The earth revolves around the sun

The earth revolves around the sun

 newly build Unity3D engineering , Do some preparatory work 

1、 newly build 2 individual 3D sphere , Rename each to ：Sun,Earth
2、 stay Project The palette , newly build Texture,Material,Scripts Folder
（1） stay Texture Under the folder , Import mapping material （ Baidu search sun map 、 Just map the earth . The following is my baidu material ）


（2） stay Material Under the folder , Create separate 2 Materials , Put their Shader Shader changes , As shown in the figure below

（3） stay Scripts Under the folder , establish C# Script , Double-click to open , Write code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class earthAroundSun : MonoBehaviour
{
    
    public Transform sun;
    void Update()
    {
    
        transform.RotateAround(sun.position, Vector3.up, 1f);  //RotateAround Is rotating around another point 
    }
}

3、 go back to Unity3D, take Sun Component drag in Sun in , Here's the picture

4、 Achieve the effect diagram