李伟
95 lines
3.1 KiB
C#
95 lines
3.1 KiB
C#
using System;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using System.Windows.Shapes;
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namespace XP.ImageProcessing.RoiControl.Models
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{
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/// <summary>一次点点距测量的所有视觉元素</summary>
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public class MeasureGroup
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{
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// 保留原有圆点属性以兼容其他代码
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public Ellipse Dot1 { get; set; }
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public Ellipse Dot2 { get; set; }
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// 新增：垂直线段（替代圆点的视觉表现）
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public Line PerpLine1 { get; set; }
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public Line PerpLine2 { get; set; }
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public Line Line { get; set; }
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public TextBlock Label { get; set; }
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public Point P1 { get; set; }
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public Point P2 { get; set; }
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/// <summary>垂直线段长度（像素）</summary>
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public double PerpLineLength { get; set; } = 10.0;
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public double Distance
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{
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get
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{
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double dx = P2.X - P1.X, dy = P2.Y - P1.Y;
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return Math.Sqrt(dx * dx + dy * dy);
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}
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}
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public void UpdateLine()
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{
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Line.X1 = P1.X; Line.Y1 = P1.Y;
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Line.X2 = P2.X; Line.Y2 = P2.Y;
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Line.Visibility = Visibility.Visible;
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// 更新垂直线段位置
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UpdatePerpLines();
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}
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/// <summary>更新两条垂直线段的位置</summary>
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public void UpdatePerpLines()
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{
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if (PerpLine1 == null || PerpLine2 == null) return;
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// 计算两点连线的方向向量
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double dx = P2.X - P1.X;
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double dy = P2.Y - P1.Y;
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double len = Math.Sqrt(dx * dx + dy * dy);
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if (len < 0.001) return; // 避免除零
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// 归一化方向向量
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double ux = dx / len;
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double uy = dy / len;
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// 垂直方向向量 (-uy, ux)
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double vx = -uy;
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double vy = ux;
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// P1处的垂直线段
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double halfLen1 = PerpLineLength / 2;
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PerpLine1.X1 = P1.X + vx * halfLen1;
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PerpLine1.Y1 = P1.Y + vy * halfLen1;
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PerpLine1.X2 = P1.X - vx * halfLen1;
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PerpLine1.Y2 = P1.Y - vy * halfLen1;
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PerpLine1.Visibility = Visibility.Visible;
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// P2处的垂直线段
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double halfLen2 = PerpLineLength / 2;
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PerpLine2.X1 = P2.X + vx * halfLen2;
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PerpLine2.Y1 = P2.Y + vy * halfLen2;
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PerpLine2.X2 = P2.X - vx * halfLen2;
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PerpLine2.Y2 = P2.Y - vy * halfLen2;
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PerpLine2.Visibility = Visibility.Visible;
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}
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public void UpdateLabel(string distanceText = null)
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{
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Label.Text = (Index > 0 ? $"#{Index} " : "") + (distanceText ?? $"{Distance:F2} px");
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Canvas.SetLeft(Label, (P1.X + P2.X) / 2 + 8);
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Canvas.SetTop(Label, (P1.Y + P2.Y) / 2 - 18);
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Label.Visibility = Visibility.Visible;
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}
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public int Index { get; set; }
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}
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}
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