Unity C # Some experiences with Camera !,

Unity C # Some experiences with Camera !,

This article is original, reproduced please indicate the source: http://www.cnblogs.com/AdvancePikachu/p/6856374.html

First, I summarized the camera roaming functions in my recent work,

The script is as follows:

1 Transform _ Camera; 2 public LayerMask mask; 3 4 public float checkHeight = 500f; 5 public float minHeight = 20f; 6 public float maxHeight = 8000f; 7 public float minClamp = 50f; 8 public float maxClamp = 950f; 9 10 public float sensitivityX = 5f; 11 public float sensitivityY = 5f; 12 private float rotationY = 0f; 13 14 // up/down Max Y angle 15 public float minimumY =-90f; 16 public float maximumY = 30f; 17 18 public Vector3 PreMouseMPos; 19 20 public float scrollSpeed = 200f; 21 22 void Start () 23 {24 mask. value = 1; 25 _ Camera = Camera. main. transform; 26} 27 28 // Update is called once per frame 29 void Update () 30 {31 if (Input. getKey (KeyCode. leftAlt) 32 {33 MouseScrollWheel (); 34 CameraMove (); 35 MoveEulerAngles (); 36} 37} 38 39 // <summary> 40 // Checks the height of the low. 41 /// </Summary> 42 void CheckLowHeight () 43 {44 if (_ Camera. position. x <minClamp) 45 _ Camera. position = new Vector3 (minClamp, _ Camera. position. y, _ Camera. position. z); 46 if (_ Camera. position. x> maxClamp) 47 _ Camera. position = new Vector3 (maxClamp, _ Camera. position. y, _ Camera. position. z); 48 if (_ Camera. position. z <minClamp) 49 _ Camera. position = new Vector3 (_ Camera. position. x, _ Camera. position. Y, minClamp); 50 if (_ Camera. position. z> maxClamp) 51 _ Camera. position = new Vector3 (_ Camera. position. x, _ Camera. position. y, maxClamp); 52 53 RaycastHit hit; 54 if (Physics. raycast (_ Camera. position + Vector3.up * checkHeight, Vector3.down, out hit, checkHeight + minHeight, mask) 55 {56 if (_ Camera. position. y-hit.point.y <minClamp) 57 {58 Vector3 lowPoint = hit. point + new Vector3 (0, minHeight, 0); 59 _ C Amera. position = lowPoint; 60} 61} 62} 63 64 // <summary> 65 // Mouses the scroll wheel. 66 /// </summary> 67 private void MouseScrollWheel () 68 {69 if (Input. getAxis ("Mouse ScrollWheel ")! = 0) 70 {71 _ Camera. translate (new Vector3 (0, 0, Input. getAxis ("Mouse ScrollWheel") * Time. deltaTime * scrollSpeed); 72} 73 74 CheckLowHeight (); 75 76 if (_ Camera. position. y> = maxHeight) 77 _ Camera. position = new Vector3 (_ Camera. position. x, maxHeight, _ Camera. position. z); 78} 79 80 // <summary> 81 // Cameras the move. 82 // </summary> 83 private void CameraMove () 84 {85 if (Input. getMouseButton (0) 86 {87 if (PreMouseMPos. x <= 0) 88 {89 PreMouseMPos = new Vector3 (Input. mousePosition. x, Input. mousePosition. y, 0); 90} 91 else 92 {93 Vector3 CurMouseMPos = new Vector3 (Input. mousePosition. x, Input. mousePosition. y, 0); 94 Vector3 offset = CurMouseMPos-PreMouseMPos; 95 offset =-offset * 0.5f * 2; 96 if (_ Camera. position + offset ). y> = minHeight 97 & (_ Camera. position + offset ). y <= maxHeight) 98 {99 _ Camera. translate (offset); 100 101 CheckLowHeight (); 102 103 PreMouseMPos = CurMouseMPos; 104} 105} 106} 107 else108 PreMouseMPos = Vector3.zero; 109} 110 111 // <summary> 112 // Moves the euler angles.113 // </summary> 114 private void MoveEulerAngles () 115 {116 if (Input. getMouseButton (1) 117 {118 float rotationX = _ Camera. localEulerAngles. y + Input. getAxis ("Mouse X") * sensitivityX; 119 120 rotationY + = Input. getAxis ("Mouse Y") * sensitivityY; 121 122 rotationY = Mathf. clamp (rotationY, minimumY, maximumY); 123 124 _ Camera. localEulerAngles = new Vector3 (-rotationY, rotationX, 0); 125} 126}MoveRocket

The second is about the camera's restricted range and the function of automatically changing the distance from the target when encountering obstacles.

