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How to use AR Camera for Zoom

November 12, 2014 - 5:57am #1

I have tried normal unity pinch gesture and it's working but when i try this for AR Camera it's not working. How can we use AR Camera instead of normal unity camera

using UnityEngine;
 
public class PinchZoom : MonoBehaviour
{
    public float perspectiveZoomSpeed = 0.5f;        // The rate of change of the field of view in perspective mode.
    public float orthoZoomSpeed = 0.5f;        // The rate of change of the orthographic size in orthographic mode.
 
 
    void Update()
    {
        // If there are two touches on the device...
        if (Input.touchCount == 2)
        {
            // Store both touches.
            Touch touchZero = Input.GetTouch(0);
            Touch touchOne = Input.GetTouch(1);
 
            // Find the position in the previous frame of each touch.
            Vector2 touchZeroPrevPos = touchZero.position - touchZero.deltaPosition;
            Vector2 touchOnePrevPos = touchOne.position - touchOne.deltaPosition;
 
            // Find the magnitude of the vector (the distance) between the touches in each frame.
            float prevTouchDeltaMag = (touchZeroPrevPos - touchOnePrevPos).magnitude;
            float touchDeltaMag = (touchZero.position - touchOne.position).magnitude;
 
            // Find the difference in the distances between each frame.
            float deltaMagnitudeDiff = prevTouchDeltaMag - touchDeltaMag;
 
            // If the camera is orthographic...
            if (camera.isOrthoGraphic)
            {
                // ... change the orthographic size based on the change in distance between the touches.
                camera.orthographicSize += deltaMagnitudeDiff * orthoZoomSpeed;
 
                // Make sure the orthographic size never drops below zero.
                camera.orthographicSize = Mathf.Max(camera.orthographicSize, 0.1f);
            }
            else
            {
                // Otherwise change the field of view based on the change in distance between the touches.
                camera.fieldOfView += deltaMagnitudeDiff * perspectiveZoomSpeed;
 
                // Clamp the field of view to make sure it's between 0 and 180.
                camera.fieldOfView = Mathf.Clamp(camera.fieldOfView, 0.1f, 179.9f);
            }
        }
    }
}

How to use AR Camera for Zoom

May 28, 2018 - 12:19am #3

any new updates on this.Iam also stuck on this.I can use lean touch asset for unity camera 3d zoom but when i use it with AR camera my app does'nt open.

How to use AR Camera for Zoom

November 19, 2014 - 3:13pm #2

The FOV of the ARCamera is controlled by Vuforia and set to match the device camera FOV.

https://developer.vuforia.com/forum/unity-3-extension-technical-discussion/change-cameras-fov

 

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