Sprite skips when using Vector2.Lerp

Unity Engine
1

I am trying to get back to learning how Lerps works, however I am having an issue that I can’t seem to understand why. I am trying to have a box sprite move from 0,0 to the cameras width. This is working, but when I first start the game the sprite jumps a few pixels on the x axis before its smooth movement.

Here’s what I have done:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SmoothMove : MonoBehaviour {
   
    private Vector2 _to;

    private Vector2 _current;
   
    private float _speed = 1.5f;
  
    public void Start() {
       
        var cam = Camera.main;
       
        _to = new Vector2(cam.aspect * cam.orthographicSize, 0);
    }
   
    //I changed Update to FixedUpdate to see if I can spot a diff.
    public void FixedUpdate() {
        transform.position = Vector2.Lerp(transform.position, _to,  Time.fixedDeltaTime * _speed);
    }
}

5286039--530160--upload_2019-12-15_23-22-27.png
5286039--530160--upload_2019-12-15_23-22-27.png1054×598 5.32 KB

Both cam and Sprite are at position: 0,0.

Thanks.

2

Never mind, I got it, I was looking at Lerp’s time wrong. The document states
When t = 0.5 returns the midpoint of a and b.
So I had to calculate the distance between the start position and end position. Here’s my final result:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SmoothMove : MonoBehaviour {
 
    private Vector2 _to;

    private Vector2 _current;
 
    private float _speed = 1.5f;

    private float _startTime;

    private float distanceToDest;
 
    public void Start() {
    
        var cam = Camera.main;
    
        _startTime = Time.time;
        _to = new Vector2(cam.aspect * cam.orthographicSize, 0);
    
        distanceToDest = Vector2.Distance(transform.position, _to);
    }
 
    public void Update() {
    
        float currentTime = (Time.time - _startTime);
        float distToTime = currentTime / distanceToDest;
    
        transform.position = Vector2.Lerp(transform.position, _to,  Time.deltaTime * distToTime);
    }
}

Really, This video truly helped me understand it while going back and forth to the document to see where I failed to understand Vector2.Lerp.