Cesium1学习

1：中文文档地址：Cesium中文api文档 | Index - Cesium Documentation

2：初始化镜头（飞行到某个位置）

viewer.camera.flyTo({
  destination: Cesium.Cartesian3.fromDegrees(121.479802, 31.225271, 5000.0)
});

3：对地图进行一些操作设置

//设置中键放大缩小
viewer.scene.screenSpaceCameraController.zoomEventTypes = [
    Cesium.CameraEventType.WHEEL,
    Cesium.CameraEventType.MIDDLE_DRAG,
    Cesium.CameraEventType.PINCH
];
//设置右键旋转
viewer.scene.screenSpaceCameraController.tiltEventTypes = [
    Cesium.CameraEventType.RIGHT_DRAG,
    Cesium.CameraEventType.PINCH,
    {
      eventType: Cesium.CameraEventType.RIGHT_DRAG,
      modifier: Cesium.KeyboardEventModifier.CTRL
    },
    {
      eventType: Cesium.CameraEventType.MIDDLE_DRAG,
      modifier: Cesium.KeyboardEventModifier.CTRL
    }
];

4：注册场景点击事件

// 事件绑定
handler.setInputAction(function(movement) {
   // 返回地图表面上的点在世界坐标系中
   let cartesian1 = viewer.camera.pickEllipsoid(movement.position, viewer.scene.globe.ellipsoid);
   // 将世界坐标转换为经纬度
   let cartographic1 = viewer.scene.globe.ellipsoid.cartesianToCartographic(cartesian1);
   let lon1 = Cesium.Math.toDegrees(cartographic1.longitude); //经度值
   let lat1 = Cesium.Math.toDegrees(cartographic1.latitude); //纬度值
 }, Cesium.ScreenSpaceEventType.RIGHT_CLICK)