Cesium实现被点击的省边界变色,生成示例给我看看

当然可以，以下是实现被点击的省边界变色的Cesium示例代码：

var viewer = new Cesium.Viewer('cesiumContainer');

var previousEntity = null;

viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(movement) {
  var pickedObject = viewer.scene.pick(movement.endPosition);

  if (Cesium.defined(pickedObject) && pickedObject.id && pickedObject.id.isPicked) {
    var entity = pickedObject.id.entity;

    if (previousEntity != entity) {
      if (Cesium.defined(previousEntity)) {
        previousEntity.polygon.material = Cesium.Color.RED;
        previousEntity.billboard.color = Cesium.Color.RED;
      }
      entity.polygon.material = Cesium.Color.YELLOW;
      entity.billboard.color = Cesium.Color.YELLOW;
      previousEntity = entity;
    }
  } else {
    if (Cesium.defined(previousEntity)) {
      previousEntity.polygon.material = Cesium.Color.RED;
      previousEntity.billboard.color = Cesium.Color.RED;
      previousEntity = null;
    }
  }
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);

var options = {
  stroke: Cesium.Color.YELLOW,
  strokeWidth: 2,
  fill: Cesium.Color.RED.withAlpha(0.1),
  outline: true,
  outlineColor: Cesium.Color.RED
};

var promise = Cesium.GeoJsonDataSource.load('China_Provinces.geojson');
promise.then(function(dataSource) {
  viewer.dataSources.add(dataSource);
  var entities = dataSource.entities.values;
  for (var i = 0; i < entities.length; i++) {
    var entity = entities[i];
    entity.isPicked = true;
    entity.polygon = options;
    entity.billboard = {
      image: 'https://cesium.com/downloads/images/Cesium_Logo_overlay.png',
      scale: 0.1,
      color: Cesium.Color.RED,
      heightReference: Cesium.HeightReference.RELATIVE_TO_GROUND
    };
    entity.description = '<div style="padding: 20px"><h3>' + entity.name + '</h3></div>';
  }
});

您可以将此代码复制到您的项目中，并将`China_Provinces.geojson`替换为您的省份边界数据，即可实现被点击的省边界变色。