將lonlat轉換爲xyz，反之亦然

Question

我使用此代碼將lonlat轉換爲x，y，z，但無法弄清楚如何做相反的事情。

var phi = (this.lat)*Math.PI/180; 
var theta = (this.lon-180)*Math.PI/180; 

x = -(this.R) * Math.cos(phi) * Math.cos(theta); 
y = -(this.R) * Math.sin(phi); 
z = (this.R) * Math.cos(phi) * Math.sin(theta); 

現在從X，Y轉換，Z向lonlat

lat = THREE.Math.radToDeg(Math.asin(rotation.y/this.R)); 
lon = THREE.Math.radToDeg(Math.atan2(rotation.z, rotation.x)); 

但是，這並不正常工作，我究竟做錯了什麼？

Answer 1

好了，你的arent從XYZ轉換爲緯度經度，你正在嘗試做一些與歐拉角：

嘗試這樣的事情

lon = Math.atan2(x , z); //horizontal angle, just two components 
lon = Math.atan2(Math.sqrt(x*x,z*z) , y); //vertical angle, length of the diagonal between xz components and y component