siege-song/Data/Assets/Digger/Modules/AdvancedOperations/Splines/BezierCurve.cs

using UnityEngine;

namespace Digger.Modules.AdvancedOperations.Splines
{
    public class BezierCurve : MonoBehaviour
    {
        public Vector3[] points;

        public void Reset()
        {
            points = new[]
            {
                new Vector3(1f, 0f, 0f),
                new Vector3(2f, 0f, 0f),
                new Vector3(3f, 0f, 0f),
                new Vector3(4f, 0f, 0f)
            };
        }

        public Vector3 GetPoint(float t)
        {
            return transform.TransformPoint(Bezier.GetPoint(points[0], points[1], points[2], points[3], t));
        }

        public Vector3 GetVelocity(float t)
        {
            return transform.TransformPoint(Bezier.GetFirstDerivative(points[0], points[1], points[2], points[3], t)) - transform.position;
        }

        public Vector3 GetDirection(float t)
        {
            return GetVelocity(t).normalized;
        }
    }
}