From 7821af23cb1c4c0df7e7c9e1a281e2315000f482 Mon Sep 17 00:00:00 2001
From: LizZ <409429916@qq.com>
Date: Wed, 22 May 2024 16:32:51 +0800
Subject: [PATCH] =?UTF-8?q?fix(measure):=E4=BF=AE=E6=94=B9=E9=87=8F?=
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---
 src/modules/math/midCartesian.js            | 5 +----
 src/modules/measure/draw/DrawPolygon.js     | 4 +++-
 src/modules/measure/type/DistanceSurface.js | 4 ----
 3 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/src/modules/math/midCartesian.js b/src/modules/math/midCartesian.js
index e6f7a81f..680ee99c 100644
--- a/src/modules/math/midCartesian.js
+++ b/src/modules/math/midCartesian.js
@@ -5,8 +5,5 @@
 import { Cesium } from '../../namespace'
 
 export default function midCartesian(start, end) {
-  let c1 = Cesium.Ellipsoid.WGS84.cartesianToCartographic(start)
-  let c2 = Cesium.Ellipsoid.WGS84.cartesianToCartographic(end)
-  let cm = new Cesium.EllipsoidGeodesic(c1, c2).interpolateUsingFraction(0.5)
-  return Cesium.Ellipsoid.WGS84.cartographicToCartesian(cm)
+  return Cesium.Cartesian3.midpoint(start, end, new Cesium.Cartesian3())
 }
diff --git a/src/modules/measure/draw/DrawPolygon.js b/src/modules/measure/draw/DrawPolygon.js
index d36a6e56..162a60d3 100644
--- a/src/modules/measure/draw/DrawPolygon.js
+++ b/src/modules/measure/draw/DrawPolygon.js
@@ -22,7 +22,9 @@ class DrawPolygon extends Draw {
         ...this._style,
         hierarchy: new Cesium.CallbackProperty(() => {
           if (this._positions.length > 2) {
-            return new Cesium.PolygonHierarchy(this._positions)
+            return new Cesium.PolygonHierarchy(
+              this._positions.map((item) => item.clone())
+            )
           } else {
             return null
           }
diff --git a/src/modules/measure/type/DistanceSurface.js b/src/modules/measure/type/DistanceSurface.js
index 162b7f84..c361bb24 100644
--- a/src/modules/measure/type/DistanceSurface.js
+++ b/src/modules/measure/type/DistanceSurface.js
@@ -108,10 +108,6 @@ class DistanceSurface extends MeasureBase {
    */
   start(measure, options) {
     this._startHook(measure, options)
-    this._startLabel.label.heightReference =
-      Cesium.HeightReference.CLAMP_TO_GROUND
-    this._resultLabel.label.heightReference =
-      Cesium.HeightReference.CLAMP_TO_GROUND
     new DrawPolyline({
       material: options.material || Cesium.Color.YELLOW.withAlpha(0.6),
       depthFailMaterial: