标记去掉圆点，改为带左箭头的便签指向坐标

src/scene/CesiumGlobe.js

@@ -36,15 +36,16 @@ function sphericalAreaKm2(polys) {
   return area * R * R;
 }
 
-// 生成便签 canvas：黄色圆角底 + 黑色加粗文字（整张图，背景与文字完美对齐）
-function makeStickyNote(text, fontSize) {
-  const padX = 14, padY = 8, radius = 8, S = 2; // S: 2x 超采样，文字更清晰
+// 生成便签 canvas：黄底圆角 + 左侧箭头 + 黑色加粗文字（整张图，箭头尖端指向坐标）
+function makeStickyNote(text, fontSize, selected = false) {
+  const padX = 14, padY = 8, radius = 8, arrowW = 12, arrowH = 16, S = 2; // S: 2x 超采样
   const font = `bold ${fontSize}px "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif`;
   const m = document.createElement('canvas');
   const mctx = m.getContext('2d');
   mctx.font = font;
   const textW = mctx.measureText(text).width;
-  const w = Math.max(1, Math.ceil(textW + padX * 2));
+  const bodyW = Math.max(1, Math.ceil(textW + padX * 2));
+  const w = arrowW + bodyW;
   const h = Math.ceil(fontSize + padY * 2);
   const c = document.createElement('canvas');
   c.width = w * S;
@@ -52,20 +53,38 @@ function makeStickyNote(text, fontSize) {
   const ctx = c.getContext('2d');
   ctx.scale(S, S);
 
-  // 黄色圆角底 + 阴影
+  // 阴影
   ctx.shadowColor = 'rgba(0, 0, 0, 0.20)';
   ctx.shadowBlur = 5;
   ctx.shadowOffsetY = 2;
+
+  // 箭头 + 圆角矩形一体化路径（箭头尖端在左侧 x=0，指向坐标）
   ctx.beginPath();
-  ctx.moveTo(radius, 0);
-  ctx.arcTo(w, 0, w, h, radius);
-  ctx.arcTo(w, h, 0, h, radius);
-  ctx.arcTo(0, h, 0, 0, radius);
-  ctx.arcTo(0, 0, w, 0, radius);
-  ctx.closePath();
+  ctx.moveTo(0, h / 2);                                  // 箭头尖端
+  ctx.lineTo(arrowW, h / 2 - arrowH / 2);                // 箭头上沿
+  ctx.lineTo(arrowW, radius);                            // 左边缘上部
+  ctx.arcTo(arrowW, 0, arrowW + radius, 0, radius);      // 左上圆角
+  ctx.lineTo(w - radius, 0);                             // 上边
+  ctx.arcTo(w, 0, w, radius, radius);                    // 右上圆角
+  ctx.lineTo(w, h - radius);                             // 右边
+  ctx.arcTo(w, h, w - radius, h, radius);                // 右下圆角
+  ctx.lineTo(arrowW + radius, h);                        // 底边
+  ctx.arcTo(arrowW, h, arrowW, h - radius, radius);      // 左下圆角
+  ctx.lineTo(arrowW, h / 2 + arrowH / 2);                // 左边缘下部
+  ctx.closePath();                                       // 闭合回箭头尖端
   ctx.fillStyle = '#FFF9A6';
   ctx.fill();
 
+  // 选中时加黑边
+  if (selected) {
+    ctx.shadowColor = 'transparent';
+    ctx.shadowBlur = 0;
+    ctx.shadowOffsetY = 0;
+    ctx.strokeStyle = '#14100d';
+    ctx.lineWidth = 3;
+    ctx.stroke();
+  }
+
   // 黑色加粗文字（无阴影）
   ctx.shadowColor = 'transparent';
   ctx.shadowBlur = 0;
@@ -74,7 +93,7 @@ function makeStickyNote(text, fontSize) {
   ctx.font = font;
   ctx.textBaseline = 'middle';
   ctx.textAlign = 'center';
-  ctx.fillText(text, w / 2, h / 2 + 1);
+  ctx.fillText(text, arrowW + bodyW / 2, h / 2 + 1);
 
   return { canvas: c, scale: 1 / S };
 }
@@ -186,42 +205,28 @@ export class CesiumGlobe {
 
   _buildMarkers() {
     const viewer = this.viewer;
-    const gold = Cesium.Color.fromCssColorString('#e0c46a');
-    const ink = Cesium.Color.fromCssColorString('#14100d');
 
     ENTRIES.forEach((entry, i) => {
+      // 便签：黄底黑字 + 左侧箭头指向坐标（整张图）
+      const noteNormal = makeStickyNote(entry.name, 19, false);
+      const noteSelected = makeStickyNote(entry.name, 19, true);
+
       const entity = viewer.entities.add({
-        position: Cesium.Cartesian3.fromDegrees(entry.lng, entry.lat),
-        point: {
-          pixelSize: 10, // 标记宽一点
-          color: gold, // 金色圆形
-          outlineColor: ink, // 外侧 1px 黑边
-          outlineWidth: 1,
-          heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
-          disableDepthTestDistance: Number.POSITIVE_INFINITY,
-          distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 1e7),
-        },
-      });
-
-      entity.entryIndex = i;
-
-      // 便签：黄底黑字（整张图，贴到圆点右侧）
-      const note = makeStickyNote(entry.name, 19);
-      const noteEntity = viewer.entities.add({
         position: Cesium.Cartesian3.fromDegrees(entry.lng, entry.lat),
         billboard: {
-          image: note.canvas,
-          scale: note.scale,
+          image: noteNormal.canvas,
+          scale: noteNormal.scale,
           horizontalOrigin: Cesium.HorizontalOrigin.LEFT,
           verticalOrigin: Cesium.VerticalOrigin.CENTER,
-          pixelOffset: new Cesium.Cartesian2(12, 0),
+          pixelOffset: new Cesium.Cartesian2(0, 0),
           heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
           disableDepthTestDistance: Number.POSITIVE_INFINITY,
           distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 1e7),
         },
       });
+      entity.entryIndex = i;
 
-      this.markers.push({ entity, index: i });
+      this.markers.push({ entity, noteNormal, noteSelected, index: i });
     });
   }
 
@@ -383,9 +388,9 @@ export class CesiumGlobe {
   setSelected(index) {
     this.selected = index;
     if (!this.viewer) return;
-    this.markers.forEach(({ entity, index: i }) => {
+    this.markers.forEach(({ entity, noteNormal, noteSelected, index: i }) => {
       const on = i === index;
-      entity.point.outlineWidth = on ? 3 : 1; // 选中加粗黑圈，不放大
+      entity.billboard.image = on ? noteSelected.canvas : noteNormal.canvas; // 选中加黑边
     });
     this.viewer.scene.requestRender();
   }