How to a get an array of 3D cameras to follow a Bezier curve in unity? - visual-studio

Question

I need to implement a manual Bezier curve script to a camera in my scene. I CANNOT use any methods provided by unity to implement the Bezier curve. I got the formula right but I don't know how to get a camera to follow the curve let alone 4. I could not do an array and just apply the script to each camera if that's an option. I got a lineRenderer script that show the curve:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Bezier : MonoBehaviour
{
public LineRenderer lineRenderer;
public Transform point0, point1, point2, point3;
private int cPoints = 50;
private Vector3[] positions = new Vector3[50];
// Start is called before the first frame update
void Start()
{
lineRenderer.positionCount = cPoints;
DrawCubicCurve();
}
// Update is called once per frame
void Update()
{
DrawCubicCurve();
}
private void DrawCubicCurve()
{
for (int i = 1; i < cPoints - 1; i++)
{
float t = i / (float)cPoints;
positions[i - 1] = CalculateCubicBezierCurve(t, point0.position, point1.position, point2.position, point3.position);
}
lineRenderer.SetPositions(positions);
}
private Vector3 CalculateCubicBezierCurve(float t, Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3)
{
float u = 1 - t;
float t2 = t * t;
float uu = u * u;
float uuu = uu * u;
float t3 = t2 * t;
Vector3 p = uuu * p0;
p += 3 * uu * t * p1;
p += 3 * u * t2 * p2;
p += t3 * p3;
return p;
}
}
Then I have the script I am trying to make that camera move along such a curve:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class CamBezier : MonoBehaviour
{
public GameObject[] cam;
public Transform point0, point1, point2, point3;
private float cPoints = 50.0f;
private Vector3[] positions = new Vector3[50];
// Start is called before the first frame update
void Start()
{
for (int i = 1; i < cam.Length - 1; i++)
{
float x = cam[i].transform.position.x;
float y = cam[i].transform.position.y;
float z = cam[i].transform.position.z;
}
DrawCubicCurve();
}
// Update is called once per frame
void Update()
{
DrawCubicCurve();
}
private void DrawCubicCurve()
{
for (int i = 1; i < cam.Length - 1; i++)
{
float t = i / (float)cPoints;
positions[i - 1] = CalculateCubicBezierCurve(t, point0.position, point1.position, point2.position, point3.position);
cam.transform.position = positions;
}
}
private Vector3 CalculateCubicBezierCurve(float t, Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3)
{
float u = 1 - t;
float t2 = t * t;
float uu = u * u;
float uuu = uu * u;
float t3 = t2 * t;
Vector3 p = uuu * p0;
p += 3 * uu * t * p1;
p += 3 * u * t2 * p2;
p += t3 * p3;
return p;
}
}
Again I CANNOT use any methods provided by unity to implement the Bezier curve. The goal is just to get a camera to move along the Bezier curve. Doing an array of them is extra.