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

namespace YKMoon.Math
{
    public class YKBezierHelper
    {
        public static Vector3 CubicBezierPos(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, float t)
        {
            var i1 = Vector3.Lerp(p0, p1, t); // p1 is the handle for p0
            var i2 = Vector3.Lerp(p1, p2, t); // p2 is the handle for p3
            var i3 = Vector3.Lerp(p2, p3, t);
            var j1 = Vector3.Lerp(i1, i2, t); // lerp between the previous 3 points
            var j2 = Vector3.Lerp(i2, i3, t);
            var result = Vector3.Lerp(j1, j2, t); // lerp between the 2 for the result
            return result;
        }
        public static Vector3 QuadraticBezierPos(Vector3 p0, Vector3 p1, Vector3 p2, float t)
        {
            var i1 = Vector3.Lerp(p0, p1, t); // p1 is the shared handle
            var i2 = Vector3.Lerp(p1, p2, t);
            var result = Vector3.Lerp(i1, i2, t); // lerp between the 2 for the result
            return result;
        }
    }
}