Cesium JS API
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Spherical

概述

Spherical是cesiumjs中用来表示球面坐标系的类,包括经度、纬度、高度等属性。

使用方法

  1. 导入Spherical类

    import { Spherical } from 'cesium';
    
  2. 创建Spherical实例

    const spherical = new Spherical(lon, lat, height);
    

    参数说明:

    • lon:经度,单位:弧度。
    • lat:纬度,单位:弧度。
    • height:高度,单位:米。
  3. 获取和设置经度、纬度、高度

    // 获取经度、纬度、高度
    const lon = spherical.longitude;
    const lat = spherical.latitude;
    const height = spherical.height;
    
    // 设置经度、纬度、高度
    spherical.longitude = newLon;
    spherical.latitude = newLat;
    spherical.height = newHeight;
    
  4. 转换为笛卡尔坐标系

    const cartesian3 = new Cesium.Cartesian3();
    Cesium.Cartesian3.fromSpherical(spherical, cartesian3);
    
  5. 转换为字符串

    const str = spherical.toString();
    
  6. 克隆Spherical实例

    const newSpherical = spherical.clone();
    

示例

import { Spherical, Cartesian3 } from 'cesium';

// 创建Spherical实例
const spherical = new Spherical(Math.PI, Math.PI / 2, 5000);

// 获取经度、纬度、高度
const { longitude, latitude, height } = spherical;
console.log(longitude, latitude, height);

// 设置经度、纬度、高度
spherical.longitude = 0;
spherical.latitude = Math.PI / 4;
spherical.height = 10000;

// 转换为笛卡尔坐标系
const cartesian3 = new Cartesian3();
Cartesian3.fromSpherical(spherical, cartesian3);
console.log(cartesian3.x, cartesian3.y, cartesian3.z);

// 转换为字符串
const str = spherical.toString();
console.log(str);

// 克隆Spherical实例
const newSpherical = spherical.clone();
console.log(newSpherical);

参考链接