f, 1f);
+        Color4 YlineColor = new Color4(0F, 80f, 0f, 1f);
         var x3 = 5;
         var z3 = lineCal.calZVertical(x3);
         var x4 = -5;
         var z4 = lineCal.calZVertical(x4);
+
+        edgeLines = new List<Tuple<Vector3, Vector3>>();
         edgeLines.Add(new Tuple<Vector3, Vector3>(new Vector3(x3, Y, z3), new Vector3(x4, Y, z4)));
         lines.Add(DisplayLineModel3D(edgeLines, YlineColor));
 
+        edgeLines = new List<Tuple<Vector3, Vector3>>();
         edgeLines.Add(lineCal.calLineOfOffset(new Tuple<Vector3, Vector3>(new Vector3(x3, Y, z3), new Vector3(x4, Y, z4)), 2));
         lines.Add(DisplayLineModel3D(edgeLines, YlineColor));
 
+        edgeLines = new List<Tuple<Vector3, Vector3>>();
         edgeLines.Add(lineCal.calLineOfOffset(new Tuple<Vector3, Vector3>(new Vector3(x3, Y, z3), new Vector3(x4, Y, z4)), -2));
         lines.Add(DisplayLineModel3D(edgeLines, YlineColor));
         return lines;
     }
+    private static bool isDrawing = false;
+    private static Vector3 startpoint;
+    private static void LineA_MouseMove3D(object sender, RoutedEventArgs e)
+    {
+        if (isDrawing)
+        {
+            if (e is HelixToolkit.Wpf.SharpDX.MouseMove3DEventArgs ev)
+            {
+                var line = sender as LineGeometryModel3D;
+                var newPoint = ev.HitTestResult.PointHit;
+                var moveDirection = newPoint - startpoint;
+                var lineDirection = line.Geometry.Positions[1] - line.Geometry.Positions[0];
+
+                var perpendicularDirection = Vector3.Cross(lineDirection, Vector3.Cross(moveDirection, lineDirection));
+                perpendicularDirection.Normalize();
+
+                line.Geometry.Positions[0] += perpendicularDirection * Vector3.Dot(moveDirection, perpendicularDirection);
+                line.Geometry.Positions[1] += perpendicularDirection * Vector3.Dot(moveDirection, perpendicularDirection);
+            }
+        }
+    }
+
+    private static void LineA_MouseUp3D(object sender, RoutedEventArgs e)
+    {
+        isDrawing = false;
+    }
+
+    private static void LineA_MouseDown3D(object sender, RoutedEventArgs e)
+    {
+        isDrawing = true;
+        if(e is HelixToolkit.Wpf.SharpDX.MouseDown3DEventArgs ev){
+            startpoint = ev.HitTestResult.PointHit;
+        }
+    }
+
+
     public static LineGeometryModel3D ShowCircleLine(double radius = 1.0, double thickness = 1.0)
     {
         var Y = -0.01F;