diff --git a/src/views/index.vue b/src/views/index.vue
index bf82532..b5ae752 100644
--- a/src/views/index.vue
+++ b/src/views/index.vue
@@ -855,7 +855,7 @@ const processData = (data) => {
       lat: data.Latitude,
     }
     // boxPos.value = location
-    let res = getLocalPositionFromRect_Point1AsCenter({
+    let res = getLocalPosition_Point1AsCenter({
       lon: data.Longitude,
       lat: data.Latitude,
       rotate: data.HeadingAngle
@@ -1236,7 +1236,7 @@ function getBoundingBoxAndSize(pointsArr) {
   };
 }
 
-function getLocalPositionFromRect_Point1AsCenter(point, rectPoints, rectInfo) {
+function getLocalPosition_Point1AsCenter(point, rectPoints, rectInfo) {
   const R = 111320;
   const lat0 = rectPoints.reduce((a, b) => a + b.lat, 0) / rectPoints.length;
   const cosLat = Math.cos((lat0 * Math.PI) / 180);
@@ -1246,30 +1246,29 @@ function getLocalPositionFromRect_Point1AsCenter(point, rectPoints, rectInfo) {
     y: p.lat * R
   });
 
+  // 转换所有点为平面坐标
   const pts = rectPoints.map(toXY);
-  const p1 = pts.find(p => p.name === "点位1"); // 右下角 ✅旋转中心
-  const p4 = pts.find(p => p.name === "点位4"); // 左下角 ✅原点
+  const p1 = pts.find(p => p.name === "点位1"); // 右下角 ✅ 旋转中心
+  const p4 = pts.find(p => p.name === "点位4"); // 左下角 ✅ 局部坐标系原点
   const p = toXY(point);
   const angle = Number(rectInfo.angle);
   const rad = (-angle * Math.PI) / 180;
 
-  // 1️⃣ 先求相对于点位1的偏移
-  const dx1 = p.x - p1.x;
-  const dy1 = p.y - p1.y;
-  const x1_local = dx1 * Math.cos(rad) - dy1 * Math.sin(rad);
-  const y1_local = dx1 * Math.sin(rad) + dy1 * Math.cos(rad);
+  // 将矩形“扶正”：对所有点执行同样的逆旋转
+  const rotateToLocal = (x, y) => ({
+    x: (x - p1.x) * Math.cos(rad) - (y - p1.y) * Math.sin(rad),
+    y: (x - p1.x) * Math.sin(rad) + (y - p1.y) * Math.cos(rad)
+  });
 
-  // 2️⃣ 求点位4相对于点位1的局部坐标，用来平移
-  const dx14 = p4.x - p1.x;
-  const dy14 = p4.y - p1.y;
-  const x14_local = dx14 * Math.cos(rad) - dy14 * Math.sin(rad);
-  const y14_local = dx14 * Math.sin(rad) + dy14 * Math.cos(rad);
+  // 旋转后的坐标
+  const p_local = rotateToLocal(p.x, p.y);
+  const p4_local = rotateToLocal(p4.x, p4.y);
 
-  // 3️⃣ 相对于左下角(点4)
-  const x_local = x1_local - x14_local;
-  const y_local = y1_local - y14_local;
+  // 相对于左下角的坐标
+  const x_local = p_local.x - p4_local.x;
+  const y_local = p_local.y - p4_local.y;
 
-  // 4️⃣ 相对旋转角
+  // 相对旋转角
   const rotate_local = ((point.rotate ?? 0) - angle + 360) % 360;
 
   return {