Auto-Focus script error

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine.Rendering.PostProcessing;
5.  
6.  
7. [RequireComponent(typeof(Camera))]
8. [RequireComponent(typeof(DepthOfField))]
9.  
10. public class AutoFocus : MonoBehaviour
11. {
12.     private GameObject doFFocusTarget;
13.     private Vector3 lastDoFPoint;
14.     private DepthOfField dofComponent;
15.  
16.     public DoFAFocusQuality focusQuality = AutoFocus.DoFAFocusQuality.NORMAL;
17.     public LayerMask hitLayer = 1;
18.     public float maxDistance = 100.0f;
19.     public bool interpolateFocus = false;
20.     public float interpolationTime = 0.7f;
21.  
22.     public enum DoFAFocusQuality
23.     {
24.         NORMAL,
25.         HIGH
26.     }
27.  
28.     void Start()
29.     {
30.         doFFocusTarget = new GameObject("DoFFocusTarget");
31.         dofComponent = gameObject.GetComponent<DepthOfField>();
32.         // gives error ad says that 'DepthOfField' does not contain defenition for 'objectFocus' accepting a first argument of type 'DepthOfField' could be found(are you missing a using directive or an assembly refserence?)
33.         dofComponent.objectFocus = doFFocusTarget.transform;
34.     }
35.     void Update()
36.     {
37.  
38.         if (focusQuality == AutoFocus.DoFAFocusQuality.HIGH)
39.         {
40.             Focus();
41.         }
42.  
43.     }
44.  
45.     void FixedUpdate()
46.     {
47.         if (focusQuality == AutoFocus.DoFAFocusQuality.NORMAL)
48.         {
49.             Focus();
50.         }
51.     }
52.  
53.     IEnumerator InterpolateFocus(Vector3 targetPosition)
54.     {
55.  
56.         Vector3 start = this.doFFocusTarget.transform.position;
57.         Vector3 end = targetPosition;
58.         float dTime = 0;
59.  
60.         Debug.DrawLine(start, end, Color.green);
61.  
62.         while (dTime < 1)
63.         {
64.             yield return null;
65.             dTime += Time.deltaTime / this.interpolationTime;
66.             this.doFFocusTarget.transform.position = Vector3.Lerp(start, end, dTime);
67.         }
68.         this.doFFocusTarget.transform.position = end;
69.     }
70.  
71.     void Focus()
72.     {
73.         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
74.         RaycastHit hit;
75.         if (Physics.Raycast(ray, out hit, this.maxDistance, this.hitLayer))
76.         {
77.             Debug.DrawLine(ray.origin, hit.point);
78.            
79.             if (this.lastDoFPoint == hit.point)
80.             {
81.                 return;
82.             }
83.             else if (this.interpolateFocus)
84.             {
85.                 StopCoroutine("InterpolateFocus");
86.                 StartCoroutine(InterpolateFocus(hit.point));
87.  
88.             }
89.             else
90.             {
91.                 this.doFFocusTarget.transform.position = hit.point;
92.             }
93.             this.lastDoFPoint = hit.point;
94.         }
95.     }
96.  
97. }
98.  

 

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