From bd2c0ed221e235420c7fdffefa1cdfa085529a0a Mon Sep 17 00:00:00 2001
From: lixiaojun <1287241240@qq.com>
Date: 星期五, 24 十一月 2023 12:43:15 +0800
Subject: [PATCH] 升级
---
Yw.CurveBase.Core/7-fit/FitHelper.cs | 98 +++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/Yw.CurveBase.Core/7-fit/FitHelper.cs b/Yw.CurveBase.Core/7-fit/FitHelper.cs
index 6d314b5..c313e20 100644
--- a/Yw.CurveBase.Core/7-fit/FitHelper.cs
+++ b/Yw.CurveBase.Core/7-fit/FitHelper.cs
@@ -160,5 +160,103 @@
}
}
+
+ #region 鑾峰緱X鍊�
+
+ /// <summary>
+ /// 鑾峰彇绾挎�ф彃鍊糥锛堝彲鑳芥湁澶氫釜鐐癸級
+ /// </summary>
+ public static List<CurvePoint> GetInterPointX(List<CurvePoint> pts, double y)
+ {
+ if (pts == null || pts.Count < 2)
+ {
+ return default;
+ }
+ var list = new List<CurvePoint>();
+ for (int i = 0; i < pts.Count - 1; i++)
+ {
+ if ((y >= pts[i].Y && y <= pts[i + 1].Y) || (y <= pts[i].Y && y >= pts[i + 1].Y))
+ {//鐩寸嚎鎻掑��
+ double x;
+ if (Math.Abs(pts[i].Y - pts[i + 1].Y) < 0.01)
+ x = (pts[i].X + pts[i + 1].X) * 0.5;
+ else
+ x = pts[i].X + (pts[i + 1].X - pts[i].X) * (y - pts[i].Y) / (pts[i + 1].Y - pts[i].Y);
+
+ list.Add(new CurvePoint(x, y));
+ }
+ }
+ return list;
+ }
+
+ /// <summary>
+ /// 鑾峰彇绾挎�ф彃鍊糥锛堝彲鑳芥湁澶氫釜鐐癸級(鍏佽寤堕暱)
+ /// </summary>
+ public static List<CurvePoint> GetInterPointXByExtend(List<CurvePoint> pts, double y)
+ {
+ if (pts == null || pts.Count < 2)
+ {
+ return default;
+ }
+
+ //鍦ㄨ寖鍥村唴
+ var minY = pts.Min(x => x.Y);
+ var maxY = pts.Max(x => x.Y);
+ if (y >= minY && y <= maxY)
+ {
+ return GetInterPointX(pts, y);
+ }
+
+ var list = new List<CurvePoint>();
+
+ //鍒ゆ柇鏄惁鍦ㄥ墠闈㈢殑寤堕暱閮ㄥ垎
+ double x_start = CurveLineHelper.GetXbyY(pts[0].X, pts[0].Y, pts[1].X, pts[1].Y, y);
+ if (x_start <= pts[0].X)
+ {
+ if (x_start > 0 && x_start > pts[0].X * 0.9)//鏀句竴鐐逛綑閲�
+ {
+ list.Add(new CurvePoint(x_start, y));
+ }
+ }
+
+ //鍒ゆ柇鏄惁鍦ㄥ悗闈㈢殑寤堕暱閮ㄥ垎:U鍨嬫洸绾� 鏄墠鍚庨兘鏈�
+ double x_end = CurveLineHelper.GetXbyY(pts[pts.Count - 2].X, pts[pts.Count - 2].Y, pts[pts.Count - 1].X, pts[pts.Count - 1].Y, y);
+ if (x_end >= pts[pts.Count - 1].X && x_end < pts[pts.Count - 1].X * 1.1)//鏀句竴鐐逛綑閲�
+ {
+ list.Add(new CurvePoint(x_end, y));
+ }
+
+ return list;
+ }
+
+ /// <summary>
+ /// 鑾峰彇绾挎�ф彃鍊糥锛堝彲鑳芥湁澶氫釜鐐癸級
+ /// </summary>
+ public static List<CurvePoint> GetInterPointX(CurveExpress express, double y, int pointNumber = 20, double extendRatio = 1.0)
+ {
+ if (express == null)
+ {
+ return default;
+ }
+ var pts = express.GetFitPointsByXRange(express.Min, express.Max * extendRatio, pointNumber);
+ return GetInterPointX(pts, y);
+ }
+
+ /// <summary>
+ /// 鑾峰彇绾挎�ф彃鍊糥锛堝彲鑳芥湁澶氫釜鐐癸級(鍏佽寤堕暱)
+ /// </summary>
+ public static List<CurvePoint> GetInterPointXByExtend(CurveExpress express, double y, int pointNumber = 20, double extendRatio = 1.2)
+ {
+ if (express == null)
+ {
+ return default;
+ }
+ var pts = express.GetFitPointsByXRange(express.Min, express.Max * extendRatio, pointNumber);
+ return GetInterPointXByExtend(pts, y);
+ }
+
+
+ #endregion 鑾峰緱X鍊�
+
}
}
--
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