How to animate a spinning wheel?

Question

Hello. I am working on a simple project where a roulette wheel spins for a few seconds then slows to a stop using a coroutine. When I tun the program the wheel only moves a few pixels then stops. I'm thinking it has something to do with the way my IEnumerator is set up but I am not sure how to go about fixing it. The code is posted below. Thanks for any help.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class WheelController : MonoBehaviour
 {
     float rotSpeed = 0;
     public float activeRotSpeed = 20f;
     public float rotDecrease = 0.90f;
     // Start is called before the first frame update
     void Start()
     {
         this.rotSpeed = activeRotSpeed;
 
     }
 
     IEnumerator WheelCon()
     {
 
         transform.Rotate(0, 0, this.rotSpeed);
 
         yield return new WaitForSeconds(5);
 
         this.rotSpeed *= rotDecrease;
 
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Input.GetMouseButtonDown(0))
         {
             StartCoroutine(WheelCon());
         }
 
     }
 }

Answer 1

Coroutine:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class WheelController : MonoBehaviour
 {
     
     [SerializeField] AnimationCurve _spinCurve = new AnimationCurve(
         new Keyframe( 0f , 0f , -1f , 0f ) ,
         new Keyframe( 0.1f , 1f , -1f , 0f ) ,
         new Keyframe( 0.8f , 1f , -1f , 0f ) ,
         new Keyframe( 1f , 0f , -1f , 0f )
     );
     [SerializeField] float _spinAmplitude = 200f;// stretches spin curve vertically
     [SerializeField] float _spinDuration = 5f;// stretches spin curve horizontally
 
     void Update ()
     {
         if( Input.GetMouseButtonDown(0) )
         {
             StartCoroutine( StartSpinning() );
         }
     }
 
     IEnumerator StartSpinning ()
     {
         float spinStartTime = Time.time;
         while( ( Time.time - spinStartTime ) < _spinDuration )
         {
             float curveTime = ( Time.time - spinStartTime ) / _spinDuration;
             float degrees = _spinCurve.Evaluate( curveTime ) * _spinAmplitude;
             if( Mathf.Abs(degrees)>0 )
             {
                 transform.Rotate( 0 , 0 , degrees * Time.deltaTime , Space.Self );
             }
             yield return null;
         }
     }
 
 }

No coroutine:

 using UnityEngine;
 
 public class WheelController : MonoBehaviour
 {
     [SerializeField] AnimationCurve _spinCurve = new AnimationCurve(
         new Keyframe( 0f , 0f , -1f , 0f ) ,
         new Keyframe( 0.1f , 1f , -1f , 0f ) ,
         new Keyframe( 0.8f , 1f , -1f , 0f ) ,
         new Keyframe( 1f , 0f , -1f , 0f )
     );
     [SerializeField] float _spinAmplitude = 200f;// stretches spin curve vertically
     [SerializeField] float _spinDuration = 5f;// stretches spin curve horizontally
     float _spinStartTime = -1000;
 
     void Update ()
     {
         if( Input.GetMouseButtonDown(0) )
         {
             _spinStartTime = Time.time;
         }
 
         float curveTime = ( Time.time - _spinStartTime ) / _spinDuration;
         float degrees = _spinCurve.Evaluate( curveTime ) * _spinAmplitude;
         if( Mathf.Abs(degrees)>0 )
         {
             transform.Rotate( 0 , 0 , degrees * Time.deltaTime , Space.Self );
         }
     }
 
 }

How to animate a spinning wheel?

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