修改tip提示语

src/Obj/Base/TextObject/StandText/index.js

@@ -595,7 +595,7 @@ class StandText extends Base {
             selectPoint = pick.id
             this.nodePoints.splice(pick.id.index, 1)
             this.sdk.viewer.entities.remove(pick.id)
-            this.tip.set_text('左键开始，右键结束，CTRL+右键撤销')
+            this.tip.set_text('左键单击确认顶点位置，右键单击结束，CTRL+右键撤销')
             originalPosition = this.cartesian3Towgs84(cartesian, this.sdk.viewer)
             this.entity.wall.positions = new Cesium.CallbackProperty(function () {
               return Cesium.Cartesian3.fromDegreesArray(fromDegreesArray)
@@ -615,6 +615,15 @@ class StandText extends Base {
           if(isAdd) {
             this.options.positions.splice(selectPoint.index, 1)
           }
+          if (!that.options.positions || that.options.positions.length < 2) {
+            console.warn('最少需要两个坐标！')
+            window.ELEMENT && window.ELEMENT.Message({
+              message: '最少需要两个坐标！',
+              type: 'warning',
+              duration: 1500
+            });
+            that.options.positions = [...previous]
+          }
           cb(null, this.options.positions)
         }
         let positions = this.options.positions