cesium绘制图形时,已有点图标图片的下沉遮挡问题?

Question

绘制前显示正常

调用绘制方法绘制时

绘制函数:
startDraw() {

  var that = this;
  this.viewer.scene.globe.depthTestAgainstTerrain = true; //深度检测
  //鼠标左键
  this.handler.setInputAction(function (event) {
    //点击获取经纬度坐标
    var earthPosition = that.viewer.scene.pickPosition(event.position);
    if (Cesium.defined(earthPosition)) {
      if (that.activeShapePointsLatlng.length === 0) {
        that.floatingPoint = that.createPoint(earthPosition);
        that.activeShapePointsLatlng.push(earthPosition);
        var dynamicPositions = new Cesium.CallbackProperty(function () {
          if (that.btntext === "casual") {
            return new Cesium.PolygonHierarchy(
              that.activeShapePointsLatlng
            );
          }
          return that.activeShapePointsLatlng;
        }, false);
        that.activeShape = that.drawGraphic(dynamicPositions); //绘制动态图
      }
      that.activeShapePointsLatlng.push(earthPosition);
      that.activeShapePoints.push(that.createPoint(earthPosition));
      that.entityType == "point"
        ? that.pointArr.push(that.createPoint(earthPosition))
        : null;
    }
    //-----------------------------

    let cartesian = viewer.camera.pickEllipsoid(event.position);
    let cartographic = Cesium.Cartographic.fromCartesian(cartesian);
    let lng = Cesium.Math.toDegrees(cartographic.longitude); // 经度
    let lat = Cesium.Math.toDegrees(cartographic.latitude); // 纬度
    let alt = cartographic.height; // 高度，椭球面height永远等于0
    let coordinate = {
      longitude: Number(lng.toFixed(6)),
      latitude: Number(lat.toFixed(6)),
      altitude: Number(alt.toFixed(2)),
    };
    console.log(coordinate, "111111111111111111");
    //-------------------------------
  }, Cesium.ScreenSpaceEventType.LEFT_CLICK);
  //鼠标移动
  that.handler.setInputAction(function (event) {
    if (Cesium.defined(that.floatingPoint)) {
      var newPosition = that.viewer.scene.pickPosition(event.endPosition);
      if (Cesium.defined(newPosition)) {
        that.floatingPoint.position.setValue(newPosition);
        that.activeShapePointsLatlng.pop();
        that.activeShapePointsLatlng.push(newPosition);
      }
    }
  }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
  // 鼠标右击
  this.handler.setInputAction(function (event) {
    //点击获取经纬度坐标
    var earthPosition = that.viewer.scene.pickPosition(event.position);
    if (Cesium.defined(earthPosition)) {
      if (that.activeShapePointsLatlng.length === 0) {
        that.floatingPoint = that.createPoint(earthPosition);
        that.activeShapePointsLatlng.push(earthPosition);
        var dynamicPositions = new Cesium.CallbackProperty(function () {
          if (that.btntext === "casual") {
            return new Cesium.PolygonHierarchy(
              that.activeShapePointsLatlng
            );
          }
          return that.activeShapePointsLatlng;
        }, false);
        that.activeShape = that.drawGraphic(dynamicPositions); //绘制动态图
      }
      that.activeShapePointsLatlng.push(earthPosition);
      that.activeShapePoints.push(that.createPoint(earthPosition));
      that.entityType == "point"
        ? that.pointArr.push(that.createPoint(earthPosition))
        : null;
    }
    //-----------------------------

    let cartesian = viewer.camera.pickEllipsoid(event.position);
    let cartographic = Cesium.Cartographic.fromCartesian(cartesian);
    let lng = Cesium.Math.toDegrees(cartographic.longitude); // 经度
    let lat = Cesium.Math.toDegrees(cartographic.latitude); // 纬度
    let alt = cartographic.height; // 高度，椭球面height永远等于0
    let coordinate = {
      longitude: Number(lng.toFixed(6)),
      latitude: Number(lat.toFixed(6)),
      altitude: Number(alt.toFixed(2)),
    };
   
    //-------------------------------
  }, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
  // Redraw the shape so it's not dynamic and remove the dynamic shape.
  function terminateShape() {
    that.activeShapePointsLatlng.pop(); //去除最后一个动态点
    var tempArr;
    //把实体存入数组
    switch (that.btntext) {
      // case "polyline":
      //     tempArr=that.polylineArr
      //     break
      case "casual":
        tempArr = that.polygonArr; //多边形
        break;
      case "round":
        tempArr = that.ellipseArr; //圆
        break;
      case "rectangle":
        tempArr = that.rectangleArr;
        break;
    }
    if (that.activeShapePointsLatlng.length) {
      tempArr.push(that.drawGraphic(that.activeShapePointsLatlng)); //绘制最终图
    }
    //移除节点
    if (that.activeShapePoints.length) {
      that.activeShapePoints.filter((point) => {
        that.viewer.entities.remove(point);
      });
    }
    that.viewer.entities.remove(that.floatingPoint); //去除动态点图形（当前鼠标点）
    that.viewer.entities.remove(that.activeShape); //去除动态图形
    that.floatingPoint = undefined;
    that.activeShape = undefined;
    that.activeShapePointsLatlng = [];
  }
  //鼠标右键移除动态图层
  that.handler.setInputAction(function (event) {
    terminateShape();
  }, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
},