李伟
88 lines
3.8 KiB
C#
88 lines
3.8 KiB
C#
// ============================================================================
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// 文件名: AngleMeasurementProcessor.cs
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// 描述: 角度测量算子 — 共端点的两条直线夹角
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// 功能:
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// - 用户定义三个点：端点(顶点)、射线1终点、射线2终点
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// - 计算两条射线之间的夹角（0°~180°）
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// - 在图像上绘制两条射线、角度弧线和标注
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// ============================================================================
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using Emgu.CV;
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using Emgu.CV.Structure;
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using XP.ImageProcessing.Core;
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using Serilog;
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using System.Drawing;
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namespace XP.ImageProcessing.Processors;
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public class AngleMeasurementProcessor : ImageProcessorBase
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{
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private static readonly ILogger _logger = Log.ForContext<AngleMeasurementProcessor>();
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public AngleMeasurementProcessor()
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{
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Name = LocalizationHelper.GetString("AngleMeasurementProcessor_Name");
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Description = LocalizationHelper.GetString("AngleMeasurementProcessor_Description");
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}
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protected override void InitializeParameters()
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{
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// 三个点坐标（由交互控件注入，使用 double 避免取整误差）
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Parameters.Add("VX", new ProcessorParameter("VX", "VX", typeof(double), 250.0, null, null, "") { IsVisible = false });
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Parameters.Add("VY", new ProcessorParameter("VY", "VY", typeof(double), 250.0, null, null, "") { IsVisible = false });
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Parameters.Add("AX", new ProcessorParameter("AX", "AX", typeof(double), 100.0, null, null, "") { IsVisible = false });
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Parameters.Add("AY", new ProcessorParameter("AY", "AY", typeof(double), 250.0, null, null, "") { IsVisible = false });
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Parameters.Add("BX", new ProcessorParameter("BX", "BX", typeof(double), 250.0, null, null, "") { IsVisible = false });
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Parameters.Add("BY", new ProcessorParameter("BY", "BY", typeof(double), 100.0, null, null, "") { IsVisible = false });
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}
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public override Image<Gray, byte> Process(Image<Gray, byte> inputImage)
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{
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double vx = GetParameter<double>("VX"), vy = GetParameter<double>("VY");
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double ax = GetParameter<double>("AX"), ay = GetParameter<double>("AY");
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double bx = GetParameter<double>("BX"), by = GetParameter<double>("BY");
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OutputData.Clear();
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// 向量 VA 和 VB
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double vax = ax - vx, vay = ay - vy;
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double vbx = bx - vx, vby = by - vy;
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double lenA = Math.Sqrt(vax * vax + vay * vay);
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double lenB = Math.Sqrt(vbx * vbx + vby * vby);
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double angleDeg = 0;
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if (lenA > 0.001 && lenB > 0.001)
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{
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double dot = vax * vbx + vay * vby;
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double cosAngle = Math.Clamp(dot / (lenA * lenB), -1.0, 1.0);
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angleDeg = Math.Acos(cosAngle) * 180.0 / Math.PI;
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}
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// 计算角度弧的起始角和扫过角（用于绘制弧线）
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double angleA = Math.Atan2(vay, vax) * 180.0 / Math.PI;
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double angleB = Math.Atan2(vby, vbx) * 180.0 / Math.PI;
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// 确保从 angleA 到 angleB 的扫过方向是较小的夹角
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double sweep = angleB - angleA;
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if (sweep > 180) sweep -= 360;
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if (sweep < -180) sweep += 360;
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string angleText = $"{angleDeg:F2} deg";
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OutputData["AngleMeasurementResult"] = true;
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OutputData["Vertex"] = new Point((int)Math.Round(vx), (int)Math.Round(vy));
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OutputData["PointA"] = new Point((int)Math.Round(ax), (int)Math.Round(ay));
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OutputData["PointB"] = new Point((int)Math.Round(bx), (int)Math.Round(by));
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OutputData["AngleDeg"] = angleDeg;
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OutputData["ArcStartAngle"] = angleA;
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OutputData["ArcSweepAngle"] = sweep;
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OutputData["AngleText"] = angleText;
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_logger.Information("AngleMeasurement: Angle={Angle}, V=({VX},{VY}), A=({AX},{AY}), B=({BX},{BY})",
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angleText, vx, vy, ax, ay, bx, by);
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return inputImage.Clone();
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}
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}
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