Resolved Slerping(?) for an exact time

Hi folks,

I have been playing around with this now for a while and I cannot make it work.

I have multiple objects that I want to turn towards a direction, each taking a different time and ideally, halfway through, is the fastest turn rate. I guess I need there then an acceleration/deceleration constant?

So I calculated degrees/seconds as a kind of speed measurement, but I couldn't make it work.

Anyone could lend me a hand, please?

Thanks,
Slarti

 

Post the code up, it’ll be easier for people to help.

 

Not much to show :

                rotation.Value = Quaternion.Slerp(rotation.Value,targetRotation, ???);

I am looking for the question marks.
as an example, I want in 10 seconds it slerps to 180 degrees to make it simple. With this information, you know how many degrees it turns in 1 second.

The question is how do I express this in these ???.

 

I always liked that site as it gives a list of examples. Let your mouse hover on a image to see it in action. Then click on the image you like and at the bottom you will find the math to implement for that transform.

 

Easy pattern for this kind of use case:

Code (CSharp):

1. // set up your easing curve in the editor
2. // there's a bunch of defaults
3. public AnimationCurve easeCurve;
4.  
5. float time;
6. public float duration = 2; // or whatever
7.  
8. // then in your animation loop (here represented as a coroutine)
9. IEnumerator AnimCo () {
10.    // important note:
11.    // When using slerp/lerp you are going from point A to point B
12.    // Unlike movetowards in which you're going from <current pos> to point B
13.    var startRotation = rotation.Value;
14.  
15.    while( time < duration ) {
16.        time += Time.deltaTime;
17.        rotation.Value = Quaternion.Slerp( startRotation, targetRotation, easeCurve.Evaluate( time / duration ) );
18.        yield return null;
19.    }
20. }

If you're in a situation where you need to dynamically modify the rotation target on the fly, this method won't work. You will need to use RotateTowards instead.

 

@Madgvox, thanks, buddy. As a matter of fact, I had this, but as you pointed out the start position had to be at the initial point. That's why mine wasn't working.