Question Continuously rotate camera between to values

I want to simulate a security camera that loops between two points.

I tried using Mathf.PingPong and Quaternion.Lerp, but both of them only rotate once instantly and then they stay in the position they are currently in.

Here are some examples of what I've tried:

Code (CSharp):

1. private float speed = 1;
2.  
3.     void Start()
4.     {
5.         StartCoroutine(CameraRotation());
6.     }
7.  
8.     IEnumerator CameraRotation()
9.     {
10.         Quaternion startValue = this.transform.rotation;
11.         startValue = Quaternion.Euler(0, 15, 0);
12.  
13.         Quaternion endValue = this.transform.rotation;
14.         endValue = Quaternion.Euler(0, -15, 0);
15.  
16.         while (true)
17.         {
18.             this.transform.rotation = Quaternion.Lerp(startValue, endValue, Time.deltaTime * speed);
19.             yield return null;
20.         }
21.     }

and

Code (CSharp):

1. private float speed = 30f;
2.  
3.     private void Update()
4.     {
5.         transform.localRotation = Quaternion.Euler(0, Mathf.PingPong(Time.deltaTime * speed, 15), 0);
6.     }

The camera should only rotate on the y-Axis, with 15° in each direction. This should loop not stop until the game ends.

This is my first time posting here please tell me when I'm doing something wrong. I hope you can help me trying to figure out a way to do this.

 

You need an ever-growing number for your PingPong, not the frame time. Change it to Time.time from Time.deltaTime and it should work.

 

adapt this to your needs if it's what you're loking for

https://forum.unity.com/threads/sol...en-two-angles-constantly.439619/#post-2842667

Note that Mathf.PingPong() is an increment & it does'nt oscilate between -n and +n but zero to n or zero to -n
Description
PingPong returns a value that will increment and decrement between the value 0 and length

 

Thank you guys this works really well however both of these scripts reset the cameras y-Axis to 0.

Almost all my cameras who use this code are rotated and they all reset to 0. Is there a way to keep the previous location and just ping pong from there?

 

If I'm understanding you correctly, you can create a gimbal setup by parenting the camera to another GameObject, like this:
CameraRig
- Camera

Then rotate the CameraRig as needed, and PingPong the child Camera's localRotation.