UGUI_创建旋转物体，使用Slider控制小球旋转速度

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

public class Player : MonoBehaviour {
    public float speed = 50f;
    // Use this for initialization
    void Start () {
        
    }
    
    // Update is called once per frame
    void Update () {
        transform.Rotate(Vector3.up,speed *Time.deltaTime);
    }
    public void ChangeSpeed(float newSpeed)
    {
        this.speed = newSpeed; 
    }
}

player空物体，挂载player脚本；

Canvas下Slider，OnValueChanged 事件处理：  Player物体+（player脚本下的）ChangeSpeed方法。