startPoint.userData.center 连接

src/model/itemType/measure/Measure.ts

@@ -128,6 +128,12 @@ export default class Measure extends ItemTypeLine {
   // 创建完线之后，创建 label
   afterCreateLine(line: THREE.Mesh, startPoint: THREE.Object3D, endPoint: THREE.Object3D) {
     super.afterCreateLine(line, startPoint, endPoint)
+    if (!startPoint.userData.center) {
+      startPoint.userData.center = []
+    }
+    if (!startPoint.userData.center.includes(endPoint.uuid)) {
+      startPoint.userData.center.push(endPoint.uuid)
+    }
 
     const p0 = startPoint.position
     const p1 = endPoint.position