From 42434b58162d4256f2fc39d80cc546fd51fbca61 Mon Sep 17 00:00:00 2001
From: lvjunjie <lvjunjie@abc.com>
Date: Wed, 28 Oct 2026 14:28:16 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E6=A8=A1=E5=9E=8B?=
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---
 Src/nmNum/nmPlot/nmPlotGraphicBinder.cpp | 10 ++++------
 Src/nmNum/nmSubWxs/nmWxMeasureDlg.cpp    | 18 +++++++++++++++---
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/Src/nmNum/nmPlot/nmPlotGraphicBinder.cpp b/Src/nmNum/nmPlot/nmPlotGraphicBinder.cpp
index 96e42110..faa9c41b 100644
--- a/Src/nmNum/nmPlot/nmPlotGraphicBinder.cpp
+++ b/Src/nmNum/nmPlot/nmPlotGraphicBinder.cpp
@@ -974,12 +974,10 @@ void nmPlotGraphicBinder::createMeasureForGraphic(nmObjLineMeasure* pGraphic)
 		QPointF pStart = pts[0];
 		QPointF pEnd = pts[1];
 		double dLength = QLineF(pStart, pEnd).length();
-		if (pEnd != pStart) {
-			pData->setStartPoint(pStart);
-			pData->setEndPoint(pEnd);
-		} else {
-			pData->setCurrentPoint(pStart);
-		}
+		// 单击测量也保存起终点，避免重绘时被尚未更新的原点坐标覆盖。
+		pData->setStartPoint(pStart);
+		pData->setEndPoint(pEnd);
+		pData->setCurrentPoint(pEnd == pStart ? pStart : QPointF(0, 0));
 		nmDataAttribute lenAttr = pData->getLength();
 		lenAttr.setValue(dLength);
 		pData->setLength(lenAttr);
diff --git a/Src/nmNum/nmSubWxs/nmWxMeasureDlg.cpp b/Src/nmNum/nmSubWxs/nmWxMeasureDlg.cpp
index 267ac3d5..7a4a4779 100644
--- a/Src/nmNum/nmSubWxs/nmWxMeasureDlg.cpp
+++ b/Src/nmNum/nmSubWxs/nmWxMeasureDlg.cpp
@@ -83,6 +83,12 @@ void nmWxMeasureDlg::initComponents() {
 
 void nmWxMeasureDlg::onFitStartClicked()
 {
+    // 使用当前井列表；没有可拟合的井时保留测量点，避免写入默认原点。
+    m_vecWellList = nmDataAnalyzeManager::getCurrentInstance()->getWellDataList();
+    if (m_vecWellList.isEmpty()) {
+        return;
+    }
+
     m_pFitStartButton->setEnabled(false);
 
 	// 先取出当前点
@@ -131,9 +137,9 @@ void nmWxMeasureDlg::onFitStartClicked()
 				nearest = pt;
 			}
 		}
-		// 更新起点和终点
-        m_pData->setStartPoint(startPt);
-        m_pData->setEndPoint(nearest);
+		// 单点测量先拟合起点时，将起点移到井上，终点保留在点击位置。
+        m_pData->setStartPoint(nearest);
+        m_pData->setEndPoint(startPt);
 
 		// 重新计算长度
 		double newLen = QLineF(startPt, nearest).length();
@@ -148,6 +154,12 @@ void nmWxMeasureDlg::onFitStartClicked()
 
 void nmWxMeasureDlg::onFitEndClicked()
 {
+    // 使用当前井列表；没有可拟合的井时保留测量点，避免写入默认原点。
+    m_vecWellList = nmDataAnalyzeManager::getCurrentInstance()->getWellDataList();
+    if (m_vecWellList.isEmpty()) {
+        return;
+    }
+
     m_pFitEndButton->setEnabled(false);
 
 	// 先取出当前点