Need to limit zoom in/out of camera script

Question

Hello

i have this very simple camera scripe

 var cam : Camera;
 
 function Update(){
     cam.fieldOfView += 5 * Input.GetAxis("Mouse ScrollWheel");
 }

I need to limit the max zoom in and out of the camera.

If someone can point me in the right direction, on how i would go about doing this.

Thanks in advance

Answer 1

Best Answer

Answer by LukaKotar · Feb 02, 2013 at 02:05 PM

 var cam : Camera;
 var min : float; //Min FOV (zoomed in)
 var max : float; //Max FOV (zoomed out)
  
 function Update(){
     cam.fieldOfView += 5 * Input.GetAxis("Mouse ScrollWheel");

     //Use Mathf.Clamp to keep the value always lower than 'max' and greater than 'min'
     cam.fieldOfView = Mathf.Clamp(cam.fieldOfView, min, max);
 }

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Answer 2

Answer by Ut1lityDev · Dec 13, 2020 at 09:33 AM

Here is the C# version of @LukaKotar's script.

 public Camera camera;
 float min;
 float max;
 
 void Update() {
     cam.fieldOfView += 5 * Input.GetAxis("Mouse ScrollWheel");
     cam.fieldOfView = Mathf.Clamp(cam.fieldOfView, min, max);
 }

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Answer 3

var distanceMin = 4; var distanceMax = 45;

function LateUpdate () { if (target) { distance = Mathf.Clamp(distance - Input.GetAxis("Camera Zoom")5, distanceMin, distanceMax); if (Input.mousePosition.x > Screen.width - 2 || Input.mousePosition.x < 2 || Input.mousePosition.y > Screen.height - 2 || Input.mousePosition.y < 2) DoIT = 1; else DoIT = 0; if (FirstLogin == 0) { FirstLogin = 1; DoIT = 1; } if (DoIT == 1) { if (Input.mousePosition.x > Screen.width - 2) x += 60 xSpeed 0.02 Time.deltaTime; if (Input.mousePosition.x < 2) x -= 60 xSpeed 0.02 Time.deltaTime; if (Input.mousePosition.y < 2) y += 30 ySpeed 0.02 Time.deltaTime; if (Input.mousePosition.y > Screen.height - 2) y -= 30 ySpeed 0.02 * Time.deltaTime; y = ClampAngle(y, yMinLimit, yMaxLimit);

var rotation = Quaternion.Euler(y, x, 0); var position = rotation * Vector3(0.0, 0.0, -distance) + target.position; var hit : RaycastHit; if (Physics.Linecast (target.position, transform.position, hit)) { distance -= hit.distance; }

     transform.rotation = rotation;
     transform.position = position;
     lastPos = transform.position - target.position;
     }
     else transform.position = target.transform.position + lastPos;

} }

static function ClampAngle (angle : float, min : float, max : float) { if (angle < -360) angle += 360; if (angle > 360) angle -= 360; return Mathf.Clamp (angle, min, max); }

function StartTheCam() { distance = Mathf.Clamp(distance - Input.GetAxis("Camera Zoom")5, distanceMin, distanceMax); var angles = transform.eulerAngles; x = angles.y; y = angles.x; y = ClampAngle(y, yMinLimit, yMaxLimit); var rotation = Quaternion.Euler(y, 0, 0); var position = rotation Vector3(0.0, 0.0, -distance) + target.position;

transform.rotation = rotation; transform.position = position; lastPos = transform.position - target.position; transform.position = target.transform.position + lastPos; }

i dont really know how to do it but this works but the zoom doesnt show it has worked till you move the camera again. it mightjust be in the wrong spot lol

Answer 4

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Answer by Ingen · Jul 30, 2012 at 01:20 AM

maybe something like this?

pseudo code not expect can work at now, just to have a line of think. Hope can help

 var cam : Camera;
 var  Dist : Float;
 var minDist : Float;
 var maxDist : Float;
 var zoom : boolean;
 
  function update
 
      if Dist<=minDist = false
          if Dist>=maxDist = false
 
 if {
       input scrollMouseDown
        Zoomin;
     }
 
 if {
    input scrollMouseUP
        ZoomOut;
    }
 function ZoomIn (){
   cam.fieldOfView += 5
 }
 
 function ZoomOut (){
   cam.fieldOfView -= 5
 }

good look

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Need to limit zoom in/out of camera script

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