The Code is as follows:

  1 public Transform target;  2   3     public LayerMask mask = new LayerMask();  4   5     public Vector2 targetOffset = new Vector2();  6     public Vector2 originRotation = new Vector2();  7   8     public float distance = 5;  9     public float minDistance = 0; 10     public float maxDistance = 10; 11  12     public Vector2 sensitivity = new Vector2(3, 3); 13  14     public float zoomSpeed = 1; 15     public float zoomSmoothing = 16; 16  17     public float minAngle = -90; 18     public float maxAngle = 90; 19  20     private float _zoom_in_timer = 0; 21     private float _zoom_out_timer = 0; 22  23     private float _wanted_distance; 24     private Quaternion _rotation; 25     private Vector2 _input_rotation; 26  27     private Transform _t; 28  29     void Start() 30     { 31         mask.value = 1; 32         _t = transform; 33         _wanted_distance = distance; 34         _input_rotation = originRotation; 41     } 42  43     void Update() 44     { 45         if (target) { 46  47             if (Input.GetMouseButton (0) || Input.GetMouseButton (1)) { 48                 if (Input.GetAxis ("Mouse X") != 0 || Input.GetAxis ("Mouse Y") != 0) { 49                     if (!Cursor.visible) { 50                         Cursor.visible = false; 51                         Cursor.lockState = CursorLockMode.Locked; 52                     } 53                 } 54  55                 return; 56             } 57         } 58  59  60         if (!Cursor.visible) { 61             Cursor.visible = true; 62             Cursor.lockState = CursorLockMode.None; 63         } 64  65     } 66     void FixedUpdate() 67     { 68         if(target) 69         { 70  71             // Zoom control 72             if(Input.GetAxis("Mouse ScrollWheel") < 0 ) 73             { 74                 _wanted_distance += zoomSpeed; 75             } 76             else if(Input.GetAxis("Mouse ScrollWheel") > 0 ) 77             { 78                 _wanted_distance -= zoomSpeed; 79             } 80  81  82             _wanted_distance = Mathf.Clamp(_wanted_distance, minDistance, maxDistance); 83  84  85             if (Input.GetMouseButton (0) || Input.GetMouseButton (1)) { 86  87                 _input_rotation.x += Input.GetAxis ("Mouse X") * sensitivity.x; 88  89  90                 ClampRotation (); 91  92  93                 _input_rotation.y -= Input.GetAxis ("Mouse Y") * sensitivity.y; 94  95  96                 _input_rotation.y = Mathf.Clamp (_input_rotation.y, minAngle, maxAngle); 97  98                 _rotation = Quaternion.Euler (_input_rotation.y, _input_rotation.x, 0); 99 100             }101 102             // Lerp from current distance to wanted distance103             distance = Mathf.Clamp(Mathf.Lerp(distance, _wanted_distance, Time.deltaTime * zoomSmoothing), minDistance, maxDistance);104 105             // Set wanted position based off rotation and distance106             Vector3 wanted_position = _rotation * new Vector3(targetOffset.x, 0, -_wanted_distance - 0.2f) + target.position + new Vector3(0, targetOffset.y, 0);107             Vector3 current_position = _rotation * new Vector3(targetOffset.x, 0, 0) + target.position + new Vector3(0, targetOffset.y, 0);108 109 110             // Linecast to test if there are objects between the camera and the target using collision layers111             RaycastHit hit;112 113             if(Physics.Linecast(current_position, wanted_position, out hit, mask))114             {115                 distance = Vector3.Distance(current_position, hit.point) - 0.2f;116             }117 118 119             // Set the position and rotation of the camera120             _t.position = _rotation * new Vector3(targetOffset.x, 0.0f, -distance) + target.position + new Vector3(0, targetOffset.y, 0);121             _t.rotation = _rotation;122         }123     }124 125     private void ClampRotation()126     {127         if(originRotation.x < -180)128         {129             originRotation.x += 360;130         }131         else if(originRotation.x > 180)132         {133             originRotation.x -= 360;134         }135 136         if(_input_rotation.x - originRotation.x < -180)137         {138             _input_rotation.x += 360;139         }140         else if(_input_rotation.x - originRotation.x > 180)141         {142             _input_rotation.x -= 360;143         }144     }